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41</head> 42<body> 43 44<div class="bg-canvas" aria-hidden="true"> 45 <div class="bg-grid"></div> 46 <canvas class="bg-rain" id="bg-rain"></canvas> 47 <div class="bg-noise"></div> 48 <div class="bg-flash"></div> 49</div> 50 51<!-- NAV --> 52<div class="nav-shell"> 53 <div class="wrap nav"> 54 <div class="nav-left"> 55 <a href="/" class="nav-brand"> 56 <img src="../favicon.png" alt="StormCast" /> 57 <span>StormCast</span> 58 </a> 59 </div> 60 <div class="nav-links"> 61 <a href="/#features">Features</a> 62 <a href="/river-level-app">River Gauges</a> 63 <a href="/about">About</a> 64 <a href="/#install">Install</a> 65 <a href="/#faq">FAQ</a> 66 </div> 67 <a href="https://play.google.com/store/apps/details?id=app.stormcast.android" class="nav-cta"> 68 <svg viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2.5" stroke-linecap="round" stroke-linejoin="round"> 69 <path d="M21 15v4a2 2 0 0 1-2 2H5a2 2 0 0 1-2-2v-4"/> 70 <polyline points="7 10 12 15 17 10"/> 71 <line x1="12" y1="15" x2="12" y2="3"/> 72 </svg> 73 Get the App 74 </a> 75 </div> 76</div> 77 78<!-- -- HERO ------------------------------------------------------------ --> 79<section class="wrap" style="padding-top:140px;max-width:920px;text-align:center;"> 80 <span class="eyebrow" style="justify-content:center;display:inline-flex;"> 81 <span class="dot"></span>WEATHER SAFETY BLOG 82 </span> 83 84 <h1 class="hero-title" style="margin-top:18px;"> 85 <span class="word">Know</span> 86 <span class="word">what</span> 87 <span class="word">to</span> 88 <span class="word">do</span> 89 <br /> 90 <span class="word accent">before</span> 91 <span class="word accent">it</span> 92 <span class="word accent">happens.</span> 93 </h1> 94 95 <p class="hero-sub" style="max-width:640px;margin-left:auto;margin-right:auto;"> 96 Practical guides on severe weather alerts, river flooding, radar, hurricanes, and what to actually do when conditions turn serious â from the team behind StormCast. 97 </p> 98 99 <div class="hero-cta-row" style="justify-content:center;"> 100 <a href="https://play.google.com/store/apps/details?id=app.stormcast.android" class="btn btn-primary"> 101 <svg viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2.5" stroke-linecap="round" stroke-linejoin="round"> 102 <path d="M21 15v4a2 2 0 0 1-2 2H5a2 2 0 0 1-2-2v-4"/> 103 <polyline points="7 10 12 15 17 10"/> 104 <line x1="12" y1="15" x2="12" y2="3"/> 105 </svg> 106 Download on Google Play 107 </a> 108 <a href="#guides" class="btn btn-ghost"> 109 Browse all guides 110 <svg viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><line x1="5" y1="12" x2="19" y2="12"/><polyline points="12 5 19 12 12 19"/></svg> 111 </a> 112 </div> 113 114 <div class="hero-meta" style="justify-content:center;"> 115 <span class="ok">● 32 GUIDES</span> 116 <span class="sep"></span> 117 <span>FREE TO READ</span> 118 <span class="sep"></span> 119 <span>NO SIGN-UP REQUIRED</span> 120 </div> 121</section> 122 123<main class="cp-wrap" style="padding-top:0;"> 124 125 <!-- -- GUIDES ----------------------------------------------------------- --> 126 <section class="features" id="guides"> 127 <div class="wrap"> 128 <div class="features-head"> 129 <span class="eyebrow"><span class="dot"></span>ALL GUIDES</span> 130 <h2 class="section-title">Everything you need <span class="accent">to stay ahead of the storm</span>.</h2> 131 <p class="section-sub" style="margin-left:auto;margin-right:auto;">Plain-English explainers, no jargon â written to actually help you make a decision when it matters.</p> 132 </div> 133 134 <div class="features-grid"> 135 136 <article class="feat"> 137 <div class="feat-icon-bg" style="background:rgba(239,68,68,0.1);border-color:rgba(239,68,68,0.25);"> 138 <svg width="22" height="22" viewBox="0 0 24 24" fill="none" stroke="#ef4444" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><path d="M10.29 3.86L1.82 18a2 2 0 0 0 1.71 3h16.94a2 2 0 0 0 1.71-3L13.71 3.86a2 2 0 0 0-3.42 0z"/><line x1="12" y1="9" x2="12" y2="13"/>
138<line x1="12" y1="17" x2="12.01" y2="17"/></svg> 139 </div> 140 <h3>Tornado Watch vs. Warning: What's the Difference?</h3> 141 <p>One means conditions are right. The other means take shelter now. Here's how to tell them apart and what to do for each.</p> 142 <div class="feat-meta"><span>Tornado safety</span><span>Explainer</span></div> 143 <a href="/blog/tornado-watch-vs-warning" class="feat-link">Read guide →</a> 144 </article> 145 146 <article class="feat"> 147 <div class="feat-icon-bg" style="background:rgba(79,141,244,0.1);border-color:rgba(79,141,244,0.25);"> 148 <svg width="22" height="22" viewBox="0 0 24 24" fill="none" stroke="#4f8df4" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><path d="M12 2.69l5.66 5.66a8 8 0 1 1-11.31 0z"/></svg> 149 </div> 150 <h3>River Flood Levels Explained</h3> 151 <p>Action stage, minor flood, moderate flood, major flood â what each level means and when to start paying attention.</p> 152 <div class="feat-meta"><span>River flooding</span><span>Explainer</span></div> 153 <a href="/blog/river-flood-levels" class="feat-link">Read guide →</a> 154 </article> 155 156 <article class="feat"> 157 <div class="feat-icon-bg" style="background:rgba(168,85,247,0.1);border-color:rgba(168,85,247,0.25);"> 158 <svg width="22" height="22" viewBox="0 0 24 24" fill="none" stroke="#a78bfa" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><path d="M19.07 4.93A10 10 0 0 0 6.99 3.34"/><path d="M4 6h.01"/><path d="M2.29 9.62A10 10 0 1 0 21.31 8.35"/><path d="M16.24 7.76A6 6 0 1 0 8.23 16.67"/><path d="M12 18h.01"/><path d="M17.99 11.66A6 6 0 0 1 15.77 16.67"/><circle cx="12" cy="12" r="2"/><path d="m13.41 10.59 5.66-5.66"/></svg> 159 </div> 160 <h3>What Kp Index Do You Need to See the Northern Lights?</h3> 161 <p>A plain-English guide to the Kp index, geomagnetic storms, and how far south the aurora can actually reach.</p> 162 <div class="feat-meta"><span>Space weather</span><span>Explainer</span></div> 163 <a href="/blog/northern-lights-kp-index" class="feat-link">Read guide →</a> 164 </article> 165 166 <article class="feat"> 167 <div class="feat-icon-bg" style="background:rgba(249,115,22,0.1);border-color:rgba(249,115,22,0.25);"> 168 <svg width="22" height="22" viewBox="0 0 24 24" fill="none" stroke="#f97316" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><path d="M18 8A6 6 0 0 0 6 8"/><path d="M14 12a2 2 0 1 1-4 0 2 2 0 0 1 4 0z"/><path d="M20.5 5.5a10 10 0 0 0-17 0"/><line x1="12" y1="12" x2="12" y2="21"/><line x1="9" y1="21" x2="15" y2="21"/></svg> 169 </div> 170 <h3>What to Do During a Flash Flood Warning</h3> 171 <p>Flash flooding is the #1 weather killer in the US. Here's what to do immediately, where to go, and what to avoid.</p> 172 <div class="feat-meta"><span>Flash flooding</span><span>Preparedness</span></div> 173 <a href="/blog/flash-flood-warning" class="feat-link">Read guide →</a> 174 </article> 175 176 <article class="feat"> 177 <div class="feat-icon-bg" style="background:rgba(34,197,94,0.1);border-color:rgba(34,197,94,0.25);"> 178 <svg width="22" height="22" viewBox="0 0 24 24" fill="none" stroke="#22c55e" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><path d="M20 10c0 6-8 12-8 12s-8-6-8-12a8 8 0 0 1 16 0z"/><circle cx="12" cy="10" r="3"/></svg> 179 </div> 180 <h3>AQI Levels Explained â What the Numbers Mean</h3> 181 <p>The Air Quality Index runs from 0 to 500. Here's what each level means, when to stay inside, and who's most at risk.</p> 182 <div class="feat-meta"><span>Air quality</span><span>Explainer</span></div> 183 <a href="/blog/aqi-levels-explained" class="feat-link">Read guide →</a> 184 </article> 185 186 <article class="feat"> 187 <div class="feat-icon-bg" style="background:rgba(6,182,212,0.1);border-color:rgba(6,182,212,0.25);"> 188 <svg width="22" height="22" viewBox="0 0 24 24" fill="none" stroke="#06b6d4" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><path d="M17.7 7.7a2.5 2.5 0 1 1 1.8 4.3H2"/>
188<path d="M9.6 4.6A2 2 0 1 1 11 8H2"/><path d="M12.6 19.4A2 2 0 1 0 14 16H2"/></svg> 189 </div> 190 <h3>Hurricane Categories Explained â Cat 1 Through Cat 5</h3> 191 <p>The Saffir-Simpson scale, what each category means on the ground, and why wind speed isn't the whole story.</p> 192 <div class="feat-meta"><span>Hurricanes</span><span>Explainer</span></div> 193 <a href="/blog/hurricane-categories-explained" class="feat-link">Read guide →</a> 194 </article> 195 196 <article class="feat"> 197 <div class="feat-icon-bg" style="background:rgba(245,158,11,0.1);border-color:rgba(245,158,11,0.25);"> 198 <svg width="22" height="22" viewBox="0 0 24 24" fill="none" stroke="#f59e0b" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><path d="M18 8A6 6 0 0 0 6 8c0 7-3 9-3 9h18s-3-2-3-9"/><path d="M13.73 21a2 2 0 0 1-3.46 0"/><line x1="12" y1="2" x2="12" y2="4"/></svg> 199 </div> 200 <h3>Severe Thunderstorm Watch vs. Warning</h3> 201 <p>What makes a thunderstorm "severe," the difference between a watch and warning, and the new damage tags you need to know.</p> 202 <div class="feat-meta"><span>Severe storms</span><span>Explainer</span></div> 203 <a href="/blog/severe-thunderstorm-warning" class="feat-link">Read guide →</a> 204 </article> 205 206 <article class="feat"> 207 <div class="feat-icon-bg" style="background:rgba(14,165,233,0.1);border-color:rgba(14,165,233,0.25);"> 208 <svg width="22" height="22" viewBox="0 0 24 24" fill="none" stroke="#38bdf8" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><rect x="3" y="3" width="7" height="7" rx="1"/><rect x="14" y="3" width="7" height="7" rx="1"/><rect x="3" y="14" width="7" height="7" rx="1"/><rect x="14" y="14" width="7" height="7" rx="1"/></svg> 209 </div> 210 <h3>Winter Storm Warnings Explained</h3> 211 <p>Winter storm warning, ice storm warning, blizzard warning, wind chill advisory â what each one means and how to prepare.</p> 212 <div class="feat-meta"><span>Winter weather</span><span>Explainer</span></div> 213 <a href="/blog/winter-storm-warnings" class="feat-link">Read guide →</a> 214 </article> 215 216 <article class="feat"> 217 <div class="feat-icon-bg" style="background:rgba(239,68,68,0.1);border-color:rgba(239,68,68,0.25);"> 218 <svg width="22" height="22" viewBox="0 0 24 24" fill="none" stroke="#ef4444" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><path d="M10.29 3.86L1.82 18a2 2 0 0 0 1.71 3h16.94a2 2 0 0 0 1.71-3L13.71 3.86a2 2 0 0 0-3.42 0z"/><line x1="12" y1="9" x2="12" y2="13"/><line x1="12" y1="17" x2="12.01" y2="17"/></svg> 219 </div> 220 <h3>EF Scale Tornado Ratings Explained</h3> 221 <p>The Enhanced Fujita Scale rates tornadoes EF0 through EF5 based on damage. Here's what each rating means and the wind speeds involved.</p> 222 <div class="feat-meta"><span>Tornado safety</span><span>Explainer</span></div> 223 <a href="/blog/ef-scale-tornado-ratings" class="feat-link">Read guide →</a> 224 </article> 225 226 <article class="feat"> 227 <div class="feat-icon-bg" style="background:rgba(45,212,191,0.1);border-color:rgba(45,212,191,0.25);"> 228 <svg width="22" height="22" viewBox="0 0 24 24" fill="none" stroke="#2dd4bf" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><polygon points="3 6 9 3 15 6 21 3 21 18 15 21 9 18 3 21"/><line x1="9" y1="3" x2="9" y2="18"/><line x1="15" y1="6" x2="15" y2="21"/></svg> 229 </div> 230 <h3>How to Read Weather Radar</h3> 231 <p>What the radar colors mean, how to spot rotation and hook echoes, and how to track storms heading your way.</p> 232 <div class="feat-meta"><span>Radar</span><span>Explainer</span></div> 233 <a href="/blog/how-to-read-weather-radar" class="feat-link">Read guide →</a> 234 </article> 235 236 <article class="feat"> 237 <div class="feat-icon-bg" style="background:rgba(79,141,244,0.1);border-color:rgba(79,141,244,0.25);"> 238 <svg width="22" height="22" viewBox="0 0 24 24" fill="none" stroke="#4f8df4" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><path d="M12 2.69l5.66 5.66a8 8 0 1 1-11.31 0z"/></svg> 239 </div> 240 <h3>What Does Flood Stage Mean?</h3> 241 <p>Action stage, minor flood, moderate flood, major flood â how the NWS defines each level and what they mean for your river.</p> 242 <div class="feat-meta"><span>River flooding</span><span>Explainer</span></div> 243 <a href="/blog/what-does-flood-stage-mean" class="feat-link">Read guide →</a> 244 </article> 245 246 <article class="feat"> 247 <div class="feat-icon-bg" style="background:rgba(249,115,22,0.1);border-color:rgba(249,115,22,0.25);"> 248 <svg width="22" height="22" viewBox="0 0 24 24" fill="none" stroke="#f97316" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><path d="M2 12c1.5-2 3-2 4.5 0s3 2 4.5 0 3-2 4.5 0 3 2 4.5 0"/><path d="M2 17c1.5-2 3-2 4.5 0s3 2 4.5 0 3-2 4.5 0 3 2 4.5 0"/><path d="M2 7c1.5-2 3-2 4.5 0s3 2 4.5 0 3-2 4.5 0 3 2 4.5 0"/></svg> 249 </div> 250 <h3>Derecho vs. Tornado</h3> 251 <p>
251Both produce 100+ mph winds, but a derecho's damage path can be hundreds of miles wide. Here's how they differ.</p> 252 <div class="feat-meta"><span>Severe storms</span><span>Explainer</span></div> 253 <a href="/blog/derecho-vs-tornado" class="feat-link">Read guide →</a> 254 </article> 255 256 <article class="feat"> 257 <div class="feat-icon-bg" style="background:rgba(99,102,241,0.1);border-color:rgba(99,102,241,0.25);"> 258 <svg width="22" height="22" viewBox="0 0 24 24" fill="none" stroke="#818cf8" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><rect x="9" y="2" width="6" height="11" rx="3"/><path d="M19 10a7 7 0 0 1-14 0"/><line x1="12" y1="19" x2="12" y2="22"/><line x1="8" y1="22" x2="16" y2="22"/></svg> 259 </div> 260 <h3>Best Weather Alert App for Android</h3> 261 <p>What to look for in a severe weather app â speed, NWS data, river monitoring, and features most people don't think about.</p> 262 <div class="feat-meta"><span>App guide</span><span>Explainer</span></div> 263 <a href="/blog/best-weather-alert-app" class="feat-link">Read guide →</a> 264 </article> 265 266 <article class="feat"> 267 <div class="feat-icon-bg" style="background:rgba(249,115,22,0.1);border-color:rgba(249,115,22,0.25);"> 268 <svg width="22" height="22" viewBox="0 0 24 24" fill="none" stroke="#f97316" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><path d="M8.5 14.5A2.5 2.5 0 0 0 11 12c0-1.38-.5-2-1-3-1.072-2.143-.224-4.054 2-6 .5 2.5 2 4.9 4 6.5 2 1.6 3 3.5 3 5.5a7 7 0 0 1-14 0c0-1.153.433-2.294 1-3a2.5 2.5 0 0 0 2.5 2.5z"/></svg> 269 </div> 270 <h3>Heat Index Explained</h3> 271 <p>When the thermometer says 95°F but it feels like 112°F â how the heat index works and when heat becomes deadly.</p> 272 <div class="feat-meta"><span>Heat safety</span><span>Explainer</span></div> 273 <a href="/blog/heat-index-explained" class="feat-link">Read guide →</a> 274 </article> 275 276 <article class="feat"> 277 <div class="feat-icon-bg" style="background:rgba(244,63,94,0.1);border-color:rgba(244,63,94,0.25);"> 278 <svg width="22" height="22" viewBox="0 0 24 24" fill="none" stroke="#f43f5e" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><path d="M20 10c0 6-8 12-8 12s-8-6-8-12a8 8 0 0 1 16 0z"/><circle cx="12" cy="10" r="3"/></svg> 279 </div> 280 <h3>Tornado Preparedness Checklist</h3> 281 <p>What to have ready before tornado season, what to do during a warning, and what to do after a tornado passes.</p> 282 <div class="feat-meta"><span>Tornado safety</span><span>Preparedness</span></div> 283 <a href="/blog/tornado-preparedness-checklist" class="feat-link">Read guide →</a> 284 </article> 285 286 <article class="feat"> 287 <div class="feat-icon-bg" style="background:rgba(6,182,212,0.1);border-color:rgba(6,182,212,0.25);"> 288 <svg width="22" height="22" viewBox="0 0 24 24" fill="none" stroke="#06b6d4" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><path d="M17.7 7.7a2.5 2.5 0 1 1 1.8 4.3H2"/><path d="M9.6 4.6A2 2 0 1 1 11 8H2"/><path d="M12.6 19.4A2 2 0 1 0 14 16H2"/></svg> 289 </div> 290 <h3>Hurricane Preparedness Guide</h3> 291 <p>Essential supplies, evacuation planning, protecting your home, and what to do when a hurricane watch or warning is issued.</p> 292 <div class="feat-meta"><span>Hurricanes</span><span>Preparedness</span></div> 293 <a href="/blog/hurricane-preparedness-guide" class="feat-link">Read guide →</a> 294 </article> 295 296 <article class="feat"> 297 <div class="feat-icon-bg" style="background:rgba(99,102,241,0.1);border-color:rgba(99,102,241,0.25);"> 298 <svg width="22" height="22" viewBox="0 0 24 24" fill="none" stroke="#818cf8" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><rect x="9" y="2" width="6" height="11" rx="3"/><path d="M19 10a7 7 0 0 1-14 0"/><line x1="12" y1="19" x2="12" y2="22"/><line x1="8" y1="22" x2="16" y2="22"/></svg> 299 </div> 300 <h3>Weather Radio vs. Phone Alerts</h3> 301 <p>NOAA Weather Radio and phone apps both deliver warnings, but they work differently. Here's why you should have both.</p> 302 <div class="feat-meta"><span>App guide</span><span>Explainer</span></div> 303 <a href="/blog/weather-radio-vs-phone-alerts" class="feat-link">Read guide →</a> 304 </article> 305 306 <article class="feat"> 307 <div class="feat-icon-bg" style="background:rgba(120,113,108,0.1);border-color:rgba(120,113,108,0.25);"> 308 <svg width="22" height="22" viewBox="0 0 24 24" fill="none" stroke="#a8a29e" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><path d="M2 12h5l2-9 4 18 2-9h7"/></svg> 309 </div> 310 <h3>Earthquake Magnitude Scale Explained</h3> 311 <p>Richter vs. moment magnitude, and why a magnitude 6 quake is about 1,000 times stronger than a magnitude 3, not twice as strong.</p> 312 <div class="feat-meta"><span>Earthquakes</span><span>Explainer</span></div> 313 <a href="/blog/earthquake-magnitude-scale-explained" class="feat-link">Read guide →</a> 314 </article> 315 316 <article class="feat"> 317 <div class="feat-icon-bg" style="background:rgba(120,113,108,0.1);border-color:rgba(120,113,108,0.25);"> 318 <svg width="22" height="22" viewBox="0 0 24 24" fill="none" stroke="#a8a29e" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><circle cx="12" cy="12" r="10"/><polyline points="12 6 12 12 16 14"/></svg> 319 </div> 320 <h3>Earthquake Early Warning Explained</h3> 321 <p>Earthquakes can't be predicted, but seconds of warning before shaking arrives is possible. Here's how ShakeAlert and early warning actually work.</p> 322 <div class="feat-meta"><span>Earthquakes</span><span>Explainer</span></div> 323 <a href="/blog/earthquake-early-warning-explained" class="feat-link">Read guide →</a> 324 </article> 325 326 <article class="feat"> 327 <div class="feat-icon-bg" style="background:rgba(168,85,247,0.1);border-color:rgba(168,85,247,0.25);"> 328 <svg width="22" height="22" viewBox="0 0 24 24" fill="none" stroke="#a78bfa" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><path d="M19.07 4.93A10 10 0 0 0 6.99 3.34"/><path d="M4 6h.01"/><path d="M2.29 9.62A10 10 0 1 0 21.31 8.35"/><path d="M16.24 7.76A6 6 0 1 0 8.23 16.67"/><path d="M12 18h.01"/><path d="M17.99 11.66A6 6 0 0 1 15.77 16.67"/><circle cx="12" cy="12" r="2"/><path d="m13.41 10.59 5.66-5.66"/></svg> 329 </div> 330 <h3>Geomagnetic Storm Scale Explained (G1–G5)</h3> 331 <p>What causes a geomagnetic storm, what each NOAA G-scale level actually does to power grids and GPS, and how far south the aurora reaches.</p> 332 <div class="feat-meta"><span>Space weather</span><span>Explainer</span></div> 333 <a href="/blog/geomagnetic-storm-scale-explained" class="feat-link">Read guide →</a> 334 </article> 335 336 <article class="feat"> 337 <div class="feat-icon-bg" style="background:rgba(249,115,22,0.1);border-color:rgba(249,115,22,0.25);"> 338 <svg width="22" height="22" viewBox="0 0 24 24" fill="none" stroke="#f97316" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><circle cx="12" cy="12" r="5"/><line x1="12" y1="1" x2="12" y2="3"/><line x1="12" y1="21" x2="12" y2="23"/><line x1="4.22" y1="4.22" x2="5.64" y2="5.64"/><line x1="18.36" y1="18.36" x2="19.78" y2="19.78"/><line x1="1" y1="12" x2="3" y2="12"/><line x1="21" y1="12" x2="23" y2="12"/><line x1="4.22" y1="19.78" x2="5.64" y2="18.36"/><line x1="18.36" y1="5.64" x2="19.78" y2="4.22"/></svg> 339 </div> 340 <h3>Solar Flare Classes Explained (A, B, C, M, X)</h3> 341 <p>What each solar flare letter class means, why X-class flares make headlines, and how flares differ from the CMEs that actually drive the aurora.</p> 342 <div class="feat-meta"><span>Space weather</span><span>Explainer</span></div> 343 <a href="/blog/solar-flare-classes-explained" class="feat-link">Read guide →</a> 344 </article> 345 346 <article class="feat"> 347 <div class="feat-icon-bg" style="background:rgba(249,115,22,0.1);border-color:rgba(249,115,22,0.25);"> 348 <svg width="22" height="22" viewBox="0 0 24 24" fill="none" stroke="#f97316" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><path d="M18 8A6 6 0 0 0 6 8c0 7-3 9-3 9h18s-3-2-3-9"/><path d="M13.73 21a2 2 0 0 1-3.46 0"/></svg> 349 </div> 350 <h3>Red Flag Warning Explained (Fire Weather)</h3> 351 <p>Low humidity, strong wind, and dry fuels combine to make any spark dangerous. Here's what triggers the warning and what to actually do.</p> 352 <div class="feat-meta"><span>Fire weather</span><span>Explainer</span></div> 353 <a href="/blog/red-flag-warning-explained" class="feat-link">Read guide →</a> 354 </article> 355 356 <article class="feat"> 357 <div class="feat-icon-bg" style="background:rgba(239,68,68,0.1);border-color:rgba(239,68,68,0.25);"> 358 <svg width="22" height="22" viewBox="0 0 24 24" fill="none" stroke="#ef4444" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><path d="M10.29 3.86L1.82 18a2 2 0 0 0 1.71 3h16.94a2 2 0 0 0 1.71-3L13.71 3.86a2 2 0 0 0-3.42 0z"/><line x1="12" y1="9" x2="12" y2="13"/>
358<line x1="12" y1="17" x2="12.01" y2="17"/></svg> 359 </div> 360 <h3>Excessive Heat Warning vs. Heat Advisory</h3> 361 <p>Both mean dangerous heat is coming â here's what separates them, and the difference between heat exhaustion and heat stroke.</p> 362 <div class="feat-meta"><span>Heat safety</span><span>Explainer</span></div> 363 <a href="/blog/excessive-heat-warning-vs-advisory" class="feat-link">Read guide →</a> 364 </article> 365 366 <article class="feat"> 367 <div class="feat-icon-bg" style="background:rgba(56,189,248,0.1);border-color:rgba(56,189,248,0.25);"> 368 <svg width="22" height="22" viewBox="0 0 24 24" fill="none" stroke="#38bdf8" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><path d="M9.59 4.59A2 2 0 1 1 11 8H2m10.59 11.41A2 2 0 1 0 14 16H2m15.73-8.27A2.5 2.5 0 1 1 19.5 12H2"/></svg> 369 </div> 370 <h3>High Wind Warning vs. Wind Advisory</h3> 371 <p>Specific wind speed thresholds separate these two â here's what triggers each and how they differ from a severe thunderstorm.</p> 372 <div class="feat-meta"><span>Wind</span><span>Explainer</span></div> 373 <a href="/blog/high-wind-warning-vs-advisory" class="feat-link">Read guide →</a> 374 </article> 375 376 <article class="feat"> 377 <div class="feat-icon-bg" style="background:rgba(167,139,250,0.1);border-color:rgba(167,139,250,0.25);"> 378 <svg width="22" height="22" viewBox="0 0 24 24" fill="none" stroke="#a78bfa" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><path d="M20 16.2A4.5 4.5 0 0 0 17.5 8h-1.8A7 7 0 1 0 4 14.9"/><path d="M12 12v9"/><path d="m8 17 4 4 4-4"/></svg> 379 </div> 380 <h3>What Is a Supercell?</h3> 381 <p>The rotating updraft behind the strongest tornadoes, and how to spot the hook echo and mesocyclone on radar.</p> 382 <div class="feat-meta"><span>Storm mechanics</span><span>Explainer</span></div> 383 <a href="/blog/what-is-a-supercell" class="feat-link">Read guide →</a> 384 </article> 385 386 <article class="feat"> 387 <div class="feat-icon-bg" style="background:rgba(56,189,248,0.1);border-color:rgba(56,189,248,0.25);"> 388 <svg width="22" height="22" viewBox="0 0 24 24" fill="none" stroke="#38bdf8" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><path d="M20 16.2A4.5 4.5 0 0 0 17.5 8h-1.8A7 7 0 1 0 4 14.9"/><path d="M12 12v9"/><path d="m8 17 4 4 4-4"/></svg> 389 </div> 390 <h3>Microburst Explained</h3> 391 <p>A sudden, localized downdraft that can hit 100+ mph â and can develop faster than radar can catch it.</p> 392 <div class="feat-meta"><span>Storm mechanics</span><span>Explainer</span></div> 393 <a href="/blog/microburst-explained" class="feat-link">Read guide →</a> 394 </article> 395 396 <article class="feat"> 397 <div class="feat-icon-bg" style="background:rgba(45,212,191,0.1);border-color:rgba(45,212,191,0.25);"> 398 <svg width="22" height="22" viewBox="0 0 24 24" fill="none" stroke="#2dd4bf" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><path d="M12 2.69l5.66 5.66a8 8 0 1 1-11.31 0z"/></svg> 399 </div> 400 <h3>Cold Front vs. Warm Front</h3> 401 <p>Two air masses colliding, two very different weather outcomes. Here's what actually changes when each one passes.</p> 402 <div class="feat-meta"><span>Storm mechanics</span><span>Explainer</span></div> 403 <a href="/blog/cold-front-vs-warm-front" class="feat-link">Read guide →</a> 404 </article> 405 406 <article class="feat"> 407 <div class="feat-icon-bg" style="background:rgba(250,204,21,0.1);border-color:rgba(250,204,21,0.25);"> 408 <svg width="22" height="22" viewBox="0 0 24 24" fill="none" stroke="#facc15" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><path d="M13 2 3 14h9l-1 8 10-12h-9l1-8z"/></svg> 409 </div> 410 <h3>The 30-30 Rule for Lightning Safety</h3> 411 <p>Count the seconds between flash and thunder, divide by five â here's how to use that number to actually stay safe.</p> 412 <div class="feat-meta"><span>Lightning safety</span><span>Preparedness</span></div> 413 <a href="/blog/lightning-safety-30-30-rule" class="feat-link">Read guide →</a> 414 </article> 415 416 <article class="feat"> 417 <div class="feat-icon-bg" style="background:rgba(249,115,22,0.1);border-color:rgba(249,115,22,0.25);"> 418 <svg width="22" height="22" viewBox="0 0 24 24" fill="none" stroke="#f97316" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><circle cx="12" cy="12" r="10"/><polyline points="12 6 12 12 16 14"/></svg> 419 </div> 420 <h3>Watch vs. Warning: What NWS Alerts Mean</h3> 421 <p>The same three-tier structure applies across every hazard type â tornadoes, floods, winter storms, fire weather, and more.</p> 422 <div class="feat-meta"><span>App guide</span><span>Explainer</span></div> 423 <a href="/blog/watch-vs-warning-explained" class="feat-link">Read guide →</a> 424 </article> 425 426 <article class="feat"> 427 <div class="feat-icon-bg" style="background:rgba(34,197,94,0.1);border-color:rgba(34,197,94,0.25);"> 428 <svg width="22" height="22" viewBox="0 0 24 24" fill="none" stroke="#22c55e" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><path d="M20.42 4.58a5.4 5.4 0 0 0-7.65 0l-.77.78-.77-.78a5.4 5.4 0 0 0-7.65 0C1.46 6.7 1.33 10.28 4 13l8 8 8-8c2.67-2.72 2.54-6.3.42-8.42z"/></svg> 429 </div> 430 <h3>How to Build a Severe Weather Emergency Kit</h3> 431 <p>What actually belongs in a 72-hour kit â water, food, power, documents, and the items people forget until they need them.</p> 432 <div class="feat-meta"><span>Preparedness</span><span>Checklist</span></div> 433 <a href="/blog/severe-weather-emergency-kit" class="feat-link">Read guide →</a> 434 </article> 435 436 <article class="feat"> 437 <div class="feat-icon-bg" style="background:rgba(120,113,108,0.1);border-color:rgba(120,113,108,0.25);"> 438 <svg width="22" height="22" viewBox="0 0 24 24" fill="none" stroke="#a8a29e" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><path d="M4 11a9 9 0 0 1 9-9"/><path d="M4 11a9 9 0 0 0 9 9"/><circle cx="4" cy="11" r="2"/><circle cx="13" cy="20" r="2"/></svg> 439 </div> 440 <h3>NOAA Weather Radio: Do You Still Need One?</h3> 441 <p>Phones do most of what weather radio does now â except in the specific situations where phones fail entirely.</p> 442 <div class="feat-meta"><span>App guide</span><span>Explainer</span></div> 443 <a href="/blog/noaa-weather-radio-2026" class="feat-link">Read guide →</a> 444 </article> 445 446 <article class="feat"> 447 <div class="feat-icon-bg" style="background:rgba(56,189,248,0.1);border-color:rgba(56,189,248,0.25);"> 448 <svg width="22" height="22" viewBox="0 0 24 24" fill="none" stroke="#38bdf8" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><rect x="5" y="2" width="14" height="20" rx="2"/>
448<line x1="12" y1="18" x2="12.01" y2="18"/></svg> 449 </div> 450 <h3>What to Do During a Power Outage in a Storm</h3> 451 <p>Generator carbon monoxide safety, how long food actually stays safe, and how to conserve your phone battery.</p> 452 <div class="feat-meta"><span>Preparedness</span><span>Safety</span></div> 453 <a href="/blog/power-outage-storm-safety" class="feat-link">Read guide →</a> 454 </article> 455 456 </div> 457 </div> 458 </section> 459 460</main> 461 462<footer> 463 <div class="wrap"> 464 <div class="footer-grid"> 465 <div class="footer-brand"> 466 <img src="../favicon.png" alt="StormCast" /> 467 <p>Real-time severe weather alerts, river monitoring, and emergency scanner streams â anywhere in the United States. Available now on Google Play for early access.</p> 468 </div> 469 <div class="footer-col"> 470 <h4>Product</h4> 471 <a href="/#features">Features</a> 472 <a href="/#architecture">Architecture</a> 473 <a href="/#install">Install</a> 474 <a href="/#faq">FAQ</a> 475 <a href="/about">About</a> 476 <a href="/status">System Status</a> 477 <a href="/download-windows">Download for Windows</a> 478 </div> 479 <div class="footer-col"> 480 <h4>Alert Types</h4> 481 <a href="/alerts">Live Alert Map</a> 482 <a href="/tornado-alerts">Tornado Alerts</a> 483 <a href="/flood-alerts">Flood Alerts</a> 484 <a href="/lightning-alerts">Lightning Alerts</a> 485 <a href="/earthquake-alerts">Earthquake Alerts</a> 486 <a href="/hurricane-tracker">Hurricane Tracker</a> 487 <a href="/fire-weather-alerts">Fire Weather</a> 488 <a href="/frost-alerts">Frost & Freeze</a> 489 <a href="/air-quality-alerts">Air Quality</a> 490 <a href="/aurora-alerts">Aurora & Space Weather</a> 491 <a href="/rain-nowcast">Rain Nowcast</a> 492 <a href="/river-level-app">River Levels</a> 493 <a href="/weather-alerts-app">Weather Alerts by City</a> 494 <a href="/scanner-radio">Scanner Radio</a> 495 <a href="/neighborhood-reports">Neighborhood Reports</a> 496 <a href="/weather-widget">Weather Widget</a> 497 498 </div> 499 <div class="footer-col"> 500 <h4>Data Sources</h4> 501 <a href="https://www.weather.gov" target="_blank">National Weather Service</a> 502 <a href="https://waterdata.usgs.gov" target="_blank">USGS Water Resources</a> 503 <a href="https://www.nhc.noaa.gov" target="_blank">National Hurricane Center</a> 504 <a href="https://www.airnow.gov" target="_blank">AirNow AQI</a> 505 </div> 506 <div class="footer-col"> 507 <h4>Legal</h4> 508 <a href="/privacy">Privacy Policy</a> 509 <a href="/terms">Terms of Service</a> 510 </div> 511 </div> 512 <div class="footer-bottom"> 513 <span>© 2026 StormCast · Android 8.0+ · iOS coming soon</span> 514 <span class="coord">NWS · USGS · NHC · AIRNOW — US nationwide coverage</span> 515 </div> 516 </div> 517</footer> 518
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