Chris Tomer

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A strong area of low pressure and cold front continue moving East through Tuesday with a large risk for severe weather across multiple states.<h1>Through Tuesday</h1>The severe weather threat continues overnight, especially across Kansas, Oklahoma, and parts of the Midwest. A negatively tilted upper-level trough will help maintain a very moist and unstable environment east of a dryline, while a weakening surface low moves southward. Severe storms are likely across KS, OK, TX, AR, MO, NE, and IL between Monday night and Tuesday morning. And, the entire line is moving further East.<img src="https://media.weathernationtv.com/app/uploads/2025/05/tomer svr tonight-1747703437861.jpg">This is a higher-end setup, where everything will be on the table, depending on how storms shake out. Violent tornadoes, massive hail, and hurricane-force winds will all be possible through Monday night.<img src="https://media.weathernationtv.com/app/uploads/2025/05/tomer sig threats tonight-1747703492807.jpg">On Tuesday, we remain at an ENHANCED (level 3 out of 5) risk for severe weather across portions of the Tennessee River and Lower Mississippi River Valley. Thunderstorms will continue starting Monday as the frontal boundary moves in. The warm sector could support a few bowing segments capable of producing wind damage, and the threat of large hail and tornadoes continues, too.<img src="https://media.weathernationtv.com/app/uploads/2025/05/Screenshot 2025-05-19 121835-1747678733222.png">Storms have already fired in the warm sector today and will continue to intensify this afternoon as temperatures rise. We expect discrete supercells to bring all severe weather hazards through tonight.<video src="https://media.weathernationtv.com/app/uploads/2025/05/tomer severe futurecast-1747702173691.mp4" controls="true" width="100%"></video>Know where to go in case of a tornado or severe storm warning and review your emergency kits to ensure they include essential supplies like flashlights, batteries, a weather radio, and first aid items. Be aware of the difference between a watch (conditions are favorable for severe weather) and a warning (severe weather is imminent).&nbsp;Please continue to check the forecast and stay with us at WeatherNation as further details come in.

Alana Cameron

MODERATE (level 4 out of 5) Risk for Severe Storms

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Kevin Schneider

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Showers and storms will rumble through Tuesday, packing not only a severe punch but also an efficient rain-producer punch. Loads of moisture will mean storms will come in plenty wet, but it's the multiple-round aspect that brings the flooding.<img src="https://media.weathernationtv.com/app/uploads/2025/05/tomer tn valley moisture-1747698710019.jpg">Sprinkle on top a touch of orographic lift off of the Ozark Mountains in the area, and you have a bad recipe over the next few days. A flood watch has already been issued before the first drops have fallen.<img src="https://media.weathernationtv.com/app/uploads/2025/05/Screenshot 2025-05-19 211450-1747710895791.png">3 to 6 inches of grand total rainfall will be possible, with some localized areas potentially surpassing those numbers.<img src="https://media.weathernationtv.com/app/uploads/2025/05/tomer rain forecast-1747703593813.jpg">The rainfall won't be as intense the farther north you find yourself, up to Minnesota and the Dakotas. What the rain lacks in intensity will be made up in effort, with persistent rain driving up totals. The threat of flooding will nudge eastward on Tuesday.<img src="https://media.weathernationtv.com/app/uploads/2025/05/tomer exec rainfall tuesday-1747698830384.jpg">Like every flooding situation, never try to cross water over the roadways, since only a foot of it is needed to float your vehicle. Know your risk in your home if you need to seek higher ground when a Flash Flood Warning is issued for your location.

Flooding Threat Rises With Multiple Rounds of Storms

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Alana Cameron was born and raised in Canada in the city of Mississauga, just outside of Toronto. Alana is the oldest of 4 siblings, all close in age, and grew up playing outside with them in all types of weather. After graduating high school, Alana moved to study at the University of British Columbia in Kelowna for a year before transferring to Dalhousie University in Halifax, Nova Scotia where she completed a Bachelor of Science in Physics and Atmospheric Science. Upon completion, Alana moved back to Toronto where she completed a post-grad degree in Meteorology at York University. After her post-grad, she went on to complete another post-grad in Broadcast Journalism - TV News at Fanshawe College in London, Ontario. During her final year of studies she had the privilege of interning with the best in the business in Canada at The Weather Network. Once she finished her internship, she got the call from small-town Denison, Texas where she accepted a job as an on-air meteorologist at KTEN-TV, right in tornado alley, covering severe weather from Sherman/Denison (North Texas) to Ada (Southern Oklahoma). After the most active tornado season Oklahoma had seen in May 2019 (105 tornadoes!) Alana is excited to join WeatherNation to cover weather all across the nation. If you're interested in following her on social media she can be found @alanacameronwx!

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Our stretch of record heat will persist through the work week across states including Texas, Louisiana, and Florida. Here are some of the locations we expect to tie or beat record highs and record high lows (the warmest a low temperature would be) now through Tuesday.<img src="https://media.weathernationtv.com/app/uploads/2025/05/ezgif-4e49aa6fd9b726-1747679455538.gif"> The <a target="_blank" rel="noopener noreferrer nofollow" href="https://www.weathernationtv.com/news/noaa-debuts-heatrisk-tool-nationwide">HeatRisk </a>through tonight remains at extreme for locations in Texas and moderate across the rest of the south and into Florida.<img src="https://media.weathernationtv.com/app/uploads/2025/05/Screenshot 2025-05-19 122947-1747679411377.png">As we get into the week, some locations can anticipate a cool down back to seasonable temperatures, Dallas being one of them, thanks to the recent rain.<img src="https://media.weathernationtv.com/app/uploads/2025/05/Screenshot 2025-05-19 122334-1747679418718.png">How do you stay safe in this kind of heat? It is early in the season, so many of us are seeing this type of heat for the first time this year. In light of this forecast, residents are encouraged to take heat precautions seriously. With many communities still in spring mode, it’s important to be proactive—especially in areas without widespread air conditioning or heat preparedness infrastructure.&nbsp;<img src="https://media.weathernationtv.com/app/uploads/2025/05/Screenshot 2025-05-13 074710-1747144046862.png">Tune into the local regional forecast on WeatherNation for more details.

Gulf Coast Heat Continues

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ARIZONA - The Governor of Arizona has issued a State of Emergency for the Greer Fire, burning in Apache County, as the fire surpasses 20k acres. This fire began on May 13, 2025 and was driven by wind pushing it east-northeast. The cause of the fire remains under investigation.<img src="https://media.weathernationtv.com/app/uploads/2025/05/Screenshot 2025-05-19 124853-1747680541117.png">According to the Arizona Department of Forestry and Fire Management, the fire continues to burn in the region. <div class="twitter-tweet" style="display: flex; justify-content: center" data-twitt-post-id="1924508637516493085" src="https://x.com/azstateforestry/status/1924508637516493085"></div>The fire weather concerns are continuing, with winds fanning any spark or flame into a potential wildfire. Critical fire danger (level 2 out of 3) remains for portions of New Mexico, west Texas, and Arizona.<img src="https://media.weathernationtv.com/app/uploads/2025/05/tomer sw fire-1747703701282.jpg">CALFIRE was responding to the Honey Fire, a new fire named the Idria Fire popped up and needed to be responded to as well. Red Flag Warnings remain in place for the area.<div class="twitter-tweet" style="display: flex; justify-content: center" data-twitt-post-id="1924207420316045815" src="https://x.com/CALFIRELNU/status/1924207420316045815"></div>In addition to fire concerns in the region, high winds have been leading to issues with dust storms. Ever wonder what to do if you're caught in a dust storm? Pull off the road COMPLETELY and turn off your lights as soon as possible, to prevent other cars from running into the back of you.<img src="https://media.weathernationtv.com/app/uploads/2025/05/Screenshot 2025-05-14 105044-1747241454397.png">

State of Emergency Declared for Greer Fire in Arizona

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Winter continues across the high mountains of the West! A strong trough of low pressure slides across Idaho, Wyoming, Montana, Utah, and Colorado with valley rains and heavy snow above 8,000ft.<h1>Timing</h1><video src="https://media.weathernationtv.com/app/uploads/2025/05/tomer west futurecast-1747610010003.mp4" controls="true" width="100%"></video><h1>Precipitation</h1>Heavy precipitation in the form of both rain and snow will be possible over the next couple of days and energy moves overhead. Travel could be treacherous over the mountain passes both Sunday and Monday.<img src="https://media.weathernationtv.com/app/uploads/2025/05/tomer west precip forecast-1747610051261.jpg">Snow is likely above 8,000ft across Colorado's mountains. Most places can expect 5-10 inches with up to 15 inches above 10,000ft. Winter Weather Advisories are in effect.<img src="https://media.weathernationtv.com/app/uploads/2025/05/tomer ut co wwa-1747613266000.jpg">Stay with WeatherNation for the latest.

Gulf Coast Heat Continues

State of Emergency Declared for Greer Fire in Arizona

Late Spring Snow Blankets the Western Mountains

MODERATE (level 4 out of 5) Risk for Severe Storms

Flooding Threat Rises With Multiple Rounds of Storms

Gulf Coast Heat Continues

State of Emergency Declared for Greer Fire in Arizona

Late Spring Snow Blankets the Western Mountains

MODERATE (level 4 out of 5) Risk for Severe Storms

Flooding Threat Rises With Multiple Rounds of Storms

Gulf Coast Heat Continues

State of Emergency Declared for Greer Fire in Arizona

Late Spring Snow Blankets the Western Mountains