US Tornado Alert News
Tornadoes are fast-moving and unpredictable
Tornadoes are fast-moving and unpredictable, with winds that can devastate buildings and hurl debris over long distances. Survivors often face immediate dangers from collapsing structures, flying debris, and power outages. Preparedness involves identifying safe indoor areas, such as basements or interior rooms without windows, and creating go-bags with essential supplies, including food, water, and flashlights. With SimpliGO, users can access tornado preparedness programs from agencies like the National Weather Service (NWS), offering advice on how to shelter in place and protect their families. Through its RSS News Feeds, the app keeps users updated on tornado warnings and weather developments in their area, allowing them to act quickly. The app also helps users locate local stores to purchase emergency supplies like tarps, tools, and backup lighting.
Storm Prediction Center
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SPC Severe Thunderstorm Watch 621
WW 621 SEVERE TSTM ND 232200Z - 240300Z
URGENT - IMMEDIATE BROADCAST REQUESTED Severe Thunderstorm Watch Number 621 NWS Storm Prediction Center Norman OK 400 PM MDT Sun Aug 23 2026 The NWS Storm Prediction Center has issued a * Severe Thunderstorm Watch for portions of Southwest North Dakota * Effective this Sunday afternoon and evening from 400 PM until 900 PM MDT. * Primary threats include... Scattered large hail and isolated very large hail events to 2 inches in diameter possible Isolated significant damaging wind gusts to 75 mph possible SUMMARY...A few supercells with large hail up to 2 inches in diameter and isolated severe outflow gusts of 60-75 mph will be possible into this evening. The severe thunderstorm watch area is approximately along and 60 statute miles east and west of a line from 55 miles north of Dickinson ND to 30 miles west of Lemmon SD. For a complete depiction of the watch see the associated watch outline update (WOUS64 KWNS WOU1). PRECAUTIONARY/PREPAREDNESS ACTIONS... REMEMBER...A Severe Thunderstorm Watch means conditions are favorable for severe thunderstorms in and close to the watch area. Persons in these areas should be on the lookout for threatening weather conditions and listen for later statements and possible warnings. Severe thunderstorms can and occasionally do produce tornadoes. && OTHER WATCH INFORMATION...CONTINUE...WW 617...WW 618...WW 619...WW 620... AVIATION...A few severe thunderstorms with hail surface and aloft to 2 inches. Extreme turbulence and surface wind gusts to 65 knots. A few cumulonimbi with maximum tops to 500. Mean storm motion vector 32015. ...ThompsonRead more -
SPC Severe Thunderstorm Watch 620
WW 620 SEVERE TSTM MT 232150Z - 240400Z
URGENT - IMMEDIATE BROADCAST REQUESTED Severe Thunderstorm Watch Number 620 NWS Storm Prediction Center Norman OK 350 PM MDT Sun Aug 23 2026 The NWS Storm Prediction Center has issued a * Severe Thunderstorm Watch for portions of Eastern Montana * Effective this Sunday afternoon and evening from 350 PM until 1000 PM MDT. * Primary threats include... Scattered damaging winds and isolated significant gusts to 75 mph possible Isolated large hail events to 1.5 inches in diameter possible SUMMARY...Scattered high-based thunderstorms will spread eastward from central into eastern Montana through late evening. A few supercell structures with large hail will be possible initially. The threat for severe outflow gusts of 60-75 mph will increase as storms cluster over time. The severe thunderstorm watch area is approximately along and 100 statute miles east and west of a line from 55 miles north northeast of Glasgow MT to 80 miles southeast of Billings MT. For a complete depiction of the watch see the associated watch outline update (WOUS64 KWNS WOU0). PRECAUTIONARY/PREPAREDNESS ACTIONS... REMEMBER...A Severe Thunderstorm Watch means conditions are favorable for severe thunderstorms in and close to the watch area. Persons in these areas should be on the lookout for threatening weather conditions and listen for later statements and possible warnings. Severe thunderstorms can and occasionally do produce tornadoes. && OTHER WATCH INFORMATION...CONTINUE...WW 617...WW 618...WW 619... AVIATION...A few severe thunderstorms with hail surface and aloft to 1.5 inches. Extreme turbulence and surface wind gusts to 65 knots. A few cumulonimbi with maximum tops to 450. Mean storm motion vector 27030. ...ThompsonRead more -
SPC Severe Thunderstorm Watch 619
WW 619 SEVERE TSTM ID UT WY 232130Z - 240400Z
URGENT - IMMEDIATE BROADCAST REQUESTED Severe Thunderstorm Watch Number 619 NWS Storm Prediction Center Norman OK 330 PM MDT Sun Aug 23 2026 The NWS Storm Prediction Center has issued a * Severe Thunderstorm Watch for portions of Southeast Idaho Northern Utah Extreme southwest Wyoming * Effective this Sunday afternoon and evening from 330 PM until 1000 PM MDT. * Primary threats include... Scattered damaging winds and isolated significant gusts to 75 mph possible Isolated large hail events to 1.5 inches in diameter possible SUMMARY...Scattered thunderstorms are expected through late evening as a mix of cells and clusters capable of producing severe outflow gusts of 60-75 mph and isolated large hail up to 1.5 inches in diameter. The severe thunderstorm watch area is approximately along and 70 statute miles east and west of a line from 10 miles east northeast of Pocatello ID to 50 miles southwest of Salt Lake City UT. For a complete depiction of the watch see the associated watch outline update (WOUS64 KWNS WOU9). PRECAUTIONARY/PREPAREDNESS ACTIONS... REMEMBER...A Severe Thunderstorm Watch means conditions are favorable for severe thunderstorms in and close to the watch area. Persons in these areas should be on the lookout for threatening weather conditions and listen for later statements and possible warnings. Severe thunderstorms can and occasionally do produce tornadoes. && OTHER WATCH INFORMATION...CONTINUE...WW 617...WW 618... AVIATION...A few severe thunderstorms with hail surface and aloft to 1.5 inches. Extreme turbulence and surface wind gusts to 65 knots. A few cumulonimbi with maximum tops to 450. Mean storm motion vector 25030. ...ThompsonRead more -
SPC Severe Thunderstorm Watch 618
WW 618 SEVERE TSTM NE SD 232040Z - 240200Z
URGENT - IMMEDIATE BROADCAST REQUESTED Severe Thunderstorm Watch Number 618 NWS Storm Prediction Center Norman OK 240 PM MDT Sun Aug 23 2026 The NWS Storm Prediction Center has issued a * Severe Thunderstorm Watch for portions of Western and Northwestern Nebraska Western South Dakota * Effective this Sunday afternoon and evening from 240 PM until 800 PM MDT. * Primary threats include... Scattered damaging winds and isolated significant gusts to 75 mph possible Scattered large hail and isolated very large hail events to 2 inches in diameter possible SUMMARY...Widely scattered severe thunderstorms are forecast through the late afternoon and evening within the Watch area. A couple of supercells and severe multicells will yield a risk for large hail (mainly 1 to 2 inches in diameter) and severe gusts (60 to 75 mph). The severe thunderstorm watch area is approximately along and 60 statute miles east and west of a line from 35 miles northeast of Buffalo SD to 50 miles southeast of Alliance NE. For a complete depiction of the watch see the associated watch outline update (WOUS64 KWNS WOU8). PRECAUTIONARY/PREPAREDNESS ACTIONS... REMEMBER...A Severe Thunderstorm Watch means conditions are favorable for severe thunderstorms in and close to the watch area. Persons in these areas should be on the lookout for threatening weather conditions and listen for later statements and possible warnings. Severe thunderstorms can and occasionally do produce tornadoes. && OTHER WATCH INFORMATION...CONTINUE...WW 617... AVIATION...A few severe thunderstorms with hail surface and aloft to 2 inches. Extreme turbulence and surface wind gusts to 65 knots. A few cumulonimbi with maximum tops to 500. Mean storm motion vector 29020. ...SmithRead more -
SPC Severe Thunderstorm Watch 621 Status Reports
WW 0621 Status UpdatesSTATUS REPORT ON WW 621 THE SEVERE WEATHER THREAT CONTINUES ACROSS THE ENTIRE WATCH AREA. ..WEINMAN..08/24/26 ATTN...WFO...BIS... STATUS REPORT FOR WS 621 SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS NDC001-007-011-025-033-037-041-053-057-059-065-085-087-089- 240140- ND . NORTH DAKOTA COUNTIES INCLUDED ARE ADAMS BILLINGS BOWMAN DUNN GOLDEN VALLEY GRANT HETTINGER MCKENZIE MERCER MORTON OLIVER SIOUX SLOPE STARK THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
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