Future

Responsive action SHOULD be taken in the near future

Colorado Severe Flash Flood Watch | Effective 08/24/2026 05:42

* WHAT...Flash flooding and debris flows caused by excessive rainfall will be possible over the Aspen Acres Burn Scar. * WHERE...Aspen Acres Burn Scar. * WHEN...From 3 PM MDT this afternoon through this evening. * IMPACTS...Heavy rainfall over the Aspen Acres Burn Scar is expected up to and during the period of the watch. Residents near the Aspen Acres Burn Scar should prepare for debris flows and stay up to date with information from local authorities. Heavy rainfall could

Colorado Severe Flash Flood Watch | Effective 08/24/2026 01:18

* WHAT...Flash flooding and debris flows caused by excessive rainfall will be possible over the Aspen Acres Burn Scar. * WHERE...Aspen Acres Burn Scar. * WHEN...From this afternoon through this evening. * IMPACTS...Heavy rainfall over the Aspen Acres Burn Scar is expected up to and during the period of the watch. Residents near the Aspen Acres Burn Scar should prepare for debris flows and stay up to date with information from local authorities. Heavy rainfall could

Guam, Northern Mariana Islands Unknown Hydrologic Outlook | Effective 08/24/2026 00:14

ESFGUM This Hydrologic Outlook is for Guam, Rota, Tinian, and Saipan. A reinvigorated monsoon trough with a potential embedded tropical disturbance that was previously expected to develop and bring periods of heavy rainfall to the Marianas beginning Wednesday, has continued to fallen behind. The mid to long-term model guidance continues to show a downward trend in any potential cyclogenesis, with the enhanced monsoon pattern now likely to fall apart over the next few

California Severe Extreme Heat Watch | Effective 08/23/2026 21:40

* WHAT...Temperatures of 85 to 92 possible. * WHERE...Orange County Coastal Areas and San Diego County Coastal Areas. * WHEN...From Tuesday morning through Friday evening. * IMPACTS...Heat related illnesses increase significantly during extreme heat events. * ADDITIONAL DETAILS...Overnight lows around 5 to 7 degrees above normal will limit relief from the heat, especially for those without adequate cooling. Drink plenty of fluids, stay in an air-conditioned room, stay out of

California Severe Extreme Heat Watch | Effective 08/23/2026 21:40

* WHAT...Temperatures in the mid to upper 90s below 5000 ft MSL. * WHERE...San Bernardino County Mountains. * WHEN...For the Heat Advisory, until 10 AM PDT Tuesday. For the Extreme Heat Watch, from Tuesday morning through Friday evening. * IMPACTS...Heat related illnesses increase significantly during extreme heat events. Hot temperatures may cause heat illnesses. Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors.

California Severe Extreme Heat Watch | Effective 08/23/2026 21:40

* WHAT...Dangerously hot conditions with temperatures of 101 to 108 possible. * WHERE...Apple and Lucerne Valleys. * WHEN...From Tuesday morning through Friday evening. * IMPACTS...Heat related illnesses increase significantly during extreme heat events. * ADDITIONAL DETAILS...Low temperatures 5 to 10 degrees above normal will limit relief from the heat. Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors.

California Severe Extreme Heat Watch | Effective 08/23/2026 21:40

* WHAT...Temperatures 90 to 100 for Inland Orange County, 90 to 102 for the San Diego County Valleys, 100 to 108 for the Inland Empire and 89 to 101 in the mountains. * WHERE...Orange County Inland Areas, Riverside County Mountains, San Bernardino and Riverside County Valleys-The Inland Empire, San Diego County Mountains, San Diego County Valleys, and Santa Ana Mountains and Foothills. * WHEN...For the Heat Advisory, until 10 AM PDT Tuesday. For the Extreme Heat Watch, from Tuesday morning through Friday evening.

Montana Severe Severe Thunderstorm Watch | Effective 08/23/2026 20:18

SEVERE THUNDERSTORM WATCH 620 REMAINS VALID UNTIL 10 PM MDT THIS EVENING FOR THE FOLLOWING AREAS IN MONTANA THIS WATCH INCLUDES 9 COUNTIES IN NORTHEAST MONTANA DANIELS DAWSON GARFIELD MCCONE PRAIRIE RICHLAND ROOSEVELT SHERIDAN WIBAUX THIS INCLUDES THE CITIES OF CIRCLE, CULBERTSON, FAIRVIEW, GLENDIVE, JORDAN, MEDICINE LAKE, PLENTYWOOD, POPLAR, RICHEY, SCOBEY, SIDNEY, TERRY, WIBAUX, AND WOLF POINT.

Montana Severe Severe Thunderstorm Watch | Effective 08/23/2026 19:31

SEVERE THUNDERSTORM WATCH 620 REMAINS VALID UNTIL 10 PM MDT THIS EVENING FOR THE FOLLOWING AREAS IN MONTANA THIS WATCH INCLUDES 7 COUNTIES IN SOUTH CENTRAL MONTANA BIG HORN IN SOUTHEAST MONTANA CARTER CUSTER FALLON POWDER RIVER ROSEBUD TREASURE THIS INCLUDES THE CITIES OF ASHLAND, BAKER, BROADUS, COLSTRIP, CROW AGENCY, EKALAKA, FORSYTH, HARDIN, HYSHAM, LAME DEER, AND MILES CITY.
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