


Red Flag Warning
Issued by NWS Pocatello, ID
Issued by NWS Pocatello, ID
505 WWUS85 KPIH 180300 RFWPIH URGENT - FIRE WEATHER MESSAGE National Weather Service Pocatello ID 900 PM MDT Sun Aug 17 2025 IDZ410-411-413-422-425-427-475-476-180400- /O.EXP.KPIH.FW.W.0019.000000T0000Z-250818T0300Z/ Upper Snake River Valley/Idaho Falls BLM- Centennial Mountains and Snake River Range/Targhee NF- Caribou Range/Caribou NF-Sawtooth Range/Northern Sawtooth NF- Middle Snake River Valley/Twin Falls BLM north of the Snake River- Goose Creek and Raft River Valley/Southern Sawtooth NF/Twin Falls BLM south of the Snake River- East Salmon River Mountains/Salmon NF- Lemhi and Lost River Range/Challis NF- 900 PM MDT Sun Aug 17 2025 ...RED FLAG WARNING WILL EXPIRE AT 9 PM MDT THIS EVENING FOR SCATTERED THUNDERSTORMS FOR FIRE WEATHER ZONES 410, 411, 413, 422, 425, 427, 475, AND 476... Thunderstorm activity is mostly over for the evening. Thus, have have allowed the red flag warnings to expire for this evening, Sunday. There are a few thunderstorms remaining over the Ashton and Montana Divide areas but should be out of the area in around one hour. No red flags are expected tomorrow. High pressure will start building into the area. Relative humidity will drop to critical for most fire zones south of the Central mountains and the Montana Divide by tomorrow afternoon. However, winds look to be fairly light tomorrow afternoon, gusting to 15 to 20 mph with a few areas gusting to around 25 mph. Isolated thunderstorms are expected for fire zone 476 in the afternoon. $$