422 WGUS55 KPIH 180400 FFWPIH IDC019-051-180800- /O.NEW.KPIH.FF.W.0010.260918T0400Z-260918T0800Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ BULLETIN - EAS ACTIVATION REQUESTED Flash Flood Warning National Weather Service Pocatello ID 1000 PM MDT Thu Sep 17 2026 The National Weather Service in Pocatello has issued a * Flash Flood Warning for... North Central Bonneville County in southeastern Idaho... South Central Jefferson County in southeastern Idaho... * Until 200 AM MDT. * At 1000 PM MDT, Doppler radar indicated thunderstorms producing heavy rain across the warned area. Flash flooding is ongoing or expected to begin shortly. HAZARD...Flash flooding caused by thunderstorms. SOURCE...Radar indicated. IMPACT...Flash flooding of small creeks and streams, urban areas, highways, streets and underpasses as well as other poor drainage and low-lying areas. * Some locations that will experience flash flooding include... Idaho Falls, Rigby, Lorenzo, Ucon, Menan and Lewisville. PRECAUTIONARY/PREPAREDNESS ACTIONS... Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. && LAT...LON 4375 11200 4375 11195 4376 11195 4376 11191 4374 11189 4374 11187 4373 11187 4346 11200 4351 11207 4351 11210 FLASH FLOOD...RADAR INDICATED $$ GK  738 WUUS55 KPIH 180405 SVRPIH IDC005-011-071-077-180445- /O.NEW.KPIH.SV.W.0056.260918T0405Z-260918T0445Z/ BULLETIN - IMMEDIATE BROADCAST REQUESTED Severe Thunderstorm Warning National Weather Service Pocatello ID 1005 PM MDT Thu Sep 17 2026 The National Weather Service in Pocatello has issued a * Severe Thunderstorm Warning for... Northwestern Oneida County in southeastern Idaho... Central Bannock County in southeastern Idaho... Southeastern Power County in southeastern Idaho... Southwestern Bingham County in southeastern Idaho... * Until 1045 PM MDT. * At 1004 PM MDT, a severe thunderstorm was located near Fort Hall Bannock Peak, or 16 miles southeast of Neeley, moving northeast at 25 mph. HAZARD...Half dollar size hail. SOURCE...Radar indicated. IMPACT...Damage to vehicles is expected. * Locations impacted include... American Falls, western American Falls Reservoir, Rockland, Fort Hall Bannock Peak, Pauline, and Mink Creek Pass. PRECAUTIONARY/PREPAREDNESS ACTIONS... For your protection move to an interior room on the lowest floor of a building. && LAT...LON 4241 11266 4247 11299 4287 11282 4265 11235 TIME...MOT...LOC 0404Z 226DEG 49KT 4259 11265 HAIL THREAT...RADAR INDICATED MAX HAIL SIZE...1.25 IN WIND THREAT...RADAR INDICATED MAX WIND GUST...<50 MPH $$ GK  470 FZUS71 KLWX 180406 MWSLWX Marine Weather Statement National Weather Service Baltimore MD/Washington DC 1206 AM EDT Fri Sep 18 2026 ANZ536-180500- 1206 AM EDT Fri Sep 18 2026 ...A STRONG THUNDERSTORM APPROACHING THE WATERS... The areas affected include... Tidal Potomac from Indian Head to Cobb Island MD... At 1206 AM EDT, Doppler radar indicated a strong thunderstorm, capable of producing winds to around 30 knots. This thunderstorm was located near Port Tobacco River, moving southeast at 15 knots. PRECAUTIONARY/PREPAREDNESS ACTIONS... Mariners can expect gusty winds to around 30 knots, locally higher waves, and lightning strikes. Boaters should seek safe harbor immediately until this storm passes. && LAT...LON 3846 7701 3835 7696 3828 7686 3821 7694 3823 7696 3826 7696 3828 7698 3827 7699 3827 7700 3829 7701 3830 7703 3832 7703 3838 7706 3833 7717 3839 7722 $$ KJP  783 WWUS55 KPIH 180406 SVSPIH Severe Weather Statement National Weather Service Pocatello ID 1006 PM MDT Thu Sep 17 2026 IDC011-180416- /O.EXP.KPIH.SV.W.0055.000000T0000Z-260918T0415Z/ Bingham ID- 1006 PM MDT Thu Sep 17 2026 ...THE SEVERE THUNDERSTORM WARNING FOR WEST CENTRAL BINGHAM COUNTY WILL EXPIRE AT 1015 PM MDT... The storm which prompted the warning has moved out of the area. Therefore, the warning will be allowed to expire. && LAT...LON 4341 11251 4323 11225 4304 11262 4317 11283 TIME...MOT...LOC 0406Z 227DEG 16KT 4324 11252 $$ GK  151 WHUS52 KKEY 180407 SMWKEY GMZ075-180430- /O.NEW.KKEY.MA.W.0276.260918T0407Z-260918T0430Z/ BULLETIN - IMMEDIATE BROADCAST REQUESTED Special Marine Warning National Weather Service Key West FL 1207 AM EDT Fri Sep 18 2026 The National Weather Service in Key West has issued a * Special Marine Warning for... Straits of Florida from Halfmoon Shoal to 20 nm west of Dry Tortugas out 60 nm... * Until 1230 AM EDT. * At 1207 AM EDT, a strong thunderstorm was located 32 nm south of Tortugas Ecological Reserve South, moving northwest at 10 knots. HAZARD...Wind gusts 34 knots or greater. SOURCE...National Weather Service Meteorologist. IMPACT...Expect wind gusts in excess of 34 knots, suddenly higher waves, frequent lightning, and heavy downpours. * The strong thunderstorm will remain over mainly open waters. PRECAUTIONARY/PREPAREDNESS ACTIONS... Prepare for wind gusts in excess of 34 knots, steep and fast-building seas, frequent lightning, and blinding downpours. Stay low or go below, and make sure all on board are wearing life jackets. Intense and continuous lightning is occurring with this storm. Stay low, or go below. Lower VHF antenna, outriggers, fishing rods, and umbrellas. && LAT...LON 2409 8314 2394 8290 2377 8302 2383 8324 2390 8325 TIME...MOT...LOC 0407Z 115DEG 10KT 2389 8305 HAIL...0.00IN WIND...>34KTS $$ MJV  437 WUUS55 KPIH 180411 SVRPIH IDC011-019-051-180500- /O.NEW.KPIH.SV.W.0057.260918T0411Z-260918T0500Z/ BULLETIN - IMMEDIATE BROADCAST REQUESTED Severe Thunderstorm Warning National Weather Service Pocatello ID 1011 PM MDT Thu Sep 17 2026 The National Weather Service in Pocatello has issued a * Severe Thunderstorm Warning for... South central Jefferson County in southeastern Idaho... Northwestern Bonneville County in southeastern Idaho... Central Bingham County in southeastern Idaho... * Until 1100 PM MDT. * At 1011 PM MDT, a severe thunderstorm was located near Rose, or 9 miles north of Blackfoot, moving northeast at 20 mph. HAZARD...Half dollar size hail. SOURCE...Radar indicated. IMPACT...Damage to vehicles is expected. * Locations impacted include... Idaho Falls, Ammon, Shelley, Iona, Firth, Rose, Basalt, Osgood, and Wapello. PRECAUTIONARY/PREPAREDNESS ACTIONS... For your protection move to an interior room on the lowest floor of a building. && LAT...LON 4321 11228 4334 11245 4368 11214 4347 11181 TIME...MOT...LOC 0411Z 226DEG 16KT 4333 11230 HAIL THREAT...RADAR INDICATED MAX HAIL SIZE...1.25 IN WIND THREAT...RADAR INDICATED MAX WIND GUST...<50 MPH $$ GK  128 FZUS72 KKEY 180421 MWSKEY Marine Weather Statement National Weather Service Key West FL 1221 AM EDT Fri Sep 18 2026 GMZ075-180431- /O.EXP.KKEY.MA.W.0276.000000T0000Z-260918T0430Z/ 1221 AM EDT Fri Sep 18 2026 ...THE SPECIAL MARINE WARNING WILL EXPIRE AT 1230 AM EDT... The affected areas were... Straits of Florida from Halfmoon Shoal to 20 nm west of Dry Tortugas out 60 nm... The thunderstorm has weakened and no longer poses a significant threat to boaters. && LAT...LON 2409 8314 2394 8290 2377 8302 2383 8324 2390 8325 TIME...MOT...LOC 0421Z 115DEG 10KT 2390 8308 $$ MJV  372 WGUS55 KPIH 180425 FFWPIH IDC051-065-180830- /O.NEW.KPIH.FF.W.0011.260918T0425Z-260918T0830Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ BULLETIN - EAS ACTIVATION REQUESTED Flash Flood Warning National Weather Service Pocatello ID 1025 PM MDT Thu Sep 17 2026 The National Weather Service in Pocatello has issued a * Flash Flood Warning for... The Big Rock burn scar in... Southeastern Jefferson County in southeastern Idaho... South Central Madison County in southeastern Idaho... * Until 230 AM MDT. * At 1025 PM MDT, Doppler radar indicated thunderstorms producing heavy rain over the Big Rock Burn Scar. Flash flooding is ongoing or expected to begin shortly. Excessive rainfall over the burn scar will result in debris flow moving through the Big Rock burn scar. The debris flow can consist of rock, mud, vegetation and other loose materials. HAZARD...Life threatening flash flooding. Thunderstorms producing flash flooding in and around the Big Rock Burn Scar. SOURCE...Radar indicated. IMPACT...Life threatening flash flooding of areas in and around the Big Rock Burn Scar. * Some locations that will experience flash flooding include... Heise. PRECAUTIONARY/PREPAREDNESS ACTIONS... This is a life threatening situation. Heavy rainfall will cause extensive and severe flash flooding of creeks...streams...and ditches in the Big Rock Burn Scar. Severe debris flows can also be anticipated across roads. Roads and driveways may be washed away in places. If you encounter flood waters...climb to safety. && LAT...LON 4366 11172 4367 11173 4368 11172 4366 11170 4366 11167 4367 11165 4365 11163 4364 11164 4364 11165 4363 11166 4363 11169 4364 11169 4365 11171 FLASH FLOOD...RADAR INDICATED FLASH FLOOD DAMAGE THREAT...CONSIDERABLE $$ GK  753 WWUS55 KPIH 180434 SVSPIH Severe Weather Statement National Weather Service Pocatello ID 1034 PM MDT Thu Sep 17 2026 IDC005-011-071-077-180444- /O.CAN.KPIH.SV.W.0056.000000T0000Z-260918T0445Z/ Oneida ID-Bannock ID-Power ID-Bingham ID- 1034 PM MDT Thu Sep 17 2026 ...THE SEVERE THUNDERSTORM WARNING FOR NORTHWESTERN ONEIDA...CENTRAL BANNOCK...SOUTHEASTERN POWER AND SOUTHWESTERN BINGHAM COUNTIES IS CANCELLED... The storm which prompted the warning has moved out of the area. Therefore, the warning has been cancelled. && LAT...LON 4241 11266 4247 11299 4287 11282 4265 11235 TIME...MOT...LOC 0423Z 226DEG 49KT 4288 11224 $$ GK  277 WUUS55 KPIH 180437 SVRPIH IDC005-011-029-077-180515- /O.NEW.KPIH.SV.W.0058.260918T0437Z-260918T0515Z/ BULLETIN - IMMEDIATE BROADCAST REQUESTED Severe Thunderstorm Warning National Weather Service Pocatello ID 1037 PM MDT Thu Sep 17 2026 The National Weather Service in Pocatello has issued a * Severe Thunderstorm Warning for... Northwestern Caribou County in southeastern Idaho... North central Bannock County in southeastern Idaho... Northeastern Power County in southeastern Idaho... South central Bingham County in southeastern Idaho... * Until 1115 PM MDT. * At 1037 PM MDT, a severe thunderstorm was located near Portneuf Gap, or 8 miles south of Pocatello, moving northeast at 30 mph. HAZARD...Quarter size hail. SOURCE...Radar indicated. IMPACT...Damage to vehicles is expected. * Locations impacted include... Pocatello, Chesterfield Reservoir, American Falls Reservoir, Chubbuck, Inkom, Fort Hall Buffalo Lodge, Portneuf Gap, Fort Hall Townsite, Fort Hall Mount Putnam, Fort Hall Bannock Creek Lodge, Pocatello Airport, Fort Hall Putnam Lodge, and Mink Creek Pass. PRECAUTIONARY/PREPAREDNESS ACTIONS... For your protection move to an interior room on the lowest floor of a building. Large hail, damaging wind, and continuous cloud to ground lightning are occurring with this storm. Move indoors immediately. Lightning is one of nature's leading killers. Remember, if you can hear thunder, you are close enough to be struck by lightning. Torrential rainfall is occurring with this storm, and may lead to flash flooding. Do not drive your vehicle through flooded roadways. && LAT...LON 4256 11240 4284 11282 4319 11224 4290 11186 TIME...MOT...LOC 0437Z 225DEG 49KT 4275 11244 HAIL THREAT...RADAR INDICATED MAX HAIL SIZE...1.00 IN WIND THREAT...RADAR INDICATED MAX WIND GUST...<50 MPH $$ GK  974 WWUS55 KPIH 180447 SVSPIH Severe Weather Statement National Weather Service Pocatello ID 1047 PM MDT Thu Sep 17 2026 IDC011-019-051-180457- /O.CAN.KPIH.SV.W.0057.000000T0000Z-260918T0500Z/ Jefferson ID-Bonneville ID-Bingham ID- 1047 PM MDT Thu Sep 17 2026 ...THE SEVERE THUNDERSTORM WARNING FOR SOUTH CENTRAL JEFFERSON... NORTHWESTERN BONNEVILLE AND CENTRAL BINGHAM COUNTIES IS CANCELLED... The storm which prompted the warning has weakened below severe limits, and no longer poses an immediate threat to life or property. Therefore, the warning has been cancelled. However, small hail and heavy rain are still possible with this thunderstorm. && LAT...LON 4321 11228 4334 11245 4368 11214 4347 11181 TIME...MOT...LOC 0436Z 226DEG 16KT 4344 11214 $$ GK