Wind damage was reported by Law Enforcement in Lemhi County, ID from thunderstorm winds.
Every event with a place to put it. Tap one for its entry below.
Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.
The episode as NWS MSO wrote it up.
Wind damage was reported by Law Enforcement in Lemhi County, ID from thunderstorm winds.
The local office's own words before the first event, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Missoula, MT wrote its last area forecast discussion before the first event at May 31, 1:41 PM MST, 1 hour 38 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE MISSOULA MT 241 PM MDT SAT MAY 31 2008 .DISCUSSION...SHOWERS/THUNDERSTORM ACTIVITY WILL BE DEVELOPING THROUGH THE REMAINDER OF THE AFTERNOON. AN ORGANIZED LINE OF THUNDERSTORMS HAS BEEN MOVING THROUGH NORTHEAST OREGON AND WILL LIKELY IMPACT WESTERN PORTIONS OF IDAHO COUNTY AND POSSIBLY CLEARWATER COUNTY OF NORTH-CENTRAL IDAHO THIS EVENING/TONIGHT. MODELS HAVE IDENTIFIED A MID-LEVEL CIRCULATION ASSOCIATED WITH THIS ENHANCED CONVECTION BUT DIFFER ON THE EXACT PLACEMENT AND NORTHWARD TRACK. PRECIPITABLE WATER VALUES OF 0.75-1.00 INCHES SUGGEST THE POTENTIAL FOR BRIEF...BUT HEAVY RAINFALL WITH SOME SHOWERS AND THUNDERSTORMS. THUNDERSTORMS ARE EXPECTED TO DIMINISH LATER THIS EVENING...WITH THE EXCEPTION OF ENHANCED FORCING NEAR THE PREVIOUSLY MENTIONED WEATHER FEATURE ALONG THE IDAHO PANHANDLE. SUNDAY AND SUNDAY NIGHT...AN UPPER LOW PRESSURE SYSTEM WILL BE MOVING INTO THE PACIFIC NORTHWEST. THE AIR MASS WILL BE MOIST AND UNSTABLE AND EXPECTED ADDITIONAL SHOWERS AND LATE DAY THUNDER. THE BEST INSTABILITY WILL EXTEND ACROSS IDAHO COUNTY AND WEST- CENTRAL MONTANA...BUT THE POTENTIAL FOR THUNDER WILL EXIST ACROSS THE ENTIRE AREA. MONDAY...THE UPPER LOW WILL SLOWLY MIGRATE EAST OVER NORTHERN IDAHO...MAINTAINING THE MOIST UNSTABLE ENVIRONMENT. SHOWERS AND THUNDERSTORMS WILL REMAIN IN THE FORECAST...WITH THE FOCUS A BETTER CONVECTION DURING THE AFTERNOON. MODELS SUGGEST BETTER INSTABILITY AND QG FORCING ACROSS SOUTHWEST MONTANA...LEMHI AND IDAHO COUNTIES OF NORTH CENTRAL IDAHO FOR POTENTIALLY HEAVY RAINFALL WITH CONVECTION. THE IDAHO PANHANDLE AREA SHOULD SEE TEMPERATURES TUMBLE A FEW DEGREES IN RESPONSE TO THE UPPER LOW MOVING OVERHEAD. TUESDAY THROUGH THURSDAY THE NORTHERN ROCKIES WILL BE UNDER A PROGRESSIVE WEST/NORTHWESTERLY FLOW ALOFT. ON TUESDAY THE AREA WILL BE IN BETWEEN WEATHER SYSTEMS PROVIDING A BRIEF BREAK IN THE PRECIPITATION AND PERSISTENT CLOUD COVER. HOWEVER BY WEDNESDAY MORNING MODEL CONSENSUS (12Z ECMWF/GFS/CANADIAN) SUGGEST AN UPPER LEVEL TROUGH WILL MOVE THROUGH THE REGION RESULTING IN WIDESPREAD SHOWERS. A FEW LIGHTNING STRIKES MAY BE POSSIBLE UNDER THIS PATTERN BUT CHOOSE TO LEAVE THEM OUT OF THE FORECAST SINCE MODEL CONVECTIVE PARAMETERS AND PROFILES ARE NOT OVERLY FAVORABLE FOR WIDESPREAD THUNDERSTORMS WEDNESDAY. ON THURSDAY FORECAST MODELS DIG THIS TROUGH INTO THE MIDWESTERN STATES WITH CONDITIONS GRADUALLY IMPROVING ACROSS CENTRAL IDAHO DURING THE DAY AND WESTERN MONTANA BY LATE THURSDAY AFTERNOON. HOWEVER PAST RUNS OF THESE MODELS HAVE SHOWN LITTLE CONSISTENCY WITH THE TRACK AND STRENGTH OF THIS FEATURE SO HAVE ONLY A MODERATE DEGREE OF CONFIDENCE IN THIS SCENARIO. TEMPERATURES TUESDAY THROUGH THURSDAY WILL GENERALLY BE NEAR SEASONAL NORMS. THURSDAY NIGHT THROUGH SATURDAY NIGHT...THE GFS AND ECMWF ARE IN SOME DISAGREEMENT THROUGH THE FAR EXTENDED FORECAST. BOTH MODELS ARE SHOWING A BROAD PACIFIC TROUGH MOVE OVER THE REGION...BUT TIMING AND STRENGTH ARE A BIT OFF. THUS DID NOT TO MAKE TOO MANY CHANGES DUE TO THE MODEL UNCERTAINTY. HOWEVER...BROUGHT POPS ABOVE CLIMATOLOGY FRIDAY NIGHT AND SATURDAY AND LOWERED SATURDAYS HIGH TEMPERATURES GIVEN THE EXPECTED PROGRESSIVE TROUGH PATTERN SITUATED OVER THE AREA. && .AVIATION...SHOWERS AND THUNDERSTORMS HAVE ALREADY DEVELOPED ACROSS THE INTER-MOUNTAIN WEST AND ARE EXPECTED TO MOVE INTO NORTH CENTRAL IDAHO...WEST CENTRAL AND SOUTHWEST MONTANA LATER THIS AFTERNOON AND EVENING. MOUNTAINS ARE EXPECTED TO BE PARTIALLY OBSCURED AS CONVECTIVE STORMS PASS THROUGH. KSMN...KMSO AND KBTM AIRFIELDS ARE THE MOST LIKELY AREAS TO BE IMPACTED. SCATTERED SHOWERS WILL CONTINUE AFTER SUNSET. ON SUNDAY AN UPPER LEVEL TROUGH WILL MOVE ONTO THE WASHINGTON COAST CAUSING WIDESPREAD PRECIPITATION BEGINNING DURING THE AFTERNOON. LOWERED CEILINGS AND REDUCED VISIBILITY CAN BE EXPECTED AT TIMES. && .MSO WATCHES/WARNINGS/ADVISORIES... MT...NONE. ID...NONE. && SHORT TERM...MSJ LONG TERM....DICKERSON/FOSTER AVIATION...FOSTER
The Pocatello radar (KSFX), 224 km away, was scanning. The volume nearest the first event began at 22:17 UTC.
1 thunderstorm wind. Local standard time, as filed.
Law Enforcement and a weather spotter reported that a roof blew off a trailer house and several large tree branches were down on Highway 93 in southern Lemhi County.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Idaho in 2008Every state in 2008This day in weather historyWarnings in Idaho, May 2008
NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-09-24. Each event’s entry at NCEI: 95924.