Damaging winds in Georgetown and Montpelier.
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 PIH wrote it up.
Damaging winds in Georgetown and Montpelier.
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 Pocatello, ID wrote its last area forecast discussion before the first event at Sep 4, 2:29 PM MST, 2 hours 41 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE POCATELLO ID 329 PM MDT TUE SEP 4 2007 .DISCUSSION...CLOSED UPPER LOW ALREADY AFFECTING EASTERN IDAHO. THE WETTEST AIRMASS OF SOME TIME PARKED OVER THE EASTERN HALF OF THE AREA WITH THETA-E VALUES APPROACHING 350 IN PLACES. CONVECTION ALREADY ONGOING WITH STRONGEST CELLS ALONG SOUTHERN BORDER. MAIN THREAT APPEARS TO BE WINDS AND HAIL...BUT HEAVY RAINFALL ALSO A THREAT OVERNIGHT SO ISSUED A FLASH FLOOD WATCH FOR EASTERN HIGHLANDS ALONG WYOMING BORDER STARTING AT MIDNIGHT. WITH PW VALUES APPROACHING 1.5 INCHES ON GOES SOUNDER...FEEL CONFIDENT IN AT LEAST HEAVY RAIN WORDING. FIRST WEAK SFC COLD FRONT ALREADY THROUGH BUT SECOND AND MORE POTENT FRONT STILL ON TARGET TO PASS THROUGH FCST AREA THIS EVENING AS UPPER LOW SWINGS TOWARD ID/OR/NV BORDER OVERNIGHT. THIS IS SLIGHTLY SLOWER THAN PREVIOUS RUNS. UPPER JET REMAINS ACROSS AREA...WITH STRONG DYNAMICS CONTINUING INTO WEDNESDAY. CONCERN SHIFTS BACK TO THE CENTRAL MTNS WHERE DEFORMATION ZONE BEHIND AXIS OF UPPER LOW HELPS TO REFOCUS PRECIPITATION. DYNAMICS NOT AS IMPRESSIVE...BUT QPF AMOUNTS ARE. WITH ACTIVE FIRES AND RECENT BURN SCARS OVER THE AREA...FLASH FLOOD WATCH MAY BE NEEDED FOR WEDNESDAY ACROSS CENTRAL MTNS. AS AXIS OF UPPER LOW SHIFTS INTO WYOMING WED NIGHT...DEFORMATION ZONE FOLLOW IT...BRINGING RENEWED THREAT OF HEAVY PRECIP TO UPPER SNAKE HIGHLANDS. UPPER LOW LFTS NORTHEAST ON THU INTO THE NORTHERN PLAINS...FINALLY BRINGING AN END TO PRECIP ACROSS FCST AREA. MODEL RUNNING QPF AMOUNTS THROUGH THAT TIME EXCEED 2 INCHES IN PLACES. NORTHWEST FLOW RIDGE SETS IN ACROSS REGION...MAINTAINING COOL BUT DRY FLOW ACROSS THE FCST AREA. TEMPS DO NOT LOOK TO RECOVER SIGNIFICANTLY OVER THE WEEKEND...ESPECIALLY WITH REINFORCING COOL TROUGH FCST TO ARRIVE FRI NIGHT AND SAT. WITH SOURCE REGION OVER LAND LITTLE PRECIP EXPECTED. THIS WAVE REINFORCES DEEP TROUGH OVER CENTRAL US...BUT MODELS HAVING A DIFFICULT TIME RESOLVING JUST HOW DEEP. BY MON...OPERATIONAL GFS DEVELOPS CLOSED LOW OVER WASHINGTON STATE THAT MORE CLOSELY RESEMBLES A LATE WINTER SYSTEM FOR THIS REGION. THIS IDEA HAS LITTLE SUPPORT FOR ENSEMBLES OR ECMWF HOWEVER. AS A RESULT OF THE UNCERTAINTY PAST THE WEEKEND AND THE ONGOING SHORT TERM CONCERNS...MADE NO CHANGES PAST FRI. DMH && .AVIATION...SCTD TSTMS WILL SPREAD ACRS MOST OF SOUTHEAST IDAHO THIS AFTN/EVE. SOME OF THESE STORMS MAY CONTAIN HAIL AND STRONG SFC WIND GUSTS...ESPECIALLY OVER THE SRN HIGHLANDS. TSTMS WILL DIMINISH IN INTENSITY LATER THIS EVENING. SHOWERS AND A FEW TSTMS WILL BE POSSIBLE AGAIN THU AS AN UPPER CLOSED LOW MOVES OVERHEAD. OVERALL CONDITIONS SHOULD REMAIN VFR...EXCEPT FOR BRIEF MVFR VIS IN TSTMS. HEDGES && .FIRE WEATHER...AN UPPER CLOSED LOW WILL MOVE OVER IDAHO ON WEDNESDAY. SCATTERED SHOWERS AND THUNDERSTORMS WILL MOVE THROUGH MOST AREAS THROUGH THIS EVENING. THERE IS PLENTY OF MOISTURE WITH THIS SYSTEM...SO THUNDERSTORMS WILL PRODUCE WETTING RAIN. GUSTY WINDS ARE POSSIBLE WITH THUNDERSTORMS...ESPECIALLY ACROSS THE SOUTHERN HIGHLANDS THROUGH THIS EVENING. MORE RAIN AND THUNDERSTORMS WILL DEVELOP BENEATH THE UPPER LOW ON WEDNESDAY...WITH WETTING RAIN IN MANY AREAS. RAINFALL AMOUNTS MAY BE SUFFICIENT TO PRODUCE FLASH FLOODING AND DEBRIS FLOWS IN BURNED AREAS. TEMPS WILL REMAIN ON THE COOL SIDE FOR THE NEXT COUPLE OF DAYS...WITH SUBSTANTIALLY HIGHER HUMIDITY READINGS. HEDGES && .PIH WATCHES/WARNINGS/ADVISORIES... FLASH FLOOD WATCH FROM MIDNIGHT MDT TONIGHT THROUGH WEDNESDAY MORNING FOR IDZ019-023>025. &&
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE POCATELLO ID 330 PM MDT TUE SEP 4 2007 IDZ017>025-031-032-052130- EASTERN MAGIC VALLEY-SAWTOOTH MOUNTAINS-UPPER SNAKE HIGHLANDS- UPPER SNAKE RIVER PLAIN-LOWER SNAKE RIVER PLAIN- SOUTH CENTRAL HIGHLANDS-CARIBOU HIGHLANDS- CACHE VALLEY/IDAHO PORTION-WASATCH MOUNTAINS/IDAHO PORTION- BIG AND LITTLE WOOD RIVER REGION-LOST RIVER/PAHSIMEROI- 330 PM MDT TUE SEP 4 2007 THIS HAZARDOUS WEATHER OUTLOOK IS FOR EASTERN IDAHO. .DAY ONE...THIS AFTERNOON AND TONIGHT THERE IS A CHANCE OF SEVERE WEATHER OVER PORTIONS OF EASTERN IDAHO TONIGHT. AREAS ALONG THE UTAH BORDER MAY SEE VERY STRONG STORMS DEVELOP THROUGH THIS EVENING. THESE STORMS MAY PRODUCE DAMAGING WINDS AND LARGE HAIL. OTHER STORMS ACROSS THE REGION MAY PRODUCE LOCALLY HEAVY RAINFALL...AND A THREAT OF FLASH FLOODING EXISTS ALONG THE WYOMING BORDER AFTER MIDNIGHT. .DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY STORMS WITH HEAVY RAINFALL ARE FORECAST TO CONTINUE ACROSS EASTERN IDAHO THROUGH WEDNESDAY NIGHT. HEAVY RAINFALL IS POSSIBLE...AND CONDITIONS WILL BE MONITORED FOR FLASH FLOODING. THE PRECIPITATION SHOULD END BY LATE THURSDAY ACROSS ALL OF EASTERN IDAHO...WITH COOL AND DRY CONDITIONS EXPECTED FOR THE REMAINDER OF THE FORECAST PERIOD. .SPOTTER INFORMATION STATEMENT... WE ASK TRAINED SPOTTERS AND CITIZENS TO REPORT SIGNIFICANT WEATHER CONDITIONS WHEN IT IS SAFE TO DO SO. THESE CONDITIONS MAY INCLUDE HAIL...TORNADOES...STRONG WIND...DUST STORMS...SNOWFALL... EXTREME COLD TEMPERATURES...FREEZING RAIN OR HEAVY RAIN...DENSE FOG...AND FLOODING OR ICE JAMS. INFORMATION ABOUT THESE HAZARDOUS CONDITIONS SHOULD BE CALLED INTO YOUR NATIONAL WEATHER SERVICE OFFICE IN POCATELLO USING THE 1-800 SEVERE WEATHER HOTLINE...OR 208-233-0834.
The Pocatello radar (KSFX), 143 km away, was scanning. The volume nearest the first event began at 00:09 UTC.
2 thunderstorm wind. Local standard time, as filed.
Trees reported down in Montpelier on Eastshore Road and Highway 89 with carport roof blown off as well in the town.
Spotter reported a measured wind gust of 68 mph from a thunderstorm in Georgetown.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Idaho in 2007Every state in 2007This day in weather historyWarnings in Idaho, September 2007
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: 61261, 61262.