On September 10th winds downed a power line in Egin and 4,300 Fremont County residents lost power for about 4 hours from 3 pm EDT to about 7 pm EDT.
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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.
On September 10th winds downed a power line in Egin and 4,300 Fremont County residents lost power for about 4 hours from 3 pm EDT to about 7 pm EDT.
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 10, 1:11 PM MST, 49 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE POCATELLO ID 211 PM MDT MON SEP 10 2012 .SHORT TERM...TONIGHT THROUGH WEDNESDAY. BREEZY CONDITIONS ACROSS THE SNAKE PLAIN TODAY WILL GRADUALLY TAPER OFF AFTER SUNSET. CONVECTIVE ACTIVITY IN SOUTHEAST CORNER WILL ALSO END BETWEEN 6 AND 10 PM. STRONG WESTERLY FLOW ALOFT WILL BEGIN TO TAPER OFF TUESDAY BUT ENOUGH MIXING TO ENSURE WINDS AGAIN PICK UP MAINLY IN SNAKE PLAIN IN THE AFTERNOON TO THE 10 TO 20 MPH RANGE. FLOW ALOFT TURNS NORTHWESTERLY WEDNESDAY. WILL HAVE CLEAR SKIES ACROSS THE BOARDS FROM LATE TONIGHT THROUGH WEDNESDAY WITH NO PRECIPITATION ANYWHERE ONCE THE CONVECTION CLEARS THE SOUTHEAST CORNER THIS EVENING. GK .LONG TERM...THURSDAY THROUGH MONDAY. GFS MOVES UPPER LEVEL RIDGE OVERHEAD THURSDAY THEN SOUTHWEST TO WEST FLOW THROUGH SATURDAY. IT DOES BRING IN A WEAK TROF SATURDAY AND THAT IS THE ONLY DAY WITH ANY CHANCE OF PRECIPITATION. VERY DRY FOR THE MOST PART AND KEPT POPS BELOW WORDING OF PRECIPITATION IN GRIDS. GO BACK TO DRY NORTHWEST FLOW SUNDAY INTO MONDAY. THE EUROPEAN IS IN GOOD AGREEMENT NOW WITH THE GFS IN THE LONG TERM PERIOD WITH THE RIDGING LATE WEEK TURNING TO NORTHWEST FLOW BY SUNDAY INTO MONDAY. OVERALL DRY WITH ABOVE NORMAL TEMPERATURES EXPECTED WITH SOME SLIGHT COOLING TOWARD THE END OF THE PERIOD. GK && .AVIATION...A WEAK FRONTAL BOUNDARY HAS MOSTLY PASSED THROUGH OUR AREA. EXPECT MODERATE WINDS ACROSS THE AREA AND ISOLATED SHOWERS AND THUNDERSTORMS ACROSS FRANKLIN AND BEAR LAKE COUNTIES ALONG OUR SOUTHEAST BORDERS THIS AFTERNOON INTO EARLY EVENING. WYATT && .FIRE WEATHER...THIS AFTERNOON INTO EARLY EVENING LOOK FOR MODERATE WINDS WITH GUSTS AROUND 25 MPH ACROSS MOUNTAIN TOPS AND 30 MPH ACROSS THE SNAKE RIVER PLAIN BEHIND A WEAK FRONTAL BOUNDARY PASSING THROUGH THE AREA. THUS...THE RED FLAG WARNINGS ARE CONTINUED FOR ALL FIRE ZONES UNTIL EARLY THIS EVENING. LOOK FOR AFTERNOON ISOLATED SHOWERS AND THUNDERSTORMS ACROSS OUR SOUTHEAST BORDERS OF ZONE 413. RIDGING STARTS BUILDING INTO THE AREA TUESDAY AND WEDNESDAY. TUESDAY LOOK FOR WEST NORTHWEST FLOW ACROSS THE AREA BEFORE THE FLOW TURNS NORTH TO NORTHWEST BY WEDNESDAY AS A WEAK TROUGH PASSES OVER EASTERN MONTANA. EXPECT THE RETURN OF SOUTHWEST FLOW BY FRIDAY WITH A WEAK AND MOSTLY DRY TROUGH PASSING THROUGH OVER THE WEEKEND. WYATT && .PIH WATCHES/WARNINGS/ADVISORIES... LAKE WIND ADVISORY UNTIL 9 PM MDT THIS EVENING IDZ021. RED FLAG WARNING UNTIL 9 PM MDT THIS EVENING IDZ409>413-475>477. &&
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE POCATELLO ID 337 AM MDT MON SEP 10 2012 IDZ017>025-031-032-110945- 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- 337 AM MDT MON SEP 10 2012 THIS HAZARDOUS WEATHER OUTLOOK IS FOR EASTERN IDAHO. .DAY ONE...TODAY AND TONIGHT STRONG SURFACE WINDS ARE FORECAST TODAY ACROSS ALL OF EASTERN IDAHO. A RED FLAG WARNING HAS BEEN POSTED FOR ALL OF EASTERN IDAHO AS GUSTS OF 25-40 MPH LIKELY ALONG WITH LOW HUMIDITY THIS AFTERNOON AND EVENING. A LAKE WIND ADVISORY IS ALSO IN EFFECT FOR AMERICAN FALLS RESERVOIR FROM 9AM TO 9PM. WE WILL ALSO SEE SHOWERS AND ISOLATED STORMS ACROSS PORTIONS OF THE SOUTHERN AND EASTERN MOUNTAINS THROUGH THIS EVENING...PRODUCING LIGHT RAINFALL AND GUSTY WINDS. THE THREAT OF SEVERE WEATHER IS MINIMAL. .DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY COOL AND DRY WEATHER IS EXPECTED THROUGH MIDWEEK. TEMPERATURES WILL BE RUNNING 10 OR MORE DEGREES COOLER THAN AVERAGE. .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), 115 km away, was scanning. The volume nearest the first event began at 21:00 UTC.
1 thunderstorm wind. Local standard time, as filed.
On September 10th winds downed a power line in Egin and 4,300 Fremont County residents lost power for about 4 hours from 3 pm EDT to about 7 pm EDT.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Idaho in 2012Every state in 2012This day in weather historyWarnings in Idaho, September 2012
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: 414468.