A thunderstorm downed trees onto power lines and 3 thousand people lost power in the Chubbuck area. Several branches blown off trees and a small fire started due to a transformer blowing out.
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.
A thunderstorm downed trees onto power lines and 3 thousand people lost power in the Chubbuck area. Several branches blown off trees and a small fire started due to a transformer blowing out. Some minor damage to houses as well occurred.
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 Aug 10, 1:03 PM MST, 1 hour 27 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE POCATELLO ID 203 PM MDT FRI AUG 10 2012 .DISCUSSION... BATCH OF MOISTURE AHEAD OF A COLD FRONT CONTINUES TO PERSIST OVER THE AREA. EXPECT GOOD CHANCES FOR SHOWERS AND THUNDERSTORMS...EVEN OVER EASTERN PORTIONS THROUGH THIS EVENING GIVEN THE CONSISTENCY BETWEEN THE NAM/GFS. EXPECT RAIN CHANCES TO PERSIST OVERNIGHT UNTIL THE FRONT PASSES THROUGH ON SATURDAY MORNING. WEEKEND LOOKS DRY AND A TOUCH COOLER...TALKING LOW TO MID 90S VERSES 100. SO ABOVE NORMAL TEMPS ARE STILL EXPECTED. EXPECT MOISTURE TO RETURN FOR MONDAY AND TUESDAY...MOST LIKELY IN THE FORM OF ISOLATED THUNDERSTORMS. EXPECT A COLD FRONT TO ARRIVE ON TUESDAY. MODELS HAVE BEEN VERY INCONSISTENT WITH THE STRENGTH OF THIS FRONT. TRENDED TEMPS DOWN ABOUT FIVE DEGREES FROM TUESDAY HIGHS FOR THE REMAINDER OF NEXT WEEK AND KEPT IN A SLIGHT CHANCE FOR THUNDERSTORMS OVER THE MOUNTAINS AND HIGHLANDS GIVEN THE INCONSISTENCY IN THE MODELS AT THAT TIME. VALLE && .AVIATION...LOOK FOR THUNDERSTORM ACTIVITY THIS AFTERNOON INTO EARLY EVENING ACROSS THE AREA IMPACTING ALL TAF SITES DUE TO SUB-TROPICAL MOISTURE AND INSTABILITY AHEAD OF A PACIFIC TROUGH. WIND GUSTS UP TO 50 MPH WILL BE POSSIBLE IN AND AROUND THUNDERSTORMS. LOOK FOR DRYING AND CLEARING OVERNIGHT. WYATT && .FIRE WEATHER...LOOK FOR WIDELY SCATTERED TO SCATTERED THUNDERSTORM ACTIVITY ACCOMPANIED WITH GUSTY OUTFLOW WINDS UP TO 50 MPH THIS AFTERNOON INTO EARLY EVENING DUE TO SUB-TROPICAL MOISTURE AND INSTABILITY AHEAD OF A PACIFIC TROUGH OVER OREGON. A RED FLAG WARNING IS IN EFFECT UNTIL 9 PM MDT FOR ALL EASTERN IDAHO FIRE ZONES. LOOK FOR LINGERING PRECIPITATION INTO SATURDAY MORNING UNTIL RELATIVELY DRY FLOW MOVES INTO THE AREA. LOOK FOR SLIGHTLY COOLER TEMPERATURES TODAY AND SATURDAY UNTIL TEMPERATURES START TO WARM BACK UP BY SUNDAY. MODELS CONTINUE TO STRUGGLE WITH THE WEATHER PATTERN EARLY NEXT WEEK. MODELS ARE SHOWING MOISTURE TO OUR SOUTH MONDAY THROUGH WEDNESDAY BUT VARY FROM RUN TO RUN WITH THE AMOUNT OF MOISTURE THAT MAKES IT NORTH INTO OUR AREA. ADDITIONALLY...MODELS ARE STRUGGLING WITH THE DEPTH AND TIMING OF THE NEXT TROUGH MOVING OVER OUR AREA TUESDAY/WEDNESDAY. EXPECT SLIGHTLY COOLER TEMPERATURES AND BREEZY WINDS TUESDAY AND WEDNESDAY. RIDGING BUILDS BACK IN LATE THURSDAY INTO FRIDAY BRINGING BACK WARMER TEMPERATURES...DRIER CONDITIONS AND LIGHTER WINDS. WYATT && .PIH WATCHES/WARNINGS/ADVISORIES... RED FLAG WARNING UNTIL 9 PM MDT THIS EVENING IDZ409>413-475>477. &&
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE POCATELLO ID 346 AM MDT FRI AUG 10 2012 IDZ017>025-031-032-111000- 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- 346 AM MDT FRI AUG 10 2012 THIS HAZARDOUS WEATHER OUTLOOK IS FOR EASTERN IDAHO. .DAY ONE...TODAY AND TONIGHT EXPECT SCATTERED THUNDERSTORMS WITH POSSIBLE BRIEF HEAVY RAINFALL AND GUSTY WINDS. RED FLAG WARNINGS ARE IN EFFECT FOR THE ENTIRE REGION. .DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY ISOLATED MAINLY MOUNTAIN THUNDERSTORMS ARE POSSIBLE. .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.
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE POCATELLO
308 PM MDT FRI AUG 10 2012
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0300 PM TSTM WND GST 8 W AMERICAN FALLS 42.79N 113.01W
08/10/2012 M55 MPH POWER ID TRAINED SPOTTER
WITH HEAVY RAIN
0300 PM TSTM WND GST SSE AMERICAN FALLS 42.78N 112.85W
08/10/2012 M51 MPH POWER ID TRAINED SPOTTER
25 MPH GUSTING TO 50+ MPH - HEAVY RAIN
&&
PANGELSPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE POCATELLO ID
324 PM MDT FRI AUG 10 2012
IDZ019-023-102215-
TETON ID-BONNEVILLE ID-
324 PM MDT FRI AUG 10 2012
THE NATIONAL WEATHER SERVICE IN POCATELLO HAS ISSUED A
SIGNIFICANT WEATHER ADVISORY FOR...
NORTHEASTERN BONNEVILLE COUNTY IN SOUTHEAST IDAHO
SOUTHEASTERN TETON COUNTY IN SOUTHEAST IDAHO
UNTIL 415 PM MDT
AT 322 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM NEAR VICTOR..MOVING NORTHEAST AT 20 MPH.
WIND GUSTS UP TO 50 MPH ARE EXPECTED WITH THIS STORM...ALONG WITH
HEAVY RAIN.
LOCATIONS IMPACTED INCLUDE...
VICTOR...
DRIGGS...
LAT...LON 4335 11126 4347 11145 4379 11105 4375 11103
4350 11103
TIME...MOT...LOC 2124Z 224DEG 19KT 4355 11114
RSThe Pocatello radar (KSFX), 28 km away, was scanning. The volume nearest the first event began at 21:32 UTC.
1 thunderstorm wind. Local standard time, as filed.
A thunderstorm downed trees onto power lines and 3 thousand people lost power in the Chubbuck area. Several branches blown off trees and a small fire started due to a transformer blowing out. Some minor damage to houses as well occurred.
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, August 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: 411097.