Lightning caused a fire in northeastern Bannock County on the Fort Hall Indian Reservation. The fire began at about 1 pm MDT on August 20th and burned about 600 acres.
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.
Lightning caused a fire in northeastern Bannock County on the Fort Hall Indian Reservation. The fire began at about 1 pm MDT on August 20th and burned about 600 acres. 2 and a half mile road was closed for fire crews and some homes on the road were threatened but were never needed to be evacuated.
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 20, 2:25 AM MST, 9 hours 35 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE POCATELLO ID 325 AM MDT SAT AUG 20 2011 .DISCUSSION...UPPER LEVEL RIDGING WILL CONTINUE TO BE THE DOMINATE PATTERN THROUGH THE PERIOD. AN UPPER LEVEL LOW OVER NORTHERN CALIFORNIA WILL HELP PUSH MOISTURE ACROSS OUR AREA TODAY. LOOK FOR ISOLATED SHOWERS AND THUNDERSTORMS THIS AFTERNOON INTO THE EVENING ACROSS THE AREA. LOOK FOR THUNDERSTORMS AGAIN ON SUNDAY AFTERNOON MAINLY OVER THE UPPER SNAKE HIGHLANDS AND EASTERN HIGHLANDS. RIDGING STARTS TO GRADUALLY BUILD IN EVEN STRONGER STARTING ON MONDAY AND GOING THROUGH THURSDAY. LOOK FOR TEMPERATURES 3 TO 5 DEGREES ABOVE AVERAGE EARLY IN THE WEEK BECOMING 5 TO 8 DEGREES ABOVE AVERAGE BY THURSDAY. MODELS CONTINUE TO SHOW A SYSTEM COMING THROUGH ON THURSDAY. HAVE CONTINUED POPS SLIGHTLY ABOVE CLIMO FOR THURSDAY. WYATT && .AVIATION...VFR CONDITIONS WILL CONTINUE THROUGH THE WEEKEND DESPITE THE ARRIVAL OF SOME MOISTURE. ISOLATED STORMS ARE POSSIBLE OVER HIGHER ELEVATIONS THROUGH SUNDAY. KEYES/VALLE && .FIRE WEATHER...LIMITED MONSOON MOISTURE WILL STREAM ACROSS EASTERN IDAHO THROUGH THE WEEKEND. ISOLATED TO WIDELY SCATTERED STORMS ARE EXPECTED OVER HIGHER ELEVATIONS BOTH DAYS WITH THE MAJORITY OF THEM FALLING INTO THE DRY CATEGORY. COVERAGE FOR RED FLAG CONDITIONS ACROSS THE MAGIC VALLEY AND SOUTHERN HIGHLANDS IS MARGINAL...RIGHT AT OR SLIGHTLY ABOVE 15 PERCENT. OTHERWISE...LOW HUMIDITIES WILL CONTINUE ALTHOUGH THEY WILL BE SLIGHTLY HIGHER THAN DAYS PAST. KEYES/VALLE && .PIH WATCHES/WARNINGS/ADVISORIES... RED FLAG WARNING FROM 3 PM THIS AFTERNOON TO MIDNIGHT MDT TONIGHT IDZ409-412. &&
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE POCATELLO ID 411 AM MDT SAT AUG 20 2011 IDZ017-022-211015- EASTERN MAGIC VALLEY-SOUTH CENTRAL HIGHLANDS- 411 AM MDT SAT AUG 20 2011 THIS HAZARDOUS WEATHER OUTLOOK IS FOR EASTERN IDAHO. .DAY ONE...TODAY AND TONIGHT. RED FLAG WARNING IS IN EFFECT THIS AFTERNOON INTO EARLY EVENING FOR THUNDERSTORMS AND GUSTY OUTFLOW WINDS FOR SOUTHEAST IDAHO FIRE ZONES 409 AND 412. .DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY. THE PROBABILITY FOR WIDESPREAD HAZARDOUS WEATHER IS LOW. .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. IDZ018>021-023>025-031-032-211015- SAWTOOTH MOUNTAINS-UPPER SNAKE HIGHLANDS-UPPER SNAKE RIVER PLAIN- LOWER SNAKE RIVER PLAIN-CARIBOU HIGHLANDS- CACHE VALLEY/IDAHO PORTION-WASATCH MOUNTAINS/IDAHO PORTION- BIG AND LITTLE WOOD RIVER REGION-LOST RIVER/PAHSIMEROI- 411 AM MDT SAT AUG 20 2011 THIS HAZARDOUS WEATHER OUTLOOK IS FOR EASTERN IDAHO. .DAY ONE...TODAY AND TONIGHT NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY THE PROBABILITY FOR WIDESPREAD HAZARDOUS WEATHER IS LOW. .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.
1 wildfire. Local standard time, as filed.
Lightning caused a fire in northeastern Bannock County on the Fort Hall Indian Reservation. The fire began at about 1 pm MDT on August 20th and burned about 600 acres. 2 and a half mile road was closed for fire crews and some homes on the road were threatened but were never needed to be evacuated.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Idaho in 2011Every state in 2011This day in weather historyWarnings in Idaho, August 2011
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: 344419.