A flat-roofed cinder block commercial building roof collapsed. The building in Rexburg housed both Rocky Mountain ATVs and Custom Auto.
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 flat-roofed cinder block commercial building roof collapsed. The building in Rexburg housed both Rocky Mountain ATVs and Custom Auto. Heavy snow collected on the roof was the cause of the collapse.
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 Jan 18, 3:15 AM MST, 4 hours 45 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE POCATELLO ID 315 AM MST TUE JAN 18 2011 .SHORT TERM...TODAY THROUGH THU AFTERNOON. SHORTWAVE EXPECTED TO MOVE IN TONIGHT...POSSIBLY BY MID AFTERNOON. WARM AIR MOVING IN AT FIRST WITH THIS FRONT WILL WARM THINGS UP AND LOWER THE SNOW TO LIQUID RATIOS SO THAT EVEN A SNOW ADVISORY IS NOT EXPECTED. MOST ACCUMULATIONS SHOULD BE FROM 1 TO 5 INCHES IN THE MOUNTAINS AND ZERO TO 2 INCHES FOR THE VALLEY ZONES. HEAVIEST SNOW WILL OCCUR LATE TONIGHT ONCE THE TEMPERATURE COOLS...SO EXPECT THE HIGHEST AMOUNTS IN THE IDAHO WASATCH AND IN THE MOUNTAINS ALONG THE WYOMING BORDER. STRONG WIND ALOFT WILL BE ABLE TO MIX DOWN WITH THIS FEATURE...BUT WITH AN OVERNIGHT FRONTAL PASSAGE EXPECT WIND TO BE BREEZY TO WINDY BUT NOT REQUIRE A WIND ADVISORY. HAVE BOOSTED POPS TO ABOVE MOS GUIDANCE WHICH TENDS TO HAVE A DRY BIAS ONCE POPS ARE IN THE LIKELY RANGE...AND TO KEEP UP WITH SURROUNDING OFFICES. LINGERING SHOWERS WED MORNING WILL FOR THE MOST PART CLEAR DURING THE AFTERNOON...WITH ONLY SOME UPSLOPE ENHANCED SHOWER ACTIVITY. COLD AND STABLE AIR ARRIVING WED MORNING MEANS A SIGNIFICANT DROP IN TEMPERATURES WITH BELOW AVERAGE HIGHS AND LOWS EXPECTED BY WED NIGHT/THU. THIS INCLUDES SOEM BELOW ZERO IN THE CENTRAL IDAHO BASINS. WIND SHOULD NOT BE SIGNIFICANT AFTER TONIGHT. .LONG TERM...THURSDAY NIGHT THROUGH MONDAY. THE ECM REMAINS THE FAVORITE MODEL OWING TO ITS LATEST TRACK RECORD. THE NEXT DISTURBANCE IN A NORTHWEST FLOW PATTERN WILL CROSS SOUTHEAST IDAHO FRIDAY NIGHT AND SATURDAY. MODEL QPF OF .3 TO .35 LIQUID IN THE CENTRAL MOUNTAINS AND EASTERN HIGHLANDS SUGGEST SEVERAL INCHES OF MOUNTAIN SNOW BUT SHORT OF A HEAVY SNOW EVENT. IN THE LOWER SNAKE PLAIN FROM BURLEY TO POCATELLO...FORECAST MAX TEMPERATURES IN THE LOW TO MID 30S FAVOR MORE SNOW THAN RAIN. OTHERWISE...A FEW LIGHT BOUTS OF SNOW IN THE MOUNTAINS HERE AND THERE IN THE NORTHWEST FLOW. RS && .AVIATION...SOUTH TO SOUTHWEST SURFACE WINDS REMAIN ON THE BREEZY SIDE THIS MORNING WITH AND OLD DECAYING COLD FRONT TRAILING THROUGH SOUTHWEST MONTANA AND THE IDAHO CENTRAL MOUNTAINS...ALONG WITH SURFACE LOW PRESSURE IN WYOMING. THE PRESSURE GRADIENT WEAKENS SOME THIS EVENING BUT ONLY FOR A FEW HOURS SINCE THERE IS ANOTHER COLD FRONT TO REACH KSUN A LITTLE AFTER 19/00Z AND SAG SOUTHWARD THROUGH THE SNAKE PLAIN THROUGH WEDNESDAY MORNING. ONSET OF SNOW AT KSUN SHOULD BE CLOSE TO TIMING OF THE FRONT AND ABOUT 19/04Z FOR KIDA AND KPIH. THE DISTURBANCE PASSES EARLY WEDNESDAY WITH SNOW LINGERING OVER THE CARIBOU AND SOUTH CENTRAL HIGHLANDS AFTER 19/11Z. SNOW LEVELS THIS EVENING SHOULD BE NEAR 4800 FEET MSL...FALLING QUICKLY WITH ARRIVAL OF THE FRONT. RS && .PIH WATCHES/WARNINGS/ADVISORIES... NONE. &&
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE POCATELLO ID 549 AM MST TUE JAN 18 2011 IDZ017>025-031-032-191300- 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- 549 AM MST TUE JAN 18 2011 THIS HAZARDOUS WEATHER OUTLOOK IS FOR EASTERN IDAHO. .DAY ONE...TODAY AND TONIGHT NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. 1 TO 5 INCHES OF SNOW IS EXPECTED IN THE MOUNTAINS OF SOUTHERN AND CENTRAL IDAHO FOR TODAY AND TONIGHT...AND 1 TO 3 INCHES IN THE SNAKE RIVER PLAIN AND EASTERN MAGIC VALLEY FOR THE SAME TIME. .DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY THE PROBABILITY FOR WIDESPREAD HAZARDOUS WEATHER IS LOW. MORE SNOW IS POSSIBLE ON SATURDAY. .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 heavy snow. Local standard time, as filed.
A flat-roofed cinder block commercial building roof collapsed. The building in Rexburg housed both Rocky Mountain ATVs and Custom Auto. Heavy snow collected on the roof was the cause of the collapse.
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, January 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: 278211.