Rainfall and snowmelt caused several basements to be flooded in Bannock County and flooded roads in Minidoka County.
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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.
Rainfall and snowmelt caused several basements to be flooded in Bannock County and flooded roads in Minidoka County.
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 Feb 24, 3:38 AM MST, 8 hours 22 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE POCATELLO ID 338 AM MST TUE FEB 24 2009 .SHORT TERM...TODAY THROUGH FRIDAY. A WEAK COLD FRONT IS PUSHING THROUGH EASTERN IDAHO THIS MORNING WITH SOME MODERATE CONVECTIVE RAIN SHOWERS AND HIGH ELEVATION SNOW SHOWERS WIDESPREAD. EXPECT ACTIVITY TO TAPER OFF A BIT BY MID MORNING BUT ENOUGH INSTABILITY AND MOISTURE TO KEEP CHANCE TO LIKELY SHOWERS GOING THROUGH TODAY. SNOW LEVELS UP AROUND 6500 FEET TODAY. TEMPERATURES WELL ABOVE FREEZING MOST LOCATIONS AT 3 AM THIS MORNING. NEXT UPPER TROF PUSHES SOUTH WEDNESDAY AND FORMS A CLOSED LOW OFF WASHINGTON COAST WHICH MOVES INTO IDAHO FRIDAY AND DRIVES THROUGH A STRONG COLD FRONT. EXPECT MOISTURE TO CONTINUE TO FILTER INTO IDAHO AHEAD OF THIS NEXT SYSTEM WEDNESDAY ANT THURSDAY AND KEPT PRECIPITATION IN THE FORECAST DAILY THROUGH FRIDAY. SNOW LEVELS SHOULD REMAIN ELEVATED THROUGH THURSDAY AND MAY DROP BACK TO VALLEY FLOORS BEHIND COLD FRONT THURSDAY NIGHT OR FRIDAY. WILL BE BREEZY BEHIND THE COLD FRONTAL PASSAGE TODAY. GK .LONG TERM...FRIDAY NIGHT THROUGH TUESDAY. SOME EARLY DIFFERENCES BETWEEN THE GFS AND ECMWF. ECMWF MUCH QUICKER AND WEAKER WITH SHORTWAVE EJECTING OUT OF THE REGION FRIDAY NIGHT INTO SATURDAY. GFS SIGNIFICANTLY STRONGER AND SLOWER WITH FEATURE...LEADING TO A MILDER AND WETTER FORECAST. BELIEVE THE ECMWF HAS BETTER HANDLE ON THIS FEATURE DUE TO INCREASING HEIGHTS AHEAD OF PACIFIC LOW INTO THE WEEKEND. IN ADDITION...NAM SUPPORTS ECMWF WITH QUICKER SOLUTION. REGARDLESS...KEPT POPS CLOSE TO CLIMO EARLY IN THE EXTENDED DUE TO UNCERTAINTY AND COLLABORATION WITH NEIGHBORS. BOTH GFS AND ECMWF BRING PRECIP INTO IDAHO SATURDAY NIGHT INTO SUNDAY. BOTH HAVE SLIGHTLY DIFFERENT LOOK TO PACIFIC LOW...BUT GENERALLY KEEP MILD AND UNSETTLED CONDITIONS OVER REGION FOR THE REST OF THE EXTENDED PERIOD. DMH .AVIATION...CONVECTION OCCURRING OVER MUCH OF EASTERN IDAHO THIS MORNING. SNOW LEVELS ARE ELEVATED ESPECIALLY OVER SOUTHERN HALF OF REGION DUE TO WARM SOUTHERLY FLOW. THUS PRECIP MAINLY RAIN SOUTHERN HALF OF SNAKE VALLEY FOR BOTH KPIH AND KBYI...CHANGING TO SNOW BY KIDA. WINDS HAVE BEEN FAIRLY GUSTY ALONG WITH CONVECTION. OVERALL CONDITIONS REMAIN VFR WITH OCCASIONAL IFR UNDER THE PRECIP. EXPECT PRECIP TO CONTINUE THROUGHOUT THE DAY AND REMAIN RAIN FOR KPIH AND KBYI. SNOW AT AND NEAR KIDA SHOULD CHANGE TO RAIN LATER IN THE DAY. DMH && .PIH WATCHES/WARNINGS/ADVISORIES... NONE. &&
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE POCATELLO ID 600 AM MST TUE FEB 24 2009 IDZ017>025-031-032-251400- 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- 600 AM MST TUE FEB 24 2009 THIS HAZARDOUS WEATHER OUTLOOK IS FOR EASTERN IDAHO. .DAY ONE...TODAY AND TONIGHT EXPECT VALLEY RAIN SHOWERS AND MOUNTAIN SNOW SHOWERS ABOVE 6500 FEET TODAY. 1 TO 3 INCHES ARE POSSIBLE ABOVE 6500 FEET. .DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY EXPECT PERIODS OF VALLEY RAIN AND SNOW AND MOUNTAIN SNOW THROUGH FRIDAY. SNOW LEVELS MAY REACH VALLEY FLOORS BY FRIDAY. .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 national radar mosaic for the moment the first event began.
2 flood. Local standard time, as filed.
Several basements were flooded in Chubbuck and Lava Hot Spring due to rainfall and snowmelt.
Road 600 West was closed between 600 North and 900 North due to recent rain and warmer temperatures which caused extensive water on the road.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Idaho in 2009Every state in 2009This day in weather historyWarnings in Idaho, February 2009
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: 154453, 154457.