The Arcadia canal overflowed 6 miles west of Ashton and flooded Sadorus Hill Road with 3 feet of water in spots covering 100 yards of the road.
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.
The Arcadia canal overflowed 6 miles west of Ashton and flooded Sadorus Hill Road with 3 feet of water in spots covering 100 yards of the road.
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 2, 3:31 AM MST, 29 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE POCATELLO ID 331 AM MST FRI JAN 2 2009 SHORT TERM...TODAY THROUGH SUNDAY NIGHT. LATEST IR SATELLITE SHOT SHOWING CLOUDS AND ASSOCIATED PRECIP DUE TO OVERRUNNING. QUITE UNBELIEVABLE OVERRUNNING IN FACT AS TEMPS THIS MORNING RANGE FROM 44F AT BURLEY...44F AT CHALLIS...AND 34F BEING REPORTED AT STANLEY. THIS WILL CHANGE HOWEVER AS STRONG COLD FRONT MOVES THROUGH AREA LATER THIS MORNING AND EARLY THIS AFTERNOON. SNOW LEVELS ARE QUITE HIGH AT THE MOMENT BUT WILL BE DROPPING ONCE FRONT GOES THROUGH. MODELS HAVE PULLED BACK SOME ON SNOW AMOUNTS BUT STILL WELL WITHIN WARNING CRITERIA. THUS CONTINUED ALL WINTER STORM WARNINGS FOR CENTRAL...EASTERN...AND SOUTHERN HIGHLANDS. SNOWFALL AMOUNTS EXPECTED TO BE 10 TO 14 INCHES IN SAWTOOTHS WHILE UP TO A FOOT EXPECTED IN EASTERN AND SOUTHERN HIGHLANDS. ANOTHER CONCERN ARE THE WINDS. 120KT JET PROGGED TO MOVE OVER REGION THIS MORNING AND IN RESPONSE...PRESSURE GRADIENT WILL TIGHTEN UP ONCE AGAIN. THUS...HAVE ISSUED WIND ADVISORY FOR ENTIRE SNAKE RIVER PLAIN AND CARIBOU HIGHLANDS AS WINDS EXPECTED TO BE OVER 30 MPH FOR MUCH OF THE DAY WITH GUSTS EXCEEDING 45 MPH. BLOWING AND DRIFTING SNOW WILL CERTAINLY BE A CONCERN. PRECIP WILL PUSH OUT OF AREA BY SATURDAY MORNING AS WEAK TRANSITORY RIDGING SETS UP. HOWEVER...NOW MUST CONTEND WITH A REMARKABLE TEMPERATURE CHANGE. HI TEMPS ARE EXPECTED TO DROP ROUGHLY 30 DEGREES BY SATURDAY WITH LOWS BELOW ZERO IN MOUNTAINOUS AREAS AND SINGLE DIGITS ACROSS REMAINING REGIONS. GFS/NAM12/EUROPEAN ALL HIGHLIGHT THIS CHANGE SINCE THICKNESS VALUES REFLECT THIS SHARP DECREASE. A COLD SNAP FOR SURE. BY MONDAY TEMPS WILL REBOUND TO MORE SEASONAL TEMPS AS WEAK RIDGING SETS UP OVER SERN ID. THIS PATTERN WILL PERSIST THROUGH SUNDAY NIGHT. RENWICK && LONG TERM...MONDAY THROUGH THURSDAY. AN ACTIVE WEATHER PATTERN IS EXPECTED FOR EARLY NEXT WEEK. EASTERN IDAHO WILL REMAIN IN A RATHER FAST MOVING WESTERLY FLOW WITH A SERIES OF STORMS COMING THROUGH EVERY 48 TO 60 HOURS. WITH THE TRAJECTORY OF THE STORMS...MOST OF THE PRECIPITATION WILL BE MOUNTAIN BASED. MONDAYS STORM WILL IMPACT ALL AREAS WITH SNOWFALL AND A GOOD SHOT OF WIND. FOR TUESDAY AND WEDNESDAY...PRECIP CHANCES DROP OFF IN THE SNAKE PLAIN WITH CONTINUED HIGHER CHANCES IN THE CENTRAL IDAHO MOUNTAINS. THE NEXT BEST CHANCE FOR THE ENTIRE AREA WILL START ON THURSDAY...WITH A MIX OF PRECIP BELOW 5000 FEET AND SNOW ABOVE THAT LEVEL. AS FAR AS WINDS...BREEZY CONDITIONS CAN BE ANTICIPATED THROUGHOUT THE WEEK. SOME WARMING CAN BE EXPECTED DURING THE DAYTIME AS THE WEEK PROGRESSES WITH WEAK WARM AIR ADVECTION. VLP AVIATION...STRONG COLD FRONT IS EXPECTED TO RACE THROUGH THE AREA BETWEEN 18Z AND 00Z THIS AFTERNOON. MID LEVEL CLOUDS AND VFR CONDITIONS TO QUICKLY DETERIORATE WITH THE FRONT ARRIVAL...CREATING AREAS OF SNOW AND RAIN SNOW MIX IN BYI VICINITY AND IFR CONDITIONS FOR A 4 TO 8 HOUR PERIOD WITH THE FRONTAL PASSAGE. STRONG WINDS IN THE SNAKE RIVER VALLEY WILL CREATE PROBLEMS FOR MOST AIRCRAFT WITH GUSTS AT 35 TO 50 MPH FROM THE SOUTHWEST SHIFTING TO WEST AND NORTHWEST WITH FRONTAL PASSAGE. VLP && .PIH WATCHES/WARNINGS/ADVISORIES... WIND ADVISORY UNTIL 4 AM MST SATURDAY FOR IDZ017-020>022. WINTER STORM WARNING UNTIL 11 PM MST THIS EVENING FOR IDZ019-023- 025. WINTER STORM WARNING UNTIL 5 PM MST THIS AFTERNOON FOR IDZ018- 031. &&
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE POCATELLO ID 207 PM MST THU JAN 1 2009 IDZ017>025-031-032-021130- 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- 207 PM MST THU JAN 1 2009 THIS HAZARDOUS WEATHER OUTLOOK IS FOR EASTERN IDAHO. .DAY ONE...TONIGHT A WINTER STORM WARNING IS IN EFFECT FOR THE UPPER SNAKE HIGHLANDS...EASTERN HIGHLANDS AND THE CENTRAL MOUNTAINS. A PACIFIC STORM SYSTEM APPROACHING THE AREA WILL SPREAD PRECIPITATION OVER THE AREA TODAY WHICH WILL CONTINUE OVERNIGHT TONIGHT. MODERATE TO HEAVY SNOWFALL IS EXPECTED TO DEVELOP IN THE WARNING AREA. MEANWHILE WARMER TEMPERATURES WILL ALLOW PRECIPITATION TO FALL AS A RAIN AND SNOW MIX IN THE LOWER ELEVATIONS...INCLUDING THE SNAKE RIVER PLAINS. GUSTY WINDS WILL ALSO CONTINUE ACROSS THE AREA THROUGH TONIGHT. .DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY THE STRONG PACIFIC STORM WILL EXIT THE AREA FRIDAY EVENING WITH COLDER AND DRIER AIR RETURNING TO EASTERN IDAHO FRIDAY NIGHT AND SATURDAY. STORM TOTAL ACCUMULATIONS WILL REACH 1 TO 2 FEET ABOVE 6500 FEET AND 6 TO 12 INCHES NEAR VALLEY FLOORS IN THE CENTRAL MOUNTAINS...EASTERN HIGHLANDS AND THE UPPER SNAKE HIGHLANDS. LESSER AMOUNTS ARE EXPECTED IN THE SNAKE PLAIN AND SOUTHWARD. GUSTY WINDS WILL CONTINUE THROUGH FRIDAY THROUGHOUT THE AREA AND MAY PRODUCE AREAS OF BLOWING AND DRIFTING SNOW. GENERALLY DRY BUT COLD CONDITIONS ARE EXPECTED SATURDAY AND SUNDAY HOWEVER YET ANOTHER STRONG STORM SYSTEM PUSHES ONSHORE SUNDAY NIGHT AND WILL KEEP CONDITIONS WET INTO WEDNESDAY. .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.
1 flood. Local standard time, as filed.
The Arcadia canal overflowed 6 miles west of Ashton and flooded Sadorus Hill Road with 3 feet of water in spots covering 100 yards of 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, January 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: 152608.