A warm and moist overrunning set up provided ample lift and moisture for a strong Pacific storm that hit much of Western Idaho and Eastern Oregon with heavy snow and gusty winds during the overnight hours between the fourth and fifth of January.
Every event with a place to put it; 3 filed by county or forecast zone are drawn at its center, in a lighter ring. 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 BOI wrote it up.
A warm and moist overrunning set up provided ample lift and moisture for a strong Pacific storm that hit much of Western Idaho and Eastern Oregon with heavy snow and gusty winds during the overnight hours between the fourth and fifth of January.
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 Boise, ID wrote its last area forecast discussion before the first event at Jan 4, 8:37 PM MST, 5 hours 23 minutes earlier.
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</html>HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE BOISE ID 525 AM MST SUN JAN 4 2009 IDZ011>016-028>030-ORZ061>064-051230- WEST CENTRAL MOUNTAINS-LOWER TREASURE VALLEY ID-BOISE MOUNTAINS- UPPER TREASURE VALLEY-SOUTHWEST HIGHLANDS-WESTERN MAGIC VALLEY- CAMAS PRAIRIE-OWYHEE MOUNTAINS-SOUTHERN TWIN FALLS COUNTY- HARNEY COUNTY-BAKER COUNTY-MALHEUR COUNTY- LOWER TREASURE VALLEY OR- 525 AM MST SUN JAN 4 2009 /425 AM PST SUN JAN 4 2009/ THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF SOUTH CENTRAL IDAHO...SOUTHWEST IDAHO...WEST CENTRAL IDAHO...NORTHEAST OREGON AND SOUTHEAST OREGON. .DAY ONE...TODAY AND TONIGHT A WINTER STORM WATCH IS IN EFFECT BEGINNING LATE TONIGHT FOR THE WEST CENTRAL AND BOISE MOUNTAINS...BAKER COUNTY...CAMAS PRAIRIE AND THE UPPER TREASURE VALLEY. THIS STORM WILL BRING GUSTY WINDS AND WIDESPREAD SNOWFALL THROUGH MONDAY. REFER TO THE WINTER STORM WATCH FOR SPECIFIC TIMING...SNOW ACCUMULATIONS AND WIND SPEEDS. .DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY ANOTHER PACIFIC STORM WILL IMPACT THE FORECAST AREA ON TUESDAY. EXPECT HIGHER SNOW LEVELS WITH THIS SYSTEM...FOR GREATEST SNOWFALL ACCUMULATIONS THROUGHOUT THE WEST CENTRAL AND BOISE MOUNTAINS AND HIGHER ELEVATIONS OF BAKER COUNTY. RAIN WILL BE THE PREDOMINANT PRECIPITATION TYPE THROUGHOUT LOWER VALLEYS. .SPOTTER INFORMATION STATEMENT... SPOTTERS SHOULD REPORT SIGNIFICANT WEATHER VIA ESTABLISHED PROCEDURES.
The national radar mosaic for the moment the first event began.
3 heavy snow. Local standard time, as filed.
Cooperative observers, trained spotters and SNOTELS reported seven to eight inches of snow.
Cooperative observers, trained spotters and SNOTELS reported six to eight inches of snow.
Trained spotters near Blaine and Fairfield reported six to seven inches of snow.
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 2026-10-01. Each event’s entry at NCEI: 150707, 150706, 150708.