1 heavy snow, as filed by the National Weather Service.
Every event with a place to put it; 1 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 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 Dec 13, 1:40 AM PST, 5 hours 50 minutes earlier.
SOUTHWEST IDAHO/SOUTHEAST OREGON AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE BOISE IDAHO
240 AM MST THU DEC 13 2001
WINTER STORM WARNINGS TO BE ISSUED THIS PACKAGE FOR HEAVY SNOW
IN NRN MOUNTAIN ZONES TONIGHT AND FRIDAY.
WEAK WARM FRONT NOW MOVING EWD ACROSS OR/ID BORDER WITH LIGHT SNOW.
MINOR ACCUMULATION LIKELY BY MORNING COMMUTE. MUCH STRONGER N
PACIFIC STORM WILL COME INLAND LATER TODAY WITH WIDESPREAD PCPN...
ALL SNOW IN MOUNTAINS...BUT CHANGING TO RAIN BELOW 4K AS SECOND
WARM FRONT COMES THROUGH. HEAVIEST PCPN TONIGHT WILL TRACK
ESEWD ACROSS NRN ZONES AS THE SECOND WARM FRONT RETREATS SLOWLY
SWD AS THE MAIN COLD UPPER TROUGH COMES INLAND. TECHNICALLY THIS
CHANGES THE WARM FRONT INTO A COLD FRONT BUT ITS STILL THE
SAME FEATURE. SRN-MOST ZONES WILL BE REMAIN IN THE SHRINKING
WARM SECTOR TONIGHT. THE OWYHEE MOUNTAINS WILL BE ON THE SOUTHERN
FRINGE OF HEAVIER PCPN AND SNOW ADVISORY IS THE MOST THAT CAN BE
OFFERED THERE. THE REAL COLD FRONT WILL COME IN FROM THE WEST
FRIDAY MORNING WITH ANOTHER SEVERAL HOURS OF HEAVY PCPN...AND THE
STRONG COLD ADVECTION BEHIND IT WILL CHANGE RAIN BACK TO SNOW
IN THE VALLEYS WITH AT LEAST AN INCH ACCUMULATION. SNOW SHOWERS
WILL DECREASE W-E LATER FRIDAY BUT AVN SHOWS ONE MORE LOBE LATE
FRIDAY AND FRIDAY NIGHT WITH MORE SNOW SHOWERS...AND THAT LOBE
SHOULD NOT BE UNDERESTIMATED AS IT COMES IN VIA NWLY UPSLOPE FLOW
AND CONTINUED STRONG COLD ADVECTION. AVN SHOWS MOST PCPN WITH FINAL
LOBE IN NRN OREGON ZONES SUNSET FRIDAY...SHIFTING TO IDAHO ZONES
FRIDAY EVENING. CLEARING AND CALMING DOWN OVERNIGHT FRI/SAT AS
SURFACE HIGH BUILDS IN UNDER NWLY FLOW ALOFT...LEADING TO VERY
COLD BUT DRY DAY SATURDAY. AVN SUGGESTS WARM FRONT SATURDAY EVENING
BUT ITS OUT OF PHASE WITH H3 JET...SO WONT MAKE MUCH OF IT...JUST
SOME CLOUDS.
EXTENDED...USING AVN AND MRF...BETTER WARM FRONT WITH MORE PCPN FROM
NEXT N PACIFIC STORM COMES EWD INTO CWA SUNDAY EVENING FOLLOWED BY
COLD FRONT MONDAY. PROGRESSIVE PATTERN BRINGS RIDGING AND DRYING
TUE THEN NEXT TROUGH AND MORE PCPN WED...ENDING THU. WONT CHANGE
CURRENT FORECAST OF CHANCE OF SNOW EACH DAY. L COLIN
.BOI...WINTER STORM WARNING TODAY THROUGH FRIDAY MORNING BAKER COUNTY
ABOVE 4000 FEET FOR HEAVY SNOW.
WINTER STORM WARNING THIS AFTERNOON THROUGH NOON FRIDAY NRN
MOUNTAIN ZONES IN IDAHO FOR HEAVY SNOW...11 13
WINTER STORM WARNING TONIGHT THROUGH NOON FRIDAY IN THE CAMAS
PRAIRIE FOR HEAVY SNOW...ZONE 28
SNOW ADVISORY TONIGHT THROUGH FRIDAY MORNING OWYHEE MOUNTAINS
IDAHO ZONE 29The national radar mosaic for the moment the first event began.
1 heavy snow. Local standard time, as filed.
Blowing and drifting snow caused the closure of Interstate 84 between Baker City and Ontario, Oregon for several hours after a storm dropped up to 10 inches of snow across Baker County.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Oregon in 2001Every state in 2001This day in weather historyWarnings in Oregon, December 2001
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: 5276210.