A winter storm moving through the Great Basin provided for upslope conditions across parts of Southern Idaho and Southeast Oregon. Six to twelve inches of snow fell in Baker County, Oregon in the early morning hours of December 7th.
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 episode as NWS BOI wrote it up.
A winter storm moving through the Great Basin provided for upslope conditions across parts of Southern Idaho and Southeast Oregon. Six to twelve inches of snow fell in Baker County, Oregon in the early morning hours of December 7th.
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 6, 8:17 PM MST, 5 hours 43 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE BOISE ID 817 PM MST THU DEC 6 2007 .DISCUSSION...AT 02Z THE MAIN PACIFIC LOW WAS ENTERING CALIF 40N HEADED ESEWD TOWARD SOUTHERN NV. A SECONDARY LOW NEAR PDX WAS FILLING AS IT MOVED SLOWLY EAST ACROSS NRN OREGON. THE TWO LOWS HAD BEEN CONNECTED BY ENHANCED CLOUDS AND STEADY LIGHT PCPN BUT SINCE 22Z CLOUD TOPS HAVE WARMED AND PCPN HAS DECREASED AS THE LOWS CONTINUE TO SEPARATE. THE NORTHERN LOW WILL CONTINUE LIGHT RAIN AND SNOW IN NRN ZONES OVERNIGHT WHILE THE SOUTHERN LOW MAINTAINS HEAVIER PCPN...MAINLY SNOW...NEAR THE NEVADA BORDER ALL NIGHT INTO FRIDAY MORNING. ON FRIDAY THE NEVADA LOW WILL FILL AS IT TURNS NEWD TOWARD SERN IDAHO WHILE THE WEAK NERN OREGON LOW GETS REINFORCED FROM THE NORTH FROM A SHORT WAVE TROUGH WHICH COULD BE SEEN IN NRN BC AT 02Z. THE MERGER WILL FORM A NEW MAIN LOW IN OREGON AND PROLONG SNOW SHOWERS IN OUR WRN ZONES. THE NEW LOW WILL HEAD DUE SOUTH ALONG 120W FRIDAY NIGHT FOLLOWED BY COLDER AIR FROM THE NORTH WHICH WILL TURN ANY REMAINING PCPN TO ALL SNOW. THE SNOW WILL FINALLY END MIDDAY SATURDAY ALONG NEVADA BORDER. WE WILL THEREFORE KEEP SNOW ADVISORY GOING IN OUR SRN ZONES AS LISTED BELOW. LIGHTER RAIN AND SNOW SHOWERS IN NORTHERN ZONES WILL BECOME ALL SNOW SHOWERS LATE FRIDAY/FRIDAY EVENING. CURRENT FORECAST REMAINS GOOD...NO UPDATES. && .AVIATION...CEILINGS WILL LOWER IN ADVANCE OF A PACIFIC STORM SYSTEM. RAIN SHOWERS IN THE SNAKE RIVER PLAIN WITH SNOW SHOWERS ELSEWHERE. BULK OF PRECIPITATION...MAINLY SNOW...WILL BE SOUTH OF THE SNAKE RIVER PLAIN AND IN SOUTHERN HARNEY AND MALHEUR COUNTIES IN OREGON. WIDESPREAD MVFR AND LOCAL LIFR CONDITIONS IN RAIN AND SNOW. MOUNTAIN OBSCURATION IN LOWER CEILINGS. LIGHT SURFACE WINDS OVERNIGHT WILL BECOME NORTHERLY AND INCREASE ON FRIDAY. VARIABLE WINDS ALOFT WILL BECOME NORTHERLY FRIDAY AND INCREASE. && .PREV DISCUSSION... SHORT TERM...DIFFICULT FORECAST TODAY WITH SEVERAL FEATURES OVER THE EASTERN PACIFIC GATHERING AND STARTING TO CONSOLIDATE. MODELS MAY NOT INITIALIZE WELL IN THIS CHAOTIC PATTERN BUT HAVE DECIDED TO TAKE THE SOUTHERN ZONE SNOW EVENT AND HENCE THE NAM SOLUTION FOR OUR AREA. ALL MODELS HOWEVER HAVE BEEN TRENDING FARTHER NORTH WITH EACH RUN AND NUMERICAL GUIDANCE POPS HAVE INCREASED ACCORDINGLY. THIS APPEARS TO BE A PRETTY GOOD SNOW EVENT FOR OUR SOUTHERN ZONES...ESPECIALLY THE SOUTHERN MOUNTAINS. SOME AREAS MAY GET CLOSE TO WARNING CRITERIA SNOW BEFORE ALL IS SAID AND DONE. ALSO...EXPANDED THE SNOW ADVISORY WEST AND NORTH INTO MALHEUR AND HARNEY COUNTIES IN OREGON WITH SNOW ALREADY FALLING IN THE BURNS AREA AND THE STEENS LIKELY TO GET SIGNIFICANT SNOW FROM THIS SYSTEM. VALLEY AREAS APPEAR TO BE TOO WARM FOR SNOW WITH SURFACE TEMPS HOVERING IN THE MID 30S AND LACK OF COLD AIR UNTIL FRIDAY NIGHT...BUT A MIXTURE OF RAIN AND SNOW IS LIKELY NEAR DAYBREAK WITH LITTLE IF ANY ACCUMULATION. SYSTEM DEEPENS TO OUR SOUTH ON FRIDAY PUSHING AN INVERTED TROF NORTHWARD WITH WRAP AROUND MOISTURE. THIS IS A CHANGE FROM PREVIOUS RUNS IN HOLDING ONTO MORE MOISTURE FOR A LONGER DURATION. FINALLY...MAJOR SYSTEM PULLS AWAY FRIDAY NIGHT BUT LEAVES SOUTHERN TWIN FALLS COUNTY STILL PRONE TO ACCUMULATING SNOW AS SYSTEM WINDS UP OVER UTAH. INCREASED WINDS AND COLD AIR BEGIN TO INFILTRATE INTO THE AREA BEHIND LOW PRESSURE CENTER FRIDAY NIGHT...THEN COLDER AND DRIER SATURDAY AS NORTHERLY FLOW DEVELOPS OVER THE AREA WITH A NEW RIDGE BUILDING IN THE PACIFIC NORTHWEST. TEMPS TO FALL ANOTHER 5 TO 10 DEGREES THIS PERIOD AS CHANGE OF AIR MASS TAKES PLACE. LONG TERM...SATURDAY NIGHT THROUGH THURSDAY...MODELS IN FAIRLY GOOD AGREEMENT BUT THEY DIFFER ON THE STRENGTH OF THE SYSTEMS. RIDGE WILL CONTINUE TO BUILD OVER THE AREA SATURDAY NIGHT INTO SUNDAY FOR A DRY COLD NORTHERLY FLOW. SOME DIFFERENCES BEGIN TO SHOW UP SUNDAY NIGHT INTO MONDAY AS TO HOW TO HANDLE A SHORTWAVE DROPPING SOUTH OUT OF CANADA. WITH LOW CONFIDENCE IN THE MODELS WILL GO WITH A MODEL BLEND AND PUT LOW POPS IN THE FORECAST AND BEGIN TO SLOWLY INCREASE TEMPERATURES. ON TUESDAY RIDGE WILL MOVE EASTWARD OVER THE FORECAST AREA AND THEN BREAK DOWN ON WEDNESDAY WITH THE NEXT SHORTWAVE TO MOVE THROUGH THE SYSTEM. STILL SOME UNCERTAINTY ON THE TIMING OF THIS SHORTWAVE SO WILL TREND POPS TOWARD CLIMATOLOGY WITH THE DEVELOPING WESTERLY FLOW AND WILL SLOWLY INCREASE TEMPERATURES FOR WEDNESDAY AND THURSDAY. && .BOI WATCHES/WARNINGS/ADVISORIES... ID...SNOW ADVISORY FROM UNTIL 5 PM MST FRIDAY ZONES 15 29 30. OR...SNOW ADVISORY FROM UNTIL 10 AM PST FRIDAY ZONES 61 63. && WEATHER.GOV/BOISE DISCUSSION...LC AVIATION.....SL PREV SHORT TERM...GS PREV LONG TERM....JA/LH
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE BOISE ID 450 PM MST THU DEC 6 2007 IDZ011>014-016-028-ORZ062-064-080000- WEST CENTRAL MOUNTAINS-LOWER TREASURE VALLEY ID-BOISE MOUNTAINS- UPPER TREASURE VALLEY-WESTERN MAGIC VALLEY-CAMAS PRAIRIE- BAKER COUNTY-LOWER TREASURE VALLEY OR- 450 PM MST THU DEC 6 2007 /350 PM PST THU DEC 6 2007/ THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF SOUTH CENTRAL IDAHO...SOUTHWEST IDAHO...WEST CENTRAL IDAHO...NORTHEAST OREGON AND SOUTHEAST OREGON. .DAY ONE...TONIGHT NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION WILL NOT BE NEEDED. IDZ015-029-030-080000- SOUTHWEST HIGHLANDS-OWYHEE MOUNTAINS-SOUTHERN TWIN FALLS COUNTY- 450 PM MST THU DEC 6 2007 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF SOUTH CENTRAL IDAHO AND SOUTHWEST IDAHO. .DAY ONE...TONIGHT A SNOW ADVISORY REMAINS IN EFFECT FOR TONIGHT FOR THE SOUTHERN PART OF IDAHO INCLUDING THE OWYHEE MOUNTAINS, THE SOUTHWEST HIGHLANDS AND SOUTHERN TWIN FALLS COUNTY. .DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY THE SNOW ADVISORY CONTINUES UNTIL 5 PM FRIDAY EVENING. TOTAL SNOW ACCUMULATION OF 3 TO 6 INCHES IS POSSIBLE WITH HEAVIER AMOUNTS POSSIBLE SOUTH OF TWIN FALLS. .SPOTTER INFORMATION STATEMENT... SPOTTER SHOULD REPORT SIGNIFICANT WEATHER CONDITIONS THRUGH STANDING OPERATING PORCEDURES. ORZ061-063-080000- HARNEY COUNTY-MALHEUR COUNTY- 450 PM MST THU DEC 6 2007 /350 PM PST THU DEC 6 2007/ THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF SOUTHEAST OREGON. .DAY ONE...TONIGHT THE NATIONAL WEATHER SERVICE IN BOISE HAS ISSUED A SNOW ADVISORY...WHICH IS IN EFFECT FROM THIS AFTERNOON UNTIL 11 AM MST /10 AM PST/ FRIDAY. .DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY THE SNOW ADVISORY REMAINS IN EFFECT THROUGH THIS MORNING WITH TOTAL SNOW ACCUMULATIONS OF 2 TO 5 INCHES WITH LOCAL HIGHER AMOUNTS OF 6 INCHES OR MORE ON THE STEENS. .SPOTTER INFORMATION STATEMENT... SPOTTER SHOULD REPORT SIGNIFICANT WEATHER CONDITIONS THRUGH STANDING OPERATING PORCEDURES.
The national radar mosaic for the moment the first event began.
1 heavy snow. Local standard time, as filed.
The Baker County, Oregon Sheriff's office reported four inches of new snow from 2:00 AM to 6:30 AM and six inches total at noon. Many locations in the county received nine or more inches during the event and locally twelve inches as reported by a trained spotter near Sumpter.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Oregon in 2007Every state in 2007This day in weather historyWarnings in Oregon, December 2007
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: 69235.