A moist north to northwest flow brought heavy snow to the Blue Mountains of Oregon. Snowfall amounts of 6 to 16 inches were measured.
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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 PDT wrote it up.
A moist north to northwest flow brought heavy snow to the Blue Mountains of Oregon. Snowfall amounts of 6 to 16 inches were measured.
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 Pendleton, OR wrote its last area forecast discussion before the first event at Mar 1, 3:00 AM PST, 0 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE PENDLETON OR 300 AM PST THU MAR 1 2007 .SHORT TERM...TODAY THROUGH FRIDAY...A DEEP MOIST AND UNSTABLE NORTHWEST FLOW THIS MORNING WITH AN EMBEDDED WEATHER DISTURBANCE IS CAUSING SNOW SHOWERS THIS MORNING OVER NORTHEAST OREGON AND SOUTHEAST WASHINGTON. THE HEAVIEST SNOW FELL AROUND MIDNIGHT...BUT THE SNOW SHOWERS ARE BEGINNING TO BECOME ENHANCED AGAIN ON RADAR AND SATELLITE IMAGERY AS THE LOW LEVEL FLOW BECOMES EVEN MORE NORTHWEST. IT HAS BEEN SNOWING STEADILY OVER THE BLUE MOUNTAINS WITH ALMOST TWO TENTHS OF AN INCH OF LIQUID EQUIVALENT AT KMEH SO FAR WITH A TEMPERATURES IN THE LOWER 20S. THIS WOULD TRANSLATE TO ABOUT 3-4 INCHES OF SNOW THERE WITH A HIGH SNOW TO LIQUID RATIO DUE TO THE VERY COLD TEMPERATURES THERE. THIS IS JUST UNDER THE 12 HOUR SNOW ADVISORY CRITERIA WITH MORE SNOW EXPECTED. AS SUCH HAVE ISSUED A SNOW ADVISORY FOR THIS MORNING UNTIL 10 AM FOR THE BLUE MOUNTAIN ZONES...MAINLY ON THE WINDWARD SLOPES (WEST - NORTHWEST SLOPES). ELSEWHERE SNOW SHOWERS WILL BE MUCH LIGHTER WITH LITTLE IF ANY ACCUMULATION. THE FLOW WILL BECOME NORTHERLY TONIGHT WITH MOISTURE CONTINUING TO SPILL OVER THE TOP OF AN UPPER RIDGE JUST OFF THE COAST TONIGHT AND FRIDAY. HAVE LEFT THE MENTION OF RAIN AND SNOW SHOWERS IN THE FORECAST FOR THOSE TWO PERIODS...HOWEVER DECIDED TO LOWER THE POPS A BIT DUE TO THE NORTHERLY TRAJECTORY AND THE FACT THAT IT IS MOVING OVER THE TOP OF AN UPPER RIDGE RATHER THAN IN A MORE MOIST SOUTHWEST FLOW ALOFT WHICH WOULD PROVIDE MORE PRECIPITATION. CONDITIONS WILL REMAIN COOL TODAY AND FRIDAY WITH READINGS AROUND 5 TO 15 DEGREES BELOW NORMAL. 88 .LONG TERM...FRIDAY NIGHT THROUGH WEDNESDAY...LOW CONFIDENCE IN FORECAST DUE TO VERY LOW RUN TO RUN CONSISTENCY AND POOR MODEL TO MODEL CONSISTENCY AFTER SUNDAY. A WARM FRONT WILL MOVE NORTH THROUGH THE AREA FRIDAY NIGHT. A BUILDING RIDGE WILL PUSH STORM TRACK NORTH SATURDAY AND SUNDAY. NOT SURE HOW MUCH WEATHER WEAK WAVES MOVING THROUGH THE RIDGE WILL BRING. DID NOT CHANGE FORECAST THE REST OF THE WEEK SINCE HAVE ZERO CONFIDENCE IN TIMING/STRENGTH. I HAVE NOT SEEN MODELS KEEP THEM THE SAME PAST 48-72 TO ARRIVAL IN 2 WEEKS. FEEL CURRENT BROAD BRUSH CHANCE WITH UNSETTLED WEATHER IS BEST FORECAST. COONFIELD && .AVIATION...PREVIOUS DISCUSSION...SCATTERED SHOWERS CONTINUE TO BRING RAIN AND SNOW SHOWERS TO THE AREA...MAINLY TO THE MOUNTAINS AND NEAR KDLS. SHOWERS WILL DIMINISH OVERNIGHT. ANOTHER WAVE WILL MOVE INTO THE AREA TOMORROW AFTERNOON/EVENING FOR MORE RAIN AND SNOW SHOWERS. VFR CONDITIONS WILL BE PREVALENT DURING THE NEXT 24 HOURS BUT MVFR/IFR CONDITIONS WILL BE POSSIBLE NEAR THE STRONGER SHOWERS. BREEZY WINDS WILL CONTINUE IN THE COLUMBIA BASIN OVERNIGHT BUT MOST WIND GUSTS SHOULD REMAIN BELOW 25 KTS. PERRY && .PRELIMINARY POINT TEMPS/POPS... PDT 40 32 43 36 / 40 30 60 30 ALW 42 32 44 37 / 40 20 60 40 PSC 44 30 47 37 / 20 10 60 30 YKM 42 27 44 33 / 20 20 60 20 HRI 43 30 46 34 / 20 20 60 20 ELN 38 24 39 31 / 20 30 60 30 RDM 38 28 41 31 / 40 30 50 20 LGD 35 24 39 33 / 30 30 60 50 GCD 40 28 40 31 / 30 30 50 50 DLS 44 31 45 37 / 40 30 50 50 && .PDT WATCHES/WARNINGS/ADVISORIES... OR...SNOW ADVISORY UNTIL 10 AM PST THIS MORNING FOR ORZ502-503. WA...SNOW ADVISORY UNTIL 10 AM PST THIS MORNING FOR WAZ030. && TI:GGG FOR ADDITIONAL WEATHER INFORMATION, CHECK OUR WEB SITE AT... WWW.WEATHER.GOV/PENDLETON 88/76/83
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE PENDLETON OR
1235 AM PST THU MAR 1 2007
ORZ041-WAZ024-501-502-026>030-ORZ042>044-049-050-501>506-011315-
EASTERN COLUMBIA RIVER GORGE OF WASHINGTON-
EAST SLOPES OF THE CENTRAL CASCADES OF WASHINGTON-
EAST SLOPES OF THE SOUTHERN CASCADES OF WASHINGTON-
KITTITAS VALLEY-YAKIMA VALLEY-LOWER COLUMBIA BASIN OF WASHINGTON-
FOOTHILLS OF THE BLUE MOUNTAINS OF WASHINGTON-
NORTHWEST BLUE MOUNTAINS-NORTH CENTRAL OREGON-CENTRAL OREGON-
LOWER COLUMBIA BASIN OF OREGON-GRANDE RONDE VALLEY-WALLOWA COUNTY-
FOOTHILLS OF THE BLUE MOUNTAINS OF OREGON-
NORTHERN BLUE MOUNTAINS OF OREGON-
SOUTHERN BLUE MOUNTAINS OF OREGON-
NORTHERN WHEELER AND SOUTHERN GILLIAM COUNTIES-JOHN DAY BASIN-
OCHOCO-JOHN DAY HIGHLANDS-
1235 AM PST THU MAR 1 2007
THIS HAZARDOUS WEATHER OUTLOOK IS FOR CENTRAL AND NORTHEAST OREGON
AS WELL AS SOUTH CENTRAL AND SOUTHEAST WASHINGTON.
.DAY ONE...TONIGHT
SNOW
BLUE MOUNTAINS OF WASHINGTON AND OREGON
THE UPPER LEVEL DISTURBANCE WILL MOVE ACROSS EASTERN OREGON TONIGHT
WITH NUMEROUS SNOW SHOWERS IN THE MOUNTAINS AND SCATTERED SNOW
SHOWERS ELSEWHERE. FIVE TO SEVEN INCHES ARE POSSIBLE IN THE BLUE
MOUNTAINS...WITH LESSER ACCUMULATIONS ELSEWHERE. A SNOW ADVISORY HAS
BEEN ISSUED FOR THE BLUE
MOUNTAINS UNTIL 10 AM THURSDAY.
.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY
SNOW
BLUE MOUNTAINS OF WASHINGTON AND OREGON
A SERIES OF PACIFIC WEATHER SYSTEMS WILL MOVE INTO THE REGION ON
THROUGH EARLY NEXT WEEK.
.SPOTTER INFORMATION STATEMENT...
SPOTTER ACTIVATION MAY BE REQUIRED.
WEATHER SPOTTERS ARE ENCOURAGED TO REPORT SIGNIFICANT WEATHER
CONDITIONS ACCORDING TO STANDARD OPERATING PROCEDURES.
GRAPHICAL FORECASTS OF WEATHER HAZARDS OUT TO SEVEN DAYS
ARE DISPLAYED ON THE WORLD WIDE WEB AT:
WWW.WRH.NOAA.GOV/PENDLETON/CURRENTHAZARDS/HWO.HTML
ALL LETTERS IN THE ABOVE URL ARE LOWER CASE...EXCEPT THE H IN
CURRENTHAZARDS.The national radar mosaic for the moment the first event began.
2 heavy snow. Local standard time, as filed.
Snowfall of 9 inches 2NW Tollgate; 13.6 inches at High Ridge SnoTel; 12 inches 2NNW Meacham.
Snowfall of 16 inches at Lehman Hot Springs and 6 inches at Battle Mountain ODOT.
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, March 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: 17399, 17400.