THE HYDROMETEOROLOGICAL PREDICTION CENTER

CAMP SPRINGS, MD


STORM SUMMARY MESSAGE



 
STORM SUMMARY NUMBER 4 FOR HEAVY RAIN IN PACIFIC NORTHWEST
NWS HYDROMETEOROLOGICAL PREDICTION CENTER CAMP SPRINGS MD
700 PM PST FRI DEC 30 2005

...HEAVY PRECIPITATION STILL FALLING ACROSS PORTIONS OF THE
PACIFIC NORTHWEST...NORTHERN CALIFORNIA AND THE NORTHERN GREAT
BASIN...

A POTENT AND MOISTURE LADEN PACIFIC WEATHER SYSTEM IS CONTINUING
TO MOVE ACROSS THE NORTHWESTERN U.S. WITH LOCAL RADARS AND SURFACE
OBSERVATIONS INDICATING THAT SIGNIFICANT PRECIPITATION IS NOW
FALLING ACROSS PORTIONS OF THE PACIFIC NORTHWEST...NORTHERN
CALIFORNIA...THE NORTHERN GREAT BASIN...AND PARTS OF THE NORTHERN
ROCKY MOUNTAINS.

FLOOD WATCHES AND WARNINGS ARE IN EFFECT FOR MOST OF NORTHERN
CALIFORNIA...WESTERN NEVADA...WESTERN OREGON...AND PORTIONS OF
SOUTHWEST WASHINGTON.  A FLASH FLOOD WATCH HAS BEEN POSTED FOR
PORTIONS OF SANTA BARBARA...VENTURA...AND LOS ANGELES COUNTIES IN
SOUTHERN CALIFORNIA. 

SNOW ADVISORIES HAVE BEEN POSTED FOR THE WESTERN SLOPES AND PASSES
OF THE CENTRAL AND SOUTHERN WASHINGTON CASCADES.  SNOW ADVISORIES
ARE ALSO IN EFFECT FOR SISKIYOU COUNTY IN NORTHERN CALIFORNIA...AS
WELL AS THE CLEARWATER MOUNTAINS AND THE SNAKE RIVER PLAIN IN
EASTERN IDAHO...THE WEST FACING RANGES OF THE ROCKY MOUNTAINS IN
NORTHWEST MONTANA...AND THE MOUNTAINS AND VALLEYS IN FAR WESTERN
WYOMING.  

HEAVY SNOW WARNINGS ARE IN EFFECT FOR WESTERN SISKIYOU COUNTY IN
NORTHERN CALIFORNIA...ELEVATIONS ABOVE 5000 FEET IN EASTERN OREGON
AND SOUTHWEST IDAHO...PORTIONS OF CENTRAL AND EASTERN IDAHO...THE
EASTERN SLOPES OF THE CENTRAL CASCADES IN WASHINGTON...AND IN
ELEVATIONS ABOVE 2500 FEET IN THE MOUNTAINS OF NORTHEAST
WASHINGTON INTO THE IDAHO PANHANDLE. A WINTER STORM WARNING IS IN
EFFECT FOR THE SIERRA NEVADA RANGE IN CALIFORNIA.

SNOW AND BLOWING SNOW ADVISORIES ARE IN EFFECT FOR THE WASATCH
RANGE AND WESTERN UINTA MOUNTAINS IN NORTHERN UTAH AND FOR HIGH
ELEVATIONS IN NORTHWEST COLORADO.   

THE HEAVIEST RAINFALL THROUGH SATURDAY SHOULD FALL ACROSS
NORTHWEST CALIFORNIA...EXTREME SOUTHWEST OREGON AND THE NORTHERN
AND CENTRAL SIERRA WHERE RAINFALL AMOUNTS OF 6 TO 8 INCHES ARE
EXPECTED. THE CASCADES AND HIGHER ELEVATIONS OF THE NORTHERN AND
CENTRAL SIERRA SHOULD SEE HEAVY SNOW ACCUMULATIONS. HEAVY SNOW
WILL ALSO BE LIKELY IN PORTIONS OF THE NORTHERN ROCKY MOUNTAINS
FROM NORTHERN IDAHO AND WESTERN MONTANA TO NORTHERN UTAH.  

...SELECTED 24 HOUR RAINFALL AMOUNTS...

WASHINGTON...

STAMPEDE PASS................1.48 INCHES    400 PM PST
HOQUIAM/BOWERMAN.............1.43 INCHES    400 PM PST
BREMERTON NTNL...............1.31 INCHES    400 PM PST
SANDERSON FIELD..............1.24 INCHES    400 PM PST
TOLEDO WINLOCK...............1.03 INCHES    400 PM PST

OREGON...

WILLIAMS.....................4.00 INCHES    502 PM PST
CENTRAL POINT................3.47 INCHES    520 PM PST
IDLEYLD PARK.................3.32 INCHES    800 PM PST
ASTORIA/CLATSOP..............3.06 INCHES    400 PM PST
CORVALLIS....................3.05 INCHES    400 PM PST
MYRTLE POINT.................2.96 INCHES    458 PM PST
SELMA........................2.87 INCHES    317 PM PST
MURPHY.......................2.72 INCHES    445 PM PST
COQUILLE.....................2.65 INCHES    459 PM PST
SEXTON SUMMIT................2.62 INCHES    400 PM PST
ROSEBURG.....................2.55 INCHES    400 PM PST
SALEM/MCNARY.................2.39 INCHES    400 PM PST
COOS BAY.....................2.32 INCHES    541 PM PST
CRATER LAKE..................2.10 INCHES   1100 AM PST

CALIFORNIA...

WILLOW CREEK.................4.90 INCHES    400 PM PST
ELK VALLEY...................4.32 INCHES   1100 AM PST
ORLEANS......................4.09 INCHES    400 PM PST
HAPPY CAMP...................4.04 INCHES    527 PM PST
DUNSMUIR.....................3.00 INCHES    520 PM PST
HONEYDEW.....................2.76 INCHES   1100 AM PST
SCOTIA.......................2.64 INCHES    400 PM PST
GASQUET......................2.60 INCHES   1100 AM PST
GIRARD.......................2.36 INCHES   1100 AM PST
UKIAH........................2.25 INCHES    400 PM PST
COTTONWOOD CREEK.............2.16 INCHES   1100 AM PST
TAYLOR RIDGE.................2.00 INCHES   1100 AM PST
CRESCENT CITY................2.00 INCHES    400 PM PST


...SELECTED STORM SNOWFALL TOTALS...

OREGON...

SUMPTER......................13.0 INCHES   1045 AM PST
HALFWAY......................12.0 INCHES   1045 AM PST

IDAHO...

PINE.........................24.0 INCHES    521 PM PST
BURLEY.......................18.0 INCHES    512 PM PST
MACKAY.......................12.0 INCHES    445 PM PST

THE NEXT STORM SUMMARY WILL BE ISSUED AT 100 AM PST BY THE
HYDROMETEOROLOGICAL PREDICTION CENTER. FOR ADDITIONAL
INFORMATION...PLEASE REFER TO STATEMENTS AND WARNINGS ISSUED BY
THE LOCAL NATIONAL WEATHER SERVICE OFFICES.

TRIMARCO





Last Updated: 956 PM EST FRI DEC 30 2005