Oregon, 2015Flooding in Oregon, December 9 to 10, 2015
December 9 to 10, 2015 · NWS PQR · 2 events in 2 counties and zones
A moist front produced heavy rain across Northwest Oregon closely following two other moist fronts on December 7th and December 8th. THe heavy rain resulted in additional flooding and land slides across the region.
Every event with a place to put it. Tap one for its entry below.
- Tornadoes
- Tropical storms and surge
- Floods
- Wind
- Hail
- Winter weather
- Heat and drought
- Cold
- Fire, smoke and dust
- Marine and coastal
- Other
Open the live radar over this ground
- Deaths
- 1
- Injuries
- 1
- Property damage
- $2.6 million
- Crop damage
- None recorded
- Events
- 2
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.
A moist front produced heavy rain across Northwest Oregon closely following two other moist fronts on December 7th and December 8th. THe heavy rain resulted in additional flooding and land slides across the region.
What forecasters said that day
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 Portland, OR wrote its last area forecast discussion before the first event at Dec 8, 8:46 PM PST, 6 hours 14 minutes earlier.
Area forecast discussion, Dec 8, 8:46 PM PST, 6 hours 14 minutes before
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE PORTLAND OR
845 PM PST TUE DEC 8 2015
.SYNOPSIS...ANOTHER FRONT WILL BRING RAIN AND WINDY CONDITIONS TO
THE REGION TONIGHT INTO WED...WITH ANOTHER ROUND OF RAIN AND WIND
LATER WED NIGHT AND THU. THEN COOLER AND SHOWERY FRI INTO THIS
WEEKEND...WITH SNOW LEVELS AT OR JUST BELOW THE CASCADES PASSES.
&&
.SHORT TERM...TONIGHT THROUGH FRIDAY...
NO BIG CHANGES. A FRONTAL SYSTEM EXTENDS FROM A LOW PRES CENTER OVER
THE GULF OF ALASKA DOWN THROUGH BRITISH COLUMBIA AND OFF THE PAC NW
COAST. MAIN BAROCLINIC ZONE THAT PUSHED INTO FAR NW CORNER OF OREGON
THIS AFTERNOON STALLED BY LATE AFTERNOON. BUT NOW IT IS LIFTING
SLOWLY NORTHWARD AS A WARM FRONT THIS EVENING. A SIGNIFICANT
SUBTROPICAL MOISTURE TAP IS FEEDING INTO THIS SYSTEM...WITH
PRECIPITABLE WATER VALUES OF 1.2 TO 1.3 INCHES. IMPRESSIVE WEST TO
SOUTHWEST MOISTURE TRANSPORT INTO SW WASHINGTON AND FAR NW OREGON IS
OCCURRING THIS AFTERNOON...AND IS BEING AIDED BY ISENTROPIC LIFT AND
DIVERGENCE AT THE NOSE OF A 150 KT JET OFFSHORE TO PRODUCE HEAVY
RAINFALL NORTH OF A LINE ROUGHLY FROM LINCOLN CITY THROUGH
MCMINNVILLE/AURORA AND UP AROUND MT HOOD. EXPECT THE RAINFALL AXIS TO
REMAIN NEARLY STATIONARY THROUGH THE EVENING...PERHAPS LIFTING A BIT
FURTHER NORTH LATE IN THE EVENING AS THE OFFSHORE SHORTWAVE
APPROACHES THE COAST. THE COLD FRONT WILL THEN PIVOT TO MORE OF A
NORTH-SOUTH ORIENTATION AND MOVE ONSHORE OVERNIGHT...RESULTING IN THE
HEAVY RAIN SPREADING SOUTH THROUGH THE ENTIRE FCST REGION. THE FRONT
WILL MOVE EAST OF THE CASCADES BY EARLY WED MORNING.
EXPECT THE HEAVIEST RAINFALL WITH TONIGHTS FRONTAL SYSTEM TO BE
FOCUSED OVER THE NORTHERN HALF OF THE FCST AREA...PARTICULARLY THE
WILLAPA HILLS/N OREGON COAST RANGE AND THE S WASHINGTON CASCADES...
WHERE 3 TO 7 INCHES OF RAIN ARE EXPECTED. RAINFALL OVER THE NORTHERN
INTERIOR LOWLANDS...INCLUDING THE PORTLAND/VANCOUVER METRO AREA...ARE
EXPECTED TO BE AROUND 1 TO 3 INCHES. WILL CONTINUE THE URBAN AND
SMALL STREAM FLOODING ADVISORY FOR THE NORTHERN COASTAL ZONES AND
INTERIOR LOWLANDS...AS SIGNIFICANT PONDING OF WATER IS LIKELY TO
CAUSE TRAVEL IMPACTS AROUND THE EVENING COMMUTE. IN
ADDITION...NUMEROUS RIVERS ARE IN OR ARE EXPECTED TO REACH FLOOD
STAGE TONIGHT INTO WED. RAINFALL TOTALS WILL BE LOWER OVER THE
SOUTHERN HALF OF THE FCST AREA...ALTHOUGH STILL SIGNIFICANT...AS THE
AXIS OF HEAVIER RAIN WILL BE FASTER TO MOVE THROUGH THESE AREAS.
WINDS ARE NOW PICKING UP AGAIN. WINDS ON THE OREGON COAST HAVE BEEN
GUSTING 55 TO 75 MPH THIS EVENING...AND WILL CONTINUE OVERNIGHT AND
SPREAD BACK NORTHWARD AS WELL. FURTHER INLAND...WINDS INCREASING AS
WELL. GENERALLY GUSTS OVER INTERIOR LOWLANDS 25 TO 35 MPH SOUTH OF
SALEM...AND 35 TO 50 MPH NORTH OF SALEM. STRONGEST WINDS HAVE BEEN ON
VERY EXPOSED RIDGES...SUCH AS 61 MPH ON CHEHALEM MTNS NEAR NEWBURG
AND 55 MPH ON MT SCOTT IN SOUTHEAST PORTLAND. WITH SATURATE
SOILS...SUCH WINDS WILL MAKE SOME TREES LEANS...AND POSSIBLY FALL. BE
PREPARED FOR SCATTERED POWER OUTAGES TONIGHT. WILL MAINTAIN THE
CURRENT HIGH WIND WARNINGS FOR THE COAST..COAST RANGE/WILLAPA... AND
THE CASCADES AS WELL AS THE WIND ADVISORY FOR THE INTERIOR LOWLANDS.
WINDS WILL SUBSIDE WED AM ONCE THE COLD FRONT PUSHES ACROSS THE
REGION.
EXPECT SHOWERS TO LINGER WED IN THE COLDER AND MODESTLY UNSTABLE POST
FRONTAL AIR MASS. SNOW LEVELS...WHICH WILL BE WELL ABOVE 6000 FT
TONIGHT...SHOULD DROP DOWN TO THE HIGHER CASCADE PASSES WED. EXPECT
SEVERAL INCHES OF SNOW DOWN TO THE PASSES DURING THE DAY...BUT TOTALS
SHOULD REMAIN SUB ADVISORY.
ANOTHER LOW PRES SYSTEM WILL FORM ALONG THE BAROCLINIC ZONE ON
WED...PUSHING ONTO THE BRITISH COLUMBIA COAST ON THU. THE ASSOCIATED
FRONTAL SYSTEM WILL BRING ANOTHER ROUND OF RAIN AND GUSTY COASTAL
WINDS ON WED NIGHT INTO THU MORNING. WINDS CURRENTLY APPEAR TO REMAIN
JUST BELOW HIGH WIND CRITERIA. THE PARENT UPPER LEVEL TROUGH WILL
MOVE ONSHORE AND THU NIGHT AND FRI...BRINGING ADDITIONAL SHOWER
ACTIVITY. SNOW LEVELS SHOULD REMAIN BETWEEN 3500-4500 K FEET DURING THIS
TIME...AND EXPECT THE CASCADES TO PICK UP SOME FAIRLY SIGNIFICANT
SNOWFALL TOTALS. AREAS ABOVE 5000 FT MAY PICK UP A FOOT OR MORE
THROUGH THU NIGHT. PYLE
.LONG TERM...FRIDAY NIGHT THROUGH TUESDAY...THE ACTIVE WEATHER
PATTERN WILL LIKELY CONTINUE AS A SERIES OF SYSTEMS PUSH ACROSS THE
PACIFIC NORTHWEST. MODELS CONTINUE TO BRING MORE RAIN AND CASCADE
SNOW TO THE REGION THIS WEEKEND. THE COAST RANGE COULD ALSO GET INTO
THE MIX WITH SNOW LEVELS FORECASTED TO LOWER TO AROUND 2500 FT.
MODELS DIVERGE EARLY NEXT WEEK SO CONFIDENCE IN THE FORECAST IS LOW.
AS SUCH...HAVE TRENDED THE FORECAST TOWARDS A BLEND OF THE VARIOUS
OPERATIONAL MODELS STARTING LATE SUNDAY.
&&
.AVIATION...VERY MOIST SOUTHWEST FLOW ALOFT IN CONJUNCTION WITH
STRONG SOUTH LOW-LEVEL FLOW THROUGH TONIGHT WILL RESULT IN LESS-THAN-
OPTIMUM FLYING CONDITIONS...ESPECIALLY FOR GENERAL AVIATION USERS.
HIGHER TERRAIN WILL BE OBSCURED THROUGH WED MORNING. EXPECT
LITTLE CHANGE IN OVERALL CONDITIONS ALONG THE COAST THROUGH AT
LEAST 12Z WED. LATEST GUIDANCE SHOWS RAIN INTENSIFYING ALONG THE S
WA AND N OREGON COAST LATE THIS AFTERNOON OR EARLY EVENING. COLD
FRONT MOVES INTO THE SW WA LOWLANDS TO NEAR KONP AROUND 06Z-09Z
WED THEN TO THE CASCADES AROUND 12Z-15Z WED.
KPDX AND APPROACHES...A FRONTAL RAIN BAND WILL SHIFT SOUTH ACROSS
THE TERMINAL BETWEEN 08Z AND 12Z WED. EXPECT PREDOMINANTLY IFR
VIS DUE TO HEAVY RAIN BETWEEN 08Z AND 12Z WED. IMPROVING
CONDITIONS AFTER 15Z WED IN THE POST-FRONTAL AIR MASS. NEUWEISH
&&
.MARINE...GALE FORCE WINDS ACROSS THE WATERS...PRIMARILY SOUTH OF
CAPE LOOKOUT WILL CONTINUE THROUGH THE OVERNIGHT HOURS BEFORE A
COLD FRONT PUSHES ASHORE AND PRESSURE GRADIENTS GRADUALLY RELAX
WEDNESDAY MORNING. THE STRONG GALE FORCE WINDS ACROSS THE CENTRAL
OREGON WATERS LATE THIS EVENING WILL RESULT IN SEAS INCREASING
ACROSS THIS REGION...LIKELY CLIMBING INTO THE MID TO UPPER TEENS.
THESE HIGHER SEAS WILL PERSIST THROUGH WEDNESDAY EVENING BEFORE
RELAXING WEDNESDAY NIGHT.
THE NEXT MAJOR STORM SYSTEM WILL STRENGTHEN RAPIDLY OVER THE NEXT
24 HOURS AND MOVE TOWARDS THE WATERS BETWEEN HAIDA GWAII AND
VANCOUVER ISLAND. A STRONG FRONTAL OCCLUSION LOOKS TO MOVE
NORTHEASTWARD ACROSS THE WATERS SOME TIME WEDNESDAY NIGHT OR
THURSDAY...WHICH WILL LIKELY BRING GALE FORCE OR POSSIBLY LOW END
STORM FORCE WIND GUSTS. WILL LET THE MID SHIFT INGEST ONE MORE SET
OF MODELS BEFORE ISSUING WATCHES/WARNINGS FOR THIS SYSTEM. A
WEAKENED VERSION OF THIS IMPRESSIVE LOW PRESSURE SYSTEM MAY END UP
MOVING TOWARDS THE WASHINGTON COAST LATER THURSDAY...BUT
CONFIDENCE STILL REMAINS RELATIVELY LOW DUE TO POOR MODEL
CONSISTENCY.
THIS AFOREMENTIONED STORM SYSTEM WILL PRODUCE A LARGE 25 TO 30 FT
WESTERLY SWELL THAT WILL BRING HIGH SURF CONDITIONS AND POSSIBLY
COASTAL FLOODING ISSUES LATER THURSDAY. COASTAL FLOOD WATCH COVERS
THIS WELL. HIGH RIVER LEVELS...HIGH TIDES AND TIDAL ANOMALIES
SHOULD SET THE STAGE FOR SOME TIDAL OVERFLOW FLOODING LATE
WEDNESDAY MORNING AS WELL. /NEUMAN
&&
.PQR WATCHES/WARNINGS/ADVISORIES...
OR...FLOOD WATCH THROUGH THURSDAY AFTERNOON FOR CENTRAL COAST RANGE
OF WESTERN OREGON-CENTRAL COLUMBIA RIVER GORGE-CENTRAL
OREGON COAST-CENTRAL WILLAMETTE VALLEY-COAST RANGE OF
NORTHWEST OREGON-GREATER PORTLAND METRO AREA-LOWER COLUMBIA-
NORTH OREGON COAST-NORTHERN OREGON CASCADE FOOTHILLS-
NORTHERN OREGON CASCADES-SOUTH WILLAMETTE VALLEY-UPPER HOOD
RIVER VALLEY-WESTERN COLUMBIA RIVER GORGE.
HIGH WIND WARNING UNTIL 4 AM PST WEDNESDAY FOR CASCADES IN LANE
COUNTY-CENTRAL COAST RANGE OF WESTERN OREGON-CENTRAL OREGON
COAST-COAST RANGE OF NORTHWEST OREGON-NORTH OREGON COAST-
NORTHERN OREGON CASCADES.
WIND ADVISORY UNTIL 4 AM PST WEDNESDAY FOR CENTRAL WILLAMETTE
VALLEY-GREATER PORTLAND METRO AREA.
COASTAL FLOOD WATCH FROM THURSDAY MORNING THROUGH FRIDAY MORNING
FOR CENTRAL OREGON COAST-NORTH OREGON COAST.
COASTAL FLOOD ADVISORY FROM 8 AM TO 1 PM PST WEDNESDAY FOR
CENTRAL OREGON COAST-NORTH OREGON COAST.
WA...FLOOD WATCH THROUGH THURSDAY AFTERNOON FOR CENTRAL COLUMBIA
RIVER GORGE-GREATER VANCOUVER AREA-I-5 CORRIDOR IN COWLITZ
COUNTY-SOUTH WASHINGTON CASCADE FOOTHILLS-SOUTH WASHINGTON
CASCADES-SOUTH WASHINGTON COAST-WESTERN COLUMBIA RIVER
GORGE-WILLAPA HILLS.
HIGH WIND WARNING UNTIL 4 AM PST WEDNESDAY FOR SOUTH WASHINGTON
CASCADES-SOUTH WASHINGTON COAST-WILLAPA HILLS.
WIND ADVISORY UNTIL 4 AM PST WEDNESDAY FOR GREATER VANCOUVER
AREA.
COASTAL FLOOD WATCH FROM THURSDAY MORNING THROUGH FRIDAY MORNING
FOR SOUTH WASHINGTON COAST.
COASTAL FLOOD ADVISORY FROM 8 AM TO 1 PM PST WEDNESDAY FOR SOUTH
WASHINGTON COAST.
PZ...GALE WARNING UNTIL 10 AM PST WEDNESDAY FOR COASTAL WATERS FROM
CAPE SHOALWATER WA TO FLORENCE OR OUT 60 NM.
SMALL CRAFT ADVISORY FOR ROUGH COLUMBIA RIVER BAR UNTIL 4 AM PST
THURSDAY.
&&
&&
.PQR WATCHES/WARNINGS/ADVISORIES...
OR...FLOOD WATCH THROUGH THURSDAY AFTERNOON FOR CENTRAL COAST RANGE
OF WESTERN OREGON-CENTRAL COLUMBIA RIVER GORGE-CENTRAL
OREGON COAST-CENTRAL WILLAMETTE VALLEY-COAST RANGE OF
NORTHWEST OREGON-GREATER PORTLAND METRO AREA-LOWER COLUMBIA-
NORTH OREGON COAST-NORTHERN OREGON CASCADE FOOTHILLS-
NORTHERN OREGON CASCADES-SOUTH WILLAMETTE VALLEY-UPPER HOOD
RIVER VALLEY-WESTERN COLUMBIA RIVER GORGE.
HIGH WIND WARNING UNTIL 4 AM PST WEDNESDAY FOR CASCADES IN LANE
COUNTY-NORTHERN OREGON CASCADES.
WIND ADVISORY UNTIL 4 AM PST WEDNESDAY FOR CENTRAL WILLAMETTE
VALLEY-GREATER PORTLAND METRO AREA.
HIGH WIND WARNING UNTIL 4 AM PST WEDNESDAY FOR CENTRAL COAST
RANGE OF WESTERN OREGON-CENTRAL OREGON COAST-COAST RANGE OF
NORTHWEST OREGON-NORTH OREGON COAST.
COASTAL FLOOD WATCH FROM THURSDAY MORNING THROUGH FRIDAY
MORNING FOR CENTRAL OREGON COAST-NORTH OREGON COAST.
COASTAL FLOOD ADVISORY FROM 8 AM TO 1 PM PST WEDNESDAY FOR
CENTRAL OREGON COAST-NORTH OREGON COAST.
WA...FLOOD WATCH THROUGH THURSDAY AFTERNOON FOR CENTRAL COLUMBIA
RIVER GORGE-GREATER VANCOUVER AREA-I-5 CORRIDOR IN COWLITZ
COUNTY-SOUTH WASHINGTON CASCADE FOOTHILLS-SOUTH WASHINGTON
CASCADES-SOUTH WASHINGTON COAST-WESTERN COLUMBIA RIVER
GORGE-WILLAPA HILLS.
HIGH WIND WARNING UNTIL 4 AM PST WEDNESDAY FOR SOUTH WASHINGTON
CASCADES.
WIND ADVISORY UNTIL 4 AM PST WEDNESDAY FOR GREATER VANCOUVER
AREA.
HIGH WIND WARNING UNTIL 4 AM PST WEDNESDAY FOR SOUTH WASHINGTON
COAST-WILLAPA HILLS.
COASTAL FLOOD WATCH FROM THURSDAY MORNING THROUGH FRIDAY
MORNING FOR SOUTH WASHINGTON COAST.
COASTAL FLOOD ADVISORY FROM 8 AM TO 1 PM PST WEDNESDAY FOR
SOUTH WASHINGTON COAST.
PZ...GALE WARNING UNTIL 10 AM PST WEDNESDAY FOR COASTAL WATERS FROM
CAPE SHOALWATER WA TO FLORENCE OR OUT 60 NM.
SMALL CRAFT ADVISORY FOR ROUGH COLUMBIA RIVER BAR UNTIL 4 AM
PST THURSDAY.
&&
INTERACT WITH US VIA SOCIAL MEDIA
WWW.FACEBOOK.COM/NWSPORTLAND
WWW.TWITTER.COM/NWSPORTLAND
THIS DISCUSSION IS FOR NORTHWEST OREGON AND SOUTHWEST WASHINGTON
FROM THE CASCADE CREST TO 60 NAUTICAL MILES OFFSHORE. THE AREA IS
COMMONLY REFERRED TO AS THE FORECAST AREA.In the hours before
Local storm report, Dec 8, 9:12 PM PST, 5 hours 48 minutes before
PRELIMINARY LOCAL STORM REPORT...CORRECTED
NATIONAL WEATHER SERVICE PORTLAND OR
912 PM PST TUE DEC 08 2015
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0731 PM DEBRIS FLOW 12 NW DOWNTOWN PORTLAND 45.64N 122.86W
12/08/2015 MULTNOMAH OR DEPT OF HIGHWAYS
LANDSLIDE HAS CLOSED BOTH EASTBOUND LANES OF US 30...JUST
TO EAST OF ST JOHNS BRIDGE. MAJOR DELAYS...AS ONLY ONE OF
WEST BOUND LANES REMAIN OPEN.
0740 PM DEBRIS FLOW 3 E RAINIER 46.09N 122.88W
12/08/2015 COWLITZ WA DEPT OF HIGHWAYS
LANDSLIDE HAS CLOSED US HWY 30 AT MILEPOST 44.
0756 PM NON-TSTM WND GST LINCOLN CITY 44.97N 124.01W
12/08/2015 M58.00 MPH LINCOLN OR MESONET
0756 PM HIGH SUST WINDS NEWPORT 44.63N 124.05W
12/08/2015 E45.00 MPH LINCOLN OR DEPT OF HIGHWAYS
ON US 101 YAQUINA BAY BRIDGE... SUSTAINED 40 TO 45 MPH.
0800 PM TSTM WND DMG TILLAMOOK 45.46N 123.84W
12/08/2015 TILLAMOOK OR COUNTY OFFICIAL
TREES DOWN AND POWER OUTAGES DUE TO HIGH WINDS SCATTERED
AROUND TILLAMOOK COUNTY
0800 PM NON-TSTM WND GST 13 N FLORENCE 44.17N 124.10W
12/08/2015 M75.00 MPH LANE OR MESONET
SUSTAINED 45 TO 55 MPH. GUSTS TO 75 MPH. AT SEA LION
CAVES.
0800 PM FLOOD 13 ESE PACIFIC CITY 45.13N 123.71W
12/08/2015 YAMHILL OR DEPT OF HIGHWAYS
OREGON ROUTE 22 REMAINS CLOSED DUE TO EROSION OF HIGHWAY
DURING HEAVY RAIN.
0800 PM FLOOD VERNONIA 45.86N 123.18W
12/08/2015 COLUMBIA OR COUNTY OFFICIAL
EVACUATING HOMES IN VERNONIA DUE TO FLOODING...POSSIBLY
DUE TO A COMBINATION OF HIGH FLOWS ON ROCK CREEK AND
NEHALEM RIVER...LATTER AT APPROXIMATELY 12 FT...BUT
RISING RAPIDLY. EMERGENCY OPERATION CENTER BEING
IMPLEMENTED BY THE COUNTY.
0810 PM FLOOD 7 E SHERIDAN 45.10N 123.25W
12/08/2015 YAMHILL OR DEPT OF HIGHWAYS
HIGH WATER HAS CLOSED OREGON ROUTE 153 FROM MILEPOSTS 1
TO 6. THIS IS JUST EAST OF JCT OF 153 WITH OREGON RTE 18.
0815 PM NON-TSTM WND GST 1 W FLORENCE 43.99N 124.12W
12/08/2015 M64.00 MPH LANE OR OFFICIAL NWS OBS
SUSTAINED 35 TO 45 MPH. GUSTS TO 64 MPH. AT THE SIUSLAW
RIVER JETTY.
0829 PM FLOOD ROCKAWAY BEACH 45.62N 123.94W
12/08/2015 TILLAMOOK OR DEPT OF HIGHWAYS
DUE TO HIGH WATER AND LANDSLIDE DEBRIS...US 101 CLOSED
BETWEEN MILEPOSTS 52 AND 55.
0843 PM FLOOD ROCKAWAY BEACH 45.62N 123.94W
12/08/2015 TILLAMOOK OR LAW ENFORCEMENT
HWY 101 SHUT DOWN DUE TO FLOODING AND SLIDE.
0900 PM NON-TSTM WND GST 1 SSW NEWPORT 44.61N 124.07W
12/08/2015 M59.00 MPH LINCOLN OR C-MAN STATION
0900 PM NON-TSTM WND DMG CLACKAMAS 45.41N 122.55W
12/08/2015 CLACKAMAS OR UTILITY COMPANY
POWER OUTAGES CONTINUE ACROSS THE NORTH WILLAMETTE
VALLEY. AS OF 9 PM...PGE REPORTING JUST OVER 5000
CUSTOMERS WITHOUT POWER. MOST ARE IN CLACKAMAS COUNTY.
&&
CROCKEYFlood, Columbia
- When
- December 9, 3:00 AM PST to December 10, 1:00 PM PST
- Where
- Columbia County, Vernonia to Clatskanie
- Cause
- Heavy Rain
- Deaths
- 1 direct, 0 indirect
- Injuries
- 1 direct, 0 indirect
- Property damage
- $2.3 million
- Reported by
- County Official
- Coordinates
- 45.850, -123.200
The Nehalem River near Vernonia flooded Vernonia resulting in evacuation of residents and damage to many buildings and vehicles. A bridge washed out on TImber Road and isolated the Glenwood Community. There was also significant flooding in St Helens, where 17 homes were evacuated, and many roads were damaged and closed. Highway 30 and the business district in Rainier also flooded. An elderly couple drove around a barrier of a closed road, and was swept away by high water. The man escaped through the sunroof of the vehicle, but the woman ended up drowning. Flooding and landslides cut off Western Columbia County.
Flood, Washington
- When
- December 9, 8:00 AM PST to December 10, 7:00 AM PST
- Where
- Washington County, 1 mi S of Dilley to 1 mi E of Dilley
- Cause
- Heavy Rain
- Property damage
- $283,000
- Reported by
- Other Federal Agency
- Coordinates
- 45.465, -123.120
Heavy rain resulted in flooding of the Tualatin River near Dilley. High water flooded local businesses and residences.
| Event | Date | Age | Sex | Where | Kind |
|---|
| Flood, Columbia | 2015-12-09 | 72 | Female | Vehicle/Towed Trailer | Direct |
- Flood
- Flooding that develops more slowly than a flash flood: rivers leaving their banks, or water standing over land for an extended time.
After NWS Directive 10-1605, the rules offices file Storm Data by.
- Heavy Snow and High Wind in California, December 9 to 11, 20151 death · $25,000 · 50 kt wind · 5 events
- Flood in Washington, December 9 to 10, 2015$1.8 million · 1 event
- High Wind and Strong Wind in Washington, December 9, 2015$50,000 · 2 events
- Dense Fog in California, December 9 to 10, 20158 events
- Dense Fog in Virginia, December 9, 20157 events
- Dense Fog in Virginia, December 9 to 10, 20156 events
- High Wind in Montana, December 9 to 10, 201561 kt wind · 4 events
- High Wind in Oregon, December 9 to 10, 201576 kt wind · 4 events
- Coastal Flood and Hail in California, December 9 to 11, 20151 in hail · 4 events
- Dense Fog in West Virginia, December 9, 20152 events
- High Wind in Montana, December 9, 2015$2,000 · 65 kt wind · 2 events
- High Wind in California, December 9, 201559 kt wind · 1 event
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: 612029, 612030.