Alert archive / Oregon / River Flood Warnings in 2011
River Flood Warning 20, NWS Pendleton, OR
NWS Pendleton, OR issued this river flood warning at Apr 5, 2011, 9:42 AM PDT for Wallowa County, Oregon; Asotin County, Washington. It took effect at Apr 5, 2011, 12:14 PM PDT. It was in force for 7 hr.
The area
The counties it named.
The facts
- Issued
- Apr 5, 2011, 9:42 AM PDT (16:42 UTC)
- In effect from
- Apr 5, 2011, 12:14 PM PDT
- Expired
- Apr 5, 2011, 6:52 PM PDT
- In force
- 7 hr
- Issued by
- NWS Pendleton, OR
- Flood severity
- Minor
Counties Wallowa County, OR, Asotin County, WA
The radar
The Pendleton radar (KPDT), 131 km from the middle of the area, began a volume at 16:39 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
The river
Written for the forecast point Grande Ronde River at Troy (TRYO3).
- Action stage
- 8 ft
- Minor stage
- 10 ft
- Moderate stage
- 11 ft
- Major stage
- 12 ft
This gauge today: stage, forecast and historic crests
Stage from the USGS instantaneous record for site 13333000, one reading an hour, from a day before the product to a day after it ended. Flood stages are today's.
What forecasters said that day
The local office's own words before this river flood warning went out, 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 this river flood warning went out at Apr 5, 7:49 AM PDT, 1 hour 53 minutes earlier.
Area forecast discussion, Apr 5, 7:49 AM PDT, 1 hour 53 minutes before
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</html>Hazardous weather outlook, Apr 5, 5:30 AM PDT, 4 hours 12 minutes before
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Special weather statement, Apr 5, 3:50 AM PDT, 5 hours 52 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE PENDLETON OR 350 AM PDT TUE APR 5 2011 ORZ041-042-044-049-050-502-503-505>509-WAZ024-026>030-520-521- 052300- EASTERN COLUMBIA RIVER GORGE OF OREGON-NORTH CENTRAL OREGON- LOWER COLUMBIA BASIN OF OREGON-GRANDE RONDE VALLEY-WALLOWA COUNTY- NORTHERN BLUE MOUNTAINS OF OREGON- SOUTHERN BLUE MOUNTAINS OF OREGON-JOHN DAY BASIN-OCHOCO- JOHN DAY HIGHLANDS- FOOTHILLS OF THE NORTHERN BLUE MOUNTAINS OF OREGON- FOOTHILLS OF THE SOUTHERN BLUE MOUNTAINS OF OREGON- EAST SLOPES OF THE OREGON CASCADES- EASTERN COLUMBIA RIVER GORGE OF WASHINGTON-KITTITAS VALLEY- YAKIMA VALLEY-LOWER COLUMBIA BASIN OF WASHINGTON- FOOTHILLS OF THE BLUE MOUNTAINS OF WASHINGTON- NORTHWEST BLUE MOUNTAINS OF WASHINGTON- EAST SLOPES OF THE WASHINGTON CASCADES-SIMCOE HIGHLANDS- INCLUDING THE CITIES OF...ARLINGTON...THE DALLES...DUFUR... MADRAS...MAUPIN...MORO...PRINEVILLE...REDMOND...BOARDMAN... HERMISTON...IONE...COVE...ELGIN...LA GRANDE...UNION... ENTERPRISE...JOSEPH...WALLOWA...MEACHAM...TOLLGATE...LONG CREEK... NORTH POWDER...UKIAH...DAYVILLE...JOHN DAY...MITCHELL... MONUMENT...SPRAY...BROTHERS...PAULINA...PRAIRIE CITY...SENECA... ATHENA...PENDLETON...PILOT ROCK...HEPPNER...CONDON...FOSSIL... BEND...CAMP SHERMAN...LA PINE...SISTERS...SUNRIVER... WHITE SALMON...ELLENSBURG...THORP...NACHES...SUNNYSIDE... TOPPENISH...YAKIMA...CONNELL...PROSSER...TRI-CITIES...DAYTON... WAITSBURG...WALLA WALLA...SKI BLUEWOOD RESORT...APPLETON... CLE ELUM...CLIFFDELL...EASTON...ROSLYN...TROUT LAKE...BICKLETON... GOLDENDALE 350 AM PDT TUE APR 5 2011 ...UNSEASONABLY COOL AND WET WITH LOW SNOW LEVELS WEDNESDAY THROUGH THURSDAY... A LARGE UPPER LEVEL LOW PRESSURE SYSTEM WILL MOVE OVER WASHINGTON AND OREGON ON WEDNESDAY AND REMAIN STATIONARY THROUGH THURSDAY. THE AIR MASS WILL BECOME COLDER AND INCREASINGLY UNSTABLE DURING THIS TIME. THIS WILL RESULT IN LOWERING SNOW LEVELS...POSSIBLY DOWN TO THE COLUMBIA BASIN FLOOR BY LATE WEDNESDAY. AT THIS TIME...LITTLE TO NO ACCUMULATIONS ARE EXPECTED IN THE COLUMBIA BASIN. HOWEVER...SEVERAL INCHES OF SNOW ARE POSSIBLE OVER THE MOUNTAINS AND MOUNTAIN VALLEYS INCLUDING THE EAST SLOPES OF THE WASHINGTON CASCADES...CENTRAL OREGON...THE GRANDE RONDE VALLEY...THE JOHN DAY BASIN...AND THE WALLOWA VALLEY. AFTERNOON TEMPERATURES ON WEDNESDAY AND THURSDAY WILL BE AROUND 10 TO 15 DEGREES BELOW SEASONAL AVERAGE...AND OVERNIGHT TEMPERATURES WEDNESDAY NIGHT WILL BE BELOW FREEZING OVER MOST OF THE AREA. THOSE TRAVELING OVER SOUTH CENTRAL AND SOUTHEAST WASHINGTON AND CENTRAL AND NORTHEAST OREGON SHOULD BE PREPARED FOR WINTER DRIVING CONDITIONS WEDNESDAY THROUGH THURSDAY. OUTDOOR ENTHUSIASTS SHOULD BE PREPARED FOR UNSEASONABLY COOL CONDITIONS.
The office that day
Everything else NWS Pendleton, OR issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 5, 1:09 PM PDT | Winter Weather Advisory | PDT | Crook, Deschutes, Gilliam, Grant, Jefferson, Morrow and 5 more | 49 hr |
Nearby
River Flood Warnings in Oregon, 2011River Flood Warnings in Washington, 2011Every river flood warning in 2011
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; radar from the NEXRAD Level II archive; the gauge from the NWS water service and the USGS.