Alert archive / Oregon / River Flood Warnings in 2012

River Flood Warning 41, NWS Portland, OR

March 31, 2012Clackamas County, Marion County, Oregon

NWS Portland, OR issued this river flood warning at Mar 31, 2012, 10:32 AM PDT for Clackamas County, Marion County, Oregon. It took effect at Mar 31, 2012, 8:30 PM PDT. It was in force for 72 hr.

The area

The counties it named.

The facts

Issued: Mar 31, 2012, 10:32 AM PDT (17:32 UTC)
In effect from: Mar 31, 2012, 8:30 PM PDT
Expired: Apr 3, 2012, 8:21 PM PDT
In force: 72 hr
Issued by: NWS Portland, OR
Flood severity: Minor

Counties Clackamas County, OR, Marion County, OR

The radar

The Portland,OR radar (KRTX), 86 km from the middle of the area, began a volume at 17:31 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 Pudding River at Aurora (AURO3). The gauge peaked at 23.91 ft at Apr 1, 2012, 8:00 PM PDT.

Action stage: 21 ft
Minor stage: 22 ft
Moderate stage: 26 ft
Major stage: 29 ft

This gauge today: stage, forecast and historic crests

Stage from the USGS instantaneous record for site 14202000, 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 Portland, OR wrote its last area forecast discussion before this river flood warning went out at Mar 31, 9:10 AM PDT, 1 hour 22 minutes earlier.

Area forecast discussion, Mar 31, 9:10 AM PDT, 1 hour 22 minutes before

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Hazardous weather outlook, Mar 31, 6:27 AM PDT, 4 hours 5 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE PORTLAND OR
627 AM PDT SAT MAR 31 2012

ORZ009-014-WAZ023-011500-
WESTERN COLUMBIA RIVER GORGE-UPPER HOOD RIVER VALLEY-
627 AM PDT SAT MAR 31 2012

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF NORTHWEST
OREGON AND SOUTHWEST WASHINGTON.

.DAY ONE...TODAY AND TONIGHT

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION WILL NOT LIKELY BE NEEDED TODAY.

ORZ001>008-010-012-PZZ210-WAZ020>022-039-040-011500-
NORTH OREGON COAST-CENTRAL OREGON COAST-
COAST RANGE OF NORTHWEST OREGON-
CENTRAL COAST RANGE OF WESTERN OREGON-LOWER COLUMBIA-
GREATER PORTLAND METRO AREA-CENTRAL WILLAMETTE VALLEY-
SOUTH WILLAMETTE VALLEY-NORTHERN OREGON CASCADE FOOTHILLS-
CASCADE FOOTHILLS IN LANE COUNTY-COLUMBIA RIVER BAR-WILLAPA HILLS-
SOUTH WASHINGTON COAST-I-5 CORRIDOR IN COWLITZ COUNTY-
GREATER VANCOUVER AREA-SOUTH WASHINGTON CASCADE FOOTHILLS-
627 AM PDT SAT MAR 31 2012

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF NORTHWEST
OREGON...NORTHWEST OREGON AND SOUTHWEST WASHINGTON COASTAL WATERS
AND SOUTHWEST WASHINGTON.

.DAY ONE...TODAY AND TONIGHT

MODERATE TO HEAVY RAIN IS EXPECTED IN THE COAST RANGE THIS
MORNING...BRINGING RISES TO RIVERS AND STREAMS. SMALL STREAM
FLOODING IS ALSO POSSIBLE. MODERATE RAIN WILL SPREAD FURTHER INLAND
BEFORE TURNING TO SHOWERS WITH A FEW THUNDERSTORMS THIS AFTERNOON
AND TONIGHT. A FLOOD WATCH IS ALSO IN EFFECT TODAY. SEE THE
LATEST FLOOD PRODUCTS FOR MORE DETAIL.

.DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY

LIGHT ACCUMULATING SNOW IS POSSIBLE EARLY SUNDAY IN THE HIGHER
COAST RANGE AND FOOTHILL ELEVATIONS.

.SPOTTER INFORMATION STATEMENT...

WEATHER SPOTTERS ARE ENCOURAGED TO REPORT SIGNIFICANT WEATHER
CONDITIONS ACCORDING TO STANDARD OPERATING PROCEDURES.

ORZ011-013-WAZ019-011500-
NORTHERN OREGON CASCADES-CASCADES IN LANE COUNTY-
SOUTH WASHINGTON CASCADES-
627 AM PDT SAT MAR 31 2012

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF NORTHWEST
OREGON AND SOUTHWEST WASHINGTON.

.DAY ONE...TODAY AND TONIGHT

LOWERING SNOW LEVELS AND EXPECTED PRECIPITATION MAY BRING
SIGNIFICANT SNOW ACCUMULATION TO MOUNTAIN PASSES TONIGHT. SEE
WSWPQR FOR MORE DETAILS.

.DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY
SNOW LINGERS IN THE CASCADES THROUGH EARLY SUNDAY.

.SPOTTER INFORMATION STATEMENT...

WEATHER SPOTTERS ARE ENCOURAGED TO REPORT SIGNIFICANT WEATHER
CONDITIONS ACCORDING TO STANDARD OPERATING PROCEDURES.

PZZ250-255-270-275-011500-
COASTAL WATERS FROM CAPE SHOALWATER WA TO CASCADE HEAD OR OUT
10 NM-COASTAL WATERS FROM CASCADE HEAD TO FLORENCE OR OUT 10 NM-
WATERS FROM CAPE SHOALWATER WA TO CASCADE HEAD OR FROM 10 TO
60 NM-WATERS FROM CASCADE HEAD TO FLORENCE OR FROM 10 TO 60 NM-
627 AM PDT SAT MAR 31 2012

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF NORTHWEST
OREGON AND SOUTHWEST WASHINGTON COASTAL WATERS.

.DAY ONE...TODAY AND TONIGHT

A GALE WARNING IS IN EFFECT THROUGH THIS AFTERNOON.

.DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY

GALE FORCE WINDS ARE AGAIN POSSIBLE MONDAY INTO TUESDAY.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION WILL NOT LIKELY BE NEEDED TODAY.

In the hours before

Special weather statement, Mar 31, 6:47 AM PDT, 3 hours 45 minutes before

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The office that day

Everything else NWS Portland, OR issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Mar 30, 9:31 PM PDT	Areal Flood Advisory	PQR	Benton, Clackamas, Clatsop, Columbia, Lane, Lincoln and 7 more	12 hr
Mar 31, 3:44 AM PDT	Winter Weather Advisory	PQR		28 hr
Mar 31, 12:24 PM PDT	River Flood Warning	PQR	Washington	9 hr
Mar 31, 2:15 PM PDT	Gale Warning	PQR		19 hr
Mar 31, 2:15 PM PDT	Storm Watch	PQR		25 hr

Nearby

River Flood Warnings in Oregon, 2012 Every river flood warning in 2012

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.