Alert archive / California / River Flood Warnings in 2010

River Flood Warning 4, NWS San Diego, CA

December 21, 2010San Diego County, California

NWS San Diego, CA issued this river flood warning at Dec 21, 2010, 6:38 AM PST for San Diego County, California. It took effect at Dec 21, 2010, 12:20 PM PST. It was in force for .

The area

The counties it named.

The facts

Issued: Dec 21, 2010, 6:38 AM PST (14:38 UTC)
In effect from: Dec 21, 2010, 12:20 PM PST
Expired: Dec 21, 2010, 9:30 AM PST
In force
Issued by: NWS San Diego, CA
Flood severity: Minor

County San Diego County, CA

The radar

The San Diego radar (KNKX), 28 km from the middle of the area, began a volume at 14:39 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 San Diego River at Fashion Valley (FSNC1).

Action stage: 7.5 ft
Minor stage: 10 ft
Moderate stage: 13.5 ft
Major stage: 16.5 ft

This gauge today: stage, forecast and historic crests

Stage from the USGS instantaneous record for site 11023000, 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 San Diego, CA wrote its last area forecast discussion before this river flood warning went out at Dec 21, 5:15 AM PST, 1 hour 23 minutes earlier.

Area forecast discussion, Dec 21, 5:15 AM PST, 1 hour 23 minutes before

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Hazardous weather outlook, Dec 21, 5:50 AM PST, 48 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE SAN DIEGO CA
550 AM PST TUE DEC 21 2010

CAZ042-043-048-050-055>058-060>062-221400-
ORANGE COUNTY COASTAL AREAS-
SAN DIEGO COUNTY COASTAL AREAS-
SAN BERNARDINO AND RIVERSIDE COUNTY VALLEYS-THE INLAND EMPIRE-
SAN DIEGO COUNTY VALLEYS-
SAN BERNARDINO COUNTY MOUNTAINS-
RIVERSIDE COUNTY MOUNTAINS-
SANTA ANA MOUNTAINS AND FOOTHILLS-
SAN DIEGO COUNTY MOUNTAINS-
APPLE AND LUCERNE VALLEYS-
COACHELLA VALLEY-
SAN DIEGO COUNTY DESERTS-
550 AM PST TUE DEC 21 2010

THIS HAZARDOUS WEATHER OUTLOOK IS FOR ALL OF EXTREME SOUTHWESTERN
CALIFORNIA.

.DAY ONE...TODAY AND TONIGHT

FLASH FLOOD WATCH THROUGH WEDNESDAY AFTERNOON. SEE LAXFFASGX.
WINTER WEATHER ADVISORY AND WINTER STORM WARNING FOR THE MOUNTAINS.
SEE LAXWSWSGX.

SCATTERED THUNDERSTORMS WITH SMALL HAIL...WATERSPOUTS...AND ISOLATED
TORNADOES ARE POSSIBLE LATE TONIGHT.

STRONG GUSTY WINDS TONIGHT.

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY

FLASH FLOOD WATCH THROUGH WEDNESDAY AFTERNOON. SEE LAXFFASGX. WINTER
STORM WARNING FOR THE MOUNTAINS THROUGH WEDNESDAY AFTERNOON. SEE
LAXWSWSGX.

SCATTERED THUNDERSTORMS WITH SMALL HAIL...WATERSPOUTS...AND ISOLATED
TORNADOES ARE POSSIBLE WEDNESDAY.

STRONG GUSTY WINDS WEDNESDAY.

.SPOTTER INFORMATION STATEMENT...

SKYWARN HAS BEEN ACTIVATED IN ORANGE AND SAN BERNARDINO COUNTIES.
ACTIVATION WILL ALSO BE NEEDED IN SAN DIEGO AND RIVERSIDE COUNTIES
TUESDAY AND WEDNESDAY.

MARTIN

The office that day

Everything else NWS San Diego, CA issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Dec 20, 5:56 PM PST	Areal Flood Advisory	SGX	Riverside	35 hr
Dec 20, 8:19 PM PST	Areal Flood Advisory	SGX	Orange, Riverside, San Bernardino, San Diego	6 hr
Dec 20, 8:54 PM PST	Areal Flood Advisory	SGX	San Diego	6 hr
Dec 20, 10:33 PM PST	Areal Flood Advisory	SGX	Riverside, San Bernardino	4 hr
Dec 21, 2:55 AM PST	River Flood Warning	SGX	San Bernardino	65 hr
Dec 21, 4:18 AM PST	Winter Storm Warning	SGX	Riverside, San Bernardino	38 hr
Dec 21, 4:18 AM PST	Winter Weather Advisory	SGX	Riverside, San Bernardino	14 hr
Dec 21, 6:38 AM PST	River Flood Warning	SGX	San Diego	15 hr
Dec 21, 8:05 AM PST	Areal Flood Advisory	SGX	Orange, Riverside, San Bernardino, San Diego	12 hr
Dec 21, 12:47 PM PST	River Flood Warning	SGX	San Diego	46 hr
Dec 21, 12:56 PM PST	Wind Advisory	SGX	Orange, Riverside, San Bernardino, San Diego	24 hr
Dec 21, 1:46 PM PST	Small Craft Advisory	SGX		28 hr

Nearby

River Flood Warnings in California, 2010 Every river flood warning in 2010

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.