Alert archive / California / Flash Flood Warnings in 2004

Flash Flood Warning 28, NWS San Diego, CA

February 26, 2004Orange County, California

NWS San Diego, CA issued this flash flood warning at Feb 26, 2004, 5:05 AM PST for Orange County, California. It was in force for 3 hr. 9 reports came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued
Feb 26, 2004, 5:05 AM PST (13:05 UTC)
Expired
Feb 26, 2004, 8:30 AM PST
In force
3 hr
Issued by
NWS San Diego, CA
Area
Whole counties

County Orange County, CA

The radar

The Santa Ana Mts radar (KSOX), 20 km from the middle of the area, began a volume at 13:09 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.

What was reported inside it

TimeReportWhereRemark
Feb 26, 5:05 AM PSTFLOODSanta Ana, CANORTHBOUNT STATE ROUTE 133 AT I405 ALL LANES FLOODED. PER CHP.
Feb 26, 5:44 AM PSTFLOODHuntington Beach, CAPACIFIC HIGHWAY CLOSED FROM WARNER AVENUE ON THE NORTH TO SEAPOINT AVENUE ON THE SOUTH IN HUNTINGTON BEACH
Feb 26, 5:56 AM PSTHEAVY RAIN 0Santa Ana, CARAINFALL TOTAL 2.13
Feb 26, 6:12 AM PSTHEAVY RAIN 2.7Fullerton, CA
Feb 26, 6:31 AM PSTHEAVY RAIN 0.93Huntington Beach, CA
Feb 26, 6:40 AM PSTFLOODHuntington Beach, CAFLOODED ROADWAYS GOLDEN WEST AND SEAPORT AT HUNTINGTON NORTH TO WARNER ROAD.
Feb 26, 6:50 AM PSTHEAVY RAIN 0Laguna Niguel, CAORANGE COUNTY RE4PORTS RAINFALL TOTAL 2.42 INCHES.
Feb 26, 6:50 AM PSTHEAVY RAIN 2.42Laguna Niguel, CAORANGE COUNTY REPORTS RAINFALL TOTALS OF 2.42 INCHES.
Feb 26, 7:50 AM PSTHEAVY RAIN 2.42Laguna Niguel, CARAINFALL FROM 1900 YESTETRDAY TO 0500 TODAY

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

San Diego, CA (KNKX), launched 12:00Z, 1.1 hours before the alert went out and 111 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-pSkew-T log-p diagram, San Diego, CA at 12:00Z on 2004-02-26Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, San Diego, CA at 12:00Z on 2004-02-26The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 204 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
598 m above ground
0-6 km bulk shear
51 kt
0-1 km storm-relative helicity
204 m²/s²
0-3 km storm-relative helicity
293 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
WGUS56 KSGX 261306
FFWSGX
CAC059-261630-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE SAN DIEGO CA
505 AM PST THU FEB 26 2004

THE NATIONAL WEATHER SERVICE HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  CENTRAL ORANGE COUNTY IN SOUTHWEST CALIFORNIA
  
* UNTIL 830 AM PST

* AT 453 AM PST...FLOODING WAS REPORTED ALONG 405 AND FAIRVIEW NEAR
  COSTA MESA...MOVING NORTHEAST AT 20 MPH.

EXCESSIVE RUNOFF FROM THIS STORM WILL CAUSE FLASH FLOODING OF SMALL
CREEKS AND STREAMS...HIGHWAYS AND UNDERPASSES. ADDITIONALLY...COUNTRY
ROADS AND FARMLANDS ALONG THE BANKS OF CREEKS AND STREAMS AND OTHER
LOW LYING AREAS ARE SUBJECT TO FLASH FLOODING.

A FLASH FLOOD WARNING MEANS THAT FLOODING IS IMMINENT OR OCCURRING.
IF YOU ARE IN THE WARNING AREA MOVE TO HIGHER GROUND IMMEDIATELY.
RESIDENTS LIVING ALONG STREAMS AND CREEKS SHOULD TAKE IMMEDIATE
PRECAUTIONS TO PROTECT LIFE AND PROPERTY. DO NOT ATTEMPT TO CROSS
SWIFTLY FLOWING WATERS OR WATERS OF UNKNOWN DEPTH BY FOOT OR BY
AUTOMOBILE. IF YOUR VEHICLE STALLS, ABANDON IT IMMEDIATELY AND SEEK
HIGHER GROUND.

TO REPORT SEVERE WEATHER HAVE THE NEAREST LAW ENFORCEMENT AGENCY
RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE FORECAST OFFICE.

$$

LAT...LON 3379 11798 3353 11765 3369 11756 3389 11780

The office that day

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

IssuedProductOfficeCountiesLasted
Feb 25, 9:30 PM PSTFlash Flood WarningSGXSan Bernardino6 hr
Feb 26, 12:30 AM PSTFlash Flood WarningSGXRiverside, San Bernardino90 min
Feb 26, 1:56 AM PSTFlash Flood WarningSGXRiverside, San Bernardino34 min
Feb 26, 2:30 AM PSTFlash Flood WarningSGXRiverside, San Bernardino6 hr
Feb 26, 7:28 AM PSTFlash Flood WarningSGXSan Diego2 hr
Feb 26, 9:30 AM PSTFlash Flood WarningSGXSan Diego90 min

Nearby

Flash Flood Warnings in California, 2004Every flash flood warning in 2004

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.