Alert archive / California / Flash Flood Warnings in 2004

Flash Flood Warning 2, NWS San Diego, CA

February 2, 2004Orange County, Riverside County, San Diego County, California

NWS San Diego, CA issued this flash flood warning at Feb 2, 2004, 9:19 PM PST for Orange County, Riverside County, San Diego County, California. It was in force for 220 days. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
Feb 2, 2004, 9:19 PM PST (05:19 UTC)
Expired
Sep 9, 2004, 2:30 PM PDT
In force
220 days
Issued by
NWS San Diego, CA
Area
Counties, with a storm outline in the text

Counties Orange County, CA, Riverside County, CA, San Diego County, CA

The radar

The San Diego radar (KNKX), 67 km from the middle of the area, began a volume at 05:19 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 nearest sounding before it

San Diego, CA (KNKX), launched 00:00Z, 5.3 hours before the alert went out and 87 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 00:00Z on 2004-02-03Temperature 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 00:00Z on 2004-02-03The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 3 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
2190 m above ground
0-6 km bulk shear
41 kt
0-1 km storm-relative helicity
3 m²/s²
0-3 km storm-relative helicity
10 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 030525 CCA
FFWSGX
CAC059-030800-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING...CORRECTION
NATIONAL WEATHER SERVICE SAN DIEGO CA
919 PM PST MON FEB 2 2004

CORRECTION FOR COUNTY CODE TO REMOVE RIVERSIDE COUNTY.

THE NATIONAL WEATHER SERVICE HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  ORANGE COUNTY IN SOUTHWEST CALIFORNIA
  THIS INCLUDES THE CITIES OF...YORBA LINDA...WESTMINSTER...TUSTIN
  FOOTHILLS...TUSTIN...STANTON...SEAL BEACH...SANTA ANA...
  PLACENTIA...NEWPORT BEACH...MISSION VIEJO...LAGUNA HILLS...LA
  HABRA...IRVINE...HUNTINGTON BEACH...GARDEN GROVE...FULLERTON...
  FOUNTAIN VALLEY...EL TORO...CYPRESS...COSTA MESA...BUENA PARK...
  BREA...ANAHEIM

* UNTIL 1200 AM MIDNIGHT PST

* AT 920 PM PST...WEATHER SERVICE DOPPLER RADAR INDICATED VERY HEAVY 
RAIN FROM SEAL BEACH TO BUENA PARK...MOVING EAST AT 20 MPH.

* A COLD FRONT WITH HEAVY RAIN WILL CONTINUE THROUGH 1200 MIDNIGHT. 


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.  THERE COULD ALSO BE DEADLY MUD SLIDES NEAR STEAP 
TERRAIN ON THE WESTERN SLOPES OF THE THE SANTA ANA MOUNTAINS

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

$$

LAT...LON 3372 11813 3365 11807 3349 11762 3357 11732
          3393 11776 3396 11795
1 follow-up statement
000 
WGUS56 KSGX 092029
FFWSGX
CAC065-073-092130-
/X.NEW.KSGX.FF.W.0002.040909T2025Z-040909T2130Z/
/X.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE SAN DIEGO CA
125 PM PDT THU SEP 9 2004

THE NATIONAL WEATHER SERVICE IN SAN DIEGO HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  CENTRAL RIVERSIDE COUNTY IN SOUTHEAST CALIFORNIA
  EASTERN SAN DIEGO COUNTY IN SOUTHWEST CALIFORNIA

* UNTIL 230 PM PDT

* AT 119 PM PDT...VERY HEAVY RAIN WAS INDICATED FROM THUNDERSTORMS   
NEAR LAKE HEMET AND MOUNT LAGUNA.

RESIDENTS AND MOTORISTS IN AND BELOW RECENTLY BURNED AREAS SHOULD BE 
ALERT TO HEAVY MUD AND DEBRIS FLOWS WHICH MAY BLOCK ROADS AND 
CULVERTS. POTENTIALLY DANGEROUS FLOODING AND PROPERTY LOSS COULD 
RESULT IN AREAS WHERE RUNOFF IS RESTRICTED OR BLOCKED.

LAT...LON 3383 11681 3276 11643 3281 11636 3378 11661

$$

JAD

The office that day

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

IssuedProductOfficeCountiesLasted
Feb 2, 8:00 PM PSTFlash Flood WarningSGXRiverside, San Bernardino219 days
Feb 2, 10:21 PM PSTSevere Thunderstorm WarningSGXSan Diego69 min
Feb 2, 10:25 PM PSTFlash Flood WarningSGXRiverside, San Diego220 days
Feb 2, 10:25 PM PSTSpecial Marine WarningSGX65 min
Feb 2, 11:28 PM PSTSevere Thunderstorm WarningSGXSan Diego47 min
Feb 2, 11:29 PM PSTSevere Thunderstorm WarningSGXSan Diego46 min
Feb 2, 11:55 PM PSTFlash Flood WarningSGXSan Bernardino95 min
Feb 3, 1:20 AM PSTFlash Flood WarningSGXSan Bernardino, San Diego220 days

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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.