Alert archive / California / Flash Flood Warnings in 2004

Flash Flood Warning 3, NWS San Diego, CA

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

NWS San Diego, CA issued this flash flood warning at Feb 2, 2004, 10:25 PM PST for 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, 10:25 PM PST (06:25 UTC)
Expired
Sep 9, 2004, 4:45 PM PDT
In force
220 days
Issued by
NWS San Diego, CA
Area
Counties, with a storm outline in the text

Counties Riverside County, CA, San Diego County, CA

The radar

The San Diego radar (KNKX), 75 km from the middle of the area, began a volume at 06:29 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, 6.4 hours before the alert went out and 94 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°0°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 030626
FFWSGX
CAC073-030930-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE SAN DIEGO CA
1025 PM PST MON FEB 2 2004

THE NATIONAL WEATHER SERVICE HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  SAN DIEGO COUNTY IN SOUTHWEST CALIFORNIA
  THIS INCLUDES THE CITIES OF...VISTA...SPRING VALLEY...SANTEE...SAN
  MARCOS...POWAY...OCEANSIDE...NATIONAL CITY...LEMON GROVE...
  LAKESIDE...LA MESA...IMPERIAL BEACH...FALLBROOK...ESCONDIDO...
  ENCINITAS...EL CAJON...CORONADO...CHULA VISTA...CARLSBAD

* UNTIL 130 AM PST

* AT 1015 PM PST...WEATHER SERVICE DOPPLER RADAR INDICATED A LINE
  OF VERY HEAVY RAIN 10 MILES WEST OF OCEANSIDE TO 25 MILES WEST OF
  SAN DIEGO...MOVING EAST AT 30 MPH.

* SHOWERS AND THUNDERSTORMS WITH EXCESSIVE RAINFALL WILL BE...  
  OVER OCEANSIDE AT 1035 PM PST
  OVER ESCONDIDO AT 1050 PM PST
  OVER SAN DIEGO AT 1055 PM PST
  OVER VALLEY CENTER AT 1055 PM PST
  OVER POWAY AT 1055 PM PST
  OVER BARONA AT 1105 PM PST

MUD SLIDES AND ROCK SLIDES ARE EXPECTED WITH THIS STORM. MUD SLIDES
AND ROCK SLIDES CAN POTENTIALLY TRAP AND KILL PEOPLE CAUGHT IN THEIR
PATH. MUD SLIDES CAN ALSO CAUSE FLOODING WHERE RUNOFF IS RESTRICTED
OR BLOCKED.

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 3253 11737 3260 11624 3305 11653 3342 11659
          3339 11755

MAXWELL
1 follow-up statement
000 
WGUS56 KSGX 092147
FFWSGX
CAC065-073-092345-
/X.NEW.KSGX.FF.W.0003.040909T2145Z-040909T2345Z/
/X.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

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

THE NATIONAL WEATHER SERVICE IN SAN DIEGO HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  WEST RIVERSIDE COUNTY IN SOUTHWEST CALIFORNIA 
  NORTH CENTRAL SAN DIEGO COUNTY IN SOUTHWEST CALIFORNIA

* UNTIL 445 PM PDT

* AT 240 PM PDT...FLASH FLOODING WAS REPORTED FROM A THUNDERSTORM 11
  MILES SOUTH OF SANTA ROSA MOUNTAIN...OR ABOUT 26 MILES SOUTH OF
  PALM DESERT...MOVING NORTHEAST AT 10 MPH.

* THE THUNDERSTORM PRODUCING FLASH FLOODING WILL BE NEAR...
  SANTA ROSA MOUNTAIN BY 335 PM PDT

MUD SLIDES AND ROCK SLIDES ARE EXPECTED WITH THIS STORM. MUD SLIDES
AND ROCK SLIDES CAN POTENTIALLY TRAP AND KILL PEOPLE CAUGHT IN THEIR
PATH.

LAT...LON 3339 11668 3327 11652 3348 11627 3362 11647

$$

SMALL/ATKIN

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, 9:19 PM PSTFlash Flood WarningSGXOrange, Riverside, San Diego220 days
Feb 2, 10:21 PM PSTSevere Thunderstorm WarningSGXSan Diego69 min
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.