Alert archive / California / Severe Thunderstorm Warnings in 2004

Severe Thunderstorm Warning 2, NWS San Diego, CA

February 2, 2004San Diego County, California

NWS San Diego, CA issued this severe thunderstorm warning at Feb 2, 2004, 11:28 PM PST for San Diego County, California. It was in force for 47 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Feb 2, 2004, 11:28 PM PST (07:28 UTC)
Expired
Feb 3, 2004, 12:15 AM PST
In force
47 min
Issued by
NWS San Diego, CA
Area
Whole counties

County San Diego County, CA

The radar

The San Diego radar (KNKX), 28 km from the middle of the area, began a volume at 07:28 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, 7.5 hours before the alert went out and 47 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 
WUUS56 KSGX 030728
SVRSGX
CAC073-030815-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE SAN DIEGO CA
1130 PM PST MON FEB 2 2004

THE NATIONAL WEATHER SERVICE IN SAN DIEGO HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SAN DIEGO COUNTY IN SOUTHWEST CALIFORNIA
  THIS INCLUDES THE CITIES OF...SPRING VALLEY...SANTEE...SAN DIEGO...
  POWAY...NATIONAL CITY...LEMON GROVE...LAKESIDE...LA MESA...IMPERIAL
  BEACH...ESCONDIDO...EL CAJON...CORONADO...CHULA VISTA

* UNTIL 1215 AM PST

* AT 1130 PM PST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  LINE OF STORMS CAPABLE OF PRODUCING DAMAGING WINDS TO 60 MPH FROM
  PALOMAR MOUNTAIN TO POWAY TO THE CITY OF SAN DIEGO. THESE STORMS
  ARE MOVING EAST AT 30 MPH AND WILL AFFECT THE SOUTH 
  COAST...VALLEYS...MOUNTAINS AND DESERTS BETWEEN 1130 PM AND 1215
  AM. FLASH FLOODING WILL ALSO OCCUR...AND SMALL HAIL WILL BE
  POSSIBLE.

IF SEVERE WEATHER APPROACHES YOUR AREA...GO INSIDE A STURDY SHELTER
AWAY FROM CREEK BEDS AND OTHER FLOOD-PRONE AREAS. REMEMBER...A SEVERE
THUNDERSTORM CAN PRODUCE LARGE DAMAGING HAIL...DAMAGING WINDS IN
EXCESS OF 55 MPH...DEADLY LIGHTNING...AND VERY HEAVY RAIN.

REPORT SEVERE WEATHER TO THE NEAREST LAW ENFORCEMENT AGENCY. THEY
WILL RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE FORECAST
OFFICE IN SAN DIEGO.

$$

LAT...LON 3341 11704 3247 11739 3260 11610 3341 11606

MAXWELL

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 PSTFlash Flood WarningSGXRiverside, San Diego220 days
Feb 2, 10:25 PM PSTSpecial Marine WarningSGX65 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

Severe Thunderstorm Warnings in California, 2004Every severe thunderstorm 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.