Alert archive / California / Severe Thunderstorm Warnings in 2000

Severe Thunderstorm Warning 2, NWS San Diego, CA

February 21, 2000San Diego County, California

NWS San Diego, CA issued this severe thunderstorm warning at Feb 21, 2000, 2:51 PM PST for San Diego County, California. It was in force for 54 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 21, 2000, 2:51 PM PST (22:51 UTC)
Expired
Feb 21, 2000, 3:45 PM PST
In force
54 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 22:51 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 12:00Z, 10.9 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 12:00Z on 2000-02-21Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 3 joules per kilogram.LCLLFCEL10008507005003002001001 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 2000-02-21The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -96 square meters per square second.1939587897117Sfc1 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
3 J/kg
Mixed-layer CIN
-4 J/kg
Mixed-layer LCL
569 m above ground
0-6 km bulk shear
77 kt
0-1 km storm-relative helicity
-96 m²/s²
0-3 km storm-relative helicity
34 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 212256
SVRSAN
CAC073-212345-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE SAN DIEGO CA
251 PM PST MON FEB 21 2000

THE NATIONAL WEATHER SERVICE IN SAN DIEGO HAS ISSUED A

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

* UNTIL 345 PM PST

* AT 250 PM PST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  SEVERE THUNDERSTORMS OVER SAN DIEGO STATE UNIVERSITY AND NEAR
  SANTEE...MOVING NORTHEAST AT 25 MPH. DAMAGING WINDS GREATER THAN
  55 MPH...HAIL AND FUNNEL CLOUDS ARE POSSIBLE WITH THESE STORMS.

* THE SEVERE THUNDERSTORMS WILL BE IN THE REGION BETWEEN SAN
  DIEGO...EL CAJON AND RAMONA THROUGH 345 PM PST.

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 3285 11734 3250 11715 3252 11676 3320 11675

MAXWELL

The office that day

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

IssuedProductOfficeCountiesLasted
Feb 20, 8:30 PM PSTFlash Flood WarningSGXOrange2 hr
Feb 20, 10:15 PM PSTFlash Flood WarningSGXOrange, Riverside, San Bernardino, San Diego6 hr
Feb 21, 4:00 AM PSTFlash Flood WarningSGXSan Diego2 hr
Feb 21, 1:45 PM PSTFlash Flood WarningSGXOrange, Riverside, San Diego2 hr
Feb 21, 2:05 PM PSTSevere Thunderstorm WarningSGXSan Diego55 min
Feb 21, 3:55 PM PSTFlash Flood WarningSGXRiverside, San Diego2 hr

Nearby

Severe Thunderstorm Warnings in California, 2000Every severe thunderstorm warning in 2000

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.