Alert archive / California / Flash Flood Warnings in 1992

Flash Flood Warning 2, NWS San Diego, CA

August 1, 1992San Diego County, California

NWS San Diego, CA issued this flash flood warning at Aug 1, 1992, 1:18 PM PDT for San Diego County, California. It was in force for 57 min.

The area

The counties it named.

The facts

Issued
Aug 1, 1992, 1:18 PM PDT (20:18 UTC)
Expired
Aug 1, 1992, 2:15 PM PDT
In force
57 min
Issued by
NWS San Diego, CA
Area
Whole counties

County San Diego County, CA

The nearest sounding before it

San Diego, CA (KNKX), launched 12:00Z, 8.3 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 1992-08-01Temperature 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 1992-08-01The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 8 square meters per square second.1939Sfc1 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
1346 m above ground
0-6 km bulk shear
11 kt
0-1 km storm-relative helicity
8 m²/s²
0-3 km storm-relative helicity
57 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 
TTAA00 KSAN 012019
FFWSAN
CAC073-012115-
 
BULLETIN - EBS ACTIVATION REQUESTED
SEVERE THUNDERSTORM AND FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE SAN DIEGO CA
118 PM PDT SAT AUG 1 1992
 
THE NATIONAL WEATHER SERVICE IN SAN DIEGO HAS ISSUED A
SEVERE THUNDERSTORM AND FLASH FLOOD WARNING
EFFECTIVE UNTIL  215 PM PDT
FOR PEOPLE IN THE FOLLOWING LOCATION...
 
IN SOUTHWEST CALIFORNIA
 
   ...NORTH CENTRAL SAN DIEGO COUNTY
 
...SEVERE THUNDERSTORM OVER LAKE HENSHAW AT 12:30 PM OCCURRED CAUSING
PHYSICAL INJURY TO A 30 YEAR OLD WOMAN WHEN LIGHTNING STRUCK HER. SHE
REPORTEDLY SUFFERED SEVERE NECK BURNS AND IS BEING TREATED BY
PARAMEDICS AT THIS TIME.
 
THERE HAS BEEN A RAPID INCREASE IN THUNDERSTORM ACITIVITY FROM THE BIG
BEAR SOUTH TO NEAR ESCONDIDO. THE THUNDERSTORMS ARE MOVING NORTHWEST
AND MAY REACH SOME OF THE COASTAL AREAS BY LATE AFTERNOON.
 
 
 
WHEN THUNDERSTORMS ARE OCCURRING...PEOPLE SHOULD MOVE INSIDE A
STRONG BUILDING.  DO NOT STAND BY WINDOWS.  DON'T USE TELEPHONES
OR ELECTRICAL APPLIANCES UNLESS IN AN EMERGENCY UNTIL THE STORM
HAS PASSED.  MOTORISTS SHOULD NOT DRIVE INTO LOW WATER CROSSINGS.
 
SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 55
MPH...DESTRUCTIVE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN.
FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR
OF YOUR HOME OR BUSINESS.  HEAVY RAINS FLOOD ROADS QUICKLY SO
DON'T DRIVE INTO AREAS WHERE WATER COVERS THE ROAD.

What forecasters said that day

The local office's own words before this flash flood warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

In the hours before

Special weather statement, Aug 1, 11:34 AM PDT, 1 hour 44 minutes before
CAZ013-018-020030-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SAN DIEGO CA
1132 AM PDT SAT AUG 1 1992

....THUNDERSTORMS DEVELOPING OVER SAN DIEGO AND IMPERIAL COUNTIES THIS
MORNING...

THUNDERSTORMS ARE DEVELOPING ALONG THE CALIFORNIA/MEXICAN BORDER NEAR
DESCANSO AND CAMPO CALIFORNIA. RADAR REPORTS THE MOVEMENT IS TOWARD
THE NORTHWEST WITH TOPS OF THE THUNDERSTORMS UP TO 43000 FEET. A FLASH
FLOOD WATCH HAS BEEN ISSUED FOR ALL THE MOUNTAINS AND DESERTS OF SAN
DIEGO COUNTY UNTIL 7 PM THIS EVENING. THESE THUNDERSTORMS HAVE THE
POTENTIAL FOR LOCAL FLOODING..BRIEF HEAVY RAIN AND DANGEROUS
LIGHTNING.

IF YOUR OBSERVE WATER RUNNING ACROSS THE ROADWAY DO NOT ATTEMPT TO
CROSS. MOVE TO HIGHER GROUND AS QUICKLY AS POSSIBLE.

FURTHER STATEMENTS WILL BE ISSUED AS CONDTITIONS WARRANT.

R. STITT

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 1, 1:18 PM PDTSevere Thunderstorm WarningSGXSan Diego57 min

Nearby

Flash Flood Warnings in California, 1992Every flash flood warning in 1992

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.