Alert archive / California / Flash Flood Warnings in 1992

Flash Flood Warning 4, NWS San Diego, CA

August 13, 1992San Diego County, California

NWS San Diego, CA issued this flash flood warning at Aug 13, 1992, 1:33 PM PDT for San Diego County, California. It was in force for 57 min.

The area

The counties it named.

The facts

Issued
Aug 13, 1992, 1:33 PM PDT (20:33 UTC)
Expired
Aug 13, 1992, 2:30 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, 8.6 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 1992-08-13Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCLLFCEL10008507005003002001001 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 12:00Z on 1992-08-13The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -15 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
2022 m above ground
0-6 km bulk shear
9 kt
0-1 km storm-relative helicity
-15 m²/s²
0-3 km storm-relative helicity
12 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.

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 13, 12:30 PM PDT, 1 hour 3 minutes before
CAC073-140130-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SAN DIEGO CA
1230 PM PDT THU AUG 13 1992

...THUNDERSTORMS AND HEAVY RAIN IN AND NEAR THE MOUNTAINS...

AT 12 NOON RADAR...SATELLITE AND REMOTE RAIN GAUGES INDICATED LOCAL
HEAVY RAIN NEAR CUYAMACA AND DULZURA.  THE HEAVY RAIN WAS ASSOCIATED
WITH THUNDERSTORMS.  THUNDERSTORMS WILL CONTINUE IN THE MOUNTAINS OF
SAN DIEGO COUNTY THIS AFTERNOON AND EVENING.  SOME THUNDERSTORMS WILL
DRIFT WEST OF THE MOUNTAINS AND WILL MAINLY AFFECT THE INLAND VALLEYS
...BUT SOME COULD EVEN REACH THE COAST.  AT NOON THERE WAS A
THUNDERSTORM JUST EAST OF GILLESPIE FIELD.  THERE WILL ALSO BE SOME
THUNDERSTORMS IN THE DESERTS.

SOME THUNDERSTORMS MAY HAVE HEAVY RAIN...STRONG GUSTY
WINDS...DANGEROUS LIGHTNING AND SMALL HAIL.  IF THREATENING WEATHER
APPROACHES SEEK SHELTER INDOORS.  AVOID SHELTER UNDER ISOLATED TREES
OR OTHER TALL OBJECTS OR IN LOW LYING AREAS SUBJECT TO FLOODING.

MOIST UNSTABLE AIR IS FLOWING AROUND HIGH PRESSURE CENTERED OVER
NEVADA.  THIS WILL CONTINUE SCATTERED THUNDERSTORMS IN THE MOUNTAINS
AND DESERTS WITH SOME DRIFTING WEST OF THE MOUNTAINS.  THUNDERSTORMS
WILL CONTINUE INTO THIS EVENING AND THEN TAPER LATE TONIGHT.

ATKIN

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 13, 12:36 PM PDTFlash Flood WarningSGXSan Diego69 min
Aug 13, 1:33 PM PDTSevere Thunderstorm WarningSGXSan Diego57 min
Aug 13, 3:35 PM PDTFlash Flood WarningSGXImperial55 min
Aug 13, 3:35 PM PDTSevere Thunderstorm WarningSGXImperial55 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.