Alert archive / California / Flash Flood Warnings in 1988

Flash Flood Warning 1, NWS San Diego, CA

August 23, 1988Imperial County, California

NWS San Diego, CA issued this flash flood warning at Aug 23, 1988, 10:00 PM PDT for Imperial County, California. It was in force for 3 hr.

The area

The counties it named.

The facts

Issued
Aug 23, 1988, 10:00 PM PDT (05:00 UTC)
Expired
Aug 24, 1988, 1:00 AM PDT
In force
3 hr
Issued by
NWS San Diego, CA
Area
Whole counties

County Imperial County, CA

The radar

The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.

The nearest sounding before it

San Diego, CA (KNKX), launched 00:00Z, 5.0 hours before the alert went out and 173 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 1988-08-24Temperature 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 1988-08-24The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 39 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
3636 m above ground
0-6 km bulk shear
17 kt
0-1 km storm-relative helicity
39 m²/s²
0-3 km storm-relative helicity
50 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.

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 23, 10:00 PM PDTSevere Thunderstorm WarningSGXImperial3 hr
Aug 24, 2:25 AM PDTFlash Flood WarningSGXImperial50 min
Aug 24, 2:25 AM PDTSevere Thunderstorm WarningSGXImperial50 min

Nearby

Flash Flood Warnings in California, 1988Every flash flood warning in 1988

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.