Alert archive / California / Severe Thunderstorm Warnings in 1997

Severe Thunderstorm Warning 13, NWS San Diego, CA

September 2, 1997San Diego County, California

NWS San Diego, CA issued this severe thunderstorm warning at Sep 2, 1997, 1:58 PM PDT for San Diego County, California. It was in force for 62 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
Sep 2, 1997, 1:58 PM PDT (20:58 UTC)
Expired
Sep 2, 1997, 3:00 PM PDT
In force
62 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, 9.0 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 1997-09-02Temperature 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°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 1997-09-02The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 34 square meters per square second.193958Sfc1 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
-515 J/kg
Mixed-layer LCL
1444 m above ground
0-6 km bulk shear
30 kt
0-1 km storm-relative helicity
34 m²/s²
0-3 km storm-relative helicity
48 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
Sep 2, 1:58 PM PDTFlash Flood WarningSGXSan Diego62 min
Sep 2, 2:33 PM PDTFlash Flood WarningSGXSan Diego57 min
Sep 2, 2:33 PM PDTSevere Thunderstorm WarningSGXSan Diego57 min
Sep 2, 3:35 PM PDTFlash Flood WarningSGXRiverside55 min
Sep 2, 3:35 PM PDTSevere Thunderstorm WarningSGXRiverside55 min
Sep 2, 4:13 PM PDTFlash Flood WarningSGXSan Bernardino62 min
Sep 2, 4:13 PM PDTSevere Thunderstorm WarningSGXSan Bernardino62 min

Nearby

Severe Thunderstorm Warnings in California, 1997Every severe thunderstorm warning in 1997

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.