Alert archive / Delaware / Severe Thunderstorm Warnings in 1990

Severe Thunderstorm Warning 44, NWS Wilmington, NC

August 13, 1990Kent County, Delaware

NWS Wilmington, NC issued this severe thunderstorm warning at Aug 13, 1990, 7:22 PM EDT for Kent County, Delaware. It was in force for 68 min.

The area

The counties it named.

The facts

Issued
Aug 13, 1990, 7:22 PM EDT (23:22 UTC)
Expired
Aug 13, 1990, 8:30 PM EDT
In force
68 min
Issued by
NWS Wilmington, NC
Area
Whole counties

County Kent County, DE

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

Atlantic City In, NJ (KACY), launched 12:00Z, 11.4 hours before the alert went out and 95 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, Atlantic City In, NJ at 12:00Z on 1990-08-13Temperature 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, Atlantic City In, NJ at 12:00Z on 1990-08-13The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 35 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
1333 m above ground
0-6 km bulk shear
13 kt
0-1 km storm-relative helicity
35 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 
TTAA00 KILG 132322
SVRILG
DEC001-140030-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE WILMINGTON DE
722 PM EDT MON AUG 13 1990
 
THE NATIONAL WEATHER SERVICE IN WILMINGTON HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  830 PM EDT
FOR PEOPLE IN THE FOLLOWING LOCATIONS......
 
IN CENTRAL DELAWARE
 
   ...KENT COUNTY
 
FOR THE DELAWARE BAY FROM
ALONG THE DELAWARE COAST FROM
 
RADAR AT 7:15 SHOWS A THUNDERSTORM WITH STRONG WINDS AND HEAVY RAIN
MOVING TOWARD KENT COUNTY DELAWARE. THIS THUNDERSTORM PRODUCED WINDS
TO 50 MPH IN BALTIMORE. THE THUNDERSTORM WILL MOVE ACROSS THE WESTERN
EDGE OF KENT COUNTY DELAWARE SHORTLY AFTER 7:30 PM THIS EVENING AND
WILL CONTINUE TO MOVE EAST ACROSS THE ENTIRE COUNTY.
 
 
 
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.

Nearby

Severe Thunderstorm Warnings in Delaware, 1990Every severe thunderstorm warning in 1990

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.