Alert archive / Delaware / Tornado Warnings in 1993

Tornado Warning 1, NWS Wilmington, NC

April 1, 1993Sussex County, Delaware

NWS Wilmington, NC issued this tornado warning at Apr 1, 1993, 7:04 PM EST for Sussex County, Delaware. It was in force for 56 min. 1 report came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued: Apr 1, 1993, 7:04 PM EST (00:04 UTC)
Expired: Apr 1, 1993, 8:00 PM EST
In force: 56 min
Issued by: NWS Wilmington, NC
Area: Whole counties

County Sussex County, DE

What was reported inside it

Time	Report	Where	Remark
Apr 1, 7:15 PM EST	Tornado F0	To 1 S Bridgville, DE

NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in. Storm Data before 1996 records only tornadoes, thunderstorm wind and hail.

The nearest sounding before it

Wallops Is Stn, VA (KWAL), launched 00:00Z, 0.1 hours before the alert went out and 84 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 436 J/kg
Mixed-layer CIN: -119 J/kg
Mixed-layer LCL: 1077 m above ground
0-6 km bulk shear: 60 kt
0-1 km storm-relative helicity: 160 m²/s²
0-3 km storm-relative helicity: 199 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.7

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
TTAA00 KILG 020007
TORILG
DEC005-020100-
 
BULLETIN - EBS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE WILMINGTON DE
704 PM EST THU APR 1 1993
 
THE NATIONAL WEATHER SERVICE IN WILMINGTON HAS ISSUED A
TORNADO WARNING EFFECTIVE UNTIL  800 PM EST
FOR PEOPLE IN THE FOLLOWING LOCATION...
 
IN SOUTH DELAWARE
 
   ...NORTHERN SUSSEX COUNTY
 
A SEVERE THUNDERSTORM IS LOCATED OVER NORTHERN SUSSEX COUNTY JUST NORTH
OF GEORGETOWN. THIS STORM IS MOVING NORTHEAST AST 35 MPH. PATUXENT RIVER
RADAR INDICATED A HOOK ECHO SIGNATURE ON THIS THUNDERSTORM.
 
THIS IS A DANGEROUS STORM SITUATION.  ACT QUICKLY.  IF YOU ARE
IN THE PATH OF THIS TORNADO MOVE TO A SHELTER BELOW GROUND IF
AVAILABLE.  OTHERWISE...GO TO A SMALL INTERIOR ROOM ON THE LOWEST
FLOOR POSSIBLE.  AVOID WINDOWS.  ABANDON CARS AND MOBILE HOMES
FOR A REINFORCED BUILDING OR GET INTO A DITCH OR CULVERT.
 
VAUGHAN

The office that day

Everything else NWS Wilmington, NC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Apr 1, 9:07 PM EST	Severe Thunderstorm Warning	ILM	New Castle	53 min

Nearby

Tornado Warnings in Delaware, 1993 Every tornado warning in 1993 Tornadoes in 1993

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.