Alert archive / Delaware / Tornado Warnings in 1989

Tornado Warning 2, NWS Wilmington, NC

March 31, 1989Sussex County, Delaware

NWS Wilmington, NC issued this tornado warning at Mar 31, 1989, 3:13 PM EST for Sussex County, Delaware. It was in force for 47 min. 3 reports 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
Mar 31, 1989, 3:13 PM EST (20:13 UTC)
Expired
Mar 31, 1989, 4:00 PM EST
In force
47 min
Issued by
NWS Wilmington, NC
Area
Whole counties

County Sussex County, DE

The radar

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

What was reported inside it

TimeReportWhereRemark
Mar 31, 3:15 PM ESTHail 0.75Sussex, DE
Mar 31, 3:30 PM ESTThunderstorm Wind 0Sussex, DE
Mar 31, 3:50 PM ESTThunderstorm Wind 0Sussex, 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

Atlantic City In, NJ (KACY), launched 12:00Z, 8.2 hours before the alert went out and 112 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 1989-03-31Temperature 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°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 1989-03-31The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 93 square meters per square second.19395878Sfc1 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
0 m above ground
0-6 km bulk shear
52 kt
0-1 km storm-relative helicity
93 m²/s²
0-3 km storm-relative helicity
143 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 312014
TORILG
DEC005-312100-
 
BULLETIN - EBS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE WILMINGTON DE
313 PM EST FRI MAR 31 1989
 
THE NATIONAL WEATHER SERVICE IN WILMINGTON HAS ISSUED A
TORNADO WARNING EFFECTIVE UNTIL  400 PM EST
FOR PEOPLE IN THE FOLLOWING COUNTY...
 
IN SOUTH DELAWARE
          ...SUSSEX
 
AT 313 THIS AFTERNOON WEATHER RADAR INDICATED A TORNADO 3 MILES
SOUTHWEST OF GEORGETOWN....MOVING TOWARD THE NORTHEAST AT NEARLY
40 MILES AN HOUR.
 
IF YOU ARE IN THE PATH OF A TORNADO...THE SAFEST PLACE IS A
BASEMENT.  GET UNDER A WORKBENCH OR PIECE OF STURDY FURNITURE.
IF NO BASEMENT IS AVAILABLE...SEEK SHELTER IN AN INTERIOR ROOM
SUCH AS A CLOSET ON THE LOWEST FLOOR.  USE BLANKETS...PILLOWS...
OR CUSHIONS TO COVER YOUR BODY.  AVOID WINDOWS.
 
LC

What forecasters said that day

The local office's own words before this tornado 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, Mar 31, 12:55 PM EST, 2 hours 18 minutes before
SPECIAL WEATHER STATEMENT AND RADAR SUMMARY
NATIONAL WEATHER SERVICE CAPE HATTERAS NC
1235 PM EST FRI MAR 31 1989

...TORNADO WATCH NUMBER 75 IS IN EFFECT FOR PARTS OF NORTH CENTRAL AND
NORTH EASTERN NORTH CAROLINA INCLUDING PASQUATANK...CAMDEN...CHOWAN...
PERQUIMANS...BERTIE...HERTFORD...MARTIN AND GATES COUNTIES...THIS WATCH
IS IN EFFECT UNTIL 8 PM THIS EVENING...

AN AREA OF EXPECTED SCATTERED THUNDERSTORMS WAS DETECTED BEYOND THE
125 MILE RANGE OF OUR RADAR AND EXTENDED SOUTH FROM CENTRAL VIRGINIA
INTO THE NORTHERN COASTAL REGION OF NORTH CAROLINA.

MOVEMENT OF THIS NEW AREA IS AS YET UNDERTERMINED.

ADDITIONALLY...AN AREA OF SCATTERED THUNDERSTORMS WAS WELL OFF SHORE
OF THE OUTER BANKS 120 MILES EAST THRU 150 MILES SOUTH OF CAPE HATTERAS
AND IS EXPECTED TO BE BEYOND THE RANGE OF OUR EQUIPMENT WITHIN THE
HOUR.
MOVEMENT WAS TO THE NORTHEAST AT 45 MILES AN HOUR.

RESPIDENTS IN NORTHEAST NORTH CAROLINA SHOULD BE PREPARED FOR
BRI(EF PERIODS OF HEAVY RAIN...GUSTY WINDS...AND FREQUENT
LIGHTNING STRIKES AS THESE THUNDERSTORMS MOVE EASTWARD.

FMC
Special weather statement, Mar 31, 1:35 PM EST, 1 hour 38 minutes before
SPECIAL WEATHER STATEMENT AND RADAR SUMMARY
NATIONAL WEATHER SERVICE CAPE HATTERAS NC
135 PM EST FRI MAR 31 1989

...TORNADO WATCH NUMBER 75 IS IN EFFECT FOR PARTS OF NORTH CENTRAL AND
NORTH EASTERN NORTH CAROLINA INCLUDING PASQUATANK...CAMDEN...CHOWAN...
PERQUIMANS...BERTIE...HERTFORD...MARTIN AND GATES COUNTIES...THIS WATCH
IS IN EFFECT UNTIL 8 PM THIS EVENING...

AT 128 PM EST...AN AREA OF EXPECTED SCATTERED THUNDERSTORMS WITH VERY
HEAVY RAIN WAS FOUND BY THE CAPE HATTERAS WEATHER SURVEILLANCE RADAR
JUST BEYOND THE 125 MILE RANGE OF OUR EQUIPMENT.

THIS AREA EXTENDED SOUTH FROM THE WESTERN TIDEWATER REGION OF VIRGINIA
THROUGH THE CENTRAL PORTION OF THAT STATE INTO THE NORTHERN PIEDMONT
REGION OF NORTH CAROLINA.                                                      M
MOVEMENT WAS TO THE NORTHEAST AT 40 MILES AN HOUR.

RESPIDENTS IN NORTHEAST NORTH CAROLINA SHOULD BE PREPARED FOR
BRIEF PERIODS OF HEAVY RAIN...GUSTY WINDS...AND FREQUpENT
LIGHTNING STRIKES AS THESE THUNDERSTORMS MOVE EASTWARD.

FMC
Special weather statement, Mar 31, 2:45 PM EST, 28 minutes before
SPECIAL WEATHER STATEMENT AND RADAR SUMMARY
NATIONAL WEATHER SERVICE CAPE HATTERAS NC
235 PM EST FRI MAR 31 1989

...A TORNADO WATCH IS IN EFFECT FOR PORTIONS OF NORTH CAROLINA
INCLUDING PASQUATANK...CAMDEN...CHOWAN...PERQUIMANS...BERTIE...
HERTFORD...MARTIN AND GATES COUNTIES. THIS WATCH IS IN EFFECT UNTIL
800 PM EST.

AT 230 PM EST...A LINE OF INTENSE THUNDERSTORMS WAS PUSHING INTO
NORTHEAST NORTH CAROLINA. THE MAIN PORTION OF THE LINE EXTENDED FROM
JUST WEST OF WILLIAMSBURG VIRGINIA...INTO NORTHAMPTON COUNTY NORTH
CAROLINA...TO NEAR ROCKEY MOUNT AND WILSON. MARBLE SIZED HAIL WAS
REPORTED WITH SOME OF THE THUNDERSTORMS.

THE THUNDERSTORMS WERE MOVING NORTHEAST AT 45 MILES AN HOUR...WITH
THE LINE ITSELF MOVING SOUTHEAST AT 20 MILES AN HOUR. THIS MOVEMENT
WILL BRING THE THUNDERSTORMS INTO HERTFORD AND BERTIE COUNTIES AROUND
330 THIS AFTERNOON...AND MARTIN...GATES...AND CHOWAN COUNTIES AROUND
400.

RESIDENTS IN NORTHEAST NORTH CAROLINA SHOULD BE ALERT TO RAPIDLY
CHANGING WEATHER CONDITIONS THIS AFTERNOON AND EVENING AND BE
PREPARED TO TAKE QUICK ACTION IF THREATENING WEATHER APPROACHES.

BT

The office that day

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

IssuedProductOfficeCountiesLasted
Mar 31, 3:05 PM ESTSevere Thunderstorm WarningILMSussex55 min

Nearby

Tornado Warnings in Delaware, 1989Every tornado warning in 1989Tornadoes in 1989

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.