Alert archive / Delaware / Severe Thunderstorm Warnings in 1990
Severe Thunderstorm Warning 25, NWS Wilmington, NC
NWS Wilmington, NC issued this severe thunderstorm warning at Jul 1, 1990, 1:17 AM EDT for Kent County, Sussex County, Delaware. It was in force for 118 min.
The area
The counties it named.
The facts
- Issued
- Jul 1, 1990, 1:17 AM EDT (05:17 UTC)
- Expired
- Jul 1, 1990, 3:15 AM EDT
- In force
- 118 min
- Issued by
- NWS Wilmington, NC
- Area
- Whole counties
Counties Kent County, DE, Sussex 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 00:00Z, 5.3 hours before the alert went out and 101 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.
- Mixed-layer CAPE
- 494 J/kg
- Mixed-layer CIN
- -12 J/kg
- Mixed-layer LCL
- 1742 m above ground
- 0-6 km bulk shear
- 23 kt
- 0-1 km storm-relative helicity
- 36 m²/s²
- 0-3 km storm-relative helicity
- 58 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 2.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KILG 010518 SVRILG DEC001-005-010715- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE WILMINGTON DE 117 AM EDT SUN JUL 1 1990 THE NATIONAL WEATHER SERVICE IN WILMINGTON HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 315 AM EDT FOR PEOPLE IN THE FOLLOWING LOCATIONS...S... IN CENTRAL DELAWARE ...SOUTHWESTERN KENT COUNTY FOR THE DELAWARE BAY FROM ALONG THE DELAWARE COAST FROM IN SOUTH DELAWARE ...SUSSEX COUNTY FOR THE DELAWARE BAY FROM ALONG THE DELAWARE COAST FROM NATIONAL WEATHER SERVICE RADAR SHOWS A THUNDERSTORM NEAR RIDGELY MARYLAND MOVING SOUTHEAST AT 35 TO 40 MPH...THIS STORM WILL MOVE INTO SOUTHWEST KENT COUNTY BY 130 AM EDT THEN SOUTHEAST ACROSS SUSSEX COUNTY OF DELAWARE TO THE ATLANTIC COAST BY ABOUT 230 AM EDT. THIS STORM CONTAINS DAMAGING WINDS HAIL DANGEROUS LIGHTNING AND HEAVY RAIN. BOATERS ALONG THE COAST SHOULD SEEK SAFE HARBOR AND AVOID THIS STORM. WHEN THUNDERSTORMS ARE OCCURRING...PEOPLE SHOULD MOVE INSIDE A STRONG BUILDING. DO NOT STAND BY WINDOWS. DON'T USE TELEPHONES OR ELECTRICAL APPLIANCES UNLESS IN AN EMERGENCY UNTIL THE STORM HAS PASSED. MOTORISTS SHOULD NOT DRIVE INTO LOW WATER CROSSINGS. 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. THIS IS A DANGEROUS STORM. IF YOU ARE IN ITS PATH YOU SHOULD PREPARE FOR DAMAGING WIND IN EXCESS OF 55 MPH...LARGE HAIL...AND DEADLY LIGHTNING. PEOPLE OUTSIDE SHOULD MOVE TO A SHELTER... PREFERABLY INSIDE A STRONG BUILDING BUT STAY AWAY FROM WINDOWS.
What forecasters said that day
The local office's own words before this severe thunderstorm 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, Jun 30, 10:17 PM EDT, 3 hours before
NCZ 016-017-010245- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE WILMINGTON NC 1015 PM EDT SAT JUN 30 1990 AN ISOLATED THUNDERSTORM DEVELOPED OVER CRAVEN IN COASTAL NORTH CAROLINA. THIS STORM WAS OVER CHERRY POINT AND WAS MOIVNG SOUTHEAST AROUND 30 MPH. THE STORM IS PRODUCING VERY HEAVY RAIN .. DANGEROUS LIGHTNING AND WIND GUSTS TO 46 MPH. THIS STORM MAY ALSO PRODUCE SMALL HAIL. PEOPLE IN CRAVEN AND CARTERET COUNTIES AND BOATERS ALONG THE ADJACENT COASTAL WATERS SHOULD BE ALERT TO THIS POTENTIALLY DANGEROUS STORM. IF YOU ARE IN THE PATH OF THIS STORM ..SEEK SHELTER. BJ
Special weather statement, Jun 30, 10:28 PM EDT, 2 hours 49 minutes before
NCZ 016-017-010245- SPECIAL WEATHER STATEMENT .. CORRECTION NATIONAL WEATHER SERVICE WILMINGTON NC 1015 PM EDT SAT JUN 30 1990 AN ISOLATED THUNDERSTORM DEVELOPED OVER CRAVEN COUNTY IN COASTAL NORTH CAROLINA. THIS STORM WAS OVER CHERRY POINT AND WAS MOIVNG SOUTHEAST AROUND 30 MPH. THE STORM IS PRODUCING VERY HEAVY RAIN .. DANGEROUS LIGHTNING AND WIND GUSTS TO 46 MPH. THIS STORM MAY ALSO PRODUCE SMALL HAIL. PEOPLE IN CRAVEN AND CARTERET COUNTIES AND BOATERS ALONG THE ADJACENT COASTAL WATERS SHOULD BE ALERT TO THIS POTENTIALLY DANGEROUS STORM. IF YOU ARE IN THE PATH OF THIS STORM ..SEEK SHELTER. BJ ADDED COUNTY IN 1ST LINE
Special weather statement, Jun 30, 10:36 PM EDT, 2 hours 41 minutes before
NCZ002-003-010325- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE CAPE HATTERAS NC 1032 PM EDT SAT JUN 30 1990 AT 1025 THIS EVENING...WEATHER RADAR WAS TRACKING A STRONG THUNDERSTORM OVER SOUTHAMPTON COUNTY IN VIRGINIA. THIS THUNDERSTORM CONTINUES TO INTENSIFY AND MAY APPROACH SEVERE LIMITS AS IT MOVES INTO NORTHERN HERTFORD AND GATES COUNTIES IN NORTH CAROLINA DURING THE NEXT HOUR. PEOPLE IN THESE AREAS SHOULD BE ON THE LOOKOUT FOR STRONG GUSTY WINDS ...FREQUENT CLOUD TO GROUND LIGHTNING AND POSSIBLY HAIL FROM THIS STORM. HEAVY RAINS WILL ALSO BE A PROBLEM...POTENTIALLY CREATING LOCALIZED FLOODING CONDITIONS. DCH
The office that day
Everything else NWS Wilmington, NC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 1, 5:06 PM EDT | Severe Thunderstorm Warning | ILM | Sussex | 54 min |
| Jul 1, 5:26 PM EDT | Severe Thunderstorm Warning | ILM | Kent | 34 min |
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.