Alert archive / North Carolina / Severe Thunderstorm Warnings in 1990

Severe Thunderstorm Warning 4, NWS Newport/Morehead City, NC

May 29, 1990Pasquotank County, Perquimans County, North Carolina

NWS Newport/Morehead City, NC issued this severe thunderstorm warning at May 29, 1990, 9:06 AM EDT for Pasquotank County, Perquimans County, North Carolina. It was in force for 69 min.

The area

The counties it named.

The facts

Issued
May 29, 1990, 9:06 AM EDT (13:06 UTC)
Expired
May 29, 1990, 10:15 AM EDT
In force
69 min
Issued by
NWS Newport/Morehead City, NC
Area
Whole counties

Counties Pasquotank County, NC, Perquimans County, NC

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

Cape Hatteras, NC (KHAT), launched 12:00Z, 1.1 hours before the alert went out and 130 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, Cape Hatteras, NC at 12:00Z on 1990-05-29Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 4103 joules per kilogram.LCLEL10008507005003002001001 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, Cape Hatteras, NC at 12:00Z on 1990-05-29The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 112 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
4103 J/kg
Mixed-layer CIN
-1 J/kg
Mixed-layer LCL
631 m above ground
0-6 km bulk shear
26 kt
0-1 km storm-relative helicity
112 m²/s²
0-3 km storm-relative helicity
138 m²/s²
Significant tornado parameter
1.8
Supercell composite
9.7

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KHAT 291309
SVRHAT
NCC139-143-291415-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE CAPE HATTERAS NC
906 AM EDT TUE MAY 29 1990
 
THE NATIONAL WEATHER SERVICE IN CAPE HATTERAS HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 1015 AM EDT
FOR PEOPLE IN THE FOLLOWING COUNTIES...
 
IN NORTHEAST NORTH CAROLINA
          ...PASQUOTANK...PERQUIMANS
 
RADAR INDICATED A THUNDERSTORM CAPABLE OF PRODUCING SEVERE WEATHER
INCLUDING STRONG GUSTY WINDS...HAIL...AND TORRENTIAL RAINS. THIS STORM
WAS LOCATED OVER THE WESTERN ALBEMARLE SOUND AND JUST BEGINNING TO
MOVE INTO SOUTHERN PERQUIMANS 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 North Carolina, 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.