Alert archive / North Carolina / Severe Thunderstorm Warnings in 1990

Severe Thunderstorm Warning 35, NWS Raleigh, NC

June 18, 1990Durham County, North Carolina

NWS Raleigh, NC issued this severe thunderstorm warning at Jun 18, 1990, 9:49 PM EDT for Durham County, North Carolina. It was in force for 41 min.

The area

The counties it named.

The facts

Issued
Jun 18, 1990, 9:49 PM EDT (01:49 UTC)
Expired
Jun 18, 1990, 10:30 PM EDT
In force
41 min
Issued by
NWS Raleigh, NC
Area
Whole counties

County Durham 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

Greensboro/Hi Pt, NC (KGSO), launched 00:00Z, 1.8 hours before the alert went out and 92 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, Greensboro/Hi Pt, NC at 00:00Z on 1990-06-19Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2316 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, Greensboro/Hi Pt, NC at 00:00Z on 1990-06-19The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 88 square meters per square second.193958Sfc1 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
2316 J/kg
Mixed-layer CIN
-7 J/kg
Mixed-layer LCL
1240 m above ground
0-6 km bulk shear
28 kt
0-1 km storm-relative helicity
88 m²/s²
0-3 km storm-relative helicity
167 m²/s²
Significant tornado parameter
0.0
Supercell composite
4.3

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KRDU 190151
SVRRDU
NCC063-190230-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE RALEIGH NC
949 PM EDT MON JUN 18 1990
 
THE NATIONAL WEATHER SERVICE IN RALEIGH HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 1030 PM EDT
FOR PEOPLE IN THE FOLLOWING LOCATION...
 
IN NORTH CENTRAL NORTH CAROLINA
 
   ...DURHAM COUNTY
 
AT 947 PM EDT WEATHER SERVICE RADAR SHOWED A SEVERE THUNDERSTORM ON
THE DURHAM-ORANGE COUNTY LINE JUST NORTHWEST OF THE CITY OF DURHAM.
THIS STORM WAS MOVING SOUTHEAST AT 30 MPH AND WILL MOVE OVER THE CITY
OF DURHAM.
 
PEOPLE IN THE PATH OF THIS STORM SHOULD BE ALERT FOR LARGE HAIL AND
DAMAGING WINDS. FREQUENT LIGHTNING AND LOCALLY HEAVY RAIN CAN OCCUR
WITH ANY THUNDERSTORM.

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 18, 6:03 PM EDT, 3 hours 46 minutes before
NCZ003>005-014-015-182300-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE RALEIGH/DURHAM, NC
605 PM EDT MON JUN 18 1990

...SEVERE THUNDERSTORM WATCH IN EFFECT FOR NORTH CENTRAL NORTH
   CAROLINA UNTIL 900 PM EDT THIS EVENING...

AT 550 PM EDT NATIONAL WEATHER SERVICE RADAR SHOWED STRONG
THUNDERSTORMS IN SOUTH CENTRAL VIRGINIA MOVING SOUTHEAST AT 35 MPH.
THE STRONGEST STORMS WERE LOCATED IN VIRGINIA JUST NORTH OF THE PERSON
COUNTY-GRANVILLE COUNTY LINE AND EXTENDED EAST ACROSS CLARKSVILLE AND
SOUTH HILL VIRGINIA.

THIS SAME AREA OF THUNDERSTORMS PRODUCED WIND GUSTS TO 80 MPH AND
QUARTER INCH HAIL WHEN THEY PASSED THROUGH VOLENS VIRGINIA...JUST NORTH
OF SOUTH BOSTON VA AROUND 435 PM. THESE STORMS WERE MOVING SOUTHEAST AT
35 MPH. THEY WILL BE AFFECTING THE KERR LAKE AREA, NORTHERN GRANVILLE,
NORTHERN VANCE, AND NORTHERN WARREN COUNTIES BETWEEN NOW AND 700 PM
THIS EVENING.

BOATERS AND OTHER PERSONS IN AND AROUND KERR LAKE SHOULDF PREPARE
IMMEDIATELY FOR THE POSSIBILITY OF STRONG GUSTY WINDS.

LISTEN TO LOCAL RADIO..TV..OR WEATHER RADIO FOR LATER STATEMENTS OR
POSSIBLE WARNINGS.

HLW
Special weather statement, Jun 18, 7:20 PM EDT, 2 hours 29 minutes before
NCZ003>005-190015-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE RALEIGH/DURHAM, NC
715 PM EDT MON JUN 18 1990

...SEVERE THUNDERSTORM WATCH IN EFFECT FOR NORTH CENTRAL NORTH
   CAROLINA UNTIL 900 PM EDT THIS EVENING...

AT 700 PM EDT NATIONAL WEATHER SERVICE RADAR SHOWED STRONG
THUNDERSTORMS FROM WESTERN HALIFAX COUNTY WEST ACROSS NORTHERN
FRANKLIN COUNTY AND SOUTHERN WARREN, VANCE AND GRANVILLE COUNTIES.
THE STRONGEST STORMS WERE IN SOUTHERN WARREN COUNTY SOUTH OF INEZ, IN
NORTHERN FRANKLIN NORTH OF FRANKLINTON, AND SOUTHERN GRANVILLE NORTH
OF CREEDMOOR.  ANOTHER STRONG THUNDERSTORM CELL WAS LOCATED JUST
SOUTH OF ROXBORO.

THE STORMS WERE MOVING SOUTHEAST AT ABOUT 40 MPH. THESE THUNDERSTORMS
WILL BE AFFECTING THE NORTHERN PORTION OF THE NORTHERN COASTAL PLAIN
AND PORTIONS OF THE TRIANGLE AREA BETWEEN NOW AND 830 THIS EVENING.

THE SEVERE THUNDERSTORM WARNING ISSUED EARLIER FOR VANCE COUNTY HAS
EXPIRED. ALTHOUGH NO SEVERE WEATHER HAS BEEN REPORTED TO THE NATIONAL
WEATHER SERVICE, A WIND GUST TO 38 MPH WAS OBSERVED 2 MILES NORTHEAST
OF HENDERSON.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 900 PM EDT FOR
THE NORTHEAST PIEDMONT AND MUCH OF THE NORTHERN COASTAL PLAIN OF
NORTH CAROLINA.

LISTEN TO LOCAL RADIO..TV..OR WEATHER RADIO FOR LATER STATEMENTS OR
POSSIBLE WARNINGS.

HLW
Special weather statement, Jun 18, 9:20 PM EDT, 29 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE RALEIGH/DURHAM, NC
915 PM EDT MON JUN 18 1990

...NORTH CAROLINA SKYWARN OUTLOOK...

THERE IS A SLIGHT CHANCE OF SEVERE THUNDERSTORMS...WITH LARGE HAIL AN_D
DAMAGING WINDS OVER ALL EXCEPT SOUTHEAST SECTIONS OF NORTH CAROLINA
DURING THE REMAINDER OF TONIGHT.

JFB

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.