Alert archive / North Carolina / Severe Thunderstorm Warnings in 1990

Severe Thunderstorm Warning 2, NWS Raleigh, NC

February 10, 1990Durham County, North Carolina

NWS Raleigh, NC issued this severe thunderstorm warning at Feb 10, 1990, 10:01 AM EST for Durham County, North Carolina. It was in force for 29 min.

The area

The counties it named.

The facts

Issued
Feb 10, 1990, 10:01 AM EST (15:01 UTC)
Expired
Feb 10, 1990, 10:30 AM EST
In force
29 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 12:00Z, 3.0 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 12:00Z on 1990-02-10Temperature 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°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Greensboro/Hi Pt, NC at 12:00Z on 1990-02-10The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 368 square meters per square second.1939587897Sfc1 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
NaN m above ground
0-6 km bulk shear
65 kt
0-1 km storm-relative helicity
368 m²/s²
0-3 km storm-relative helicity
365 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 KRDU 101505
SVRRDU
NCC063-101530-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE RALEIGH NC
1001 AM EST SAT FEB 10 1990
 
THE NATIONAL WEATHER SERVICE IN RALEIGH HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 1030 AM EST
FOR PEOPLE IN THE FOLLOWING COUNTY...
 
IN NORTH CENTRAL NORTH CAROLINA
          ...DURHAM
 
WEATHER RADAR AT 1000 AM SHOWED STRONG THUNDERSTORMS MOVING
NORTHEAST INTO DURHAM COUNTY. THE STORMS ARE MOVING AT ABOUT 45 TO 50
MPH. DAMAGING WINDS ARE POSSIBLE WITH THIS STORM.
 
 
ALTHOUGH NO TORNADOES HAVE BEEN DETECTED WITH THIS STORM...A TORNADO
WATCH REMAINS IN EFFECT. TORNADOES CAN DEVELOP WITHOUT WARNING FROM
A SEVERE 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, Feb 10, 7:38 AM EST, 2 hours 23 minutes before
NCZ006-007-009-101330-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREENSBORO NC
737 AM EST SAT FEB 10 1990

...THUNDERSTORMS WITH HEAVY RAIN MOVING ACROSS THE NORTHERN
   FOOTHILLS OF NORTH CAROLINA THIS MORNING...

AT 730 AM NATIONAL WEATHER SERVICE RADAR SHOWED THUNDERSTORMS WITH
HEAVY RAIN OVER OVER WESTERN WILKES AND WESTERN SURRY COUNTIES IN THE
NORTHERN FOOTHILLS OF NORTH CAROLINA. ELSEWHERE...THUNDERSTORMS WERE
OCCURRING OVER ROWAN AND SOUTHERN IREDELL COUNTIES IN THE NORTHWEST PIEDMONT.
THE STORMS WERE MOVING NORTHEAST AT ABOUT 40 MPH.

ALONG WITH THE HEAVY RAIN THESE THUNDERSTORMS MAY PRODUCE...FREQUENT
DANGEROUS LIGHTNING...STRONG GUSTY WINDS AND LOCAL FLOODING OF
STREAMS AND ROADS.

IF YOU ARE IN THE PATH OF THESE THUNDERSTORMS...SEEK SAFE SHELTER
WHEN THE STORMS APPROACH.

LISTEN TO NOAA WEATHER RADIO...OR YOUR FAVORITE LOCAL RADIO OR
TELEVISION STATION FOR LATER STATEMENTS OR POSSIBLE WARNINGS.

WHB
Special weather statement, Feb 10, 9:15 AM EST, 46 minutes before
NCZ006-007-101400-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREENSBORO NC
900 AM EST SAT FEB 10 1990

...TORNADO WATCH UNTIL NOON...

...THUNDERSTORMS WITH HEAVY RAIN MOVING ACROSS THE NORTHERN
   FOOTHILLS NORTHWEST PIEDMONT OF NORTH CAROLINA THIS MORNING...

AT 900 AM NATIONAL WEATHER SERVICE RADAR SHOWED THUNDERSTORMS WITH
HEAVY RAIN OVER SOUTHERN IRDELL COUNTY. THE REST OF THD NORTHERN
FOOTHILLS AND NORTHWEST PIEDMONT SHOWS LIGHT TO MODERATE SHOWERS
WITH POSSIBLE ISOLATED THUNDERSTORMS. THESE STORMS ARE MOVING EAST
AT ABOUT 45 MPH.

ALONG WITH THE HEAVY RAIN THESE THUNDERSTORMS MAY PRODUCE...FREQUENT
DANGEROUS LIGHTNING...STRONG GUSTY WINDS AND LOCAL FLOODING OF
STREAMS AN)D ROADS.

LISTEN TO NOAA WEATHER RADIO...OR YOUR FAVORITE LOCAL RADIO OR
TELEVISION STATION FOR LATER STATEMENTS OR POSSIBLE WARNINGS.

SAS

The office that day

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

IssuedProductOfficeCountiesLasted
Feb 10, 10:45 AM ESTSevere Thunderstorm WarningRAHWarren30 min

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.