Alert archive / North Carolina / Severe Thunderstorm Warnings in 1990

Severe Thunderstorm Warning 93, NWS Raleigh, NC

October 23, 1990Wake County, North Carolina

NWS Raleigh, NC issued this severe thunderstorm warning at Oct 23, 1990, 4:46 AM EDT for Wake County, North Carolina. It was in force for 44 min.

The area

The counties it named.

The facts

Issued
Oct 23, 1990, 4:46 AM EDT (08:46 UTC)
Expired
Oct 23, 1990, 5:30 AM EDT
In force
44 min
Issued by
NWS Raleigh, NC
Area
Whole counties

County Wake 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, 8.8 hours before the alert went out and 117 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 1990-10-23Temperature 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 00:00Z on 1990-10-23The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 156 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
36 kt
0-1 km storm-relative helicity
156 m²/s²
0-3 km storm-relative helicity
233 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 230846
SVRRDU
NCC183-230930-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE RALEIGH/DURHAM NC
446 AM EDT TUE OCT 23 1990
 
THE NATIONAL WEATHER SERVICE IN RALEIGH/DURHAM HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  530 AM EDT
FOR PEOPLE IN THE FOLLOWING LOCATION...
 
IN NORTH CENTRAL NORTH CAROLINA
 
   ...WAKE COUNTY
 
AT 435 AM NUMEROUS TREES WERE UPROOTED BY STRONG WINDS ASSOCIATED
WITH A SEVERE THUNDERSTORM AS IT MOVED NEAR ANGIER IN NORTHERN HARNETT
THE WAKE COUNTY LINE. THIS THUNDERSTORM WAS MOVING NORTH NORTHEAST AT
25 MPH.
 
 
 
THIS SLOW MOVING THUNDERSTORM MAY ALSO CAUSE FLOODING OF SMALL
STREAMS...LOW AREAS...AND UNDERPASSES.6

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

Local storm report, Oct 23, 4:38 AM EDT, 8 minutes before
STORM REPORT
NATIONAL WEATHER SERVICE RALEIGH/DURHAM, NC
438 AM EDT TUE OCT 23 1990

TIME           EVENT
 310 AM EDT    HOKE COUNTY SHERIFFS OFFICE...ROOF BLOWN OFF FRAME HOUSE
               AND TWO MOBILE HOMES SHIFTED OFF FOUNDATIONS WITH
               NUMEROUS 2-3 FT DIAMETER TREES DOWN IN A 4 MILE SQUARE
               AREA. DAMAGE OCCURRED IN NORTHEAST HOKE COUNTY IN PUPPY
               CREEK AREA NORTHEAST OF RAEFORD.

KK

The office that day

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

IssuedProductOfficeCountiesLasted
Oct 23, 5:05 AM EDTSevere Thunderstorm WarningRAHJohnston40 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.