Alert archive / North Carolina / Severe Thunderstorm Warnings in 1990

Severe Thunderstorm Warning 24, NWS Raleigh, NC

May 1, 1990Wayne County, Wilson County, North Carolina

NWS Raleigh, NC issued this severe thunderstorm warning at May 1, 1990, 9:05 PM EDT for Wayne County, Wilson County, North Carolina. It was in force for 55 min. 2 reports came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued
May 1, 1990, 9:05 PM EDT (01:05 UTC)
Expired
May 1, 1990, 10:00 PM EDT
In force
55 min
Issued by
NWS Raleigh, NC
Area
Whole counties

Counties Wayne County, NC, Wilson County, NC

The radar

The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.

What was reported inside it

TimeReportWhereRemark
May 1, 9:15 PM EDTThunderstorm Wind 0Wilson, NC
May 1, 9:15 PM EDTThunderstorm Wind 0Wayne, NC

NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in. Storm Data before 1996 records only tornadoes, thunderstorm wind and hail.

The nearest sounding before it

Greensboro/Hi Pt, NC (KGSO), launched 00:00Z, 1.1 hours before the alert went out and 185 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 1990-05-02Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 91 joules per kilogram.LCLLFCEL10008507005003002001001 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 1990-05-02The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -135 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
91 J/kg
Mixed-layer CIN
-533 J/kg
Mixed-layer LCL
1132 m above ground
0-6 km bulk shear
37 kt
0-1 km storm-relative helicity
-135 m²/s²
0-3 km storm-relative helicity
-62 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.7

Open this sounding in Storm Lab

The text

The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.

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, May 1, 7:36 PM EDT, 1 hour 29 minutes before
NCZ005-020100-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE RALEIGH/DURHAM, NC
730 PM EDT TUE MAY 1 1990

...STRONG THUNDERSTORMS MOVING INTO THE NORTHEAST PIEDMONT...

A SEVERE THUNDERSTORM WATCH IS IN EFFECT UNTIL MIDNIGHT FOR THE
NORTHEAST PIEDMONT AND MOST OTHER PORTIONS OF CENTRAL NORTH CAROLINA.
WEATHER RADAR AT 725 PM EDT SHOWED STRONG THUNDERSTORMS MOVING
SOUTHEAST AT 30 TO 35 MPH ACROSS CENTRAL DURHAM AND ORANGE COUNTIES
AND EXTREME NORTHWEST CHATHAM COUNTIES.  THESE STORMS HAVE HAD A
HISTORY OF HIGH WIND AND HAIL AS THEY HAVE COME ACROSS THE NORTHERN
PIEDMONT REGION.

AT THEIR CURRENT RATE OF MOVEMENT THESE THUNDERSTORMS WILL BE CROSSING
THE TRIANGLE AREA DURING THE TIME U_NTIL 9 PM.

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

RFG
Special weather statement, May 1, 7:48 PM EDT, 1 hour 17 minutes before
NCZ006-007-009-020130-

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREENSBORO NC
742 PM EDT TUE MAY 1 1990

...SEVERE THUNDERSTORM WATCH IN EFFECT UNTIL 12 MIDNIGHT EDT FOR THE NORTHERN
   FOOTHILLS AND NORTHWEST PIEDMONT OF NC...

AT 740 PM NATIONAL WEATHER SERVICE RADAR SHOWED A LINE OF THUNDERSTORMS...SOME
WITH VERY HEAVY RAIN...EXTENDING FROM EXTREME SOUTHERN IREDELL COUNTY
NORTHEASTWARD THROUGH THE SOUTHERN PARTS OF ROWAN AND DAVIDSON COUNTIES
TO CENTRAL RANDOLPH COUNTY ALL OF THE NORTHWEST PIEDMONT. THE HEAVIEST STORMS
WERE JUST TO THE SOUTHWEST OF SALISBURY IN ROWAN COUNTY AND THE DENTON AREA
OF DAVIDSON COUNTY. MOVEMENT WAS TO THE EAST AT 30 MPH.

PERSONS IN SOUTHERN ROWAN...SOUTHERN DAVIDSON AND RANDOLPH COUNTIES SHOULD BE
ON THE LOOKOUT FOR STRONG GUSTY WINDS...VERY HEAVY DOWNPOURS AND FREQUENT.
LIGHTNING. THE INTENSITY OF THESE STORMS HAVE DECREASED SOMEWHAT IN THE LAST
HALF HOUR. SEEK SHELTER WHEN THE STORMS APPROAChH.

GR
Local storm report, May 1, 8:04 PM EDT, 1 hour 1 minute before
STORM REPORT
NATIONAL WEATHER SERVICE RALEIGH/DURHAM, NC
802 PM EDT TUE MAY 01 1990

TIME           EVENT
 758 PM EDT    ESTIMATED WIND GUSTS 60 MPH IN CARY REPORTED BY AMATEUR
               RADIO OPERATORS.

758PM EDT      MEASURED WIND GUSTS 48 MPH AT NWS RALEIGH-DURHAM APRT.

RFG
Local storm report, May 1, 8:11 PM EDT, 54 minutes before
STORM REPORT
NATIONAL WEATHER SERVICE RALEIGH/DURHAM, NC
809 PM EDT TUE MAY 01 1990

TIME           EVENT
 8:05 PM EDT   TREE BLOWN DOWN IN DOWNTOWN RALEIGH
               WINDS ESTIMATED 45 MPH IN NORTH RALEIGH
               REPORTED BY WAKE COUNTY SHERIFFS OFFICE

RFG
Local storm report, May 1, 8:31 PM EDT, 34 minutes before
STORM REPORT
NATIONAL WEATHER SERVICE  GREENSBORO NC
830 PM EDT TUE MAY 1 1990

ATTN SELS...

TIME             EVENT

450 PM EDT       11/2 HAIL IN BOOMER IN THE SOUTHWEST PART OF WILKES COUNTY.

521 PM EDT       MARBLE SIZE HAIL IN SUGARLOAF AREA OF NORTHEAST ALEXANDER
                 COUNTY.

525 PM EDT       MARBLE SIZE HAIL IN REIDSVILLE OF EASTERN ROCKINGHAM COUNTY.

530 PM EDT       QUARTER SIZE HAIL IN DANBURY OF CENTRAL STOKES COUNTY.

635 PM EDT       HAM RADIO OPERATOR REPORTS WIND GUSTS OF 50 TO 60 MPH IN
                 HIGH POINT IN GUILFORD COUNTY.
635 PM EDT       MARBLE SIZE HAIL REPORTED BY WEATHER SERVICE EMPLOYEE
                 IN THE CITY OF GREENSBORO

645 PM EDT       GOLF BALL SIZE HAIL IN GIBSONVILLE OF EASTERN GUILFORD
                 COUNTY REPORTED BY A HAM RADIO OPERATOR.

720 PM EDT       POWER LINE DOWN OVER MANY PARTS OF SOUTHERN IREDELL
                 COUNTY.

GR
Local storm report, May 1, 8:53 PM EDT, 12 minutes before
STORM REPORT
NATIONAL WEATHER SERVICE  GREENSBORO NC
850 PM EDT TUE MAY 1 1990

ATTN SELS...

TIME             EVENT

730 PM EDT       8 TO 10 INCH DIAMETER/40 FOOT TALL TREE DOWN IN THE
                 SOUTHEAST SECTION OF SALISBURY IN ROWAN COUNTY REPORTED
                 BY COOPERATIVE WEATHER SPOTTER. TRAFFIC HAD TO BE REROUTED.
                 POWER LINES DOWN IN THE CITY. ONE CAUSED A FIRE.

GR

The office that day

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

IssuedProductOfficeCountiesLasted
May 1, 8:24 PM EDTSevere Thunderstorm WarningRAHHarnett66 min
May 1, 8:38 PM EDTSevere Thunderstorm WarningRAHJohnston52 min
May 1, 9:40 PM EDTSevere Thunderstorm WarningRAHGreene, Lenoir65 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.