Alert archive / North Carolina / Severe Thunderstorm Warnings in 1997

Severe Thunderstorm Warning 102, NWS Raleigh, NC

July 24, 1997Guilford County, North Carolina

NWS Raleigh, NC issued this severe thunderstorm warning at Jul 24, 1997, 4:54 PM EDT for Guilford County, North Carolina. It was in force for 36 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Jul 24, 1997, 4:54 PM EDT (20:54 UTC)
Expired
Jul 24, 1997, 5:30 PM EDT
In force
36 min
Issued by
NWS Raleigh, NC
Area
Whole counties

County Guilford County, NC

The radar

The Roanoke radar (KFCX), 114 km from the middle of the area, began a volume at 20:55 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

The nearest sounding before it

Greensboro/Hi Pt, NC (KGSO), launched 12:00Z, 8.9 hours before the alert went out and 10 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 1997-07-24Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 150 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 12:00Z on 1997-07-24The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -6 square meters per square second.1939Sfc1 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
150 J/kg
Mixed-layer CIN
-22 J/kg
Mixed-layer LCL
541 m above ground
0-6 km bulk shear
18 kt
0-1 km storm-relative helicity
-6 m²/s²
0-3 km storm-relative helicity
51 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 242056 RRA
SVRRDU
NCC081-242130-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE RALEIGH/DURHAM NC
454 PM EDT THU JUL 24 1997
 
THE NATIONAL WEATHER SERVICE IN RALEIGH/DURHAM HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  530 PM EDT
FOR PEOPLE IN THE FOLLOWING LOCATION...
 
IN NORTH CENTRAL NORTH CAROLINA
 
   ...GUILFORD COUNTY
 
A SEVERE THUNDERSTORM WITH LARGE HAIL WAS OVER NORTHWEST GUILFORD COUNTY
MOVING SOUTHEAST AT 20 MPH. SKYWARN SPOTTERS REPORTED 1 INCH HAIL WITH
THIS STORM AT 451 PM. ANOTHER STRONG STORM WAS JUST EAST OF GREENSBORO
ALSO MOVING SOUTHEAST AT 20 MPH.
 
 
PEOPLE SHOULD BE ESPECIALLY ALERT FOR LARGE HAIL AND DAMAGING WIND.
FREQUENT LIGHTNING AND LOCALLY HEAVY RAIN CAN POSE A DANGER WITH ANY
THUNDERSTORM.  SEEK SHELTER IMMEDIATELY AND REPORT DAMAGE TO
EMERGENCY OFFICIALS FOR RELAY TO THE NATIONAL WEATHER SERVICE.
 
 
 
&

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, Jul 24, 11:00 AM EDT, 5 hours 54 minutes before
NCZ007>011-021>028-038>043-073>078-083>086-088>089-250000-

SEVERE WEATHER OUTLOOK FOR CENTRAL NORTH CAROLINA
NATIONAL WEATHER SERVICE RALEIGH NC
1100 AM EDT THU JUL 24 1997

...SLIGHT RISK OF SEVERE STORMS OVER NORTHEAST PORTIONS OF CENTRAL NORTH
CAROLINA THROUGH EARLY AFTERNOON...

(THE SEVERE WEATHER OUTLOOK FOR CENTRAL NORTH CAROLINA APPLIES ONLY TO
THE COUNTIES LISTED AT THE END OF TEXT.)

THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS OVER NORTHEAST SECTIONS
OF CENTRAL NORTH CAROLINA THROUGH EARLY THIS AFTERNOON. THE AREA OF
CONCERN CONSISTS OF HALIFAX...EDGECOMBE...NASH...WILSON...WARREN AND
FRANKLIN COUNTIES. THE MAJOR SEVERE THREAT IS FROM VERY STRONG WINDS AS
THE REMNANTS OF HURRICANE DANNY MOVE NORTHEAST ACROSS THE AREA. THERE
IS ALSO A STRONG POSSIBILITY OF FLASH FLOODING AS RAINFALL AMOUNTS FROM
3 TO 5 INCHES ARE LIKELY. AN ISOLATED TORNADO IS ALSO A POSSIBILITY.

THE CIRCULATION ASSOCIATED WITH THE REMNANTS OF HURRICANE DANNY
WILL MOVE NORTHEAST THROUGH NORTHEAST NORTH CAROLINA EARLY THIS
AFTERNOON. VERY HEAVY RAINBANDS WILL PRODUCE TORRENTIAL DOWNPOURS.
AS MUCH AS ONE TO THREE INCHES OF RAIN IN AN HOUR IS POSSIBLE... AND
THIS CAN EASILY LEAD TO PONDING OF WATER ON ROADS AND FLOODING OF LOW
LYING AREAS. ALSO... STRONG WINDS A FEW THOUSAND FEET ABOVE THE GROUND
MAY COME DOWN TO THE SURFACE AND LEAD TO BRIEF BUT GUSTY AND DAMAGING
WINDS.

SPOTTERS...ESPECIALLY NORTH AND EAST OF THE TRIANGLE...ARE ENCOURAGED
TO RELAY REPORTS OF SIGNIFICANT WEATHER TO THE NATIONAL WEATHER
SERVICE.

STAY TUNED TO NOAA WEATHER RADIO FOR LATER STATEMENTS AND ADDITIONAL
WEATHER INFORMATION.

MLM
*********************************************************************

ALAMANCE          ANSON              CHATHAM            CUMBERLAND
PERSON            RANDOLPH           RICHMOND           SAMPSON
SCOTLAND          STANLY             VANCE              WAKE
WARREN            WAYNE              WILSON
Special weather statement, Jul 24, 11:02 AM EDT, 5 hours 52 minutes before
NCZ007>011-021>028-038>043-073>078-083>086-088>089-250000-

SEVERE WEATHER OUTLOOK FOR CENTRAL NORTH CAROLINA
NATIONAL WEATHER SERVICE RALEIGH NC
1100 AM EDT THU JUL 24 1997

...SLIGHT RISK OF SEVERE STORMS OVER NORTHEAST PORTIONS OF CENTRAL NORTH
CAROLINA THROUGH EARLY AFTERNOON...

(THE SEVERE WEATHER OUTLOOK FOR CENTRAL NORTH CAROLINA APPLIES ONLY TO
THE COUNTIES LISTED AT THE END OF TEXT.)

THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS OVER NORTHEAST SECTIONS
OF CENTRAL NORTH CAROLINA THROUGH EARLY THIS AFTERNOON. THE AREA OF
CONCERN CONSISTS OF HALIFAX...EDGECOMBE...NASH...WILSON...WARREN AND
FRANKLIN COUNTIES. THE MAJOR SEVERE THREAT IS FROM VERY STRONG WINDS AS
THE REMNANTS OF HURRICANE DANNY MOVE NORTHEAST ACROSS THE AREA. THERE
IS ALSO A STRONG POSSIBILITY OF FLASH FLOODING AS RAINFALL AMOUNTS FROM
3 TO 5 INCHES ARE LIKELY. AN ISOLATED TORNADO IS ALSO A POSSIBILITY.

THE CIRCULATION ASSOCIATED WITH THE REMNANTS OF HURRICANE DANNY
WILL MOVE NORTHEAST THROUGH NORTHEAST NORTH CAROLINA EARLY THIS
AFTERNOON. VERY HEAVY RAINBANDS WILL PRODUCE TORRENTIAL DOWNPOURS.
AS MUCH AS ONE TO THREE INCHES OF RAIN IN AN HOUR IS POSSIBLE... AND
THIS CAN EASILY LEAD TO PONDING OF WATER ON ROADS AND FLOODING OF LOW
LYING AREAS. ALSO... STRONG WINDS A FEW THOUSAND FEET ABOVE THE GROUND
MAY COME DOWN TO THE SURFACE AND LEAD TO BRIEF BUT GUSTY AND DAMAGING
WINDS.

SPOTTERS...ESPECIALLY NORTH AND EAST OF THE TRIANGLE...ARE ENCOURAGED
TO RELAY REPORTS OF SIGNIFICANT WEATHER TO THE NATIONAL WEATHER
SERVICE.

STAY TUNED TO NOAA WEATHER RADIO FOR LATER STATEMENTS AND ADDITIONAL
WEATHER INFORMATION.

MLM
*********************************************************************

AjLAMANCE          ANSON              CHATHAM            CUMBERLAND
PERSON            RANDOLPH           RICHMOND           SAMPSON
SCOTLAND          STANLY             VANCE              WAKE
WARREN            WAYNE              WILSON

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 24, 2:00 AM EDTFlash Flood WarningRAHAnson, Montgomery, Moore, Richmond, Stanly6 hr
Jul 24, 2:00 AM EDTFlash Flood WarningRAHHoke, Scotland6 hr
Jul 24, 6:31 AM EDTFlash Flood WarningRAHHarnett2 hr
Jul 24, 6:51 AM EDTFlash Flood WarningRAHLee69 min
Jul 24, 7:33 AM EDTFlash Flood WarningRAHWake87 min
Jul 24, 8:05 AM EDTFlash Flood WarningRAHFranklin, Granville, Vance3 hr
Jul 24, 8:05 AM EDTFlash Flood WarningRAHWarren3 hr
Jul 24, 8:38 AM EDTFlash Flood WarningRAHDurham2 hr
Jul 24, 9:26 AM EDTFlash Flood WarningRAHEdgecombe, Halifax, Nash, Wilson3 hr
Jul 24, 10:10 AM EDTFlash Flood WarningRAHWake8 hr
Jul 24, 11:39 AM EDTFlash Flood WarningRAHEdgecombe, Nash, Wilson2 hr
Jul 24, 11:39 AM EDTFlash Flood WarningRAHHalifax2 hr
Jul 24, 5:31 PM EDTSevere Thunderstorm WarningRAHAlamance14 min
Jul 24, 6:23 PM EDTFlash Flood WarningRAHSampson2 hr

Nearby

Severe Thunderstorm Warnings in North Carolina, 1997Every severe thunderstorm warning in 1997

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; radar from the NEXRAD Level II archive.