Alert archive / North Carolina / Severe Thunderstorm Warnings in 1992

Severe Thunderstorm Warning 39, NWS Blacksburg, VA

November 22, 1992Forsyth County, Yadkin County, North Carolina

NWS Blacksburg, VA issued this severe thunderstorm warning at Nov 22, 1992, 11:30 PM EST for Forsyth County, Yadkin County, North Carolina. It was in force for 45 min.

The area

The counties it named.

The facts

Issued: Nov 22, 1992, 11:30 PM EST (04:30 UTC)
Expired: Nov 23, 1992, 12:15 AM EST
In force: 45 min
Issued by: NWS Blacksburg, VA
Area: Whole counties

Counties Forsyth County, NC, Yadkin County, NC

The nearest sounding before it

Greensboro/Hi Pt, NC (KGSO), launched 00:00Z, 4.5 hours before the alert went out and 51 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 576 J/kg
Mixed-layer CIN: -37 J/kg
Mixed-layer LCL: 557 m above ground
0-6 km bulk shear: 60 kt
0-1 km storm-relative helicity: 274 m²/s²
0-3 km storm-relative helicity: 354 m²/s²
Significant tornado parameter: 1.0
Supercell composite: 4.5

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KGSO 230430
SVRGSO
NCC067-197-230515-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING 
NATIONAL WEATHER SERVICE GREENSBORO NC
1130 PM EST SUN NOV 22 1992

THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM 
WARNING EFFECTIVE UNTIL 1215 AM EST FOR PEOPLE IN THE FOLLOWING 
COUNTIES

   IN THE STATE OF NORTH CAROLINA
      FORSYTH...EASTERN YADKIN

AT 1129 PM RADAR SHOWED SEVERE THUNDERSTORMS IN DAVIE AND EASTERN
YADKIN COUNTIES MOVING NORTHEAST AT ABOUT 50 MPH.

IF YOU ARE IN AN AREA THREATENED BY THE STORM..GO TO A REINFORCED
SHELTER AND PREPARE FOR DAMAGING WINDS..LARGE HAIL..VERY HEAVY
DOWNPOURS AND FREQUENT DEADLY LIGHTNING.

A TORNADO WATCH IS ALSO IN EFFECT FOR THE WARNED AREA.
REMEMBER..SEVERE THUNDERSTORMS CAN AND OCCASIONALLY DO PRODUCE
TORNADOES WITH NO ADVANCE WARNING..SO BE ON THE LOOKOUT.

 IF THREATENING WEATHER APPROACHES..YOU SHOULD GO TO A SAFE PLACE
 IMMEDIATELY.  WHEN IT IS SAFE..ASK YOUR NEAREST LAW ENFORCEMENT
 AGENCY TO RELAY YOUR SEVERE WEATHER REPORT TO THE LOCAL NATIONAL
 WEATHER SERVICE OFFICE.

 RBN

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, Nov 22, 5:49 PM EST, 5 hours 41 minutes before

VAZ008-009-013>016-230100-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE ROANOKE VIRGINIA
645 PM EST SUN NOV 22 1992

...HEAVY DOWNPOURS AND SCATTERD THUNDERSTORMS OVER SOUTHWEST VIRGINIA...

AT 640 PM RADAR SHOWS SCATTERED THUNDERSTORMS IN PULASKI MONTGOMERY
AND CRAIG COUNTIES IN VIRGINIA. THESE THUNDERSTORMS ARE MOVING TO THE
NORTHEAST. ALSO AUTOMATIC RAIN GAUGES SHOW SOME HEAVY DOWNPOURS.

THESE THUNDERSTORMS AND OTHERS THAT DEVELOP COULD CAUSE STORNG GUSTY
WINDS AND DANGEROUS LIGHTNING. HEAVY DOWNPOURS COULD CAUSE SOME LOW
AREA FLOODING AND SMALL STREAM FLOODING. ANYONE IN THESE AREAS SHOULD
BE ON THE LOOKOUT IN CASE SOME FLOODING OCCURS.
END/CE

The office that day

Everything else NWS Blacksburg, VA issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Nov 22, 9:26 PM EST	Flash Flood Warning	RNK	Alleghany	3 hr
Nov 22, 10:50 PM EST	Severe Thunderstorm Warning	RNK	Iredell	25 min
Nov 22, 11:14 PM EST	Tornado Warning	RNK	Davie, Rowan	31 min
Nov 22, 11:43 PM EST	Tornado Warning	RNK	Davidson	32 min
Nov 23, 12:04 AM EST	Severe Thunderstorm Warning	RNK	Guilford, Rockingham, Stokes	56 min
Nov 23, 12:37 AM EST	Severe Thunderstorm Warning	RNK	Caswell	68 min
Nov 23, 12:51 AM EST	Tornado Warning	RNK	Davidson, Rowan	54 min
Nov 23, 1:25 AM EST	Severe Thunderstorm Warning	RNK	Alamance	35 min
Nov 23, 1:58 AM EST	Severe Thunderstorm Warning	RNK	Alamance, Caswell	47 min

Nearby

Severe Thunderstorm Warnings in North Carolina, 1992 Every severe thunderstorm warning in 1992

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.