Alert archive / North Carolina / Flash Flood Warnings in 1992

Flash Flood Warning 25, NWS Blacksburg, VA

April 21, 1992Surry County, North Carolina

NWS Blacksburg, VA issued this flash flood warning at Apr 21, 1992, 5:14 PM EDT for Surry County, North Carolina. It was in force for 3 hr.

The area

The counties it named.

The facts

Issued: Apr 21, 1992, 5:14 PM EDT (21:14 UTC)
Expired: Apr 21, 1992, 8:15 PM EDT
In force: 3 hr
Issued by: NWS Blacksburg, VA
Area: Whole counties

County Surry County, NC

The nearest sounding before it

Huntington/Tri S, WV (KHTS), launched 12:00Z, 9.2 hours before the alert went out and 270 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: 67 J/kg
Mixed-layer CIN: -95 J/kg
Mixed-layer LCL: 1231 m above ground
0-6 km bulk shear: 45 kt
0-1 km storm-relative helicity: 107 m²/s²
0-3 km storm-relative helicity: 130 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.2

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KGSO 212114
FFWGSO
NCC171-220015-

BULLETIN - IMMEDIATE BROADCAST REQUESTED/EBS ACTIVATION REQUESTED 
FLASH FLOOD WARNING 
NATIONAL WEATHER SERVICE GREENSBORO NC
514 PM EDT TUE APR 21 1992

THE NATIONAL WEATHER SERVICE HAS ISSUED A FLASH FLOOD WARNING 
EFFECTIVE UNTIL 815 PM EDT FOR PEOPLE IN THE FOLLOWING COUNTY

   IN THE STATE OF NORTH CAROLINA
      SURRY

AT 510 PM THE SHERIFF DEPARTMENT IN SURRY COUNTY REPORTED THEY WERE
CLOSING OFF NUMEROUS ROADS ALONG THE YADKIN RIVER IN THE SOUTHERN
PART OF THE COUNTY.  IN THE NORTH..TRIBUTARIES OF THE ARARAT RIVER
WERE BEGINNING TO COME OUT OF THEIR BANKS.  IN THE NORTHWEST PART
OF THE COUNTY SOME MUDSLIDES WERE CLOSING ROADS IN THE LOW GAP
AREA.

A FLASH FLOOD WARNING MEANS FLOODING IS OCCURRING OR IS IMMINENT.
PEOPLE IN THE WARNED AREA SHOULD TAKE IMMEDIATE ACTION TO PROTECT
LIFE AND PROPERTY.

DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE WATER COVERS THE ROADWAY.
THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS SAFELY.
VEHICLES CAUGHT IN RISING WATER SHOULD BE ABANDONED IMMEDIATELY.
REMEMBER..MOST FLASH FLOOD DEATHS OCCUR IN AUTOMOBILES.

 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 flash flood 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, Apr 21, 12:39 PM EDT, 4 hours 35 minutes before

VAZ009-008-212100

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE LYNCHBURG VA
1230 PM EDT TUE APR 21 1992

...A FLASH FLOOD WATCH HAS BEEN ISSUED UNTIL 2 AM WEDNESDAY FOR THE
FOLLOWING COUNTIES...AMHERST...BEDFORD...CAMPBELL...APPOMATTOX...
PITTSYLVANIA...HALIFAX AND CHARLOTTE AND THE INDEPENDENT CITIES OF
LYNCHBURG...DANVILLE...BEDFORD AND SOUTH BOSTON.

PEOPLE LIVING IN THE FLASH FLOOD AREAS SHOULD BE ALERT TO THE
POSSIBILITY OF RISING STREAMS AND INUNDATED ROADWAYS. BE PREPARED TO
MOVE TO HIGHER GROUND IF FLASH FLOODING OCCURS.

STAY TUNED TO NOAA WEATHER RADIO OR LOCAL COMMERCIAL RADIO AND TV
STATIONS FOR UPDATES. KEEP ALERT AND REPORT ANY FLOODING TO YOUR
LOCAL WEATHER OFFICE O!R TO LOCAL LAW ENFORCEMENT FOR RELAY TO THE
NATIONAL WEATHER SERVICE.

MONROE

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 20, 9:27 PM EDT	Flash Flood Warning	RNK	Alleghany	3 hr
Apr 20, 11:44 PM EDT	Flash Flood Warning	RNK	Alleghany	3 hr
Apr 21, 5:53 PM EDT	Flash Flood Warning	RNK	Davidson, Guilford	3 hr
Apr 21, 6:07 PM EDT	Flash Flood Warning	RNK	Davidson, Guilford	3 hr
Apr 21, 7:11 PM EDT	Flash Flood Warning	RNK	Iredell	2 hr
Apr 21, 7:57 PM EDT	Flash Flood Warning	RNK	Randolph	3 hr

Nearby

Flash Flood Warnings in North Carolina, 1992 Every flash flood 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.