Alert archive / North Carolina / Flash Flood Warnings in 1990

Flash Flood Warning 20, NWS Greenville-Spartanburg, SC

March 17, 1990Watauga County, North Carolina

NWS Greenville-Spartanburg, SC issued this flash flood warning at Mar 17, 1990, 3:49 AM EST for Watauga County, North Carolina. It was in force for 2 hr.

The area

The counties it named.

The facts

Issued
Mar 17, 1990, 3:49 AM EST (08:49 UTC)
Expired
Mar 17, 1990, 6:15 AM EST
In force
2 hr
Issued by
NWS Greenville-Spartanburg, SC
Area
Whole counties

County Watauga 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 162 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 1990-03-17Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 162 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 1990-03-17The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 186 square meters per square second.19395878Sfc1 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
162 J/kg
Mixed-layer CIN
-13 J/kg
Mixed-layer LCL
949 m above ground
0-6 km bulk shear
50 kt
0-1 km storm-relative helicity
186 m²/s²
0-3 km storm-relative helicity
298 m²/s²
Significant tornado parameter
0.1
Supercell composite
0.9

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KAVL 170849
FFWAVL
NCC189-171115-

BULLETIN - IMMEDIATE BROADCAST REQUESTED/EBS ACTIVATION REQUESTED 
FLASH FLOOD WARNING 
NATIONAL WEATHER SERVICE ASHEVILLE NC
349 AM EST SAT MAR 17 1990

THE NATIONAL WEATHER SERVICE HAS ISSUED A FLASH FLOOD WARNING 
EFFECTIVE UNTIL 615 AM EST FOR PEOPLE IN THE FOLLOWING COUNTY

   IN THE STATE OF NORTH CAROLINA
      WATAUGA

MODERATE TO HEAVY RAIN HAS CAUSE SMALL STREAMS TO FLOOD.  WATAUGA
COUNTY SHERIFFS OFFICE REPORTS THAT HIGHWAY 421 ONE HALF MILE WEST
OF BOONE HAS CAVED IN AND HAS BEEN CLOSED.

BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLOODS AND FLASH FLOODS.  IF FLASH FLOODING IS OBSERVED,
ACT QUICKLY.  MOVE UP TO ESCAPE FLOOD WATERS.  DO NOT STAY IN AREAS
SUBJECT TO FLOODING WHEN WATER BEGINS RISING.

A FLASH FLOOD WARNING MEANS THAT FLOODING IS OCCURRING OR IS
IMMINENT.  MOST FLASH FLOOD DEATHS OCCUR IN AUTOMOBILES.  DO NOT
ATTEMPT TO CROSS BRIDGES, DIPS OR LOW SPOTS IF WATER COVERS THE
ROADWAY.  NEVER TRY TO CROSS A FLOWING STREAM, EVEN A SMALL ONE,
ON FOOT.  TO ESCAPE RISING WATER MOVE UP TO HIGHER GROUND.

MOORE

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, Mar 16, 11:01 PM EST, 4 hours 48 minutes before
NCZ007-008-170500-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE CHARLOTTE NC
1055 PM EST FRI MAR 16 1990

SEVERE THUNDERSTORM WATCH IS IN EFFECT UNTIL MIDNIGHT FOR SECTION OF
THE SOUTHERN PIEDMONT OF NORTH CAROLINA INCLUDING GASTON AND
MECKLENBURG COUNTIES. THE WATCH IS ALSO IN EFFECT FOR PORTION OF
SOUTH CAROLINA INCLUDING THE COUNTIES OF CHEROKEE..YORK...CHESTER AND
LANCASTER COUNTIES.

A FLODD WATCH IS IN EFFECT FOR TONIGHT AND SATURDAY FOR THE
NORTHERN FOOTHILLS INCLUDING CATAWBA COUNTY.

AT 1050 PM EST WEATHER RADAR SHOWES A THUNDERSTORM WITH VERY HEAVY
RAIN IN GASTON COUNTY MOVING INTO MECKLENBURG COUNTY. OTHER SHOWERS
AND THUNDERSTORMS EXTENDED FROM CATAWBA COUNTY SOUTH INTO SOUTH
CAROLINA NEAR COLUMBIA. THE SHOWERS AND THUNDERSTORMS WAS MOVING
TO THE NORTHEAST AROUND 40 MPH.
NO REPORTS OF SEVERE WEATHER HAVE BEEN RECIEVED BUT VERY HEAVY
DOWNPOURS  AND INTENSE LIGHTNING WERE REPORTED.

STRONG GUSTY WIND...HEAVY DOWNPOURS COULD ACCOMPANY THESE THUNDER
STORMS ALONG WITH SOME FLOODING.

CONTINUE TO LISTEN TO YOUR LOCAL RADIO...TV OR NOAA WEATHER RADIO
FOR FURTHER STATEMENT.

THE NEXT STATEMENT WILL BE ISSUED AROUND 1230 AM OR SOONER IF
CONDITIONS WORSEN

JPW
Special weather statement, Mar 16, 11:28 PM EST, 4 hours 21 minutes before
NCZ007-008-170630-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE CHARLOTTE NC
1125 PM EST FRI MAR 16 1990

SEVERE THUNDERSTORM WATCH IS NO LONGER IN EFFECT FOR THE SOUTHERN
PIEDMONT SECTION WHICH INCLUDES GASTON AND MECKLENBURG COUNTY.
THE WATCH REMAINS IN EFFECT FOR PORTIONS OF SOUTH CAROLINA INCLUDING
THE COUNTIES OF CHEROKEE..YORK...CHESTER AND LANCASTER COUNTIES.

A FLOOD WATCH IS IN EFFECT FOR TONIGHT AND SATURDAY FOR THE
NORTHERN FOOTHILLS INCLUDING CATAWBA COUNTY.

AT 1120 PM EST WEATHER RADAR SHOWES THUNDERSTORMS CONTINUE TO
DECREASE IN INTENSITY. SHOWERS AND SOME THUNDERSTORMS EXTEND
ACROSS SECTION OF MECKLENBURG..GASTON..LINCOLN..AND CLEVELAND
COUNTIES IN NORTH CAROLINA. THE SHOWERS AND THUNDERSTORMS EXTENDS
SOUTH ACROSS CHESTER..YORK AND LANCASTER COUNTIES IN SOUTH
CAROLINA.

NO REPORTS OF SEVERE WEATHER HAVE BEEN RECIEVED BUT VERY HEAVY
DOWNPOURS AND INTENSE LIGHTNING WERE REPORTED.

GUSTY WIND...HEAVY DOWNPOURS COULD ACCOMPANY THESE THUNDER
STORMS ALONG WITH SOME FLOODING.

CONTINUE TO LISTEN TO YOUR LOCAL RADIO...TV OR NOAA WEATHER RADIO
FOR FURTHER STATEMENT.

THE NEXT STATEMENT WILL BE ISSUED AROUND 130 AM OR SOONER IF
CONDITIONS WORSEN

JPW
Special weather statement, Mar 16, 11:48 PM EST, 4 hours 1 minute before
SCZ001>004-170600-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
1148 PM EST FRI MAR 16 1990

A BAND OF THUNDERSTORMS WITH HEAVY RAIN WAS SHOWN BY WEATHER RADAR
APPROACHING THE WESTERN UPSTATE COUNTIES AT 1135 PM.  THE STORMS
WILL MOVE ACROSS ANDERSON AND ABBEVILLE COUNTIES AND COULD PRODUCE
SOME LOCAL FLOODING OF SMALL STREAMS AND ROADS.  THEY WERE MOVING
QUITE RAPIDLY /NEAR 50 MPH/ TOWARD THE NORTHEAST...SO THEY WILL
MOVE INTO OTHER PIEDMONT COUNTIES A BIT LATER WITH SIMILAR EFFECTS.

MODERATE TO HEAVY RAIN WITH EMBEDDED THUNDERSTORMS SHOULD SPREAD
ACROSS THE REMAINDER OF THE UPSTATE OVER THE NEXT SEVERAL HOURS.

JONES
Special weather statement, Mar 17, 1:22 AM EST, 2 hours 27 minutes before
NCZ007-008-170830-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE CHARLOTTE NC
125 AM EST SAT MAR 17 1990

A FLOOD WATCH REMAINS IN EFFECT FOR THIS MORNING AND SATURDAY FOR THE
NORTHERN FOOTHILLS OF NORTH CAROLINA WHICH INCLUDES CATAWBA COUNTY.

AT 120 AM EST WEATHER RADAR SHOWED MOSTLY LIGHT RAIN OVER SECTIONS OF
MECKLENBURG, GASTON, CATAWBA, AND LINCOLN COUNTIES, HOWEVER, AN AREA
OF HEAVIER SHOWERS AND THUNDERSTORMS EXTENDED FROM THE MOUNTAINS OF
NORTH CAROLINA SOUTHWARD THROUGH CLEVELAND COUNTY AND INTO WESTERN
SECTIONS OF SOUTH CAROLINA. THIS AREA OF RAIN WAS MOVING TOWARD THE
NORTHEAST AT ABOUT 45 MPH.

NO REPORTS OF SEVERE WEATHER HAVE BEEN RECIEVED BUT HEAVY
DOWNPOURS, INTENSE LIGHTNING, GUSTY WINDS, AND SMALL HAIL
COULD ACCOMPANY THUNDERSTORMS ALONG WITH SOME FLOODING.

CONTINUE TO LISTEN TO YOUR LOCAL RADIO...TV OR NOAA WEATHER RADIO
FOR UP TO DATE INFORMATION.

THE NEXT STATEMENT WILL BE ISSUED AROUND 330 AM OR SOOpNER IF
CONDITIONS WORSEN

JDS
Special weather statement, Mar 17, 1:41 AM EST, 2 hours 8 minutes before
NCZ007-008-170830-

SPECIAL WEATHER STATEMENT...CORRECTION
NATIONAL WEATHER SERVICE CHARLOTTE NC
145 AM EST SAT MAR 17 1990

THE SEVERE THUNDERSTORM WATCH FOR PORTIONS OF SOUTH CAROLINA INCLUDING
THE COU
Special weather statement, Mar 17, 3:34 AM EST, 15 minutes before
NCZ007-008-171030-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE CHARLOTTE NC
335 AM EST SAT MAR 17 1990

A FLOOD WATCH REMAINS IN EFFECT FOR THIS MORNING AND SATURDAY FOR THE
NORTHERN FOOTHILLS OF NORTH CAROLINA WHICH INCLUDES CATAWBA COUNTY.

AT 330 AM EST WEATHER RADAR SHOWED SCATTERED LIGHT AND MODERATE
SHOWERS OVER SECTIONS OF THE SOUTHERN PIEDMONT AND CATAWBA COUNTY OF
NORTH CAROLINA. THERE WAS ALSO A LARGE AREA OF LIGHT AND MODERATE RAIN
OVER MOUNTAIN SECTIONS OF THE CAROLINAS ALONG WITH SOME NEW SHOWER
DEVELOPMENT IN THE PIEDMONT OF SOUTH CAROLINA. THESE AREAS OF RAIN
HAVE BEEN MOVING TO THE NORTHEAST AT ABOUT 40 MPH. SOME
INTENSIFICATION OF THE RAIN IS POSSIBLE WITHIN THE NEXT SEVERAL HOURS.

HEAVY RAIN AND THUNDERSTORMS COVERED MUCH OF NORTHERN AND CENTRAL
GEORGIA. THIS HEAVY RAIN IS MOVING TO THE NORTHEAST AND IS EXPECTED TO
REACH THE CAROLINAS DURING THE MORNING HOURS.

NO REPORTS OF SEVERE WEATHER OR FLOODING HAVE BEEN RECIEVED BUT HEAVY
DOWNPOURS, INTENSE LIGHTNING, GUSTY WINDS, AND SMALL HAIL
COULD ACCOMPANY THUNDERSTORMS ALONG WITH SOME FLOODING.

CONTINUE TO LISTEN TO YOUR LOCAL RADIO...TV OR NOAA WEATHER RADIO
FOR UP TO DATE INFORMATION.

THE NEXT S	TATEMENT WILL BE ISSUED AROUND 530 AM OR SOONER IF
CONDITIONS WORSEN

//CORRECTION...DELETE SEVERE THUNDERSTORM WATCH FOR SOUTH CAROLINA//

JDS

The office that day

Everything else NWS Greenville-Spartanburg, SC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Mar 16, 7:10 PM ESTFlash Flood WarningGSPGraham, Jackson, Macon, Swain3 hr
Mar 16, 7:10 PM ESTFlash Flood WarningGSPCherokee, Clay3 hr
Mar 16, 9:11 PM ESTSevere Thunderstorm WarningGSPHenderson, Polk, Rutherford64 min
Mar 16, 9:44 PM ESTFlash Flood WarningGSPHenderson2 hr
Mar 16, 10:11 PM ESTFlash Flood WarningGSPCaldwell2 hr
Mar 16, 11:13 PM ESTFlash Flood WarningGSPWatauga2 hr
Mar 17, 3:19 AM ESTFlash Flood WarningGSPMacon3 hr

Nearby

Flash Flood Warnings in North Carolina, 1990Every flash flood 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.