Alert archive / Virginia / Flash Flood Warnings in 1998

Flash Flood Warning 36, NWS Blacksburg, VA

February 17, 1998City of Lexington, Virginia

NWS Blacksburg, VA issued this flash flood warning at Feb 17, 1998, 5:15 PM EST for City of Lexington, Virginia. It was in force for 105 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
Feb 17, 1998, 5:15 PM EST (22:15 UTC)
Expired
Feb 17, 1998, 7:00 PM EST
In force
105 min
Issued by
NWS Blacksburg, VA
Area
Whole counties

County City of Lexington, VA

The radar

The Roanoke radar (KFCX), 110 km from the middle of the area, began a volume at 22:34 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

Roanoke, VA (KRNK), launched 12:00Z, 10.3 hours before the alert went out and 64 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, Roanoke, VA at 12:00Z on 1998-02-17Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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, Roanoke, VA at 12:00Z on 1998-02-17The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 728 square meters per square second.1939587897117Sfc1 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
505 m above ground
0-6 km bulk shear
68 kt
0-1 km storm-relative helicity
728 m²/s²
0-3 km storm-relative helicity
863 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 KROA 172220
FFWRNK
VAC163-530-678-180030-

BULLETIN--IMMEDIATELY BROADCAST REQUESTED
FLOOD WARNING FOR SMALL CREEKS AND STREAMS
NATIONAL WEATHER SERVICE BLACKSBURG VA
515 PM EST TUE FEB 17 1998

THE NATIONAL WEATHER SERVICE IN BLACKSBURG VA HAS ISSUED A
FLOOD WARNING EFFECTIVE UNTIL 700 PM EST
FOR PEOPLE IN THE FOLLOWING LOCATIONS...

IN WEST CENTRAL VIRGINIA

   ...ROCKBRIDGE COUNTY

IN WEST CENTRAL VIRGINIA THE INDEPENDENT CITY OF

   ...BUENA VISTA
   ...LEXINGTON

THE WARNING HAS BEEN EXTENDED UNTIL 700 PM.  EARLIER RAINFALL OF UP
TO TWO INCHES OF RAIN COMBINED WITH SNOWMELT FROM THE HIGHER
ELEVATIONS HAS PUSHED SOME SMALL CREEKS AND STREAMS OUT OF THEIR
BANKS. AS THE RUNOFF CONTINUES...ADDITIONAL MINOR FLOODING OF
CREEKS... STREAMS AND LOW LYING AREAS IS POSSIBLE THROUGH EARLY
EVENING.

AT 500 PM... COUNTY OFFICIALS REPORT THAT THE SOUTH RIVER WAS OUT OF
IT/S BANKS OVER ROUTE 608 JUST NORTHEAST OF VESUVIUS.  

DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE 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
QUICKLY. MOVE TO HIGHER GROUND.

DD

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.

NWS Blacksburg, VA wrote its last area forecast discussion before this flash flood warning went out at Feb 17, 2:31 PM EST, 2 hours 44 minutes earlier.

Area forecast discussion, Feb 17, 2:31 PM EST, 2 hours 44 minutes before
TO...RDU/WBC/CRW

FM...RNK/JDS

HAVE NO PROBLEMS DROPPING THE FLOOD WATCHES WITH THE AFTN PACKAGES.
ANY PCPN TNGT SHUD BE SCATTERED AND/OR LIGHT.

In the hours before

Special weather statement, Feb 17, 1:25 PM EST, 3 hours 50 minutes before
NCZ001>006-018>020-VAZ007-009>020-022>024-032>035-043>047-058-
059-WVZ042>045-172305-

SPECIAL WEATHER STATEMENT...AMENDED
NATIONAL WEATHER SERVICE BLACKSBURG VA
125 PM EST TUE FEB 17 1998

...SEVERE THUNDERSTORM WATCH CANCELLED FOR NORTHWEST NORTH
   CAROLINA...

...A TORNADO WATCH CONTINUES IN EFFECT UNTIL 6 PM FOR YADKIN...
   SURRY... STOKES... ROCKINGHAM AND CASWELL COUNTIES IN NORTHWEST
   NORTH CAROLINA...

...A SEVERE THUNDERSTORM WATCH CONTINUES IN EFFECT UNTIL 6 PM FOR
   MERCER... SUMMERS... MONROE AND GREENBRIER COUNTIES IN SOUTHEAST
   WEST VIRGINIA...

AN INTENSE STORM SYSTEM MOVING UP THROUGH THE TENNESSEE VALLEY WAS
CONTINUING TO PULL UP ABUNDANT MOISTURE AND UNSTABLE AIR FROM THE
SOUTHEASTERN U.S. INTO THE SOUTHERN APPALACHIAN REGION. AREAS OF
THUNDERSTORMS WILL MOVE UP THROUGH THE REGION DURING THE AFTERNOON
HOURS AHEAD OF A COLD FRONT SWEEPING UP FROM TENNESSEE AND NORTH
CAROLINA.

THUNDERSTORMS IN AND NEAR THE WATCH AREAS COULD PRODUCE STRONG
DAMAGING WINDS AND HAIL AS WELL AS VERY HEAVY RAINFALL. TORNADOES
ARE POSSIBLE OVER THE FOOTHILLS AND PIEDMONT OF NORTH CAROLINA.
WITH ANY THUNDERSTORM...CLOUD TO GROUND LIGHTNING COULD BE
FREQUENT.

AS A RESULT OF THE HEAVY RAIN POTENTIAL WITH THESE
THUNDERSTORMS...A FLOOD WATCH CONTINUES IN EFFECT FOR MUCH OF
NORTHWEST NORTH CAROLINA...SOUTHWEST VIRGINIA AND SOUTHEAST WEST
VIRGINIA.

HOWEVER...THE FLOOD WATCH WAS DISCONTINUED FOR A FEW
COUNTIES IN SOUTHWEST VIRGINIA. THESE COUNTIES INCLUDE BATH...
ALLEGHANY... CRAIG... BUCKINGHAM... APPOMATTOX... CAMPBELL...
HALIFAX AND CHARLOTTE.

IF YOU ARE OUTDOORS...MOVE TO A PLACE OF SHELTER IMMEDIATELY IF A
STORM APPROACHES.  MOTORISTS SHOULD REMAIN ALERT FOR REDUCED
VISIBILITIES DURING DOWNPOURS OF RAIN.  STREETS MAY FLOOD QUICKLY.

IF FLOODING IS OBSERVED...MOVE TO ESCAPE FLOOD WATERS.  DO NOT STAY
IN AREAS SUBJECT TO FLOODING WHEN WATER BEGINS RISING. DO NOT DRIVE
YOUR VEHICLE OVER FLOODED ROADWAYS.

JDS
Special weather statement, Feb 17, 1:25 PM EST, 3 hours 50 minutes before
NCZ001>006-018>020-VAZ007-009>020-022>024-032>035-043>047-058-
059-WVZ042>045-172305-

SPECIAL WEATHER STATEMENT...AMENDED
NATIONAL WEATHER SERVICE BLACKSBURG VA
125 PM EST TUE FEB 17 1998

...SEVERE THUNDERSTORM WATCH CANCELLED FOR NORTHWEST NORTH
   CAROLINA...

...A TORNADO WATCH CONTINUES IN EFFECT UNTIL 6 PM FOR YADKIN...
   SURRY... STOKES... ROCKINGHAM AND CASWELL COUNTIES IN NORTHWEST
   NORTH CAROLINA...

...A SEVERE THUNDERSTORM WATCH CONTINUES IN EFFECT UNTIL 6 PM FOR
   MERCER... SUMMERS... MONROE AND GREENBRIER COUNTIES IN SOUTHEAST
   WEST VIRGINIA...

AN INTENSE STORM SYSTEM MOVING UP THROUGH THE TENNESSEE VALLEY WAS
CONTINUING TO PULL UP ABUNDANT MOISTURE AND UNSTABLE AIR FROM THE
SOUTHEASTERN U.S. INTO THE SOUTHERN APPALACHIAN REGION. AREAS OF
THUNDERSTORMS WILL MOVE UP THROUGH THE REGION DURING THE AFTERNOON
HOURS AHEAD OF A COLD FRONT SWEEPING UP FROM TENNESSEE AND NORTH
CAROLINA.

THUNDERSTORMS IN AND NEAR THE WATCH AREAS COULD PRODUCE STRONG
DAMAGING WINDS AND HAIL AS WELL AS VERY HEAVY RAINFALL. TORNADOES
ARE POSSIBLE OVER THE FOOTHILLS AND PIEDMONT OF NORTH CAROLINA.
WITH ANY THUNDERSTORM...CLOUD TO GROUND LIGHTNING COULD BE
FREQUENT.

AS A RESULT OF THE HEAVY RAIN POTENTIAL WITH THESE
THUNDERSTORMS...A FLOOD WATCH CONTINUES IN EFFECT FOR MUCH OF
NORTHWEST NORTH CAROLINA...SOUTHWEST VIRGINIA AND SOUTHEAST WEST
VIRGINIA.

HOWEVER...THE FLOOD WATCH WAS DISCONTINUED FOR A FEW
COUNTIES IN SOUTHWEST VIRGINIA. THESE COUNTIES INCLUDE BATH...
ALLEGHANY... CRAIG... BUCKINGHAM... APPOMATTOX... CAMPBELL...
HALIFAX AND CHARLOTTE.

IF YOU ARE OUTDOORS...MOVE TO A PLACE OF SHELTER IMMEDIATELY IF A
STORM APPROACHES.  MOTORISTS SHOULD REMAIN ALERT FOR REDUCED
VISIBILITIES DURING DOWNPOURS OF RAIN.  STREETS MAY FLOOD QUICKLY.

IF FLOODING IS OBSERVED...MOVE TO ESCAPE FLOOD WATERS.  DO NOT STAY
IN AREAS SUBJECT TO FLOODING WHEN WATER BEGINS RISING. DO NOT DRIVE
YOUR VEHICLE OVER FLOODED ROADWAYS.

JDS
Local storm report, Feb 17, 2:30 PM EST, 2 hours 45 minutes before
LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BLACKSBURG VA
330 PM EDT TUE FEB 17 1998

TIME (EDT) .....CITY LOCATION.....STATE   ...EVENT/REMARKS...
           ....COUNTY LOCATION....

0200 AM    COUNTYWIDE                VA   HIGH WIND
02/17/98   TAZEWELL                       SOME RADIO TOWERS ON
                                          RIDGES ACROSS THE COUNTY
                                          KNOCKED DOWN BY HIGH WIND.
                                          TIME IS ESTIMATED.

0645 AM    SHAWSVILLE                VA   HIGH WIND
02/17/98   MONTGOMERY                     SEVERAL MOBILE HOMES
                                          DAMAGED BY HIGH WINDS NOT
                                          ASSOCIATED WITH A
                                          THUNDERSTORM. CAMPER TOP
                                          WAS ALSO DESTROYED.

0200 PM    1 SW RIVERSIDE            VA   FLOODING
02/17/98   ROCKBRIDGE                     SOUTH RIVER FLOODED...ONE
                                          LANE OF ROUTE 608 CLOSED.

MTE
Local storm report, Feb 17, 3:30 PM EST, 1 hour 45 minutes before
LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BLACKSBURG VA
330 PM EDT TUE FEB 17 1998

TIME (EDT) .....CITY LOCATION.....STATE   ...EVENT/REMARKS...
           ....COUNTY LOCATION....

0200 AM    COUNTYWIDE                VA   HIGH WIND
02/17/98   TAZEWELL                       SOME RADIO TOWERS ON
                                          RIDGES ACROSS THE COUNTY
                                          KNOCKED DOWN BY HIGH WIND.
                                          TIME IS ESTIMATED.

0645 AM    SHAWSVILLE                VA   HIGH WIND
02/17/98   MONTGOMERY                     SEVERAL MOBILE HOMES
                                          DAMAGED BY HIGH WINDS NOT
                                          ASSOCIATED WITH A
                                          THUNDERSTORM. CAMPER TOP
                                          WAS ALSO DESTROYED.

0200 PM    1 SW RIVERSIDE            VA   FLOODING
02/17/98   ROCKBRIDGE                     SOUTH RIVER FLOODED...ONE
                                          LANE OF ROUTE 608 CLOSED.

MTE
Special weather statement, Feb 17, 4:06 PM EST, 1 hour 9 minutes before
NCZ003>006-020-WVZ042>045-172210-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE BLACKSBURG VA
406 PM EST TUE FEB 17 1998

...THE TORNADO WATCH WHICH WAS IN EFFECT FOR THE NORTHWEST PIEDMONT
OF NORTH CAROLINA HAS BEEN CANCELLED...

...THE SEVERE THUNDERSTORM WATCH WHICH WAS IN EFFECT FOR SOUTHEAST
WEST VIRGINIA HAS BEEN CANCELLED...

ONLY WIDELY SCATTERED THUNDERSTORMS ARE EXPECTED THE REST OF THE
AFTERNOON AND INTO THE EARLY EVENING. ALTHO$UGH THEY MAY HAVE
SMALL HAIL AND STRONG GUSTY WINDS...THEY ARE NOT EXPECTED TO REACH
SEVERE LEVELS.

JACKSON
Special weather statement, Feb 17, 4:06 PM EST, 1 hour 9 minutes before
NCZ003>006-020-WVZ042>045-172210-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE BLACKSBURG VA
406 PM EST TUE FEB 17 1998

...THE TORNADO WATCH WHICH WAS IN EFFECT FOR THE NORTHWEST PIEDMONT
OF NORTH CAROLINA HAS BEEN CANCELLED...

...THE SEVERE THUNDERSTORM WATCH WHICH WAS IN EFFECT FOR SOUTHEAST
WEST VIRGINIA HAS BEEN CANCELLED...

ONLY WIDELY SCATTERED THUNDERSTORMS ARE EXPECTED THE REST OF THE
AFTERNOON AND INTO THE EARLY EVENING. ALTHO$UGH THEY MAY HAVE
SMALL HAIL AND STRONG GUSTY WINDS...THEY ARE NOT EXPECTED TO REACH
SEVERE LEVELS.

JACKSON

The office that day

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

IssuedProductOfficeCountiesLasted
Feb 17, 12:38 PM ESTFlash Flood WarningRNKRoanoke, City of Salem3 hr
Feb 17, 12:38 PM ESTFlash Flood WarningRNKCity of Roanoke3 hr
Feb 17, 1:25 PM ESTFlash Flood WarningRNKRockbridge, City of Buena Vista4 hr
Feb 17, 1:25 PM ESTFlash Flood WarningRNKCity of Lexington4 hr
Feb 17, 5:15 PM ESTFlash Flood WarningRNKRockbridge, City of Buena Vista105 min
Feb 17, 6:38 PM ESTSevere Thunderstorm WarningRNKBuckingham62 min
Feb 17, 6:42 PM ESTSevere Thunderstorm WarningRNKBuckingham63 min
Feb 17, 6:45 PM ESTTornado WarningRNKBuckingham50 min

Nearby

Flash Flood Warnings in Virginia, 1998Every flash flood warning in 1998

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.