Alert archive / Virginia / Severe Thunderstorm Warnings in 1994

Severe Thunderstorm Warning 13, NWS Blacksburg, VA

April 29, 1994Charles City County, Virginia

NWS Blacksburg, VA issued this severe thunderstorm warning at Apr 29, 1994, 5:58 PM EDT for Charles City County, Virginia. It was in force for 62 min.

The area

The counties it named.

The facts

Issued
Apr 29, 1994, 5:58 PM EDT (21:58 UTC)
Expired
Apr 29, 1994, 7:00 PM EDT
In force
62 min
Issued by
NWS Blacksburg, VA
Area
Whole counties

County Charles City County, VA

The nearest sounding before it

Wallops Is Stn, VA (KWAL), launched 12:00Z, 10.0 hours before the alert went out and 159 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, Wallops Is Stn, VA at 12:00Z on 1994-04-29Temperature 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, Wallops Is Stn, VA at 12:00Z on 1994-04-29The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 140 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1189 m above ground
0-6 km bulk shear
28 kt
0-1 km storm-relative helicity
140 m²/s²
0-3 km storm-relative helicity
156 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.

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, Apr 29, 1:15 PM EDT, 4 hours 43 minutes before
VAZ010>020-022>024-032-033-043-291930-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE ROANOKE VIRGINIA
115 PM EDT FRI APR 29 1994

...THUNDERSTORMS DEVELOPING OVER THE WESTERN AND WESTCENTRAL
   MOUNTAINS OF  VIRGINIA...

AT 1 PM EDT RADAR SHOWED A LINE OF THUNDERSTORMS MOVING THROUGH
THE COUNTIES OF GILES AND CRAIG IN SOUTHWESTERN VIRGINIA.
THIS LINE OF THUNDERSTORMS WAS MOVING TO THE EAST AT 30 MPH.

THESE THUNDERSTORMS WILL BE MOVING INTO THE COUNTIES OF BOTETOURT
PULASKI AND MONTGOMERY WITHIN THE HOUR.

PEOPLE IN THE PATH OF THESE STORMS SHOULD TAKE COVER IMMEDIATELY.
CG
Special weather statement, Apr 29, 2:28 PM EDT, 3 hours 30 minutes before
VAZ035-059-046-058-034-044-045-271900-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE LYNCHBURG VA
225 PM EDT FRI APR 29 1994

A LINE OF THUNDERSTORMS EXTENDING FROM HIGHLAND TO PATRICK COUNTIES
IN WESTERNING VIRGINIA IS MOVING TO THE EAST AT 30 MPH AND IS
ENTERING WESTERN BEDFORD COUNTY AT THIS TIME. THESE STORMS WILL BE
MOVING INTO THE COUNTIES OF AMHERST...CAMPBELL...PITTSYLVANIA...
HALIFAX...CHARLOTTE AND APPOMATTOX WITHIN THE NEXT HOUR.

THESE STORMS MAY PRODUCE HEAVY DOWNPOURS...STRONG GUSTY WINDS AND
DANGEROUS LIGHTING AS THEY PASS THROUGH OUR AREA.

PEOPLE IN THESE COUNTIES SHOULD BE ON THE LOOKOUT FOR THREATENING
WEATHER CONDITIONS AND LISTEN TO NOAA WEATHER RADIO OR YOUR RADIO
OR TV STATION FOR LATEST STATEMENT OR POSSIBLE WARNING.

MONROE

&
Special weather statement, Apr 29, 2:34 PM EDT, 3 hours 24 minutes before
VAZ011-012-013-014-015-016-017-018-020-024-023-022-032-033-034-
292030-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE ROANOKE VIRGINIA
233 PM EDT FRI APR 29 1994

...THUNDERSTORMS PELTING THE ROANOKE VALLEY...

AT 225 PM HEAVY THUNDERSTORMS WERE BEING REPORTED BY RADAR AND WEATHER
SPOTTERS AROUND THE ROANOKE VALLEY AREA OF VIRGINIA.  SMALL HAIL WAS
BEING REPORTED BY A SPOTTER NEAR LAKESIDE IN SALEM WITH THE HAIL
ACCUMULATING UP TO 3/4 OF AN INCH.  IN ADDITION VERY HEAVY RAIN AND
INTENSE LIGHTNING WAS ACCOMPANYING THESE STORMS.

THE STORMS WILL BE MOVING EAST INTO BOTETOURT, BEDFORD, FLOYD,
FRANKLIN, PATRICK AND CARROLL COUNTIES WITHIN THE HALF-HOUR.

OTHER STORMS WERE SCATTERED ALONG A LINE FROM NORTHERN BOTETOURT
SOUTHWEST INTO WYTHE AND GRAYSON COUNTIES.  THESE STORMS WILL ALSO BE
MOVING TOWARD THE ROANOKE VALLEY AND SURROUNDING COUNTIES IN AN HOUR OR
SO.

WHILE NO SEVERE WEATHER HAS YET BEEN REPORTED, RESIDENTS IN
SOUTHWEST VIRGINIA SHOULD TAKE COVER AS THE STORMS APPROACH.  MOTORISTS
SHOULD BE ESPECIALLY VIGILANT SINCE CONSIDERABLE PONDING IS LIKELY ON
ROADWAYS.

END/MCINTOSH

&
Special weather statement, Apr 29, 5:09 PM EDT, 49 minutes before
VAZ014-022-033-292315-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE ROANOKE VIRGINIA
509 PM EDT FRI APR 29 1994

SEVERE THUNDERSTORM AND FLASH FLOOD WARNINGS EXPIRED AT 5 PM FOR ROANOKE
COUNTY...MONTGOMERY COUNTY...FRANKLIN COUNTY ... AND THE CITIES OF SALEM
AND ROANOKE.

WEATHER SERVICE RADAR SHOWS A LARGE AREA OF LIGHT RAIN OVER THE ROANOKE
VALLEY...BUT ALL HEVAY RAINS ARE NOW EAST OF THE BLUE RIDGE AND MOVING
INTO CENTRAL VA.

LIGHT RAIN MAY PERSIST OVER THE ROANOKE VALLEY FOR THE NEXT COUPLE OF
HOURS...BUT THIS ADDITIONAL RAINFALL SHOULD POSE NO FURTHER THREAT OF
FLASH FLOODING.  FLOOD WATERS ARE NOW RECEDING ACROSS THE VALLEY...AND
CONDITIONS SHOULD RETURN TO NORMAL BY EARLY EVENING.

WIDESPREAD URBAN AND STREET FLOODING WAS REPORTED ACROSS THE AREA...AS
WELL AS SEVERAL TREES TOPPLED AND POWER LINES DOWN.  SOME SECTIONS OF
THE VALLEY REMAIN WITHOUT POWER AT 5 PM.

IF YOU ARE IN AN AREA PRONE TO FLOODING... MONITOR WATER LEVELS CLOSELY.
IF DRIVING... DO NOT DRIVE INTO FLOODED ROADWAYS, UNDERPASSES OR LOW
SPOTS.  DO NOT CIRCUMVENT SAFETY BARRIERS FOR THE SAKE OF SAVING A FEW
MINUTES DRIVING TIME.

GILLEN

&
Special weather statement, Apr 29, 5:33 PM EDT, 25 minutes before
VAZ033-043-292230-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE ROANOKE VIRGINIA
532 PM EDT FRI APR 29 1994

...STRONG THUNDERSTORM OVER FRANKLIN COUNTY...

AT 527 PM VOLENS WEATHER RADAR SHOWED A THUNDERSTORM...WITH VERY HEAVY
RAIN AND POSSIBLE HAIL...OVER SOUTHERN FRANKLIN COUNTY...NORTH OF
MARTINSVILLE.

THE THUNDERSTORM WAS MOVING NORTHEAST AT 20 MILES AN HOUR.

STRONG GUSTY WINDS ARE ALSO POSSIBLE WITH THIS THUNDERSTORM.

CUNNINGHAM

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 29, 2:57 PM EDTFlash Flood WarningRNKFranklin, Montgomery, Roanoke2 hr
Apr 29, 2:57 PM EDTSevere Thunderstorm WarningRNKMontgomery, Roanoke2 hr
Apr 29, 2:57 PM EDTSevere Thunderstorm WarningRNKFranklin2 hr
Apr 29, 3:12 PM EDTSevere Thunderstorm WarningRNKBedford63 min
Apr 29, 5:58 PM EDTSevere Thunderstorm WarningRNKHalifax62 min

Nearby

Severe Thunderstorm Warnings in Virginia, 1994Every severe thunderstorm warning in 1994

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.