Alert archive / Virginia / Flash Flood Warnings in 1993

Flash Flood Warning 22, NWS Blacksburg, VA

July 1, 1993Roanoke County, Virginia

NWS Blacksburg, VA issued this flash flood warning at Jul 1, 1993, 11:00 PM EDT for Roanoke County, Virginia. It was in force for 60 min.

The area

The counties it named.

The facts

Issued
Jul 1, 1993, 11:00 PM EDT (03:00 UTC)
Expired
Jul 2, 1993, 12:00 AM EDT
In force
60 min
Issued by
NWS Blacksburg, VA
Area
Whole counties

County Roanoke County, VA

The nearest sounding before it

Greensboro/Hi Pt, NC (KGSO), launched 00:00Z, 3.0 hours before the alert went out and 126 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 1993-07-02Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1339 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 1993-07-02The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 17 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
1339 J/kg
Mixed-layer CIN
-8 J/kg
Mixed-layer LCL
1271 m above ground
0-6 km bulk shear
28 kt
0-1 km storm-relative helicity
17 m²/s²
0-3 km storm-relative helicity
98 m²/s²
Significant tornado parameter
0.0
Supercell composite
1.7

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 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, Jul 1, 8:50 PM EDT, 2 hours 10 minutes before
VAZ009-013-014-015-016-020145-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE ROANOKE VIRGINIA
847 PM EDT THU JUL 1 1993

...A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 11 PM TONIGHT
FOR PARTS OF SOUTHWEST AND WEST CENTRAL VIRGINIA...

AT 845 PM RADAR SHOWED SCATTERED STRONG THUNDERSTORMS ALONG THE NEW
RIVER VALLEY ACROSS THE BLUE RIDGE INTO PATRICK COUNTY. THESE STORMS
WERE MOVING TO THE EAST TO SOUTHEAST AROUND 15 MPH. OTHER STRONG STORMS
IN SOUTHEAST WEST VIRGINIA NEAR LEWISBURG WERE MOVING TO THE SOUTHEAST
AT 20 MPH...AND AT THEIR PRESENT MOVEMENT WILL MOVE INTO NORTHERN CRAIG
COUNTY AROUND 900 PM. THESE STORMS NEAR LEWISBURG PRODUCED WIND DAMAGE
EARLIER THIS EVENING AS THEY PASSED THROUGH SOUTHEAST WEST VIRGINIA.

THE SLOW MOVEMENT OF THESE STORMS IS PRODUCING SOME HEAVY DOWNPOURS.
MANY LOCATIONS HAVE RECEIVED NEAR AN INCH OF RAIN IN LESS THAN AN HOUR
...CRITZ IN EASTERN PATRICK COUNTY HAD NEARLY ONE AND THREE QUARTERS
INCHES IN LESS THAN 2 HOURS. MOTORISTS SHOULD WATCH FOR FLOODING OF LOW
LYING AREAS ALONG ROADWAYS.

PEOPLE IN THE WATCH AREA SHOULD REMAIN ALERT TO THE WEATHER THIS
EVENING. NO SEVERE WEATHER HAS BEEN REPORTED TO THE ROANOKE WEATHER
OFFICE...BUT THESE STORMS COULD STILL PRODUCE DAMAGING WINDS OR LARGE
HAIL AT ANY TIME. MONITOR NOAA WEATHER RADIO OR YOUR LOCAL MEDIA FOR
FURTHER STATEMENTS OR POSSIBLE WARNINGS.

JACKSON
Special weather statement, Jul 1, 9:34 PM EDT, 1 hour 26 minutes before
VAZ009-013-014-015-016-020230-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE ROANOKE VIRGINIA
934 PM EDT THU JUL 1 1993

...A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 11 PM EDT FOR
PARTS OF SOUTHWEST AND WEST CENTRAL VIRGINIA...

NATIONAL WEATHER SERVICE RADAR AT 930 PM SHOWED A BAND OF STRONG
THUNDERSTORMS THAT EXTENDED FROM NORTHEAST MONTGOMERY COUNTY THROUGH
CRAIG...AND INTO NORTHWEST BOTETOURT COUNTY. THESE STORMS WERE MOVING
TO THE EAST AT 15 TO 20 MPH...AND THEY WILL BE MOVING INTO ROANOKE
COUNTY SOON...REACHING THE CITIES OF SALEM AND ROANOKE AROUND 10 PM.
THEY WILL ALSO BE MOVING THROUGH BOTETOURT COUNTY DURING THE NEXT HOUR.

PEOPLE IN THE PATH OF THESE STORMS CAN EXPECT TORRENTIAL DOWNPOURS AND
FREQUENT LIGHTNING...POSSIBLY STRONG WINDS AND HAIL.

OTHER STRONG STORMS WERE OVER WESTERN FRANKLIN COUNTY...AND EXTENDED
FROM THE MARTINSVILLE AREA WEST INTO PATRICK COUNTY. THESE STORMS WERE
MOVING TO THE SOUTH AT 10 TO 15 MPH.

JACKSON
Special weather statement, Jul 1, 9:38 PM EDT, 1 hour 22 minutes before
VAZ009-013-014-015-016-020230-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE ROANOKE VIRGINIA
934 PM EDT THU JUL 1 1993

...A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 11 PM EDT FOR
PARTS OF SOUTHWEST AND WEST CENTRAL VIRGINIA...

NATIONAL WEATHER SERVICE RADAR AT 930 PM SHOWED A BAND OF STRONG
THUNDERSTORMS THAT EXTENDED FROM NORTHEAST MONTGOMERY COUNTY THROUGH
CRAIG...AND INTO NORTHWEST BOTETOURT COUNTY. THESE STORMS WERE MOVING
TO THE EAST AT 15 TO 20 MPH...AND THEY WILL BE MOVING INTO ROANOKE
COUNTY SOON...REACHING THE CITIES OF SALEM AND ROANOKE AROUND 10 PM.
THEY WILL ALSO BE MOVING THROUGH BOTETOURT COUNTY DURING THE NEXT HOUR.

PEOPLE IN THE PATH OF THESE STORMS CAN EXPECT TORRENTIAL DOWNPOURS AND
FREQUENT LIGHTNING...POSSIBLY STRONG WINDS AND HAIL.

OTHER STRONG STORMS WERE OVER WESTERN FRANKLIN COUNTY...AND EXTENDED
FROM THE MARTINSVILLE AREA WEST INTO PATRICK COUNTY. THESE STORMS WERE
MOVING TO THE SOUTH AT 10 TO 15 MPH.

JACKSON
Special weather statement, Jul 1, 10:26 PM EDT, 34 minutes before
VAZ009-013-014-015-016-020330-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE ROANOKE VIRGINIA
1026 PM EDT THU JUL 1 1993

...NEARLY STATIONARY THUNDERSTORM PRODUCING TORRENTIAL RAIN IN NORTHWEST
ROANOKE COUNTY...
...A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 11 PM FOR PARTS
   OF SOUTH WEST AND WEST CENTRAL VIRGINIA...

AT 1020 PM RADAR SHOWED A STRONG THUNDERSTORM OVER NORTHWEST ROANOKE
COUNTY JUST TO THE NORTH OF DIXIE CAVERNS IN THE BRADSHAW AREA. THIS
STORM HAD BEEN NEARLY STATIONARY DURING THE PAST HOUR...AND HAS DUMPED
ALMOST 2.5 INCHES OF RAIN IN THE LAST HOUR AND A HALF. THIS WILL CAUSE
SOME MINOR FLOODING OF SMALL CREEKS AND IN LOW LYING AREAS.

OTHER STRONG STORMS WERE SCATTERED IN A BAND THAT EXTENDED FROM BEDFORD
COUNTY SOUTHWARD THROUGH FRANKLIN AND HENRY COUNTIES INTO NORTH
CAROLINA. THESE STORMS WILL ALSO PRODUCE VERY HEAVY DOWNPOURS. STRONG
WINDS AND HAIL ARE STILL A POSSIBILITY WITH ANY OF THESE STORMS.

JACKSON
Special weather statement, Jul 1, 10:28 PM EDT, 32 minutes before
VAZ009-013-014-015-016-020330-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE ROANOKE VIRGINIA
1026 PM EDT THU JUL 1 1993

...NEARLY STATIONARY THUNDERSTORM PRODUCING TORRENTIAL RAIN IN NORTHWEST
ROANOKE COUNTY...
...A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 11 PM FOR PARTS
   OF SOUTH WEST AND WEST CENTRAL VIRGINIA...

AT 1020 PM RADAR SHOWED A STRONG THUNDERSTORM OVER NORTHWEST ROANOKE
COUNTY JUST TO THE NORTH OF DIXIE CAVERNS IN THE BRADSHAW AREA. THIS
STORM HAD BEEN NEARLY STATIONARY DURING THE PAST HOUR...AND HAS DUMPED
ALMOST 2.5 INCHES OF RAIN IN THE LAST HOUR AND A HALF. THIS WILL CAUSE
SOME MINOR FLOODING OF SMALL CREEKS AND IN LOW LYING AREAS.

OTHER STRONG STORMS WERE SCATTERED IN A BAND THAT EXTENDED FROM BEDFORD
COUNTY SOUTHWARD THROUGH FRANKLIN AND HENRY COUNTIES INTO NORTH
CAROLINA. THESE STORMS WILL ALSO PRODUCE VERY HEAVY DOWNPOURS. STRONG
WINDS AND HAIL ARE STILL A POSSIBILITY WITH ANY OF THESE STORMS.

JACKSON
Special weather statement, Jul 1, 11:00 PM EDT, 0 minutes before
VAC770-020400-

BULLETIN -
SMALL STREAN AND URBAN FLOOD WARNING
NATIONAL WEATHER SERVICE ROANOKE VIRGINIA
1100 PM EDT THU JUL 1 1993

THE NATIONAL WEATHER SERVICE IN ROANOKE VIRGINIA HAS ISSUED A
SMALL STREAM AND URBAN FLOOD WARNING EFFECTIVE UNTIL MIDNIGHT EDT
FOR PEOPLE IN THE FOLLOWING LOCATION ...

IN SOUTH CENTRAL VIRGINIA THE INDEPENDENT CITY OF

   ...ROANOKE

A NEARLY STATIONARY THUNDERSTORM OVER THE CITY OF ROANOKE IS DUMPING
TORRENTIAL RAINFALL. SOME STREETS AND OTHER LOW AREAS ARE BEGINNING TO
FLOOD. THIS RAIN WILL TAPER OFF IN THE NEXT 15 MINUTES TO HALF HOUR.

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.

JACKSON

Nearby

Flash Flood Warnings in Virginia, 1993Every flash flood warning in 1993

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.