Alert archive / Virginia / Flash Flood Warnings in 1991

Flash Flood Warning 3, NWS Blacksburg, VA

May 18, 1991Giles County, Virginia

NWS Blacksburg, VA issued this flash flood warning at May 18, 1991, 9:15 PM EDT for Giles County, Virginia. It was in force for 3 hr.

The area

The counties it named.

The facts

Issued: May 18, 1991, 9:15 PM EDT (01:15 UTC)
Expired: May 19, 1991, 12:15 AM EDT
In force: 3 hr
Issued by: NWS Blacksburg, VA
Area: Whole counties

County Giles County, VA

The nearest sounding before it

Greensboro/Hi Pt, NC (KGSO), launched 00:00Z, 1.3 hours before the alert went out and 155 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: NaN m above ground
0-6 km bulk shear: 25 kt
0-1 km storm-relative helicity: 1 m²/s²
0-3 km storm-relative helicity: 22 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 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, May 18, 4:24 PM EDT, 4 hours 51 minutes before

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Special weather statement, May 18, 5:37 PM EDT, 3 hours 38 minutes before

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    <section class="card" role="status" aria-live="polite">
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        The site you requested is temporarily down for maintenance or an unexpected outage.
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Special weather statement, May 18, 6:31 PM EDT, 2 hours 44 minutes before

VAZ009-013>014-015-182230-

SPECIAL WEATHER STATMENT
NATIONAL WEATHER SERVICE ROANOKE VA
630 PM EDT SAT MAY 18 1991

...THUNDERSTORMS DEVELOPING OVER SOUTHWESTERN VIRGINIA..

AT 625 PM EDT RADAR SHOWED A LINE OF THUNDERSTORMS OVER THE COUNTIES
OF EASTERN GILES INTO CRAIG EASTWARD TO SOUTHERN BOTETOURT AND NORTHERN
BEDFORD IN SOUTHWESTERN VIRGINIA.

THIS LINE OF THUNDERSTORMS WAS MOVING TO THE SOUTH AT 25 MPH.

THESE THUNDERSTORMS WILL BE MOVING iINTO THE COUNTIES OF MONTGOMERY
ROANOKE AND FRANKLIN IN THE NEXT HOUR OR TWO.

PEOPLE IN THE PATH OF THESE STORMS CAN EXPECT HEAVY RAIN DANGEROUS
LIGHTNING AND GUSTY WINDS.
CG

Special weather statement, May 18, 8:40 PM EDT, 35 minutes before

VAZ015-016-190400-

SPECIAL WEATHER STATMENT
NATIONAL WEATHER SERVICE ROANOKE VA
830 PM EDT SAT MAY 18 1991

...THUNDERSTORMS OVER THE SOUTHWESTERN MOUNTAINS AND THE NEW RIVER
   VALLEY...
...FLASH FLOOD IN EFFECT FOR GILES AND BLAND AND ALL COUNTIES WEST
   IN SOUTHWEST VIRGINIA UNTIL MIDNIGHT TONIGHT...

AT 825 PM EDT RADAR SHOWED A AREA OF SHOWERS AND THUNDERSTORMS
IN GILES COUNTY IN SOUTHWEST VIRGINIA. RAINFALL OF NEARLY AN INCH HAS
FALLEN IN: THE PAST 3 HOURS OVER EASTERN GILES..MORE RAIN IS MOVING
INTO THE WATCH AREA AT THIS TIME.

PEOPLE LIVING NEAR SMALL STREAMS AND CREEKS ARE ADVISED TO BE ON THE
LOOKOUT FOR RAPIDLY RISING WATER.
CG

Special weather statement, May 18, 8:43 PM EDT, 32 minutes before

VAZ015-016-190400-

SPECIAL WEATHER STATMENT
NATIONAL WEATHER SERVICE ROANOKE VA
830 PM EDT SAT MAY 18 1991

...THUNDERSTORMS OVER THE SOUTHWESTERN MOUNTAINS AND THE NEW RIVER
   VALLEY...
...FLASH FLOOD IN EFFECT FOR GILES AND BLAND AND ALL COUNTIES WEST
   IN SOUTHWEST VIRGINIA UNTIL MIDNIGHT TONIGHT...

AT 825 PM EDT RADAR SHOWED AN AREA OF SHOWERS AND THUNDERSTORMS
IN GILES COUNTY IN SOUTHWEST VIRGINIA. RAINFALL OF NEARLY AN INCH HAS
FALLEN IGN THE PAST 3 HOURS OVER EASTERN GILES..MORE RAIN IS MOVING
INTO THE WATCH AREA AT THIS TIME.

PEOPLE LIVING NEAR SMALL STREAMS AND CREEKS ARE ADVISED TO BE ON THE
LOOKOUT FOR RAPIDLY RISING WATER.
CG

Special weather statement, May 18, 8:48 PM EDT, 27 minutes before

VAZ015-016-190400-

SPECIAL WEATHER STATMENT..CORRECTION..
NATIONAL WEATHER SERVICE ROANOKE VA
830 PM EDT SAT MAY 18 1991

...THUNDERSTORMS OVER THE SOUTHWESTERN MOUNTAINS AND THE NEW RIVER
   VALLEY...
...FLASH FLOOD WATCH IN EFFECT FOR GILES AND BLAND AND ALL COUNTIES
   WEST IN SOUTHWEST VIRGINIA UNTIL MIDNIGHT TONIGHT...

AT 825 PM EDT RADAR SHOWED AN AREA OF SHOWERS AND THUNDERSTORMS
IN GILES COUNTY IN SOUTHWEST VIRGINIA. RAINFALL OF NEARNLY AN INCH HAS
FALLEN IN THE PAST 3 HOURS OVER EASTERN GILES..MORE RAIN IS MOVING
INTO THE WATCH AREA AT THIS TIME.

PEOPLE LIVING NEAR SMALL STREAMS AND CREEKS ARE ADVISED TO BE ON THE
LOOKOUT FOR RAPIDLY RISING WATER.
CG

The office that day

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

Issued	Product	Office	Counties	Lasted
May 19, 12:25 AM EDT	Flash Flood Warning	RNK	Forsyth	3 hr

Nearby

Flash Flood Warnings in Virginia, 1991 Every flash flood warning in 1991

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.