Alert archive / Virginia / Flash Flood Warnings in 1987

Flash Flood Warning 7, NWS Blacksburg, VA

April 15, 1987Bedford County, Pittsylvania County, Virginia

NWS Blacksburg, VA issued this flash flood warning at Apr 15, 1987, 11:00 PM EDT for Bedford County, Pittsylvania County, Virginia. It was in force for 3 hr.

The area

The counties it named.

The facts

Issued
Apr 15, 1987, 11:00 PM EDT (03:00 UTC)
Expired
Apr 16, 1987, 2:00 AM EDT
In force
3 hr
Issued by
NWS Blacksburg, VA
Area
Whole counties

Counties Bedford County, VA, Pittsylvania County, VA

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, 3.0 hours before the alert went out and 117 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 1987-04-16Temperature 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, Greensboro/Hi Pt, NC at 00:00Z on 1987-04-16The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 127 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
NaN m above ground
0-6 km bulk shear
28 kt
0-1 km storm-relative helicity
127 m²/s²
0-3 km storm-relative helicity
213 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, Apr 15, 8:34 PM EDT, 2 hours 26 minutes before
^WBCSPSROA

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE ROANOKE VA
830  PM  EDT  WED APR 15 1987

AT 820 PM RADAR SHOWED THAT THUNDERSTORMS WERE OCCURRING OVER
CENTRAL THROUGH EASTERN PATRICK..WESTERN HENRY..WESTERN FRANKLIN
AND SOUTHERN FLOYD COUNTIES. HEAVIEST RAINS APPEARED TO BE CENTERED
FROM A FEW MILES NORTH OF STUART OVER TO CRITZ IN PATRICK COUNTY..
WHERE SOME AMOUNTS AROUND AN INCH IN TWO HOURS HAVE BEEN MEASURED.

A SMALL STREAM FLOOD WATCH CONTINUES IN THESE COUNTIES. PERSONS
LIVING NEAR FLOOD PRONE AREAS SHOULD BE ESPECIALLY ALERT SINCE
THE RAINFALL ACTIVITY SHOWS ONLY SLOW MOVEMENT AND CONTINUED RAINS
THE NEXT FEW HOURS IS POSSIBLE.

STAY TUNED TO MEDIA AND NOAA WEATHER RADIO SOURCES IN THE EVENT A
WARNING OF IMMINENT OR ACTUAL FLOODING IS REQUIRED.

MCINTOSH
Special weather statement, Apr 15, 8:43 PM EDT, 2 hours 17 minutes before
^WBCSPSROA

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE ROANOKE VA
830  PM  EDT  WED APR 15 1987

AT 820 PM RADAR SHOWED THAT THUNDERSTORMS WERE OCCURRING OVER
CENTRAL THROUGH EASTERN PATRICK..WESTERN HENRY..WESTERN FRANKLIN
AND SOUTHERN FLOYD COUNTIES. HEAVIEST RAINS APPEARED TO BE CENTERED
FROM A FEW MILES NORTH OF STUART OVER TO CRITZ IN PATRICK COUNTY..
WHERE SOME AMOUNTS AROUND AN INCH IN TWO HOURS HAVE BEEN MEASURED.

A SMALL STREAM FLOOD WATCH CONTINUES IN THESE COUNTIES. PERSONS
LIVING NEAR FLOOD PRONE AREAS SHOULD BE ESPECIALLY ALERT SINCE
THE RAINFALL ACTIVITY SHOWS ONLY SLOW MOVEMENT AND CONTINUED RAINS
THE NEXT FEW HOURS IS POSSIBLE.

STAY TUNED TO MEDIA AND NOAA WEATHER RADIO SOURCES IN THE EVENT A
WARNING OF IMMINENT OR ACTUAL FLOODING IS REQUIRED.

MCINTOSH

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 15, 9:25 PM EDTFlash Flood WarningRNKPatrick5 hr
Apr 16, 12:54 PM EDTFlash Flood WarningRNKCraig3 hr

Nearby

Flash Flood Warnings in Virginia, 1987Every flash flood warning in 1987

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.