Alert archive / North Carolina / Severe Thunderstorm Warnings in 1987

Severe Thunderstorm Warning 2, NWS Blacksburg, VA

April 15, 1987Davidson County, Forsyth County, North Carolina

NWS Blacksburg, VA issued this severe thunderstorm warning at Apr 15, 1987, 6:00 PM EDT for Davidson County, Forsyth County, North Carolina. It was in force for 60 min. 2 reports came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued
Apr 15, 1987, 6:00 PM EDT (22:00 UTC)
Expired
Apr 15, 1987, 7:00 PM EDT
In force
60 min
Issued by
NWS Blacksburg, VA
Area
Whole counties

Counties Davidson County, NC, Forsyth County, NC

The radar

The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.

What was reported inside it

TimeReportWhereRemark
Apr 15, 6:38 PM EDTThunderstorm Wind 0Forsyth, NC
Apr 15, 6:50 PM EDTHail 1.75Davidson, NC

NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in. Storm Data before 1996 records only tornadoes, thunderstorm wind and hail.

The nearest sounding before it

Greensboro/Hi Pt, NC (KGSO), launched 12:00Z, 10.0 hours before the alert went out and 33 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 12:00Z on 1987-04-15Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 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 12:00Z on 1987-04-15The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 236 square meters per square second.193958Sfc1 km3 km6 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
616 m above ground
0-6 km bulk shear
25 kt
0-1 km storm-relative helicity
236 m²/s²
0-3 km storm-relative helicity
277 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 KGSO 152202
SVRGSO
NCC057-067-159-152300-

BULLETIN-IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE GREENSBORO NC
TIME 600 PM EDT WED APR 15 1987

THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM WARNING
EFFECTIVE UNTIL 700 PM EDT FOR PEOPLE IN THE FOLLOWING COUNTIES OF

NORTH CAROLINA...DAVIDSON...FORSYTH...ROWAN

AT 550 PM EDT RADAR SHOWED SEVERE THUNDERSTORMS IN DAVIDSON..FORSYTH
AND ROWAN COUNTIES MOVING NORTHEAST AT ABOUT 10 MPH.

DAMAGING WINDS...LARGE HAIL..VERY HEAVY DOWNPOURS AND DANGEROUS
LIGHTNING ARE POSSIBLE WITH SEVERE THUNDERSTORMS.

TORNDOES ARE ALSO POSSIBLE WITH THESE STORMS.

A SEVERE THUNDERSTORM WARNING MEANS SEVERE THUNDERSTORMS HAVE BEEN
SIGHTED OR INDICATED BY RADAR. A SEVERE THUNDERSTORM HAS WINDS STRONGER
THAN 57 MPH OR HAIL 3/4 OF AN INCH OR LARGER.

IF THREATENING WEATHER APPROACHES YOU...TAKE COVER IMMEDIATELY.
REPORT ANY SEVERE WEATHER TO THE NEAREST LAW ENFORCEMENT AGEN1CY
FOR RELAY TO THE NATIONAL WEATHER SERVICE.

RBN

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 15, 12:03 PM EDT, 5 hours 57 minutes before
^WBCSPSROA

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE ROANOKE VA
1150 AM  EDT  WED APR 15 1985

...THUNDERSTORMS MOVING THROUGH SOUTHWEST AND SOUTHCENTRAL VIRGINIA...

AT 1145AM A LARGE AREA OF MODERATE RAIN OVER SOUTHWEST VIRGINIA IS
ACCOMPANIED BY SCATTERED THUNDERSTORMS. THE RAIN AND THE THUNDERSTORMS
ARE MOVING GENERALLY ON A NORTHEAST TRACK THROUGH ROANOKE AND MONTGOMERY
COUNTIES PRIMARILY. CONSIDERABLE ACTIVITY IS ALSO LOCATED OVER FLOYD,
FRANKLIN, PATRICK, CRAIG, HENRY AND BOTETOURT COUNTIES.

WITH THE PRESENT COURSE AND SPEED THE THUNDERSTORMS SHOULD BE MOVING OUT
OF THE ABOVE COUNTIES WITHIN ONE TO TWO HOURS. SMALLER STREAMS
IN THE ABOVE COUNTIES WILL LIKELY BE NEAR OR SLI>GHTLY OVER BANKFUL
SO PERSONS LIVING ALONG TYPICAL FLOOD PRONE AREAS SHOULD BE ALERT TO
POTENTIAL FLOODING. STAY TUNED TO MEDIA AND NOAA WEATHER RADIO
IN THE EVENT WARNINGS ARE NECESSARY.$$
HM

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 15, 4:45 PM EDTSevere Thunderstorm WarningRNKRowan60 min
Apr 15, 6:00 PM EDTSevere Thunderstorm WarningRNKRowan60 min
Apr 15, 6:23 PM EDTFlash Flood WarningRNKDavidson, Rowan4 hr
Apr 15, 7:13 PM EDTSevere Thunderstorm WarningRNKDavidson, Guilford62 min

Nearby

Severe Thunderstorm Warnings in North Carolina, 1987Every severe thunderstorm 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.