Alert archive / North Carolina / Severe Thunderstorm Warnings in 1987
Severe Thunderstorm Warning 13, NWS Blacksburg, VA
NWS Blacksburg, VA issued this severe thunderstorm warning at Jul 3, 1987, 8:15 PM EDT for Caswell County, North Carolina. It was in force for 60 min.
The area
The counties it named.
The facts
- Issued
- Jul 3, 1987, 8:15 PM EDT (00:15 UTC)
- Expired
- Jul 3, 1987, 9:15 PM EDT
- In force
- 60 min
- Issued by
- NWS Blacksburg, VA
- Area
- Whole counties
County Caswell County, NC
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, 0.3 hours before the alert went out and 62 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.
- Mixed-layer CAPE
- 96 J/kg
- Mixed-layer CIN
- -39 J/kg
- Mixed-layer LCL
- 643 m above ground
- 0-6 km bulk shear
- 13 kt
- 0-1 km storm-relative helicity
- 13 m²/s²
- 0-3 km storm-relative helicity
- 29 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KGSO 040015 SVRGSO NCC033-040115- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE GREENSBORO NC 815 PM EDT FRI JUL 3 1987 THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 915 PM EDT FOR PEOPLE IN THE FOLLOWING COUNTY OF NORTH CAROLINA...CASWELL AT 813 PM RADAR SHOWED A SEVERE THUNDERSTORM ON THE GUILFORD AND CASWELL COUNTY LINE MOVING NORTHEAST AT 25 MPH. IF YOU ARE IN AN AREA THREATENED BY THE STORM..GO TO A REINFORECED SHELTER AND PREPARE FOR DAMAGING WINDS..LARGE HAIL..VERY HEAVY DOWNPOURS AND FREQUENT DANGEROUS LIGHTNING. THIS IS A DANGEROUS STORM. TAKE COVER IMMEDIATELY. REPORT ANY DAMAGING WINDS OR L<ARGE HAIL TO THE NEAREST LAW ENFORCEMENT AGENCY.. AND ASK THEM TO RELAY YOUR REPORT 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, Jul 3, 2:41 PM EDT, 5 hours 34 minutes before
^WBCSPSROA SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE ROANOKE VA 235 PM EDT FRI JUL 03 1987 ...VERY HEAVY THUNDERSTORM IN NORTH CENTRAL PULASKI COUNTY VIRGINIA... AT 225 PM EDT NATIONAL WEATHER SERVICE RADAR DETECTED A VERY HEAVY THUNDERSTORM OVER NORTH CENTRAL PULASKI COUNTY VA MOVING TO THE NORTHEAST AT 25 MPH. THIS STORM IS CAPABLE OF HEAVY DOWNPOURS..STRONG GUSTY WINDS..DANGEREOUS LIGHTNING ALONG WITH THE POSSIBILITY OF SMALL STREAM AND URBAN FLOODING. OTHER DEVELOPING HEAVY THUNDERSTORMS ARE LOCATED IN NORTHWESTERN CRAIG.. WESTERN MONTGOMERY..AND ALONG THE WEST CENTRAL PORTION OF FLOYD COUNTIES OF VIRGINIA. PERSONS SHOULD BE ALERT DURING THE PASSAGE OF THESE STORMS AND TO TAKE INDOOR SHELTER AND TO AVOID LOW LOW LYING AREAS PRONE TO SMALL STREAM AND URBAN FLOODING. WB
Special weather statement, Jul 3, 3:43 PM EDT, 4 hours 32 minutes before
^WBCSPSROA
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE ROANOKE VA
335 PM EDT FRI JUL 03 1987
...VERY HEAVY THUNDERSTORM IN SOUTHEAST ROANOKE COUNTY VA...
AT 325 PM EDT WEATHER RADAR AND OBSERVTION DETECTED A VERY HEAVY
THUNDERSTORM JUST SOUTHEAST OF ROANOKE CITY MOVING TO THE NORTHEAST AT
25 MPH.
HEAVY DOWNPOURS..STRONG GUSTY WINDS..DANGEREOUS LIGHTNING..SMALL HAIL
ALONG WITH SMALL STREAM AND URBAN FLOODING MAY BE EXPECTED WITH THE
PASSAGE OF THIS STORM.
PERSONS SHOULD BE ALERT DURING THE PASSAGE OF THIS STORM..TO TAKE
INDOOR SHELTER AMD TO AVOID LOW LYING AREAS PRONE TO SMALL STREAM
AND URBAN FLOODING.
STAY TUNED TO THE NATIONAL WEATHER RADIO TV AND LOCAL RADIO FOR UPDATES.
$$WB
[Special weather statement, Jul 3, 3:55 PM EDT, 4 hours 20 minutes before
^WBCSPSROA SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE ROANOKE VA 335 PM EDT FRI JUL 03 1987 ...VERY HEAVY THUNDERSTORM IN SOUTHEAST ROANOKE COUNTY VA... AT 325 PM EDT WEATHER RADAR AND OBSERVTION DETECTED A VERY HEAVY THUNDERSTORM JUST SOUTHEAST OF ROANOKE CITY MOVING TO THE NORTHEAST AT 25 MPH. HEAVY DOWNPOURS..STRONG GUSTY WINDS..DANGEREOUS LIGHTNING..SMALL HAIL ALONG WITH SMALL STREAM AND URBAN FLOODING MAY BE EXPECTED WITH THE PASSAGE OF THIS STORM. PERSONS SHOULD BE ALERT DURING THE PASSAGE OF THIS STORM..TO TAKE INDOOR SHELTER AMD TO AVOID LOW LYING AREAS PRONE TO SMALL STREAM AND URBAN FLOODING. STAY TUNED TO THE NATIONAL WEATHER RADIO TV AND LOCAL RADIO FOR UPDATES.# $$WB
The office that day
Everything else NWS Blacksburg, VA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 3, 8:31 PM EDT | Severe Thunderstorm Warning | RNK | Alamance | 59 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; the sounding from the Mesonet's radiosonde archive.