Alert archive / North Carolina / Severe Thunderstorm Warnings in 1987
Severe Thunderstorm Warning 14, NWS Blacksburg, VA
NWS Blacksburg, VA issued this severe thunderstorm warning at Jul 3, 1987, 8:31 PM EDT for Alamance County, North Carolina. It was in force for 59 min. 1 report 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
- Jul 3, 1987, 8:31 PM EDT (00:31 UTC)
- Expired
- Jul 3, 1987, 9:30 PM EDT
- In force
- 59 min
- Issued by
- NWS Blacksburg, VA
- Area
- Whole counties
County Alamance 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
| Time | Report | Where | Remark |
|---|---|---|---|
| Jul 3, 8:42 PM EDT | Thunderstorm Wind 0 | Alamance, 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 00:00Z, 0.5 hours before the alert went out and 45 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
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 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 50 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 48 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.
$$WB
[Special weather statement, Jul 3, 3:55 PM EDT, 4 hours 36 minutes before
^WBCSPSROA SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE ROANOKE VA 335 PM EDT FRI JUL 03 1987 ...VERY HEAVY THUNDERSTORM IN SOUTHEAST ROANOKE COUNTY VA... AT 325 PM EDT WEATHER RADAR AND OBSERVTION DETECTED A VERY HEAVY THUNDERSTORM JUST SOUTHEAST OF ROANOKE CITY MOVING TO THE NORTHEAST AT 25 MPH. HEAVY DOWNPOURS..STRONG GUSTY WINDS..DANGEREOUS LIGHTNING..SMALL HAIL ALONG WITH SMALL STREAM AND URBAN FLOODING MAY BE EXPECTED WITH THE PASSAGE OF THIS STORM. PERSONS SHOULD BE ALERT DURING THE PASSAGE OF THIS STORM..TO TAKE INDOOR SHELTER AMD TO AVOID LOW LYING AREAS PRONE TO SMALL STREAM AND URBAN FLOODING. STAY TUNED TO THE NATIONAL WEATHER RADIO TV AND LOCAL RADIO FOR UPDATES.# $$WB
The office that day
Everything else NWS Blacksburg, VA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 3, 8:15 PM EDT | Severe Thunderstorm Warning | RNK | Caswell | 60 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.