Alert archive / North Carolina / Severe Thunderstorm Warnings in 1986
Severe Thunderstorm Warning 82, NWS Raleigh, NC
NWS Raleigh, NC issued this severe thunderstorm warning at Aug 11, 1986, 5:44 PM EDT for Orange County, North Carolina. It was in force for 56 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
- Aug 11, 1986, 5:44 PM EDT (21:44 UTC)
- Expired
- Aug 11, 1986, 6:40 PM EDT
- In force
- 56 min
- Issued by
- NWS Raleigh, NC
- Area
- Whole counties
County Orange 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 |
|---|---|---|---|
| Aug 11, 6:30 PM EDT | Thunderstorm Wind 0 | Orange, 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, 9.7 hours before the alert went out and 70 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
- 688 J/kg
- Mixed-layer CIN
- -61 J/kg
- Mixed-layer LCL
- 762 m above ground
- 0-6 km bulk shear
- 29 kt
- 0-1 km storm-relative helicity
- 53 m²/s²
- 0-3 km storm-relative helicity
- 79 m²/s²
- Significant tornado parameter
- 0.1
- Supercell composite
- 1.1
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, Aug 11, 1:49 PM EDT, 3 hours 55 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE RALEIGH/DURHAM, NC 147 PM EDT MON AUG 11 1986 ...THUNDERSTORMS BEGINNING TO DEVELOP ACROSS NORTH CAROLINA... AT 140 PM EDT.. WEATHER RADAR SHOWED SCATTERED THUNDERSTORMS DEVELOPING OVER THE PIEDMONT..FOOTHILLS AND MOUNTAINS OF NORTH CAROLINA. IN THE NORTHEAST PIEDMONT.. AN INTENSE THUNDERSTORM HAS DEVELOPED RAPIDLY NEAR THE DURHAM-GRANVILLE COUNTY LINE AND IS LIKELY TO AFFECT SOUTHERN GRANVILLE COUNTY BY 230 PM. ANOTHER STRONG THUNDERSTORM HAS BEEN DETECTED JUST SOUTHWEST OF KERR LAKE NORTH OF HENDERSON. THESE THUNDERSTORMS HAVE BEEN MOVING NORTHEAST AT 25 MILES AN HOUR. PEOPLE IN THE PATH OF THESE STORMS MAY EXPERIENCE INTENSE LIGHTNING ..SUDDEN GUSTY WIND.. AND POSSIBLY SOME HAIL. ALSO HEAVY RAIN MAY CAUSE HAZARDOUS DRIVING BECAUSE OF REDUCED VISIBILITY AND PONDING OF WATER ON HIGHWAYS. LISTN TO LOCAL RADIO..TV..OR WEATHER RADIO FOR LATER STATEMENTS OF POSSIBLE WARNINGS. RFG
Special weather statement, Aug 11, 3:12 PM EDT, 2 hours 32 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE GREENSBORO NC 310 PM EDT SUN AUG 10 1986 ...SEVERE THUNDERSTORM WATCH IN EFFECT FOR MUCH OF THE NORTHWEST PIEDMONT OF NORTH CAROLINA UNTIL 900 PM... AT 305 PM RADAR SHOWED A LINE OF DEVELOPING THUNDERSTORMS FROM PILOT MOUNTAIN IN SURRY COUNTY THROUGH TAYLORSVILLE IN ALEXANDER COUNTY. THE HEAVIEST STORM IN THIS LINE WAS OVER SOUTHERN ALEXANDER COUNTY.. SOUTH OF TAYLORSVILLE. THE STORMS WERE MOVING EAST NORTHEAST AT 30 MPH. AS THESE STORMS CONTINUE TO MOVE EASTWARD ACROSS THE NORTHWEST PIEDMONT THIS AFTERNOON AND EVENING HAIL..DAMAGING WINDS..FREQUENT LIGHTNING AND VERY HEAVY DOWNPOURS ARE LIKELY TO DEVELOP. PEOPLE IN THE NORTHWEST PIEDMONT OF NORTH CAROLINA SHOULD BE ON THE LOOKOUT FOR DANGEROUS WEATHER CONDITIONS AND SHOULD TAKE SHELTER BEFORE THEY APPROACH. A SEVERE THUNDERSTORM WARNING CONTINUES IN EFFECT FOR ALAMANCE COUNTY UNTIL 400 PM. RBN
Special weather statement, Aug 11, 4:16 PM EDT, 1 hour 28 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE GREENSBORO NC 415 PM EDT SUN AUG 10 1986 ...SEVERE THUNDERSTORM WATCH IN EFFECT FOR MUCH OF THE NORTHWEST PIEDMONT OF NORTH CAROLINA UNTIL 900 PM... AT 410 PM RADAR SHOWED STRONG THUNDERSTORMS OVER THE NORTHERN MOUNTAINS..NORTHERN FOOTHILLS AND NORTHWEST PIEDMONT OF NORTH CAROLINA. THE HEAVIEST STORMS WERE SOUTHEAST OF STATESVILLE..JUST WEST OF MOCKSVILLE AND BETWEEN BETWEEN HIGH POINT AND ASHEBORO. THE STORMS WERE MOVING NORTHEAST AT ABOUT 35 MPH. AS THESE STORMS CONTINUE TO MOVE EASTWARD ACROSS THE NORTHWEST PIEDMONT THIS AFTERNOON AND EVENING HAIL..DAMAGING WINDS..FREQUENT LIGHTNING AND VERY HEAVY DOWNPOURS ARE POSSIBLE. PEOPLE IN THE NORTHWEST PIEDMONT OF NORTH CAROLINA SHOULD BE ON THE LOOKOUT FOR DANGEROUS WEATHER CONDITIONS AND SHOULD TAKE SHELTER BEFORE THEY APPROACH. VERY HEAVY RAINS..FREQUENT LIGHTNING AND STRONG GUSTY WINDS ARE ALSO POSSIBLE IN THE NORTHERN MOU+NTAINS AND NORTHERN FOOTHILLS. PEOPLE THERE SHOULD ALSO BE ON THE LOOKOUT FOR THREATENING WEATHER CONDITIONS AND SHOULD TAKE SHELTER IF NECESSARY. RBN
Special weather statement, Aug 11, 5:27 PM EDT, 17 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE GREENSBORO NC 528 PM EDT SUN AUG 10 1986 ...SEVERE THUNDERSTORM WATCH IN EFFECT FOR MUCH OF THE NORTHWEST PIEDMONT OF NORTH CAROLINA UNTIL 900 PM... AT 525 PM RADAR SHOWED STRONG THUNDERSTORMS OVER THE NORTHWEST PIEDMONT OF NORTH CAROLINA EXTENDING FROM CASWELL COUNTY..THROUGH GUILFORD AND NORTHERN RANDOLPH COUNTIES INTO SOUTHERN DAVIDSON COUNTY. THE STRONGEST STORMS WERE OVER CASWELL AND NORTHWEST RANDOLPH COUNTIES. THE STORMS WERE MOVING EAST AT ABOUT 35 MPH. AS THESE STORMS CONTINUE TO MOVE EASTWARD ACROSS THE NORTHWEST PIEDMONT THIS EVENING.. HAIL..DAMAGING WINDS..FREQUENT LIGHTNING AND VERY HEAVY DOWNPOURS ARE POSSIBLE. OVER AN INCH AND A HALF OF RAIN HAS FALLEN AT THE TRIAD REGIONAL AIRPORT BETWEEN 445 AND 525 PM. PERSONS IN THE NORTHWEST PIEDMONT OF NORTH CAROLINA SHOULD BE ON THE LOOKOUT FOR THREATENING WEATHER CONDITIONS AND SHOULD TAKE SHELTER AS STORMS APPROACH.. RBN
The office that day
Everything else NWS Raleigh, NC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 11, 2:06 PM EDT | Severe Thunderstorm Warning | RAH | Granville, Vance | 69 min |
| Aug 11, 2:41 PM EDT | Severe Thunderstorm Warning | RAH | Franklin | 64 min |
| Aug 11, 2:57 PM EDT | Severe Thunderstorm Warning | RAH | Orange | 43 min |
| Aug 11, 3:26 PM EDT | Severe Thunderstorm Warning | RAH | Durham | 34 min |
| Aug 11, 3:45 PM EDT | Severe Thunderstorm Warning | RAH | Wake | 30 min |
| Aug 11, 4:17 PM EDT | Severe Thunderstorm Warning | RAH | Halifax | 33 min |
| Aug 11, 4:20 PM EDT | Severe Thunderstorm Warning | RAH | Franklin | 40 min |
| Aug 11, 4:53 PM EDT | Severe Thunderstorm Warning | RAH | Halifax | 67 min |
| Aug 11, 7:12 PM EDT | Severe Thunderstorm Warning | RAH | Wake | 48 min |
| Aug 11, 7:29 PM EDT | Severe Thunderstorm Warning | RAH | Greene, Pitt | 61 min |
Nearby
Severe Thunderstorm Warnings in North Carolina, 1986Every severe thunderstorm warning in 1986
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.