Alert archive / North Carolina / Severe Thunderstorm Warnings in 1986

Severe Thunderstorm Warning 90, NWS Raleigh, NC

August 27, 1986Johnston County, North Carolina

NWS Raleigh, NC issued this severe thunderstorm warning at Aug 27, 1986, 6:06 PM EDT for Johnston County, North Carolina. It was in force for 64 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 27, 1986, 6:06 PM EDT (22:06 UTC)
Expired: Aug 27, 1986, 7:10 PM EDT
In force: 64 min
Issued by: NWS Raleigh, NC
Area: Whole counties

County Johnston 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 27, 6:10 PM EDT	Thunderstorm Wind 0	Johnston, 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, 10.1 hours before the alert went out and 152 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 585 J/kg
Mixed-layer CIN: -63 J/kg
Mixed-layer LCL: 749 m above ground
0-6 km bulk shear: 22 kt
0-1 km storm-relative helicity: 85 m²/s²
0-3 km storm-relative helicity: 84 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.5

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 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 27, 3:12 PM EDT, 2 hours 54 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREENSBORO NC
310 PM EDT WED AUG 27 1986

...THUNDERSTORMS STARTING TO DEVELOPE ACROSS THE NORTHWEST PIEDMONT OF
NORTH CAROLINA...

AT 300 PM RADAR SHOWED HEAVY THUNDERSTORMS IN EASTERN ALMANCE....
SOUTHEAST GUILFORD AND RANDOLPH COUNTIES OF MORTH CAROLINA.

THESE THUNDERSTORMS MAY PRODUCE...HEAVY DOWNPOURS...STRONG GUSTY WINDS..
SOME HAIL...FREQUENT LIGHTNING...AS THEY MOVE TO THE EAST AT 25 MPH.

PERSONS IN THE NORTHWEST PIEDMONT OF NORTH CAROLINA SHOULD BE ON THE
LOOKOUT FOR THREATENING WEATHER CONDITIONS AND SHOULD TAKE SHELTER AS
STORMS APPROACH.

RJD

Special weather statement, Aug 27, 3:39 PM EDT, 2 hours 27 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREENSBORO NC
340 PM EDT WED AUG 27 1986

...SEVERE THUNDERSTORM WATCH IN EFFECT FOR ALAMANCE...CASWELL...AND
ROCKINGHAM COUNTIES OF THE NORTHWEST PIEDMONT OF NORTH CAROLINA...

AT 330 PM RADAR SHOWED HEAVY THUNDERSTORMS IN EASTERN ALMANCE....
SOUTHEAST GUILFORD AND RANDOLPH COUNTIES OF MORTH CAROLINA.

THESE THUNDERSTORMS MAY PRODUCE...HEAVY DOWNPOURS...STRONG GUSTY WINDS..
LARGE HAIL...FREQUENT LIGHTNING...AS THEY MOVE TO THE EAST AT 25 MPH.

REMEMBER...A SEVERE THUNDERSTORM WATCH MEANS CONDITIONS ARE FAVORABLE
FOR SEVERE THUNDERSTORMS IN AND CLOSE TO THE WATCH AREA.

PERSONS IN THE NORTHWEST PIEDMONT OF NORTH CAROLINA SHOULD BE ON THE
LOOKOUT FOR THREATENING WEATHER CONDITIONS AND SHOULD TAKE SHELTER AS
STORMS APPROACH.
RJD

Local storm report, Aug 27, 4:08 PM EDT, 1 hour 58 minutes before

STORM REPORT
NATIONAL WEATHER SERVICE RALEIGH/DURHAM, NC
402 PM EDT WED AUG 27 1986

TIME           EVENT
 335PM EDT     DURHAM NC EMERGENCY MANAGEMENT RELAYED REPORT OF MARBLE
               SIZE HAIL AND ESTIEMATED WIND GUST TO 50 KNOTS 3 MILES
               NORTH OF DURHAM CITY FROM A NAVAL WEATHER SERVICE
               RESERVIST.

341PM EDT      DURHAM NC WARNING POINT RELAYED PUBLIC REPORT OF FUNNEL
               CLOUD NEAR TRINITY AND NORTH STREETS IN THE NORTHWEST
               PART OF DURHAM CITY.

HLW

Special weather statement, Aug 27, 5:09 PM EDT, 57 minutes before

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Special weather statement, Aug 27, 5:53 PM EDT, 13 minutes before

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        The site you requested is temporarily down for maintenance or an unexpected outage.
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The office that day

Everything else NWS Raleigh, NC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Aug 27, 2:49 PM EDT	Severe Thunderstorm Warning	RAH	Orange	61 min
Aug 27, 3:04 PM EDT	Tornado Warning	RAH	Orange	41 min
Aug 27, 3:33 PM EDT	Severe Thunderstorm Warning	RAH	Durham	57 min
Aug 27, 4:02 PM EDT	Severe Thunderstorm Warning	RAH	Chatham	58 min
Aug 27, 4:52 PM EDT	Severe Thunderstorm Warning	RAH	Franklin	68 min

Nearby

Severe Thunderstorm Warnings in North Carolina, 1986 Every 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.