Alert archive / North Carolina / Severe Thunderstorm Warnings in 1986

Severe Thunderstorm Warning 13, NWS Newport/Morehead City, NC

July 29, 1986Dare County, North Carolina

NWS Newport/Morehead City, NC issued this severe thunderstorm warning at Jul 29, 1986, 8:11 PM EDT for Dare County, North Carolina. It was in force for 64 min.

The area

The counties it named.

The facts

Issued
Jul 29, 1986, 8:11 PM EDT (00:11 UTC)
Expired
Jul 29, 1986, 9:15 PM EDT
In force
64 min
Issued by
NWS Newport/Morehead City, NC
Area
Whole counties

County Dare 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

Cape Hatteras, NC (KHAT), launched 00:00Z, 0.2 hours before the alert went out and 63 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, Cape Hatteras, NC at 00:00Z on 1986-07-30Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 3137 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Cape Hatteras, NC at 00:00Z on 1986-07-30The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 23 square meters per square second.193958Sfc1 km3 km6 km9 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
3137 J/kg
Mixed-layer CIN
-30 J/kg
Mixed-layer LCL
769 m above ground
0-6 km bulk shear
12 kt
0-1 km storm-relative helicity
23 m²/s²
0-3 km storm-relative helicity
53 m²/s²
Significant tornado parameter
0.3
Supercell composite
2.7

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
TTAA00 KHAT 300013
SVRHAT
NCC055-300115-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM AND SPECIAL MARINE WARNING
NATIONAL WEATHER SERVICE HATTERAS NC
811 PM EDT TUE JUL 29 1986

THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM AND
SPECIAL MARINE WARNING EFFECTIVE UNTIL 915 PM EDT FOR PEOPLE IN THE
FOLLOWING COUNTY OF

NORTH CAROLINA...NORTHERN DARE
...THIS WARNING ALSO INCLUDES THE ADJACENT WATERS FOR DARE
COUNTY.

AT 756 PM, A SEVERE THUNDERSTORM WITH WIND GUST TO 60 MILES AN HOUR
WAS REPORTED BY THE BRIDGE TENDER ON THE ALLIGATOR RIVER

THE PROJECTED PATH OF THIS STORM IS OVER OR NEAR MANNS HARBOR AND
ROANOKE ISLAND IN NORTHERN DARE COUNTY.

THIS IS A DANGEROUS STORM...TAKE COVER IMMEDIATELY IF YOU ARE IN ITS
PATH.

REPORT ANY SEVERE WEATHER TO THE NEAREST LAW ENFORCEMENT AGENCY
FOR RELAY TO THE NATIONAL WEATHER SERVICE.

MARINERS SHOULD SEEK SAFE HARBOR...OR PREPARE YOUR VESSEL FOR ROUGH
WEATHER. IF A WATERSPOUT IS SIGHTED...MOVE OUT OF ITS PATH QUICKLY.

 THE STORM IS MOVING EAST-SOUTHEAST AT 20 MILES AN HOUR AND WILL
 REACH ROANOKE ISLAND BY 840 THIS EVENING.

DEMAURICE

The office that day

Everything else NWS Newport/Morehead City, NC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jul 29, 9:11 PM EDTSevere Thunderstorm WarningMHXTyrrell64 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; the sounding from the Mesonet's radiosonde archive.