Alert archive / North Carolina / Severe Thunderstorm Warnings in 1991

Severe Thunderstorm Warning 9, NWS Newport/Morehead City, NC

March 29, 1991Dare County, North Carolina

NWS Newport/Morehead City, NC issued this severe thunderstorm warning at Mar 29, 1991, 9:22 PM EST for Dare County, North Carolina. It was in force for 53 min.

The area

The counties it named.

The facts

Issued
Mar 29, 1991, 9:22 PM EST (02:22 UTC)
Expired
Mar 29, 1991, 10:15 PM EST
In force
53 min
Issued by
NWS Newport/Morehead City, NC
Area
Whole counties

County Dare County, NC

The nearest sounding before it

Cape Hatteras, NC (KHAT), launched 00:00Z, 2.4 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 1991-03-30Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 321 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 1991-03-30The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 413 square meters per square second.19395878Sfc1 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
321 J/kg
Mixed-layer CIN
-22 J/kg
Mixed-layer LCL
612 m above ground
0-6 km bulk shear
50 kt
0-1 km storm-relative helicity
413 m²/s²
0-3 km storm-relative helicity
465 m²/s²
Significant tornado parameter
0.8
Supercell composite
4.3

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.

The office that day

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

IssuedProductOfficeCountiesLasted
Mar 29, 7:18 PM ESTTornado WarningMHXPasquotank, Perquimans27 min
Mar 29, 7:18 PM ESTTornado WarningMHXChowan27 min
Mar 29, 8:05 PM ESTSevere Thunderstorm WarningMHXTyrrell, Washington40 min
Mar 29, 9:22 PM ESTSevere Thunderstorm WarningMHXTyrrell53 min

Nearby

Severe Thunderstorm Warnings in North Carolina, 1991Every severe thunderstorm warning in 1991

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.