Alert archive / North Carolina / Severe Thunderstorm Warnings in 1999

Severe Thunderstorm Warning 37, NWS Greenville-Spartanburg, SC

May 7, 1999Jackson County, North Carolina

NWS Greenville-Spartanburg, SC issued this severe thunderstorm warning at May 7, 1999, 6:12 PM EDT for Jackson County, North Carolina. It was in force for 33 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
May 7, 1999, 6:12 PM EDT (22:12 UTC)
Expired
May 7, 1999, 6:45 PM EDT
In force
33 min
Issued by
NWS Greenville-Spartanburg, SC
Area
Whole counties

County Jackson County, NC

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
May 7, 3:15 PM EDTTornado WatchSPC6 hr

The nearest sounding before it

Peachtre/Fal Fld, GA (KFFC), launched 12:00Z, 10.2 hours before the alert went out and 247 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, Peachtre/Fal Fld, GA at 12:00Z on 1999-05-07Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 362 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, Peachtre/Fal Fld, GA at 12:00Z on 1999-05-07The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 0 square meters per square second.1939Sfc1 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
362 J/kg
Mixed-layer CIN
-60 J/kg
Mixed-layer LCL
564 m above ground
0-6 km bulk shear
0 kt
0-1 km storm-relative helicity
0 m²/s²
0-3 km storm-relative helicity
0 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

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 Greenville-Spartanburg, SC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
May 7, 3:09 PM EDTSevere Thunderstorm WarningGSPGraham36 min
May 7, 3:45 PM EDTSevere Thunderstorm WarningGSPSwain65 min
May 7, 6:33 PM EDTSevere Thunderstorm WarningGSPHaywood47 min
May 7, 7:23 PM EDTSevere Thunderstorm WarningGSPBuncombe47 min
May 7, 7:44 PM EDTSevere Thunderstorm WarningGSPCaldwell31 min
May 7, 6:47 AM EDTSevere Thunderstorm WarningGSPOconee33 min
May 7, 7:27 AM EDTSevere Thunderstorm WarningGSPGreenville33 min
May 7, 6:32 AM EDTSevere Thunderstorm WarningGSPFranklin33 min

Nearby

Severe Thunderstorm Warnings in North Carolina, 1999Every severe thunderstorm warning in 1999

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.