Alert archive / North Carolina / Severe Thunderstorm Warnings in 2006

Severe Thunderstorm Warning 85, NWS Greenville-Spartanburg, SC

April 20, 2006Jackson County, North Carolina

NWS Greenville-Spartanburg, SC issued this severe thunderstorm warning at Apr 20, 2006, 5:43 PM EDT for Jackson County, North Carolina. It was in force for 37 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: Apr 20, 2006, 5:43 PM EDT (21:43 UTC)
Expired: Apr 20, 2006, 6:20 PM EDT
In force: 37 min
Issued by: NWS Greenville-Spartanburg, SC
Area: Counties, with a storm outline in the text

County Jackson County, NC

The radar

The Greer radar (KGSP), 95 km from the middle of the area, began a volume at 21:43 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

The nearest sounding before it

Peachtre/Fal Fld, GA (KFFC), launched 12:00Z, 9.7 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-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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 1516 m above ground
0-6 km bulk shear: 19 kt
0-1 km storm-relative helicity: 51 m²/s²
0-3 km storm-relative helicity: -19 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

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.

NWS Greenville-Spartanburg, SC wrote its last area forecast discussion before this severe thunderstorm warning went out at Apr 20, 2:12 PM EDT, 3 hours 31 minutes earlier.

Area forecast discussion, Apr 20, 2:12 PM EDT, 3 hours 31 minutes before

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Hazardous weather outlook, Apr 20, 6:02 AM EDT, 11 hours 41 minutes before

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In the hours before

Special weather statement, Apr 20, 1:30 PM EDT, 4 hours 13 minutes before

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Local storm report, Apr 20, 3:35 PM EDT, 2 hours 8 minutes before

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Special weather statement, Apr 20, 4:45 PM EDT, 58 minutes before

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Special weather statement, Apr 20, 5:15 PM EDT, 28 minutes before

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Local storm report, Apr 20, 5:33 PM EDT, 10 minutes before

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Local storm report, Apr 20, 5:43 PM EDT, 0 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 20, 3:13 AM EDT	Dense Fog Advisory	GSP	Alexander, Cabarrus, Catawba, Cleveland, Davie, Gaston and 5 more	6 hr
Apr 20, 9:08 AM EDT	Dense Fog Advisory	GSP	Alexander, Cabarrus, Catawba, Cleveland, Davie, Gaston and 5 more	110 min
Apr 20, 2:34 PM EDT	Severe Thunderstorm Warning	GSP	Transylvania	56 min
Apr 20, 5:00 PM EDT	Severe Thunderstorm Warning	GSP	Macon	60 min

Nearby

Severe Thunderstorm Warnings in North Carolina, 2006 Every severe thunderstorm warning in 2006

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; radar from the NEXRAD Level II archive.