Alert archive / North Carolina / Severe Thunderstorm Warnings in 2009

Severe Thunderstorm Warning 293, NWS Greenville-Spartanburg, SC

July 23, 2009Rutherford County, North Carolina

NWS Greenville-Spartanburg, SC issued this severe thunderstorm warning at Jul 23, 2009, 2:59 PM EDT for Rutherford County, North Carolina. It was in force for 61 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: Jul 23, 2009, 2:59 PM EDT (18:59 UTC)
Expired: Jul 23, 2009, 4:00 PM EDT
In force: 61 min
Issued by: NWS Greenville-Spartanburg, SC
Area: Storm-based polygon

County Rutherford County, NC

The radar

The Greer radar (KGSP), 64 km from the middle of the area, began a volume at 19:00 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, 7.0 hours before the alert went out and 327 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: 1872 J/kg
Mixed-layer CIN: -14 J/kg
Mixed-layer LCL: 615 m above ground
0-6 km bulk shear: 30 kt
0-1 km storm-relative helicity: 38 m²/s²
0-3 km storm-relative helicity: 50 m²/s²
Significant tornado parameter: 0.1
Supercell composite: 0.5

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 Jul 23, 2:37 PM EDT, 22 minutes earlier.

Area forecast discussion, Jul 23, 2:37 PM EDT, 22 minutes before

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Hazardous weather outlook, Jul 23, 5:25 AM EDT, 9 hours 34 minutes before

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In the hours before

Special weather statement, Jul 23, 2:55 PM EDT, 4 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
Jul 22, 8:46 PM EDT	Severe Thunderstorm Warning	GSP	Davie, Iredell, Rowan	59 min
Jul 22, 9:16 PM EDT	Areal Flood Advisory	GSP	Rowan	36 min
Jul 22, 9:42 PM EDT	Severe Thunderstorm Warning	GSP	Cabarrus, Rowan	63 min
Jul 22, 9:50 PM EDT	Flash Flood Warning	GSP	Cabarrus, Rowan	3 hr
Jul 22, 10:16 PM EDT	Severe Thunderstorm Warning	GSP	Cabarrus, Mecklenburg	59 min
Jul 22, 10:33 PM EDT	Flash Flood Warning	GSP	Cabarrus, Mecklenburg	2 hr
Jul 23, 12:38 AM EDT	Areal Flood Warning	GSP	Cabarrus	3 hr
Jul 23, 4:32 AM EDT	Areal Flood Advisory	GSP	Cabarrus	6 hr
Jul 23, 10:17 AM EDT	Areal Flood Advisory	GSP	Cabarrus	118 min
Jul 23, 3:46 PM EDT	Severe Thunderstorm Warning	GSP	Henderson, Polk	59 min
Jul 23, 4:36 PM EDT	Severe Thunderstorm Warning	GSP	Alexander, Iredell	54 min
Jul 23, 4:57 PM EDT	Severe Thunderstorm Warning	GSP	Cleveland, Gaston	63 min
Jul 23, 6:01 PM EDT	Severe Thunderstorm Warning	GSP	Cabarrus, Mecklenburg	59 min
Jul 23, 6:49 PM EDT	Severe Thunderstorm Warning	GSP	Cabarrus, Union	27 min
Jul 23, 3:59 PM EDT	Severe Thunderstorm Warning	GSP	Oconee	35 min

Nearby

Severe Thunderstorm Warnings in North Carolina, 2009 Every severe thunderstorm warning in 2009

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.