Alert archive / North Carolina / Severe Thunderstorm Warnings in 2010

Severe Thunderstorm Warning 415, NWS Greenville-Spartanburg, SC

August 19, 20106 counties in North Carolina

NWS Greenville-Spartanburg, SC issued this severe thunderstorm warning at Aug 19, 2010, 4:22 PM EDT for 6 counties in North Carolina. It was in force for 57 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: Aug 19, 2010, 4:22 PM EDT (20:22 UTC)
Expired: Aug 19, 2010, 5:19 PM EDT
In force: 57 min
Issued by: NWS Greenville-Spartanburg, SC
Area: Storm-based polygon

Counties Avery County, NC, Burke County, NC, Caldwell County, NC, McDowell County, NC, Mitchell County, NC, Yancey County, NC

The radar

The Greer radar (KGSP), 115 km from the middle of the area, began a volume at 20:24 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

Greensboro/Hi Pt, NC (KGSO), launched 12:00Z, 8.4 hours before the alert went out and 185 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: 870 J/kg
Mixed-layer CIN: -6 J/kg
Mixed-layer LCL: 512 m above ground
0-6 km bulk shear: 36 kt
0-1 km storm-relative helicity: 83 m²/s²
0-3 km storm-relative helicity: 107 m²/s²
Significant tornado parameter: 0.3
Supercell composite: 1.8

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 Aug 19, 2:43 PM EDT, 1 hour 39 minutes earlier.

Area forecast discussion, Aug 19, 2:43 PM EDT, 1 hour 39 minutes before

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Hazardous weather outlook, Aug 19, 3:14 PM EDT, 1 hour 8 minutes before

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In the hours before

Local storm report, Aug 19, 10:35 AM EDT, 5 hours 47 minutes before

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Local storm report, Aug 19, 10:43 AM EDT, 5 hours 39 minutes before

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Local storm report, Aug 19, 12:37 PM EDT, 3 hours 45 minutes before

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Special weather statement, Aug 19, 4:07 PM EDT, 15 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
Aug 18, 8:59 PM EDT	Special Weather Statement	GSP	Alexander	31 min
Aug 18, 9:10 PM EDT	Severe Thunderstorm Warning	GSP	Alexander, Catawba, Iredell	52 min
Aug 18, 9:14 PM EDT	Special Weather Statement	GSP	Polk	31 min
Aug 18, 10:42 PM EDT	Areal Flood Advisory	GSP	Alexander	108 min
Aug 19, 4:33 AM EDT	Areal Flood Advisory	GSP	Mecklenburg	3 hr
Aug 19, 4:56 AM EDT	Areal Flood Advisory	GSP	Gaston	3 hr
Aug 19, 5:22 AM EDT	Areal Flood Advisory	GSP	Cleveland	113 min
Aug 19, 5:36 AM EDT	Flash Flood Warning	GSP	Cabarrus, Mecklenburg	3 hr
Aug 19, 5:40 AM EDT	Flash Flood Warning	GSP	Cleveland, Gaston	3 hr
Aug 19, 8:26 AM EDT	Areal Flood Warning	GSP	Cabarrus, Mecklenburg	6 hr
Aug 19, 4:07 PM EDT	Special Weather Statement	GSP	Avery, Mitchell	23 min
Aug 19, 4:49 PM EDT	Special Weather Statement	GSP	Union	26 min
Aug 19, 5:16 PM EDT	Areal Flood Advisory	GSP	Mecklenburg	3 hr
Aug 19, 5:36 PM EDT	Special Weather Statement	GSP	McDowell	24 min
Aug 19, 5:41 PM EDT	Severe Thunderstorm Warning	GSP	Burke, McDowell, Rutherford	36 min
Aug 19, 5:49 PM EDT	Areal Flood Advisory	GSP	Davie, Rowan	116 min
Aug 19, 7:10 PM EDT	Flash Flood Warning	GSP	Rowan	3 hr
Aug 19, 4:54 PM EDT	Special Weather Statement	GSP	Laurens	36 min
Aug 19, 5:27 PM EDT	Special Weather Statement	GSP	Cherokee, Union	33 min
Aug 19, 6:06 PM EDT	Special Weather Statement	GSP	Laurens	24 min
Aug 19, 7:07 PM EDT	Special Weather Statement	GSP	Union	38 min
Aug 19, 6:51 PM EDT	Special Weather Statement	GSP	Elbert	24 min

Nearby

Severe Thunderstorm Warnings in North Carolina, 2010 Every severe thunderstorm warning in 2010

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.