Alert archive / South Carolina / Severe Thunderstorm Warnings in 2016

Severe Thunderstorm Warning 233, NWS Greenville-Spartanburg, SC

September 27, 20164 counties in South Carolina

NWS Greenville-Spartanburg, SC issued this severe thunderstorm warning at Sep 27, 2016, 11:06 PM EDT for 4 counties in South Carolina. It was in force for 39 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: Sep 27, 2016, 11:06 PM EDT (03:06 UTC)
Expired: Sep 27, 2016, 11:45 PM EDT
In force: 39 min
Issued by: NWS Greenville-Spartanburg, SC
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Abbeville County, SC, Anderson County, SC, Greenville County, SC, Laurens County, SC

The radar

The Greer radar (KGSP), 42 km from the middle of the area, began a volume at 03:09 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 00:00Z, 3.1 hours before the alert went out and 283 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: 1579 J/kg
Mixed-layer CIN: -8 J/kg
Mixed-layer LCL: 824 m above ground
0-6 km bulk shear: 30 kt
0-1 km storm-relative helicity: 90 m²/s²
0-3 km storm-relative helicity: 110 m²/s²
Significant tornado parameter: 0.6
Supercell composite: 4.0

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 Sep 27, 10:36 PM EDT, 30 minutes earlier.

Area forecast discussion, Sep 27, 10:36 PM EDT, 30 minutes before

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Hazardous weather outlook, Sep 27, 10:40 PM EDT, 26 minutes before

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In the hours before

Special weather statement, Sep 27, 6:54 PM EDT, 4 hours 12 minutes before

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Special weather statement, Sep 27, 7:17 PM EDT, 3 hours 49 minutes before

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Local storm report, Sep 27, 8:24 PM EDT, 2 hours 42 minutes before

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Local storm report, Sep 27, 9:02 PM EDT, 2 hours 4 minutes before

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Local storm report, Sep 27, 9:24 PM EDT, 1 hour 42 minutes before

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Special weather statement, Sep 27, 10:58 PM EDT, 8 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
Sep 28, 3:07 PM EDT	Special Weather Statement	GSP	Iredell	23 min
Sep 28, 3:19 PM EDT	Special Weather Statement	GSP	Caldwell	56 min
Sep 28, 3:26 PM EDT	Severe Thunderstorm Warning	GSP	Davie, Iredell, Rowan	58 min
Sep 28, 3:42 PM EDT	Severe Thunderstorm Warning	GSP	Caldwell	33 min
Sep 28, 3:44 PM EDT	Special Weather Statement	GSP	McDowell	46 min
Sep 28, 4:14 PM EDT	Special Weather Statement	GSP	Burke	31 min
Sep 28, 4:34 PM EDT	Severe Thunderstorm Warning	GSP	Burke, Caldwell	28 min
Sep 28, 4:52 PM EDT	Special Weather Statement	GSP	Davie	38 min
Sep 28, 5:29 PM EDT	Special Weather Statement	GSP	Mecklenburg	31 min
Sep 28, 5:49 PM EDT	Special Weather Statement	GSP	Cabarrus	41 min
Sep 28, 6:20 PM EDT	Severe Thunderstorm Warning	GSP	Cabarrus, Mecklenburg, Union	40 min
Sep 28, 6:42 PM EDT	Special Weather Statement	GSP	Rowan	48 min
Sep 28, 6:47 PM EDT	Special Weather Statement	GSP	Mecklenburg	43 min
Sep 28, 7:16 PM EDT	Special Weather Statement	GSP	Cabarrus	59 min
Sep 28, 7:30 PM EDT	Severe Thunderstorm Warning	GSP	Cabarrus	33 min
Sep 28, 7:39 PM EDT	Special Weather Statement	GSP	Union	51 min
Sep 28, 7:56 PM EDT	Special Weather Statement	GSP	Rowan	49 min
Sep 27, 9:39 PM EDT	Areal Flood Advisory	GSP	Greenwood	66 min
Sep 27, 10:58 PM EDT	Special Weather Statement	GSP	Anderson	32 min
Sep 27, 11:48 PM EDT	Areal Flood Advisory	GSP	Greenwood	117 min
Sep 28, 1:49 AM EDT	Areal Flood Warning	GSP	Greenwood	3 hr
Sep 28, 6:24 PM EDT	Special Weather Statement	GSP	York	51 min
Sep 28, 7:47 PM EDT	Special Weather Statement	GSP	Chester	43 min

Nearby

Severe Thunderstorm Warnings in South Carolina, 2016 Every severe thunderstorm warning in 2016

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.