Alert archive / North Carolina / Severe Thunderstorm Warnings in 2014

Severe Thunderstorm Warning 317, NWS Greenville-Spartanburg, SC

October 14, 20144 counties in North Carolina

NWS Greenville-Spartanburg, SC issued this severe thunderstorm warning at Oct 14, 2014, 10:29 PM EDT for 4 counties in North Carolina. It was in force for 46 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: Oct 14, 2014, 10:29 PM EDT (02:29 UTC)
Expired: Oct 14, 2014, 11:15 PM EDT
In force: 46 min
Issued by: NWS Greenville-Spartanburg, SC
Area: Storm-based polygon

Counties Alexander County, NC, Caldwell County, NC, Catawba County, NC, Iredell County, NC

The radar

The Greer radar (KGSP), 140 km from the middle of the area, began a volume at 02:30 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 watch it was issued in

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

Issued	Product	Office	Lasted
Oct 14, 1:59 PM EDT	Tornado Watch	SPC	11 hr

The nearest sounding before it

Greensboro/Hi Pt, NC (KGSO), launched 00:00Z, 2.5 hours before the alert went out and 120 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: 442 J/kg
Mixed-layer CIN: -3 J/kg
Mixed-layer LCL: 805 m above ground
0-6 km bulk shear: 36 kt
0-1 km storm-relative helicity: 215 m²/s²
0-3 km storm-relative helicity: 264 m²/s²
Significant tornado parameter: 0.4
Supercell composite: 2.9

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 Oct 14, 10:02 PM EDT, 27 minutes earlier.

Area forecast discussion, Oct 14, 10:02 PM EDT, 27 minutes before

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Hazardous weather outlook, Oct 14, 9:45 PM EDT, 44 minutes before

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In the hours before

Local storm report, Oct 14, 9:20 PM EDT, 1 hour 9 minutes before

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Special weather statement, Oct 14, 9:27 PM EDT, 1 hour 2 minutes before

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Special weather statement, Oct 14, 9:45 PM EDT, 44 minutes before

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Local storm report, Oct 14, 9:48 PM EDT, 41 minutes before

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Special weather statement, Oct 14, 10:20 PM EDT, 9 minutes before

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Local storm report, Oct 14, 10:22 PM EDT, 7 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
Oct 14, 8:30 PM EDT	Special Weather Statement	GSP	Rutherford	30 min
Oct 14, 8:38 PM EDT	Flash Flood Warning	GSP	Avery, Burke, Caldwell, McDowell, Mitchell, Yancey	3 hr
Oct 14, 9:02 PM EDT	Special Weather Statement	GSP	Avery, McDowell	43 min
Oct 14, 9:03 PM EDT	Special Weather Statement	GSP	Burke, Caldwell	42 min
Oct 14, 9:16 PM EDT	River Flood Warning	GSP	Henderson, Transylvania	43 hr
Oct 14, 9:27 PM EDT	Special Weather Statement	GSP	Cleveland	48 min
Oct 14, 9:38 PM EDT	Areal Flood Advisory	GSP	Rutherford	112 min
Oct 14, 9:45 PM EDT	Special Weather Statement	GSP	Caldwell	30 min
Oct 14, 9:48 PM EDT	Severe Thunderstorm Warning	GSP	Alexander, Burke, Caldwell, Catawba, Cleveland, Lincoln and 1 more	42 min
Oct 14, 10:20 PM EDT	Special Weather Statement	GSP	Gaston	25 min
Oct 14, 10:59 PM EDT	Areal Flood Warning	GSP	Henderson	2 hr
Oct 14, 11:00 PM EDT	Special Weather Statement	GSP	Gaston, Mecklenburg	30 min
Oct 14, 11:12 PM EDT	Special Weather Statement	GSP	Iredell	48 min
Oct 14, 11:29 PM EDT	Areal Flood Warning	GSP	Avery, Mitchell	2 hr
Oct 14, 8:33 PM EDT	Special Weather Statement	GSP	Laurens, Spartanburg	42 min
Oct 14, 8:54 PM EDT	Areal Flood Advisory	GSP	Greenville	2 hr

Nearby

Severe Thunderstorm Warnings in North Carolina, 2014 Every severe thunderstorm warning in 2014

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.