Alert archive / North Carolina / Special Weather Statements in 2011

Special Weather Statement, NWS Greenville-Spartanburg, SC

July 12, 2011Graham County, Swain County, North Carolina

NWS Greenville-Spartanburg, SC issued this special weather statement at Jul 12, 2011, 5:13 AM EDT for Graham County, Swain County, North Carolina. It was in force for 47 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Jul 12, 2011, 5:13 AM EDT (09:13 UTC)
Expired: Jul 12, 2011, 6:00 AM EDT
In force: 47 min
Issued by: NWS Greenville-Spartanburg, SC

Counties Graham County, NC, Swain County, NC

The radar

The Knoxville radar (KMRX), 94 km from the middle of the area, began a volume at 09:15 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 00:00Z, 9.2 hours before the alert went out and 233 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: 1002 J/kg
Mixed-layer CIN: -56 J/kg
Mixed-layer LCL: 1445 m above ground
0-6 km bulk shear: 11 kt
0-1 km storm-relative helicity: 34 m²/s²
0-3 km storm-relative helicity: 25 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

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What forecasters said that day

The local office's own words before this special weather statement 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 special weather statement went out at Jul 12, 2:34 AM EDT, 2 hours 39 minutes earlier.

Area forecast discussion, Jul 12, 2:34 AM EDT, 2 hours 39 minutes before

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Hazardous weather outlook, Jul 11, 10:17 PM EDT, 6 hours 56 minutes before

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In the hours before

Special weather statement, Jul 12, 3:23 AM EDT, 1 hour 50 minutes before

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Special weather statement, Jul 12, 3:51 AM EDT, 1 hour 22 minutes before

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Special weather statement, Jul 12, 4:31 AM EDT, 42 minutes before

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Special weather statement, Jul 12, 5:13 AM 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
Jul 12, 3:23 AM EDT	Special Weather Statement	GSP	Avery, Mitchell, Yancey	37 min
Jul 12, 3:51 AM EDT	Special Weather Statement	GSP	Buncombe, Haywood, Madison, Mitchell, Yancey	39 min
Jul 12, 4:31 AM EDT	Special Weather Statement	GSP	Haywood, Madison, Swain	44 min
Jul 12, 2:45 PM EDT	Heat Advisory	GSP	Cabarrus, Mecklenburg, Union	30 hr
Jul 12, 7:37 AM EDT	Special Weather Statement	GSP	Stephens	38 min
Jul 12, 8:27 AM EDT	Special Weather Statement	GSP	Habersham	48 min
Jul 12, 9:04 AM EDT	Special Weather Statement	GSP	Banks	41 min

Nearby

Special Weather Statements in North Carolina, 2011 Every special weather statement in 2011

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.