Alert archive / North Carolina / Special Weather Statements in 2012

Special Weather Statement, NWS Greenville-Spartanburg, SC

May 5, 2012Graham County, Swain County, North Carolina

NWS Greenville-Spartanburg, SC issued this special weather statement at May 5, 2012, 7:19 AM EDT for Graham County, Swain County, North Carolina. It was in force for 56 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
May 5, 2012, 7:19 AM EDT (11:19 UTC)
Expired
May 5, 2012, 8:15 AM EDT
In force
56 min
Issued by
NWS Greenville-Spartanburg, SC

Counties Graham County, NC, Swain County, NC

The radar

The Knoxville radar (KMRX), 82 km from the middle of the area, began a volume at 11:23 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

Nashville Metro, TN (KBNA), launched 00:00Z, 11.3 hours before the alert went out and 277 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-pSkew-T log-p diagram, Nashville Metro, TN at 00:00Z on 2012-05-05Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1078 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Nashville Metro, TN at 00:00Z on 2012-05-05The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 2 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
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
1078 J/kg
Mixed-layer CIN
-70 J/kg
Mixed-layer LCL
1542 m above ground
0-6 km bulk shear
37 kt
0-1 km storm-relative helicity
2 m²/s²
0-3 km storm-relative helicity
111 m²/s²
Significant tornado parameter
0.1
Supercell composite
1.6

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 May 5, 5:09 AM EDT, 2 hours 10 minutes earlier.

Area forecast discussion, May 5, 5:09 AM EDT, 2 hours 10 minutes before
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Hazardous weather outlook, May 5, 6:22 AM EDT, 57 minutes before
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In the hours before

Special weather statement, May 5, 7:19 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.

IssuedProductOfficeCountiesLasted
May 5, 8:04 AM EDTSpecial Weather StatementGSPGraham, Swain56 min
May 5, 8:11 AM EDTSpecial Weather StatementGSPHaywood, Madison64 min
May 5, 8:50 AM EDTSpecial Weather StatementGSPBuncombe, Haywood, Henderson, Jackson, Mitchell, Transylvania and 1 more55 min
May 5, 9:28 AM EDTSpecial Weather StatementGSPAvery, Buncombe, Burke, Henderson, McDowell, Mitchell and 2 more62 min

Nearby

Special Weather Statements in North Carolina, 2012Every special weather statement in 2012

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.