Alert archive / North Carolina / Lake Wind Advisories in 2012

Lake Wind Advisory 1, NWS Greenville-Spartanburg, SC

January 1, 201227 counties in North Carolina; Habersham County, Rabun County, Georgia

NWS Greenville-Spartanburg, SC issued this lake wind advisory at Jan 1, 2012, 10:36 AM EST for 27 counties in North Carolina; Habersham County, Rabun County, Georgia. It took effect at Jan 1, 2012, 1:00 PM EST. It was in force for 53 hr.

The area

The counties it named.

The facts

Issued: Jan 1, 2012, 10:36 AM EST (15:36 UTC)
In effect from: Jan 1, 2012, 1:00 PM EST
Expired: Jan 3, 2012, 6:00 PM EST
In force: 53 hr
Issued by: NWS Greenville-Spartanburg, SC

All 29 counties

Habersham County, GA, Rabun County, GA, Alexander County, NC, Avery County, NC, Buncombe County, NC, Burke County, NC, Cabarrus County, NC, Caldwell County, NC, Catawba County, NC, Davie County, NC, Gaston County, NC, Graham County, NC, Haywood County, NC, Henderson County, NC, Iredell County, NC, Jackson County, NC, Lincoln County, NC, Macon County, NC, Madison County, NC, McDowell County, NC, Mecklenburg County, NC, Mitchell County, NC, Polk County, NC, Rowan County, NC, Rutherford County, NC, Swain County, NC, Transylvania County, NC, Union County, NC, Yancey County, NC

The radar

The Greer radar (KGSP), 72 km from the middle of the area, began a volume at 15:39 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, 3.6 hours before the alert went out and 202 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 1702 m above ground
0-6 km bulk shear: 38 kt
0-1 km storm-relative helicity: 166 m²/s²
0-3 km storm-relative helicity: 162 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this lake wind advisory 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 lake wind advisory went out at Jan 1, 10:29 AM EST, 7 minutes earlier.

Area forecast discussion, Jan 1, 10:29 AM EST, 7 minutes before

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Hazardous weather outlook, Jan 1, 5:45 AM EST, 4 hours 51 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
Jan 1, 2:44 PM EST	Wind Advisory	GSP	Avery, Burke, Caldwell, McDowell, Mitchell, Yancey	15 hr
Jan 1, 3:30 PM EST	Wind Chill Advisory	GSP	Avery, Buncombe, Graham, Haywood, Jackson, Macon and 5 more	45 hr
Jan 1, 3:30 PM EST	Winter Weather Advisory	GSP	Avery, Buncombe, Burke, Caldwell, Graham, Haywood and 11 more	45 hr

Nearby

Lake Wind Advisories in North Carolina, 2012 Lake Wind Advisories in Georgia, 2012 Every lake wind advisory 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.