Alert archive / North Carolina / Lake Wind Advisories in 2011

Lake Wind Advisory 19, NWS Greenville-Spartanburg, SC

April 15, 201128 counties in North Carolina; 8 counties in South Carolina; 6 counties in Georgia

NWS Greenville-Spartanburg, SC issued this lake wind advisory at Apr 15, 2011, 4:10 AM EDT for 28 counties in North Carolina; 8 counties in South Carolina; 6 counties in Georgia. It took effect at Apr 15, 2011, 2:00 PM EDT. It was in force for 26 hr.

The area

The counties it named.

The facts

Issued: Apr 15, 2011, 4:10 AM EDT (08:10 UTC)
In effect from: Apr 15, 2011, 2:00 PM EDT
Expired: Apr 16, 2011, 3:52 PM EDT
In force: 26 hr
Issued by: NWS Greenville-Spartanburg, SC

All 42 counties

Elbert County, GA, Franklin County, GA, Habersham County, GA, Hart County, GA, Rabun County, GA, Stephens County, GA, Alexander County, NC, Avery County, NC, Buncombe County, NC, Burke County, NC, Cabarrus County, NC, Caldwell County, NC, Catawba County, NC, Cleveland 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, Abbeville County, SC, Anderson County, SC, Cherokee County, SC, Chester County, SC, Greenwood County, SC, Laurens County, SC, Union County, SC, York County, SC

The radar

The Greer radar (KGSP), 40 km from the middle of the area, began a volume at 08:12 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

Roanoke, VA (KRNK), launched 00:00Z, 8.2 hours before the alert went out and 319 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: 3272 m above ground
0-6 km bulk shear: 35 kt
0-1 km storm-relative helicity: 39 m²/s²
0-3 km storm-relative helicity: 149 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 Apr 15, 2:01 AM EDT, 2 hours 9 minutes earlier.

Area forecast discussion, Apr 15, 2:01 AM EDT, 2 hours 9 minutes before

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Hazardous weather outlook, Apr 14, 3:40 PM EDT, 12 hours 30 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
Apr 15, 3:30 PM EDT	Wind Advisory	GSP	Avery, Graham, Haywood, Madison, Mitchell, Swain and 1 more	17 hr
Apr 15, 6:21 PM EDT	Special Weather Statement	GSP	Macon	39 min
Apr 15, 6:25 PM EDT	Special Weather Statement	GSP	Macon	65 min
Apr 15, 6:42 PM EDT	Special Weather Statement	GSP	Macon	63 min
Apr 15, 7:02 PM EDT	Special Weather Statement	GSP	Macon	43 min

Nearby

Lake Wind Advisories in North Carolina, 2011 Lake Wind Advisories in South Carolina, 2011 Lake Wind Advisories in Georgia, 2011 Every lake wind advisory 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.