Alert archive / North Carolina / Freeze Watches in 2012

Freeze Watch 2, NWS Greenville-Spartanburg, SC

April 10, 201228 counties in North Carolina; 5 counties in South Carolina; Habersham County, Rabun County, Georgia

NWS Greenville-Spartanburg, SC issued this freeze watch at Apr 10, 2012, 3:11 PM EDT for 28 counties in North Carolina; 5 counties in South Carolina; Habersham County, Rabun County, Georgia. It took effect at Apr 12, 2012, 12:00 AM EDT. It was in force for .

The area

The counties it named.

The facts

Issued: Apr 10, 2012, 3:11 PM EDT (19:11 UTC)
In effect from: Apr 12, 2012, 12:00 AM EDT
Expired: Apr 11, 2012, 11:06 AM EDT
In force
Issued by: NWS Greenville-Spartanburg, SC

All 35 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, 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, Cherokee County, SC, Chester County, SC, Laurens County, SC, Union County, SC, York County, SC

The radar

The Greer radar (KGSP), 63 km from the middle of the area, began a volume at 19:12 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

Peachtre/Fal Fld, GA (KFFC), launched 12:00Z, 7.2 hours before the alert went out and 326 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: 2171 m above ground
0-6 km bulk shear: 36 kt
0-1 km storm-relative helicity: -64 m²/s²
0-3 km storm-relative helicity: 69 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 freeze watch 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 freeze watch went out at Apr 10, 2:50 PM EDT, 21 minutes earlier.

Area forecast discussion, Apr 10, 2:50 PM EDT, 21 minutes before

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Hazardous weather outlook, Apr 10, 11:14 AM EDT, 3 hours 57 minutes before

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In the hours before

Special weather statement, Apr 10, 1:41 PM EDT, 1 hour 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 10, 3:15 AM EDT	Red Flag Warning	GSP	Alexander, Avery, Buncombe, Burke, Cabarrus, Caldwell and 16 more	17 hr
Apr 10, 3:27 AM EDT	Freeze Warning	GSP	Avery, Buncombe, Burke, Caldwell, Graham, Haywood and 11 more	30 hr
Apr 10, 4:07 PM EDT	Special Weather Statement	GSP	Abbeville, Anderson, Greenwood	53 min
Apr 10, 4:32 PM EDT	Special Weather Statement	GSP	Chester, York	58 min
Apr 10, 5:05 PM EDT	Special Weather Statement	GSP	Abbeville, Greenwood	55 min
Apr 10, 3:51 PM EDT	Special Weather Statement	GSP	Elbert, Franklin, Hart	69 min

Nearby

Freeze Watches in North Carolina, 2012 Freeze Watches in South Carolina, 2012 Freeze Watches in Georgia, 2012 Every freeze watch 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.