Alert archive / South Carolina / Freeze Watches in 2011

Freeze Watch 2, NWS Wilmington, NC

October 29, 20116 counties in South Carolina; 4 counties in North Carolina

NWS Wilmington, NC issued this freeze watch at Oct 29, 2011, 4:21 AM EDT for 6 counties in South Carolina; 4 counties in North Carolina. It took effect at Oct 30, 2011, 3:00 AM EDT. It was in force for .

The area

The counties it named.

The facts

Issued: Oct 29, 2011, 4:21 AM EDT (08:21 UTC)
In effect from: Oct 30, 2011, 3:00 AM EDT
Expired: Oct 29, 2011, 12:52 PM EDT
In force
Issued by: NWS Wilmington, NC

Counties Bladen County, NC, Columbus County, NC, Pender County, NC, Robeson County, NC, Darlington County, SC, Dillon County, SC, Florence County, SC, Marion County, SC, Marlboro County, SC, Williamsburg County, SC

The radar

The Wilmington radar (KLTX), 79 km from the middle of the area, began a volume at 08:23 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

Charleston AFB, SC (KCHS), launched 00:00Z, 8.4 hours before the alert went out and 173 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: 1 J/kg
Mixed-layer CIN: -113 J/kg
Mixed-layer LCL: 643 m above ground
0-6 km bulk shear: 51 kt
0-1 km storm-relative helicity: 154 m²/s²
0-3 km storm-relative helicity: 278 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 Wilmington, NC wrote its last area forecast discussion before this freeze watch went out at Oct 29, 3:55 AM EDT, 26 minutes earlier.

Area forecast discussion, Oct 29, 3:55 AM EDT, 26 minutes before

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Hazardous weather outlook, Oct 29, 3:38 AM EDT, 43 minutes before

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The office that day

Everything else NWS Wilmington, NC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Oct 29, 3:45 AM EDT	Small Craft Advisory	ILM		32 hr
Oct 29, 12:52 PM EDT	Frost Advisory	ILM	Darlington, Dillon, Florence, Marion, Marlboro, Williamsburg	20 hr

Nearby

Freeze Watches in South Carolina, 2011 Freeze Watches in North Carolina, 2011 Every freeze watch 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.