Alert archive / North Carolina / Freeze Warnings in 2007

Freeze Warning 9, NWS Greenville-Spartanburg, SC

October 29, 200721 counties in North Carolina; Cherokee County, South Carolina; Rabun County, Georgia

NWS Greenville-Spartanburg, SC issued this freeze warning at Oct 29, 2007, 3:31 AM EDT for 21 counties in North Carolina; Cherokee County, South Carolina; Rabun County, Georgia. It took effect at Oct 30, 2007, 12:00 AM EDT. It was in force for 10 hr. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Oct 29, 2007, 3:31 AM EDT (07:31 UTC)
In effect from
Oct 30, 2007, 12:00 AM EDT
Expired
Oct 30, 2007, 10:00 AM EDT
In force
10 hr
Issued by
NWS Greenville-Spartanburg, SC
All 23 counties

Rabun County, GA, Alexander County, NC, Buncombe County, NC, Burke County, NC, Cabarrus County, NC, Caldwell County, NC, Catawba County, NC, Cleveland County, NC, Davie 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, Rowan County, NC, Rutherford County, NC, Swain County, NC, Transylvania County, NC, Cherokee County, SC

The radar

The Greer radar (KGSP), 71 km from the middle of the area, began a volume at 07:30 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 00:00Z, 7.5 hours before the alert went out and 205 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, Greensboro/Hi Pt, NC at 00:00Z on 2007-10-29Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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, Greensboro/Hi Pt, NC at 00:00Z on 2007-10-29The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -99 square meters per square second.19395878Sfc1 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1520 m above ground
0-6 km bulk shear
48 kt
0-1 km storm-relative helicity
-99 m²/s²
0-3 km storm-relative helicity
-87 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 warning 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 warning went out at Oct 29, 2:54 AM EDT, 37 minutes earlier.

Area forecast discussion, Oct 29, 2:54 AM EDT, 37 minutes before
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The office that day

Everything else NWS Greenville-Spartanburg, SC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Oct 29, 3:31 AM EDTFrost AdvisoryGSPGaston, Mecklenburg, Polk, Union30 hr
Oct 29, 4:14 AM EDTFire Weather WatchGSPElbert, Franklin, Habersham, Hart, Rabun, Stephens21 hr

Nearby

Freeze Warnings in North Carolina, 2007Freeze Warnings in South Carolina, 2007Freeze Warnings in Georgia, 2007Every freeze warning in 2007

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.