Alert archive / North Carolina / Ice Storm Warnings in 2013

Ice Storm Warning 3, NWS Greenville-Spartanburg, SC

December 7, 20135 counties in North Carolina

NWS Greenville-Spartanburg, SC issued this ice storm warning at Dec 7, 2013, 3:40 AM EST for 5 counties in North Carolina. It took effect at Dec 8, 2013, 12:00 AM EST. It was in force for 20 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
Dec 7, 2013, 3:40 AM EST (08:40 UTC)
In effect from
Dec 8, 2013, 12:00 AM EST
Expired
Dec 8, 2013, 8:00 PM EST
In force
20 hr
Issued by
NWS Greenville-Spartanburg, SC

Counties Avery County, NC, Burke County, NC, Caldwell County, NC, McDowell County, NC, Mitchell County, NC

The radar

The Greer radar (KGSP), 117 km from the middle of the area, began a volume at 08:42 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, 8.7 hours before the alert went out and 257 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, Roanoke, VA at 00:00Z on 2013-12-07Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 35 joules per kilogram.LCLLFCEL10008507005003002001001 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, Roanoke, VA at 00:00Z on 2013-12-07The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 446 square meters per square second.1939587897117Sfc1 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
35 J/kg
Mixed-layer CIN
-5 J/kg
Mixed-layer LCL
750 m above ground
0-6 km bulk shear
75 kt
0-1 km storm-relative helicity
446 m²/s²
0-3 km storm-relative helicity
534 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.3

Open this sounding in Storm Lab

The office that day

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

IssuedProductOfficeCountiesLasted
Dec 7, 3:40 AM ESTFreezing Rain AdvisoryGSPAlexander, Buncombe, Burke, Caldwell, Catawba, Davie and 8 more40 hr
Dec 6, 11:23 PM ESTSpecial Weather StatementGSPAbbeville, Anderson, Laurens37 min
Dec 6, 11:24 PM ESTSpecial Weather StatementGSPAbbeville, Anderson, Laurens96 min

Nearby

Ice Storm Warnings in North Carolina, 2013Every ice storm warning in 2013

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.