Alert archive / North Carolina / Ice Storm Warnings in 2013

Ice Storm Warning 2, NWS Greenville-Spartanburg, SC

November 25, 201310 counties in North Carolina

NWS Greenville-Spartanburg, SC issued this ice storm warning at Nov 25, 2013, 12:17 PM EST for 10 counties in North Carolina. It took effect at Nov 26, 2013, 12:00 AM EST. 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
Nov 25, 2013, 12:17 PM EST (17:17 UTC)
In effect from
Nov 26, 2013, 12:00 AM EST
Expired
Nov 26, 2013, 10:23 AM EST
In force
10 hr
Issued by
NWS Greenville-Spartanburg, SC

Counties Avery County, NC, Buncombe County, NC, Burke County, NC, Caldwell County, NC, Henderson County, NC, McDowell County, NC, Mitchell County, NC, Polk County, NC, Rutherford County, NC, Yancey County, NC

The radar

The Greer radar (KGSP), 92 km from the middle of the area, began a volume at 17:20 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, 5.3 hours before the alert went out and 341 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, Peachtre/Fal Fld, GA at 12:00Z on 2013-11-25Temperature 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, Peachtre/Fal Fld, GA at 12:00Z on 2013-11-25The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 121 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
2734 m above ground
0-6 km bulk shear
39 kt
0-1 km storm-relative helicity
121 m²/s²
0-3 km storm-relative helicity
238 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 ice storm 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 ice storm warning went out at Nov 25, 9:35 AM EST, 2 hours 42 minutes earlier.

Area forecast discussion, Nov 25, 9:35 AM EST, 2 hours 42 minutes before
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Hazardous weather outlook, Nov 25, 7:00 AM EST, 5 hours 17 minutes before
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      <h1 id="headline">This service is currently unavailable.</h1>
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        The site you requested is temporarily down for maintenance or an unexpected outage.
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The office that day

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

IssuedProductOfficeCountiesLasted
Nov 25, 4:27 AM ESTFreezing Rain AdvisoryGSPAlexander, Avery, Buncombe, Burke, Cabarrus, Caldwell and 18 more29 hr

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.