Alert archive / North Carolina / Winter Weather Advisories in 2016

Winter Weather Advisory 13, NWS Greenville-Spartanburg, SC

December 29, 20166 counties in North Carolina

NWS Greenville-Spartanburg, SC issued this winter weather advisory at Dec 29, 2016, 3:43 AM EST for 6 counties in North Carolina. It took effect at Dec 29, 2016, 7:00 PM EST. It was in force for 17 hr.

The area

The counties it named.

The facts

Issued
Dec 29, 2016, 3:43 AM EST (08:43 UTC)
In effect from
Dec 29, 2016, 7:00 PM EST
Expired
Dec 30, 2016, 12:00 PM EST
In force
17 hr
Issued by
NWS Greenville-Spartanburg, SC

Counties Avery County, NC, Haywood County, NC, Madison County, NC, Mitchell County, NC, Swain County, NC, Yancey County, NC

The radar

The Knoxville radar (KMRX), 82 km from the middle of the area, began a volume at 08:46 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 00:00Z, 8.7 hours before the alert went out and 323 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 00:00Z on 2016-12-29Temperature 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, Peachtre/Fal Fld, GA at 00:00Z on 2016-12-29The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 78 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1139 m above ground
0-6 km bulk shear
45 kt
0-1 km storm-relative helicity
78 m²/s²
0-3 km storm-relative helicity
112 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The office that day

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

IssuedProductOfficeCountiesLasted
Dec 28, 11:15 PM ESTSpecial Weather StatementGSPGraham, Swain60 min
Dec 28, 11:19 PM ESTSpecial Weather StatementGSPGraham, Swain56 min
Dec 29, 1:27 AM ESTSpecial Weather StatementGSPTransylvania48 min
Dec 29, 3:30 AM ESTSpecial Weather StatementGSPGaston45 min
Dec 29, 4:01 AM ESTSpecial Weather StatementGSPMecklenburg, Union44 min
Dec 29, 4:47 AM ESTSpecial Weather StatementGSPUnion43 min
Dec 29, 2:56 AM ESTSpecial Weather StatementGSPCherokee, Spartanburg49 min
Dec 29, 4:52 AM ESTSpecial Weather StatementGSPAbbeville, Greenwood38 min
Dec 29, 5:24 AM ESTSpecial Weather StatementGSPGreenwood51 min
Dec 29, 6:39 AM ESTSpecial Weather StatementGSPGreenwood51 min
Dec 29, 4:16 AM ESTSpecial Weather StatementGSPElbert, Hart44 min

Nearby

Winter Weather Advisories in North Carolina, 2016Every winter weather advisory in 2016

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.