Alert archive / North Carolina / Winter Storm Warnings in 2019

Winter Storm Warning 3, NWS Greenville-Spartanburg, SC

February 18, 20196 counties in North Carolina

NWS Greenville-Spartanburg, SC issued this winter storm warning at Feb 18, 2019, 3:26 PM EST for 6 counties in North Carolina. It took effect at Feb 19, 2019, 3:00 PM EST. It was in force for 21 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
Feb 18, 2019, 3:26 PM EST (20:26 UTC)
In effect from
Feb 19, 2019, 3:00 PM EST
Expired
Feb 20, 2019, 12:00 PM EST
In force
21 hr
Issued by
NWS Greenville-Spartanburg, SC

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

The radar

The Greer radar (KGSP), 115 km from the middle of the area, began a volume at 20:26 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 12:00Z, 8.4 hours before the alert went out and 262 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 12:00Z on 2019-02-18Temperature 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, Roanoke, VA at 12:00Z on 2019-02-18The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -242 square meters per square second.1939587897117136Sfc1 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
597 m above ground
0-6 km bulk shear
116 kt
0-1 km storm-relative helicity
-242 m²/s²
0-3 km storm-relative helicity
-161 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
Feb 18, 3:45 AM ESTWinter Storm WatchGSPAvery, Burke, Caldwell, McDowell, Mitchell, Yancey12 hr
Feb 18, 3:26 PM ESTWinter Weather AdvisoryGSPAlexander, Buncombe, Burke, Caldwell, Catawba, Davie and 10 more44 hr

Nearby

Winter Storm Warnings in North Carolina, 2019Every winter storm warning in 2019

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.