Alert archive / West Virginia / Winter Weather Advisories in 2016

Winter Weather Advisory 9, NWS Charleston, WV

February 25, 2016McDowell County, Wyoming County, West Virginia

NWS Charleston, WV issued this winter weather advisory at Feb 25, 2016, 2:49 AM EST for McDowell County, Wyoming County, West Virginia. It was in force for 31 hr.

The area

The counties it named.

The facts

Issued
Feb 25, 2016, 2:49 AM EST (07:49 UTC)
Expired
Feb 26, 2016, 9:30 AM EST
In force
31 hr
Issued by
NWS Charleston, WV

Counties McDowell County, WV, Wyoming County, WV

The radar

The Charleston,WV radar (KRLX), 91 km from the middle of the area, began a volume at 07:51 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, 7.8 hours before the alert went out and 189 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 2016-02-25Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 17 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 2016-02-25The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 131 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
17 J/kg
Mixed-layer CIN
-33 J/kg
Mixed-layer LCL
1514 m above ground
0-6 km bulk shear
57 kt
0-1 km storm-relative helicity
131 m²/s²
0-3 km storm-relative helicity
67 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.1

Open this sounding in Storm Lab

The office that day

Everything else NWS Charleston, WV issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Feb 25, 5:26 PM ESTSpecial Weather StatementRLXFayette, Kanawha, Nicholas, Putnam94 min
Feb 25, 5:31 PM ESTSpecial Weather StatementRLXBraxton, Calhoun, Gilmer, Roane, Wirt59 min

Nearby

Winter Weather Advisories in West Virginia, 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.