Alert archive / West Virginia / Wind Chill Advisories in 2013

Wind Chill Advisory 1, NWS Charleston, WV

January 21, 20137 counties in West Virginia; Morgan County, Perry County, Washington County, Ohio

NWS Charleston, WV issued this wind chill advisory at Jan 21, 2013, 4:23 AM EST for 7 counties in West Virginia; Morgan County, Perry County, Washington County, Ohio. It took effect at Jan 21, 2013, 10:00 PM EST. It was in force for 36 hr.

The area

The counties it named.

The facts

Issued
Jan 21, 2013, 4:23 AM EST (09:23 UTC)
In effect from
Jan 21, 2013, 10:00 PM EST
Expired
Jan 23, 2013, 10:00 AM EST
In force
36 hr
Issued by
NWS Charleston, WV

Counties Morgan County, OH, Perry County, OH, Washington County, OH, Barbour County, WV, Doddridge County, WV, Harrison County, WV, Pleasants County, WV, Taylor County, WV, Tyler County, WV, Upshur County, WV

The radar

The Charleston,WV radar (KRLX), 136 km from the middle of the area, began a volume at 09:27 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

Pittsburgh, PA (KPIT), launched 00:00Z, 9.4 hours before the alert went out and 136 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, Pittsburgh, PA at 00:00Z on 2013-01-21Temperature 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, Pittsburgh, PA at 00:00Z on 2013-01-21The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 173 square meters per square second.1939587897117136156Sfc1 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
1100 m above ground
0-6 km bulk shear
103 kt
0-1 km storm-relative helicity
173 m²/s²
0-3 km storm-relative helicity
204 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 wind chill advisory went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Charleston, WV wrote its last area forecast discussion before this wind chill advisory went out at Jan 21, 4:13 AM EST, 10 minutes earlier.

Area forecast discussion, Jan 21, 4:13 AM EST, 10 minutes before
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Hazardous weather outlook, Jan 21, 4:00 AM EST, 23 minutes before
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Nearby

Wind Chill Advisories in West Virginia, 2013Wind Chill Advisories in Ohio, 2013Every wind chill advisory 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.