Alert archive / West Virginia / Snow Advisories in 2007

Snow Advisory 5, NWS Charleston, WV

February 17, 20075 counties in West Virginia

NWS Charleston, WV issued this snow advisory at Feb 17, 2007, 4:19 AM EST for 5 counties in West Virginia. It took effect at Feb 17, 2007, 11:59 AM EST. It was in force for 36 hr.

The area

The counties it named.

The facts

Issued
Feb 17, 2007, 4:19 AM EST (09:19 UTC)
In effect from
Feb 17, 2007, 11:59 AM EST
Expired
Feb 19, 2007, 12:00 AM EST
In force
36 hr
Issued by
NWS Charleston, WV

Counties Barbour County, WV, McDowell County, WV, Taylor County, WV, Upshur County, WV, Wyoming County, WV

The radar

The Charleston,WV radar (KRLX), 91 km from the middle of the area, began a volume at 09:18 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

Greensboro/Hi Pt, NC (KGSO), launched 00:00Z, 9.3 hours before the alert went out and 275 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, Greensboro/Hi Pt, NC at 00:00Z on 2007-02-17Temperature 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, Greensboro/Hi Pt, NC at 00:00Z on 2007-02-17The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 64 square meters per square second.1939587897Sfc1 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
2682 m above ground
0-6 km bulk shear
31 kt
0-1 km storm-relative helicity
64 m²/s²
0-3 km storm-relative helicity
82 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 snow 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 snow advisory went out at Feb 16, 6:55 PM EST, 9 hours 24 minutes earlier.

Area forecast discussion, Feb 16, 6:55 PM EST, 9 hours 24 minutes before
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Hazardous weather outlook, Feb 16, 3:02 PM EST, 13 hours 17 minutes before
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Nearby

Snow Advisories in West Virginia, 2007Every snow advisory in 2007

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.