Alert archive / West Virginia / Winter Weather Advisories in 2021
Winter Weather Advisory 5, NWS Charleston, WV
NWS Charleston, WV issued this winter weather advisory at Jan 19, 2021, 2:50 AM EST for Pocahontas County, Randolph County, West Virginia. It took effect at Jan 20, 2021, 1:00 AM EST. It was in force for 12 hr.
The area
The counties it named.
The facts
- Issued
- Jan 19, 2021, 2:50 AM EST (07:50 UTC)
- In effect from
- Jan 20, 2021, 1:00 AM EST
- Expired
- Jan 20, 2021, 1:00 PM EST
- In force
- 12 hr
- Issued by
- NWS Charleston, WV
Counties Pocahontas County, WV, Randolph County, WV
The radar
The Charleston,WV radar (KRLX), 157 km from the middle of the area, began a volume at 07:52 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, 7.8 hours before the alert went out and 207 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.
- Mixed-layer CAPE
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 683 m above ground
- 0-6 km bulk shear
- 29 kt
- 0-1 km storm-relative helicity
- 92 m²/s²
- 0-3 km storm-relative helicity
- 124 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
What forecasters said that day
The local office's own words before this winter weather 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 winter weather advisory went out at Jan 18, 6:47 PM EST, 8 hours 3 minutes earlier.
Area forecast discussion, Jan 18, 6:47 PM EST, 8 hours 3 minutes before
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</html>Hazardous weather outlook, Jan 18, 3:21 PM EST, 11 hours 29 minutes before
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Winter Weather Advisories in West Virginia, 2021Every winter weather advisory in 2021
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.