Alert archive / West Virginia / Snow Squall Warnings in 2021

Snow Squall Warning 1, NWS Charleston, WV

January 16, 2021Kanawha County, West Virginia

NWS Charleston, WV issued this snow squall warning at Jan 16, 2021, 2:33 PM EST for Kanawha County, West Virginia. It was in force for 27 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
Jan 16, 2021, 2:33 PM EST (19:33 UTC)
Expired
Jan 16, 2021, 3:00 PM EST
In force
27 min
Issued by
NWS Charleston, WV
Area
Storm-based polygon

County Kanawha County, WV

The radar

The Charleston,WV radar (KRLX), 7 km from the middle of the area, began a volume at 19:33 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

Cncnati-Daytn, OH (KILN), launched 12:00Z, 7.6 hours before the alert went out and 224 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, Cncnati-Daytn, OH at 12:00Z on 2021-01-16Temperature 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°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Cncnati-Daytn, OH at 12:00Z on 2021-01-16The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 13 square meters per square second.1939Sfc1 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
589 m above ground
0-6 km bulk shear
12 kt
0-1 km storm-relative helicity
13 m²/s²
0-3 km storm-relative helicity
39 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

643 
WWUS51 KRLX 161933
SQWRLX

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Snow Squall Warning
National Weather Service Charleston WV
233 PM EST Sat Jan 16 2021

WVC039-162000-
/O.NEW.KRLX.SQ.W.0001.210116T1933Z-210116T2000Z/
Kanawha WV-
233 PM EST Sat Jan 16 2021

The National Weather Service in Charleston West Virginia has issued a

* Snow Squall Warning for...
  Central Kanawha County in ${area.parentRegion}...

* Until 300 PM EST.

* At 232 PM EST, a dangerous snow squall was located over Charleston,
  moving east at 30 mph.

  HAZARD...Extremely poor visibility in heavy snow and blowing snow. 
           Wind gusts up to 30 mph.

  SOURCE...Radar and webcams.

  IMPACT...Dangerous travel.

* This includes the following highways...
   Interstate 79 between mile markers 1 and 5.
   Interstate 77 in West Virginia between mile markers 96 and 106.
   Interstate 64 in West Virginia between mile markers 51 and 57.
   West Virginia Turnpike between mile markers 91 and 95.
   Route 119 between mile markers 71 and 80.

Locations impacted include...
Charleston, Jefferson, South Charleston, Dunbar, Pinch, Coal Fork and
Elkview.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Reduce your speed and turn on headlights! During snow squalls, the
visibility may suddenly drop to near zero in whiteout conditions.

&&

LAT...LON 3828 8181 3830 8181 3842 8174 3842 8131
      3824 8137
TIME...MOT...LOC 1932Z 275DEG 28KT 3833 8165 

$$

30

The office that day

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

IssuedProductOfficeCountiesLasted
Jan 16, 2:29 AM ESTWinter Weather AdvisoryRLXNicholas, Pocahontas, Randolph, Webster31 hr
Jan 16, 4:36 PM ESTSnow Squall WarningRLXClay, Fayette, Kanawha, Nicholas24 min
Jan 16, 4:42 PM ESTSnow Squall WarningRLXBraxton, Calhoun, Clay, Gilmer, Kanawha, Roane33 min
Jan 16, 5:44 PM ESTSnow Squall WarningRLXBraxton, Clay, Gilmer, Lewis, Nicholas, Upshur and 1 more31 min

Nearby

Snow Squall Warnings in West Virginia, 2021Every snow squall warning 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.