Alert archive / West Virginia / Wind Chill Advisories in 2021

Wind Chill Advisory 4, NWS Blacksburg, VA

February 19, 2021Greenbrier County, West Virginia

NWS Blacksburg, VA issued this wind chill advisory at Feb 19, 2021, 1:47 PM EST for Greenbrier County, West Virginia. It took effect at Feb 20, 2021, 12:00 AM EST. It was in force for 10 hr.

The area

The counties it named.

The facts

Issued
Feb 19, 2021, 1:47 PM EST (18:47 UTC)
In effect from
Feb 20, 2021, 12:00 AM EST
Expired
Feb 20, 2021, 10:00 AM EST
In force
10 hr
Issued by
NWS Blacksburg, VA

County Greenbrier County, WV

The radar

The Roanoke radar (KFCX), 104 km from the middle of the area, began a volume at 18:45 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 12:00Z, 6.8 hours before the alert went out and 118 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 12:00Z on 2021-02-19Temperature 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, Roanoke, VA at 12:00Z on 2021-02-19The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -245 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
635 m above ground
0-6 km bulk shear
110 kt
0-1 km storm-relative helicity
-245 m²/s²
0-3 km storm-relative helicity
-101 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

852 
WWUS41 KRNK 191847
WSWRNK

URGENT - WINTER WEATHER MESSAGE
National Weather Service Blacksburg VA
147 PM EST Fri Feb 19 2021


WVZ508-200300-
/O.NEW.KRNK.WC.Y.0004.210220T0500Z-210220T1500Z/
Western Greenbrier-
Including the cities of Quinwood, Duo, and Rainelle
147 PM EST Fri Feb 19 2021

...WIND CHILL ADVISORY IN EFFECT FROM MIDNIGHT TONIGHT TO 10 AM
EST SATURDAY...

* WHAT...Very cold wind chills expected. Wind chills as low as 
  10 below zero.

* WHERE...Western Greenbrier County.

* WHEN...From midnight tonight to 10 AM EST Saturday.

* IMPACTS...The cold wind chills could result in hypothermia if 
  precautions are not taken.


PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Wind Chill Advisory is issued when strong winds will combine
with cold temperatures for several hours to create dangerously
cold conditions for exposed skin. 

Use caution while outside. Wear appropriate clothing, a hat, and
gloves. 

&&

$$
3 follow-up statements
810 
WWUS41 KRNK 200203
WSWRNK

URGENT - WINTER WEATHER MESSAGE
National Weather Service Blacksburg VA
903 PM EST Fri Feb 19 2021


WVZ508-201015-
/O.CON.KRNK.WC.Y.0004.210220T0500Z-210220T1500Z/
Western Greenbrier-
Including the cities of Quinwood, Duo, and Rainelle
903 PM EST Fri Feb 19 2021

...WIND CHILL ADVISORY REMAINS IN EFFECT UNTIL 10 AM EST
SATURDAY...

* WHAT...Very cold wind chills expected. Wind chills as low as 
  10 below zero.

* WHERE...Western Greenbrier County.

* WHEN...overnight until 10 AM EST Saturday.

* IMPACTS...The cold wind chills could result in hypothermia if 
  precautions are not taken.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Wind Chill Advisory is issued when strong winds will combine
with cold temperatures for several hours to create dangerously
cold conditions for exposed skin.

Use caution while outside. Wear appropriate clothing, a hat, and
gloves.

&&

$$

07
025 
WWUS41 KRNK 201006
WSWRNK

URGENT - WINTER WEATHER MESSAGE
National Weather Service Blacksburg VA
506 AM EST Sat Feb 20 2021

...Cold Wind Chill This Morning...

WVZ508-201400-
/O.CON.KRNK.WC.Y.0004.000000T0000Z-210220T1500Z/
Western Greenbrier-
Including the cities of Quinwood, Duo, and Rainelle
506 AM EST Sat Feb 20 2021

...WIND CHILL ADVISORY REMAINS IN EFFECT UNTIL 10 AM EST THIS
MORNING...

* WHAT...Very cold wind chills expected. Wind chills as low as 
  10 below zero.

* WHERE...Western Greenbrier County.

* WHEN...Until 10 AM EST today.

* IMPACTS...The cold wind chills could result in hypothermia if 
  precautions are not taken.

* ADDITIONAL DETAILS...Scattered snow showers will continue this
  morning with less than one inch additional accumulation.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Wind Chill Advisory is issued when strong winds will combine
with cold temperatures for several hours to create dangerously
cold conditions for exposed skin. 

Use caution while outside. Wear appropriate clothing, a hat, and
gloves. 

&&

$$
923 
WWUS41 KRNK 201525
WSWRNK

URGENT - WINTER WEATHER MESSAGE
National Weather Service Blacksburg VA
1025 AM EST Sat Feb 20 2021


WVZ508-201630-
/O.EXP.KRNK.WC.Y.0004.000000T0000Z-210220T1500Z/
Western Greenbrier-
1025 AM EST Sat Feb 20 2021

...WIND CHILL ADVISORY HAS EXPIRED...

Temperatures will gradually increase to the low to mid 20s today.

$$

Nearby

Wind Chill Advisories in West Virginia, 2021Every wind chill 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.