Alert archive / West Virginia / Freeze Warnings in 2021

Freeze Warning 10, NWS Charleston, WV

May 7, 2021Pocahontas County, Randolph County, West Virginia

NWS Charleston, WV issued this freeze warning at May 7, 2021, 4:10 AM EDT for Pocahontas County, Randolph County, West Virginia. It took effect at May 8, 2021, 4:00 AM EDT. It was in force for 6 hr. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
May 7, 2021, 4:10 AM EDT (08:10 UTC)
In effect from
May 8, 2021, 4:00 AM EDT
Expired
May 8, 2021, 10:14 AM EDT
In force
6 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 08:10 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 00:00Z, 8.2 hours before the alert went out and 155 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 00:00Z on 2021-05-07Temperature 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 00:00Z on 2021-05-07The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 18 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
2193 m above ground
0-6 km bulk shear
31 kt
0-1 km storm-relative helicity
18 m²/s²
0-3 km storm-relative helicity
18 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

133 
WWUS71 KRLX 070810
NPWRLX

URGENT - WEATHER MESSAGE
National Weather Service Charleston WV
410 AM EDT Fri May 7 2021

WVZ523-526-071615-
/O.UPG.KRLX.FZ.A.0005.210508T0400Z-210508T1300Z/
/O.NEW.KRLX.FZ.W.0010.210508T0900Z-210508T1600Z/
Northwest Pocahontas-Southeast Randolph-
Including the cities of Snowshoe and Harman
410 AM EDT Fri May 7 2021

...FREEZE WARNING IN EFFECT FROM 5 AM TO NOON EDT SATURDAY...

* WHAT...Sub-freezing temperatures as low as the lower 30s.
  Temperatures will be slow to rise above freezing on Saturday 
  morning. 

* WHERE...Northwest Pocahontas and Southeast Randolph Counties.

* WHEN...From 5 AM to noon EDT Saturday.

* IMPACTS...Frost and freeze conditions will kill crops, other
  sensitive vegetation and possibly damage unprotected outdoor
  plumbing.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Take steps now to protect tender plants from the cold. To prevent
freezing and possible bursting of outdoor water pipes they should
be wrapped, drained, or allowed to drip slowly. Those that have
in-ground sprinkler systems should drain them and cover above-
ground pipes to protect them from freezing.

&&

$$
5 follow-up statements
397 
WWUS71 KRLX 071552
NPWRLX

URGENT - WEATHER MESSAGE
National Weather Service Charleston WV
1152 AM EDT Fri May 7 2021

WVZ523-526-080300-
/O.CON.KRLX.FZ.W.0010.210508T0900Z-210508T1600Z/
Northwest Pocahontas-Southeast Randolph-
Including the cities of Snowshoe and Harman
1152 AM EDT Fri May 7 2021

...FREEZE WARNING REMAINS IN EFFECT FROM 5 AM TO NOON EDT
SATURDAY...

* WHAT...Sub-freezing temperatures as low as 29 expected.

* WHERE...Southeast Randolph and Northwest Pocahontas Counties.

* WHEN...From 5 AM to noon EDT Saturday.

* IMPACTS...Frost and freeze conditions will damage crops and 
  other sensitive vegetation.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Take steps now to protect tender plants from the cold. 

&&

$$
105 
WWUS71 KRLX 071805
NPWRLX

URGENT - WEATHER MESSAGE
National Weather Service Charleston WV
205 PM EDT Fri May 7 2021

WVZ523-526-080300-
/O.EXT.KRLX.FZ.W.0010.210508T0800Z-210508T1700Z/
Northwest Pocahontas-Southeast Randolph-
Including the cities of Snowshoe and Harman
205 PM EDT Fri May 7 2021

...FREEZE WARNING NOW IN EFFECT FROM 4 AM TO 1 PM EDT SATURDAY...

* WHAT...Sub-freezing temperatures as low as 29 expected.

* WHERE...Southeast Randolph and Northwest Pocahontas Counties.

* WHEN...From 4 AM to 1 PM EDT Saturday.

* IMPACTS...Frost and freeze conditions will damage crops and
  other sensitive vegetation.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Take steps now to protect tender plants from the cold. 

&&

$$
457 
WWUS71 KRLX 080044
NPWRLX

URGENT - WEATHER MESSAGE
National Weather Service Charleston WV
844 PM EDT Fri May 7 2021

WVZ523-526-081000-
/O.CON.KRLX.FZ.W.0010.210508T0800Z-210508T1700Z/
Northwest Pocahontas-Southeast Randolph-
Including the cities of Snowshoe and Harman
844 PM EDT Fri May 7 2021

...FREEZE WARNING REMAINS IN EFFECT FROM 4 AM TO 1 PM EDT
SATURDAY...

* WHAT...Sub-freezing temperatures as low as the upper 20s 
  expected.

* WHERE...Southeast Randolph and Northwest Pocahontas Counties.

* WHEN...From 4 AM to 1 PM EDT Saturday.

* IMPACTS...Frost and freeze conditions will damage crops and 
  other sensitive vegetation.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Take steps now to protect tender plants from the cold.To prevent
freezing and possible bursting of outdoor water pipes they should
be wrapped, drained, or allowed to drip slowly. Those that have
in-ground sprinkler systems should drain them and cover above-
ground pipes to protect them from freezing.

&&

$$
526 
WWUS71 KRLX 080855
NPWRLX

URGENT - WEATHER MESSAGE
National Weather Service Charleston WV
455 AM EDT Sat May 8 2021

WVZ523-526-081700-
/O.CON.KRLX.FZ.W.0010.000000T0000Z-210508T1700Z/
Northwest Pocahontas-Southeast Randolph-
Including the cities of Snowshoe and Harman
455 AM EDT Sat May 8 2021

...FREEZE WARNING REMAINS IN EFFECT UNTIL 1 PM EDT THIS
AFTERNOON...

* WHAT...Sub-freezing temperatures as low as the upper 20s 
  expected.

* WHERE...Southeast Randolph and Northwest Pocahontas Counties.

* WHEN...Until 1 PM EDT this afternoon.

* IMPACTS...Frost and freeze conditions will kill crops, other 
  sensitive vegetation and possibly damage unprotected outdoor 
  plumbing.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Take steps now to protect tender plants from the cold. To prevent
freezing and possible bursting of outdoor water pipes they should
be wrapped, drained, or allowed to drip slowly. Those that have
in-ground sprinkler systems should drain them and cover above-
ground pipes to protect them from freezing.

&&

$$
055 
WWUS71 KRLX 081414
NPWRLX

URGENT - WEATHER MESSAGE
National Weather Service Charleston WV
1014 AM EDT Sat May 8 2021

WVZ523-526-081515-
/O.CAN.KRLX.FZ.W.0010.000000T0000Z-210508T1700Z/
Northwest Pocahontas-Southeast Randolph-
Including the cities of Snowshoe and Harman
1014 AM EDT Sat May 8 2021

...FREEZE WARNING IS CANCELLED...

Temperatures have climbed above freezing this morning.

$$

Nearby

Freeze Warnings in West Virginia, 2021Every freeze 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.