Alert archive / West Virginia / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 19, NWS Charleston, WV

April 9, 2021Pocahontas County, West Virginia

NWS Charleston, WV issued this severe thunderstorm warning at Apr 9, 2021, 2:07 PM EDT for Pocahontas County, West Virginia. It was in force for 18 min. 1 report came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued: Apr 9, 2021, 2:07 PM EDT (18:07 UTC)
Expired: Apr 9, 2021, 2:25 PM EDT
In force: 18 min
Issued by: NWS Charleston, WV
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

County Pocahontas County, WV

The radar

The Roanoke radar (KFCX), 145 km from the middle of the area, began a volume at 18:05 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.

What was reported inside it

Time	Report	Where	Remark
Apr 9, 2:08 PM EDT	HAIL 1	1 S Minnehaha Springs, WV	SOCIAL MEDIA REPORT OF QUARTER SIZE HAIL. ALSO A LOT OF SMALL HAIL

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Roanoke, VA (KRNK), launched 12:00Z, 6.1 hours before the alert went out and 123 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 132 J/kg
Mixed-layer CIN: -77 J/kg
Mixed-layer LCL: 654 m above ground
0-6 km bulk shear: 47 kt
0-1 km storm-relative helicity: 182 m²/s²
0-3 km storm-relative helicity: 199 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.2

Open this sounding in Storm Lab

The text

As transmitted.

476 
WUUS51 KRLX 091807
SVRRLX
WVC075-091845-
/O.NEW.KRLX.SV.W.0019.210409T1807Z-210409T1845Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Charleston WV
207 PM EDT Fri Apr 9 2021

The National Weather Service in Charleston West Virginia has issued a

* Severe Thunderstorm Warning for...
  Southeastern Pocahontas County in northeastern West Virginia...

* Until 245 PM EDT.

* At 207 PM EDT, a severe thunderstorm was located 9 miles northwest
  of Burnsville, or 11 miles south of Greenbank, moving northeast at
  30 mph.

  HAZARD...60 mph wind gusts and quarter size hail.

  SOURCE...Radar indicated.

  IMPACT...Hail damage to vehicles is expected. Expect wind damage 
           to roofs, siding, and trees.

* Locations impacted include...
  Minnehaha Springs and Frost. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

Please report severe weather to the National Weather Service by
calling toll free, 800 401 9535, when you can do so safely.

You may also report severe weather by posting your report to the
Charleston West Virginia National Weather Service Facebook Page, or
by using the Twitter Hashtag, NWSRLX.

&&

LAT...LON 3838 7973 3836 7973 3835 7974 3836 7977
      3834 7977 3831 7981 3827 7979 3818 7992
      3816 7991 3812 7994 3810 8002 3817 8007
      3842 7970
TIME...MOT...LOC 1807Z 246DEG 26KT 3826 7981 

HAIL...1.00IN
WIND...60MPH
 
$$

08

1 follow-up statement

902 
WWUS51 KRLX 091825
SVSRLX

Severe Weather Statement
National Weather Service Charleston WV
225 PM EDT Fri Apr 9 2021

WVC075-091834-
/O.CAN.KRLX.SV.W.0019.000000T0000Z-210409T1845Z/
Pocahontas WV-
225 PM EDT Fri Apr 9 2021

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN POCAHONTAS COUNTY
IS CANCELLED...
        
The storm which prompted the warning has weakened below severe
limits, and has exited the warned area. Therefore, the warning has
been cancelled.

LAT...LON 3838 7973 3836 7973 3835 7974 3836 7977
      3834 7977 3831 7981 3827 7979 3818 7992
      3816 7991 3812 7994 3810 8002 3817 8007
      3842 7970
TIME...MOT...LOC 1817Z 246DEG 26KT 3831 7966 

$$

08

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 8, 10:20 PM EDT	Special Weather Statement	RLX	Wayne	25 min
Apr 8, 10:45 PM EDT	Special Weather Statement	RLX	Lincoln	30 min
Apr 9, 11:46 AM EDT	Severe Thunderstorm Warning	RLX	Randolph, Upshur	28 min
Apr 9, 1:48 PM EDT	Special Weather Statement	RLX	Pocahontas	42 min
Apr 9, 4:40 PM EDT	Special Weather Statement	RLX	Randolph	35 min

Nearby

Severe Thunderstorm Warnings in West Virginia, 2021 Every severe thunderstorm 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.