Alert archive / Virginia / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 79, NWS Charleston, WV

June 30, 2012Buchanan County, Virginia; McDowell County, West Virginia

NWS Charleston, WV issued this severe thunderstorm warning at Jun 30, 2012, 5:55 PM EDT for Buchanan County, Virginia; McDowell County, West Virginia. It was in force for 35 min. 5 reports 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
Jun 30, 2012, 5:55 PM EDT (21:55 UTC)
Expired
Jun 30, 2012, 6:30 PM EDT
In force
35 min
Issued by
NWS Charleston, WV
Area
Storm-based polygon

Counties Buchanan County, VA, McDowell County, WV

The radar

The Charleston,WV radar (KRLX), 97 km from the middle of the area, began a volume at 21:54 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

TimeReportWhereRemark
Jun 30, 6:00 PM EDTHAIL 0.7Hurley, VA
Jun 30, 6:05 PM EDTHAIL 1Hurley, VA
Jun 30, 6:07 PM EDTHAIL 0.5Hurley, VAEVENT OCCURRED BETWEEN 06:10 PM 06/30/2012
Jun 30, 6:15 PM EDTHAIL 0.7Hurley, VA
Jun 30, 6:35 PM EDTHAIL 1Hurley, VA

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, 9.9 hours before the alert went out and 222 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 2012-06-30Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 656 joules per kilogram.LCLLFCEL10008507005003002001001 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 2012-06-30The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -1 square meters per square second.193958Sfc1 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
656 J/kg
Mixed-layer CIN
-356 J/kg
Mixed-layer LCL
1666 m above ground
0-6 km bulk shear
25 kt
0-1 km storm-relative helicity
-1 m²/s²
0-3 km storm-relative helicity
47 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

128 
WUUS51 KRLX 302155
SVRRLX
VAC027-WVC047-302230-
/O.NEW.KRLX.SV.W.0079.120630T2155Z-120630T2230Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE CHARLESTON WV
555 PM EDT SAT JUN 30 2012

THE NATIONAL WEATHER SERVICE IN CHARLESTON HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHERN BUCHANAN COUNTY IN VIRGINIA...
  NORTHWESTERN MCDOWELL COUNTY IN WEST VIRGINIA...

* UNTIL 630 PM EDT

* AT 554 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND
  DAMAGING WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS LOCATED NEAR
  BIG ROCK...OR 9 MILES NORTHWEST OF GRUNDY...AND MOVING EAST AT 25
  MPH.

* OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
  ROSEANN...HURLEY AND PANTHER..

.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

VERY HEAVY RAIN WILL ALSO FALL FROM THIS SEVERE THUNDERSTORM...AND
WILL CAUSE WATER TO POND ON ROADS AND QUICKLY FILL ROADSIDE DITCHES
AND SMALL STREAMS.

PLEASE REPORT HAIL OR STRONG WINDS TO THE NATIONAL WEATHER SERVICE BY
CALLING TOLL FREE...877-633-6772...WHEN YOU CAN DO SO SAFELY.

&&

LAT...LON 3733 8226 3734 8226 3752 8201 3753 8195
      3751 8194 3751 8193 3753 8191 3752 8190
      3755 8184 3754 8183 3732 8183
TIME...MOT...LOC 2155Z 269DEG 22KT 3739 8216

$$

28
1 follow-up statement
067 
WWUS51 KRLX 302216
SVSRLX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE CHARLESTON WV
616 PM EDT SAT JUN 30 2012

VAC027-WVC047-302230-
/O.CON.KRLX.SV.W.0079.000000T0000Z-120630T2230Z/
BUCHANAN VA-MCDOWELL WV-
616 PM EDT SAT JUN 30 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 630 PM EDT
FOR NORTHWESTERN MCDOWELL AND NORTHERN BUCHANAN COUNTIES...

AT 612 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE
HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS
LOCATED NEAR HURLEY...OR 9 MILES NORTHEAST OF GRUNDY...MOVING EAST AT
25 MPH.

OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO PANTHER

PRECAUTIONARY/PREPAREDNESS ACTIONS...

VERY HEAVY RAIN WILL ALSO FALL FROM THIS SEVERE THUNDERSTORM...AND
WILL CAUSE WATER TO POND ON ROADS AND QUICKLY FILL ROADSIDE DITCHES
AND SMALL STREAMS.

&&

PLEASE REPORT HAIL OR STRONG WINDS TO THE NATIONAL WEATHER SERVICE BY
CALLING TOLL FREE...877-633-6772...WHEN YOU CAN DO SO SAFELY.

LAT...LON 3733 8226 3734 8226 3752 8201 3753 8195
      3751 8194 3751 8193 3752 8191 3752 8183
      3732 8183
TIME...MOT...LOC 2216Z 269DEG 22KT 3739 8200

$$

28

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 29, 8:07 PM EDTSpecial Weather StatementRLXBuchanan, Dickenson68 min
Jun 29, 8:17 PM EDTSevere Thunderstorm WarningRLXBuchanan, Dickenson58 min
Jun 30, 5:13 PM EDTSpecial Weather StatementRLXBuchanan, Dickenson47 min
Jun 30, 6:28 PM EDTSevere Thunderstorm WarningRLXBuchanan47 min
Jun 30, 7:02 PM EDTAreal Flood AdvisoryRLXBuchanan118 min
Jun 30, 7:07 PM EDTSevere Thunderstorm WarningRLXBuchanan38 min
Jun 30, 7:27 PM EDTSevere Thunderstorm WarningRLXBuchanan33 min
Jun 29, 8:28 PM EDTSevere Thunderstorm WarningRLXPocahontas32 min
Jun 30, 3:18 PM EDTHeat AdvisoryRLXBoone, Cabell, Kanawha, Lincoln, Logan, Mason and 3 more27 hr
Jun 30, 7:00 PM EDTSevere Thunderstorm WarningRLXMcDowell, Raleigh, Wyoming36 min

Nearby

Severe Thunderstorm Warnings in Virginia, 2012Severe Thunderstorm Warnings in West Virginia, 2012Every severe thunderstorm warning in 2012

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.