Alert archive / West Virginia / Special Weather Statements in 2012

Special Weather Statement, NWS Charleston, WV

May 27, 2012Clay County, West Virginia

NWS Charleston, WV issued this special weather statement at May 27, 2012, 6:21 PM EDT for Clay County, West Virginia. It was in force for 39 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
May 27, 2012, 6:21 PM EDT (22:21 UTC)
Expired
May 27, 2012, 7:00 PM EDT
In force
39 min
Issued by
NWS Charleston, WV

County Clay County, WV

The radar

The Charleston,WV radar (KRLX), 46 km from the middle of the area, began a volume at 22:23 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, 10.4 hours before the alert went out and 191 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 2012-05-27Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 354 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 2012-05-27The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -42 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
354 J/kg
Mixed-layer CIN
-85 J/kg
Mixed-layer LCL
639 m above ground
0-6 km bulk shear
11 kt
0-1 km storm-relative helicity
-42 m²/s²
0-3 km storm-relative helicity
-9 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.

127 
WWUS81 KRLX 272221
SPSRLX

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE CHARLESTON WV
621 PM EDT SUN MAY 27 2012

WVZ015-027-036-037-272300-
CLAY WV-FAYETTE WV-KANAWHA WV-NICHOLAS WV-
621 PM EDT SUN MAY 27 2012

...STRONG THUNDERSTORMS WILL AFFECT NORTHWESTERN FAYETTE...
SOUTHEASTERN KANAWHA...SOUTHWESTERN CLAY AND WEST CENTRAL NICHOLAS
COUNTIES...

AT 619 PM EDT...STRONG THUNDERSTORMS WERE NEARLY STATIONARY ALONG A 
LINE FROM 9 MILES SOUTH OF CLAY TO 14 MILES SOUTHWEST OF CLAY TO 15 
MILES NORTHWEST OF FAYETTEVILLE.

WIND GUSTS TO 40 MPH AND SMALL HAIL ARE POSSIBLE WITH THESE STORMS. 
VERY HEAVY RAIN...UP TO A INCH PER HOUR...WILL FALL FROM THESE 
STORMS...AND WILL CAUSE WATER TO POND ON ROADS AND QUICKLY FILL 
ROADSIDE DITCHES AND SMALL STREAMS. EXPECT INTENSE LIGHTNING FROM 
THESE STORMS. DO NOT STAY IN THE OPEN NOR SEEK SHELTER UNDER TREES 
WHEN LIGHTNING THREATENS...MOVE INDOORS WHEN A THUNDERSTORM 
APPROACHES. 

THESE STORMS WILL BE NEAR INDORE AROUND 700 PM.

THIS WILL IMPACT THE FOLLOWING INTERSTATE...THE WEST VIRGINIA
TURNPIKE BETWEEN MILE MARKERS 69 AND 75.

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

LAT...LON 3826 8097 3805 8138 3832 8150 3847 8115

$$

12

The office that day

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

IssuedProductOfficeCountiesLasted
May 27, 2:49 PM EDTSpecial Weather StatementRLXWebster26 min
May 27, 3:00 PM EDTSpecial Weather StatementRLXRandolph30 min
May 27, 3:14 PM EDTSpecial Weather StatementRLXNicholas, Pocahontas, Webster31 min
May 27, 3:50 PM EDTSpecial Weather StatementRLXPocahontas, Randolph, Webster25 min
May 27, 4:13 PM EDTSevere Thunderstorm WarningRLXPocahontas, Randolph32 min
May 27, 4:45 PM EDTSevere Thunderstorm WarningRLXNicholas, Webster30 min
May 27, 5:29 PM EDTSpecial Weather StatementRLXNicholas46 min
May 27, 7:03 PM EDTSpecial Weather StatementRLXKanawha27 min

Nearby

Special Weather Statements in West Virginia, 2012Every special weather statement 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.