Alert archive / West Virginia / Special Weather Statements in 2011

Special Weather Statement, NWS Charleston, WV

April 27, 2011Mason County, West Virginia

NWS Charleston, WV issued this special weather statement at Apr 27, 2011, 12:39 PM EDT for Mason County, West Virginia. It was in force for 36 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
Apr 27, 2011, 12:39 PM EDT (16:39 UTC)
Expired
Apr 27, 2011, 1:15 PM EDT
In force
36 min
Issued by
NWS Charleston, WV

County Mason County, WV

The radar

The Charleston,WV radar (KRLX), 67 km from the middle of the area, began a volume at 16:42 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

Cncnati-Daytn, OH (KILN), launched 12:00Z, 4.7 hours before the alert went out and 161 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, Cncnati-Daytn, OH at 12:00Z on 2011-04-27Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 279 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Cncnati-Daytn, OH at 12:00Z on 2011-04-27The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 470 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
279 J/kg
Mixed-layer CIN
-56 J/kg
Mixed-layer LCL
846 m above ground
0-6 km bulk shear
56 kt
0-1 km storm-relative helicity
470 m²/s²
0-3 km storm-relative helicity
503 m²/s²
Significant tornado parameter
0.0
Supercell composite
4.9

Open this sounding in Storm Lab

The text

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

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What forecasters said that day

The local office's own words before this special weather statement went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Charleston, WV wrote its last area forecast discussion before this special weather statement went out at Apr 27, 12:23 PM EDT, 16 minutes earlier.

Area forecast discussion, Apr 27, 12:23 PM EDT, 16 minutes before
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Hazardous weather outlook, Apr 27, 4:30 AM EDT, 8 hours 9 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE CHARLESTON WV
430 AM EDT WED APR 27 2011

VAZ003-004-WVZ033>038-046-047-280830-
DICKENSON-BUCHANAN-MCDOWELL-WYOMING-RALEIGH-FAYETTE-NICHOLAS-WEBSTER-
POCAHONTAS-RANDOLPH-
430 AM EDT WED APR 27 2011

THIS HAZARDOUS WEATHER OUTLOOK IS FOR SOUTHWEST VIRGINIA...CENTRAL
WEST VIRGINIA...NORTHERN WEST VIRGINIA AND SOUTHERN WEST VIRGINIA.

.DAY ONE...TODAY AND TONIGHT.

THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS IN THE WEST
VIRGINIA MOUNTAINS...AND A MODERATE RISK IN SOUTHWEST VIRGINIA.
WHILE DAMAGING WINDS AND LARGE HAIL WILL BE THE PRIMARY
THREATS...ISOLATED TORNADOES ARE ALSO POSSIBLE.

THUNDERSTORMS THIS AFTERNOON AND ESPECIALLY TONIGHT MAY CONTAIN
HEAVY RAINFALL. IF CONFIDENCE INCREASES THAT THE RAINFALL COULD BE
EXCESSIVE...A FLASH FLOOD WATCH COULD BE ISSUED LATER TODAY.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY.

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION WILL LIKELY BE NEEDED LATER TODAY THROUGH
TONIGHT.

KYZ101>103-105-OHZ066-067-075-076-083>087-WVZ005>007-280830-
GREENUP-CARTER-BOYD-LAWRENCE-PERRY-MORGAN-ATHENS-WASHINGTON-JACKSON-
VINTON-MEIGS-GALLIA-WAYNE-CABELL-MASON-
430 AM EDT WED APR 27 2011

...FLASH FLOOD WATCH IN EFFECT FROM NOON EDT TODAY THROUGH LATE
TONIGHT...

THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTHEAST
KENTUCKY...SOUTHEAST OHIO AND WESTERN WEST VIRGINIA.

.DAY ONE...TODAY AND TONIGHT.

PLEASE LISTEN TO NOAA WEATHER RADIO OR GO TO WEATHER.GOV ON THE
INTERNET FOR MORE INFORMATION ABOUT THE FOLLOWING HAZARDS.

   FLASH FLOOD WATCH NOON TODAY THROUGH LATE TONIGHT.

THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS IN WEST VIRGINIA
AND SOUTHEAST OHIO...AND A MODERATE RISK IN NORTHEAST KENTUCKY.
WHILE DAMAGING WINDS AND LARGE HAIL WILL BE THE PRIMARY
THREATS...ISOLATED TORNADOES ARE ALSO POSSIBLE.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY.

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION WILL LIKELY BE NEEDED TODAY THROUGH TONIGHT.

WVZ008>011-013>020-024>032-039-040-280830-
JACKSON-WOOD-PLEASANTS-TYLER-LINCOLN-PUTNAM-KANAWHA-ROANE-WIRT-
CALHOUN-RITCHIE-DODDRIDGE-MINGO-LOGAN-BOONE-CLAY-BRAXTON-GILMER-
LEWIS-HARRISON-TAYLOR-UPSHUR-BARBOUR-
430 AM EDT WED APR 27 2011

...FLASH FLOOD WATCH IN EFFECT FROM 3 PM EDT THIS AFTERNOON THROUGH
LATE TONIGHT...

THIS HAZARDOUS WEATHER OUTLOOK IS FOR CENTRAL WEST
VIRGINIA...NORTHERN WEST VIRGINIA AND SOUTHERN WEST VIRGINIA.

.DAY ONE...TODAY AND TONIGHT.

PLEASE LISTEN TO NOAA WEATHER RADIO OR GO TO WEATHER.GOV ON THE
INTERNET FOR MORE INFORMATION ABOUT THE FOLLOWING HAZARDS.

   FLASH FLOOD WATCH 3 PM THIS AFTERNOON THROUGH LATE TONIGHT.

THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS TODAY THROUGH
TONIGHT. WHILE DAMAGING WINDS AND LARGE HAIL WILL BE THE PRIMARY
THREATS...ISOLATED TORNADOES ARE ALSO POSSIBLE.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY.

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION WILL LIKELY BE NEEDED TODAY THROUGH TONIGHT.

In the hours before

Special weather statement, Apr 27, 12:21 PM EDT, 18 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE CHARLESTON WV
1221 PM EDT WED APR 27 2011

OHZ067-075-076-083>087-271645-
ATHENS OH-GALLIA OH-JACKSON OH-LAWRENCE OH-MEIGS OH-MORGAN OH-
VINTON OH-WASHINGTON OH-
1221 PM EDT WED APR 27 2011

...A STRONG THUNDERSTORM WILL AFFECT ATHENS...GALLIA...LAWRENCE...
MORGAN...NORTHWESTERN WASHINGTON...SOUTHEASTERN JACKSON...
SOUTHEASTERN VINTON AND WESTERN MEIGS COUNTIES...

AT 1212 PM EDT...A STRONG THUNDERSTORM WAS LOCATED OVER IRONTON...
MOVING NORTHEAST AT 80 MPH.

WIND GUSTS TO 50 MPH ARE POSSIBLE WITH THIS STORM.

THIS STORM WILL BE NEAR RIO GRANDE AROUND 1230 PM...VINTON AROUND
1235 PM...DEXTER AROUND 1240 PM AND DYESVILLE AROUND 1245 PM.

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

LAT...LON 3976 8164 3968 8164 3966 8158 3959 8158
      3958 8155 3848 8262 3849 8264 3858 8278
      3862 8276 3977 8180

14
Special weather statement, Apr 27, 12:39 PM EDT, 0 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE CHARLESTON WV
1239 PM EDT WED APR 27 2011

OHZ086-087-WVZ006-007-271715-
CABELL WV-GALLIA OH-LAWRENCE OH-MASON WV-
1239 PM EDT WED APR 27 2011

...A STRONG THUNDERSTORM WILL AFFECT NORTH CENTRAL CABELL...NORTHERN
MASON...SOUTHEASTERN GALLIA AND SOUTHEASTERN LAWRENCE COUNTIES...

AT 1236 PM EDT...A STRONG THUNDERSTORM WAS LOCATED 7 MILES NORTHWEST
OF PROCTORVILLE...MOVING NORTHEAST AT 55 MPH.

WIND GUSTS TO 40 MPH ARE POSSIBLE WITH THIS STORM.

THIS STORM WILL BE NEAR CROWN CITY AROUND 1245 PM...ASHTON AROUND
1250 PM...GALLOPOLIS FERRY AROUND 100 PM...HENDERSON AROUND 105 PM...
CHESHIRE AROUND 110 PM AND LETART AROUND 115 PM.

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

LAT...LON 3899 8210 3898 8210 3901 8204 3892 8191
      3889 8193 3885 8189 3884 8189 3843 8239
      3855 8256

14

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 27, 3:40 AM EDTFlash Flood WatchRLXBarbour, Boone, Braxton, Cabell, Calhoun, Clay and 22 more28 hr
Apr 27, 6:32 PM EDTSpecial Weather StatementRLXBarbour, Braxton, Lewis, Taylor, Upshur43 min
Apr 27, 6:35 PM EDTSpecial Weather StatementRLXBarbour, Braxton, Lewis, Taylor, Upshur40 min
Apr 27, 6:47 PM EDTSevere Thunderstorm WarningRLXBraxton, Clay, Lewis, Nicholas, Randolph, Upshur and 1 more19 min
Apr 27, 12:21 PM EDTSpecial Weather StatementRLXAthens, Gallia, Lawrence, Meigs, Morgan24 min
Apr 26, 8:22 PM EDTSpecial Weather StatementRLXHighland23 min

Nearby

Special Weather Statements in West Virginia, 2011Every special weather statement in 2011

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.