Alert archive / West Virginia / Tornado Watches in 2004

Tornado Watch 348

May 31, 20046 states

The Storm Prediction Center issued this tornado watch at May 31, 2004, 12:40 AM EDT for 6 states. It was in force for 5 hr.

The area

The outline as issued.

The facts

Issued
May 31, 2004, 12:40 AM EDT (04:40 UTC)
Expired
May 31, 2004, 6:00 AM EDT
In force
5 hr
Issued by
the Storm Prediction Center
All 82 counties

Floyd County, KY, Harlan County, KY, Knott County, KY, Letcher County, KY, Martin County, KY, Pike County, KY, Garrett County, MD, Athens County, OH, Belmont County, OH, Gallia County, OH, Guernsey County, OH, Meigs County, OH, Monroe County, OH, Morgan County, OH, Noble County, OH, Washington County, OH, Fayette County, PA, Greene County, PA, Somerset County, PA, Bland County, VA, Buchanan County, VA, Carroll County, VA, City of Galax, VA, City of Norton, VA, City of Radford, VA, Dickenson County, VA, Giles County, VA, Grayson County, VA, Lee County, VA, Pulaski County, VA, Russell County, VA, Scott County, VA, Smyth County, VA, Tazewell County, VA, Washington County, VA, Wise County, VA, Wythe County, VA, Barbour County, WV, Boone County, WV, Braxton County, WV, Cabell County, WV, Calhoun County, WV, Clay County, WV, Doddridge County, WV, Fayette County, WV, Gilmer County, WV, Greenbrier County, WV, Harrison County, WV, Jackson County, WV, Kanawha County, WV, Lewis County, WV, Lincoln County, WV, Logan County, WV, Marion County, WV, Marshall County, WV, Mason County, WV, McDowell County, WV, Mercer County, WV, Mingo County, WV, Monongalia County, WV, Monroe County, WV, Nicholas County, WV, Ohio County, WV, Pleasants County, WV, Pocahontas County, WV, Preston County, WV, Putnam County, WV, Raleigh County, WV, Randolph County, WV, Ritchie County, WV, Roane County, WV, Summers County, WV, Taylor County, WV, Tucker County, WV, Tyler County, WV, Upshur County, WV, Wayne County, WV, Webster County, WV, Wetzel County, WV, Wirt County, WV, Wood County, WV, Wyoming County, WV

Warnings issued inside it

34 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.

IssuedProductOfficeCountiesLasted
May 31, 12:40 AM EDTFlash Flood WarningRLXMingo3 hr
May 31, 12:49 AM EDTSevere Thunderstorm WarningJKLFloyd41 min
May 31, 12:49 AM EDTSevere Thunderstorm WarningRLXMcDowell, Wyoming56 min
May 31, 12:52 AM EDTTornado WarningRLXRaleigh53 min
May 31, 1:03 AM EDTTornado WarningJKLPike42 min
May 31, 1:13 AM EDTTornado WarningMRXRussell, Washington47 min
May 31, 1:18 AM EDTTornado WarningMRXScott27 min
May 31, 1:44 AM EDTTornado WarningRLXRaleigh31 min
May 31, 1:59 AM EDTSevere Thunderstorm WarningMRXLee61 min
May 31, 2:07 AM EDTTornado WarningMRXWashington38 min
May 31, 2:08 AM EDTSevere Thunderstorm WarningRNKMonroe, Summers52 min
May 31, 2:24 AM EDTSevere Thunderstorm WarningRLXGallia51 min
May 31, 2:26 AM EDTSevere Thunderstorm WarningJKLFloyd, Harlan, Johnson, Knott64 min
May 31, 2:27 AM EDTSevere Thunderstorm WarningJKLFloyd, Harlan, Johnson, Knott63 min
May 31, 2:32 AM EDTSevere Thunderstorm WarningRNKSmyth28 min
May 31, 2:33 AM EDTSevere Thunderstorm WarningRLXWayne57 min
May 31, 2:49 AM EDTSevere Thunderstorm WarningJKLLetcher, Pike56 min
May 31, 2:51 AM EDTSevere Thunderstorm WarningRLXCabell, Mason54 min
May 31, 2:54 AM EDTSevere Thunderstorm WarningJKLMartin66 min
May 31, 2:55 AM EDTSevere Thunderstorm WarningJKLLetcher, Pike50 min
May 31, 2:55 AM EDTSevere Thunderstorm WarningJKLMartin65 min
May 31, 2:56 AM EDTSevere Thunderstorm WarningJKLLetcher, Pike49 min
May 31, 2:57 AM EDTSevere Thunderstorm WarningMRXLee, Scott, Wise, City of Norton48 min
May 31, 3:00 AM EDTFlash Flood WarningJKLFloyd, Johnson4 hr
May 31, 3:02 AM EDTFlash Flood WarningMRXLee3 hr
May 31, 3:05 AM EDTTornado WarningJKLFloyd, Pike55 min
May 31, 3:14 AM EDTFlash Flood WarningJKLHarlan, Letcher6 hr
May 31, 3:18 AM EDTSevere Thunderstorm WarningRLXLincoln, Putnam27 min
May 31, 3:31 AM EDTSevere Thunderstorm WarningRLXBoone, Kanawha, Logan, Mingo59 min
May 31, 3:46 AM EDTSevere Thunderstorm WarningMRXRussell, Scott, Washington, City of Bristol59 min
May 31, 4:13 AM EDTSevere Thunderstorm WarningRLXClay, Fayette, Nicholas, Raleigh, Wyoming62 min
May 31, 4:55 AM EDTFlash Flood WarningJKLBreathitt, Clay, Floyd, Harlan, Johnson, Letcher and 6 more6 hr
May 31, 5:24 AM EDTSevere Thunderstorm WarningRNKBland, Giles51 min
May 31, 5:43 AM EDTSevere Thunderstorm WarningRNKPulaski47 min

Discussions around it

SPC mesoscale discussions over the same counties from four hours before the watch to its end.

The nearest sounding before it

Roanoke, VA (KRNK), launched 00:00Z, 4.7 hours before the alert went out and 206 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 2004-05-31Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 429 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, Roanoke, VA at 00:00Z on 2004-05-31The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 203 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
429 J/kg
Mixed-layer CIN
-93 J/kg
Mixed-layer LCL
718 m above ground
0-6 km bulk shear
41 kt
0-1 km storm-relative helicity
203 m²/s²
0-3 km storm-relative helicity
256 m²/s²
Significant tornado parameter
0.3
Supercell composite
2.0

Open this sounding in Storm Lab

The text

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

000 
WWUS20 KWNS 310443
SEL8  
SPC WW 310440
MDZ000-OHZ000-PAZ000-VAZ000-WVZ000-311000-

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 348
NWS STORM PREDICTION CENTER NORMAN OK
1240 AM EDT MON MAY 31 2004

THE NWS STORM PREDICTION CENTER HAS ISSUED A
TORNADO WATCH FOR PORTIONS OF 

       FAR WESTERN MARYLAND PANHANDLE
       EAST CENTRAL OHIO
       SOUTHWEST PENNSYLVANIA
       WESTERN VIRGINIA
       WEST VIRGINIA

EFFECTIVE THIS MONDAY MORNING FROM 1240 AM UNTIL 600 AM EDT.

TORNADOES...HAIL TO 1.5 INCHES IN DIAMETER...THUNDERSTORM WIND
GUSTS TO 70 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE
AREAS.

THE TORNADO WATCH AREA IS ALONG AND 75 STATUTE MILES EAST AND WEST
OF A LINE FROM 65 MILES SOUTHWEST OF BLUEFIELD WEST VIRGINIA TO 40
MILES NORTH NORTHWEST OF MORGANTOWN WEST VIRGINIA.

REMEMBER...A TORNADO WATCH MEANS CONDITIONS ARE FAVORABLE FOR
TORNADOES AND SEVERE THUNDERSTORMS IN AND CLOSE TO THE WATCH AREA.
PERSONS IN THESE AREAS SHOULD BE ON THE LOOKOUT FOR THREATENING
WEATHER CONDITIONS AND LISTEN FOR LATER STATEMENTS AND POSSIBLE
WARNINGS.

OTHER WATCH INFORMATION...CONTINUE...WW 343...WW 344...WW 345...WW
346...WW 347...

DISCUSSION...INTENSE SQUALL LINE WITH EMBEDDED BOW ECHOES AND
SUPERCELLS WILL CONTINUE RACING EWD AT 40-50 KT ACROSS WW THROUGH
09-10Z.  IN ADDITION TO A THREAT OF WIDESPREAD DAMAGING WINDS...
SHEAR REMAINS VERY FAVORABLE FOR TORNADOES...BOTH WITHIN THE LINE
AND WITH ISOLATED CELLS AHEAD OF IT.

AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 1.5 INCHES. EXTREME TURBULENCE AND SURFACE
WIND GUSTS TO 60 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO
500. MEAN STORM MOTION VECTOR 26045.


...EVANS

363,0832 401,0813 401,0784 363,0804

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
May 30, 8:21 PM EDTMesoscale DiscussionSPCAnderson, Bath, Boone, Bourbon, Boyd, Boyle and 50 more84 min
May 30, 9:20 PM EDTTornado WatchSPCAdair, Anderson, Bath, Bell, Boone, Bourbon and 69 more7 hr
May 30, 9:39 PM EDTMesoscale DiscussionSPCBreckinridge, Butler, Caldwell, Crittenden, Daviess, Graves and 13 more96 min
May 30, 11:47 PM EDTMesoscale DiscussionSPCAdair, Anderson, Barren, Bath, Boone, Bourbon and 56 more58 min
May 31, 2:40 AM EDTMesoscale DiscussionSPCBath, Bell, Boyd, Breathitt, Carter, Clark and 38 more2 hr
May 31, 4:40 AM EDTMesoscale DiscussionSPCFloyd, Harlan, Knott, Letcher, Martin, Pike95 min
May 31, 2:53 PM EDTMesoscale DiscussionSPCCalvert, Charles, Saint Mary's, Somerset37 min
May 31, 3:50 PM EDTTornado WatchSPCCalvert, Charles, Dorchester, Montgomery, Prince George's, Saint Mary's and 1 more6 hr
May 31, 7:17 PM EDTMesoscale DiscussionSPCCalvert, Charles, Dorchester, Montgomery, Prince George's, Saint Mary's and 1 more118 min
May 31, 1:50 PM EDTMesoscale DiscussionSPCWilliams55 min
May 31, 1:40 AM EDTTornado WatchSPCCity of Bristol5 hr
May 31, 5:50 AM EDTSevere Thunderstorm WatchSPCCampbell, Carroll, Charlotte, Floyd, Franklin, Halifax and 9 more5 hr
May 31, 7:56 AM EDTMesoscale DiscussionSPCBedford, Campbell, Charlotte, Franklin, Halifax, Henry and 4 more2 hr
May 31, 9:10 AM EDTSevere Thunderstorm WatchSPCMecklenburg5 hr

Nearby

Tornado Watches in West Virginia, 2004Tornado Watches in Virginia, 2004Tornado Watches in Ohio, 2004Every tornado watch in 2004

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.