Alert archive / West Virginia / Severe Thunderstorm Watches in 2017

Severe Thunderstorm Watch 54

March 1, 2017Boyd County, Carter County, Greenup County, Kentucky; 9 counties in Ohio; 25 counties in West Virginia

The Storm Prediction Center issued this severe thunderstorm watch at Mar 1, 2017, 6:48 AM EST for Boyd County, Carter County, Greenup County, Kentucky; 9 counties in Ohio; 25 counties in West Virginia. It was in force for 5 hr.

The area

The outline as issued.

The facts

Issued
Mar 1, 2017, 6:48 AM EST (11:48 UTC)
Expired
Mar 1, 2017, 11:35 AM EST
In force
5 hr
Issued by
the Storm Prediction Center
Largest hail expected
1.5 in
Strongest gust expected
60 kt
All 37 counties

Boyd County, KY, Carter County, KY, Greenup County, KY, Athens County, OH, Gallia County, OH, Jackson County, OH, Lawrence County, OH, Meigs County, OH, Morgan County, OH, Perry County, OH, Vinton County, OH, Washington County, OH, Barbour County, WV, Braxton County, WV, Cabell County, WV, Calhoun County, WV, Clay County, WV, Doddridge County, WV, Gilmer County, WV, Harrison County, WV, Jackson County, WV, Kanawha County, WV, Lewis County, WV, Mason County, WV, Nicholas County, WV, Pleasants County, WV, Pocahontas County, WV, Putnam County, WV, Randolph County, WV, Ritchie County, WV, Roane County, WV, Taylor County, WV, Tyler County, WV, Upshur County, WV, Webster County, WV, Wirt County, WV, Wood County, WV

The radar

The Charleston,WV radar (KRLX), 73 km from the middle of the area, began a volume at 11:49 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 SPC expected

The probabilities SPC published with the watch, for the watch area over its life.

Two or more tornadoes
20%
One or more EF2 to EF5 tornadoes
5%
Ten or more severe wind reports
50%
One or more gusts of 65 knots or more
10%
Ten or more severe hail reports
20%
One or more hailstones of 2 inches or more
10%
Six or more combined severe hail and wind reports
70%

Warnings issued inside it

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

IssuedProductOfficeCountiesLasted
Mar 1, 7:36 AM ESTFlash Flood WarningRLXCalhoun, Doddridge, Gilmer, Jackson, Lewis, Ritchie and 2 more5 hr
Mar 1, 8:22 AM ESTSevere Thunderstorm WarningRLXGreenup23 min
Mar 1, 8:23 AM ESTFlash Flood WarningRLXAthens, Jackson, Morgan, Perry, Vinton3 hr
Mar 1, 8:34 AM ESTFlash Flood WarningRLXPerry3 hr
Mar 1, 8:35 AM ESTSevere Thunderstorm WarningRLXBoyd, Carter, Greenup, Lawrence25 min
Mar 1, 8:47 AM ESTSevere Thunderstorm WarningRLXGreenup28 min
Mar 1, 8:58 AM ESTTornado WarningRLXGallia, Meigs32 min
Mar 1, 9:01 AM ESTSevere Thunderstorm WarningRLXBoyd, Carter, Greenup, Lawrence44 min
Mar 1, 9:07 AM ESTFlash Flood WarningRLXAthens, Gallia, Jackson, Meigs, Morgan, Vinton5 hr
Mar 1, 9:09 AM ESTFlash Flood WarningRLXWashington5 hr
Mar 1, 9:12 AM ESTFlash Flood WarningRLXGreenup5 hr
Mar 1, 9:16 AM ESTSevere Thunderstorm WarningRLXGallia, Lawrence, Meigs29 min
Mar 1, 9:26 AM ESTSevere Thunderstorm WarningRLXBoone, Cabell, Kanawha, Lincoln, Mingo, Putnam and 1 more49 min
Mar 1, 9:28 AM ESTTornado WarningRLXMeigs32 min
Mar 1, 9:33 AM ESTTornado WarningRLXCalhoun, Jackson, Mason, Putnam, Roane27 min
Mar 1, 9:41 AM ESTSevere Thunderstorm WarningRLXClay, Jackson, Kanawha, Putnam, Roane34 min
Mar 1, 9:48 AM ESTSevere Thunderstorm WarningRLXBoone, Fayette, Kanawha, Lincoln, Logan, Mingo and 2 more27 min
Mar 1, 9:55 AM ESTTornado WarningRLXBraxton, Calhoun, Gilmer, Jackson, Roane35 min
Mar 1, 10:01 AM ESTSevere Thunderstorm WarningRLXCalhoun, Doddridge, Gilmer, Pleasants, Ritchie, Tyler and 1 more29 min
Mar 1, 10:16 AM ESTSevere Thunderstorm WarningRLXBraxton, Calhoun, Clay, Fayette, Kanawha, Nicholas and 2 more29 min
Mar 1, 10:18 AM ESTSevere Thunderstorm WarningRLXBoone, Fayette, Kanawha, Logan, Mingo, Nicholas and 2 more27 min
Mar 1, 10:25 AM ESTSevere Thunderstorm WarningRLXBraxton, Gilmer, Lewis, Randolph, Upshur, Webster35 min
Mar 1, 10:44 AM ESTSevere Thunderstorm WarningRLXFayette, Nicholas, Pocahontas, Raleigh, Randolph, Webster and 1 more31 min
Mar 1, 10:59 AM ESTSevere Thunderstorm WarningRLXPocahontas, Randolph, Upshur31 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

Cncnati-Daytn, OH (KILN), launched 00:00Z, 11.8 hours before the alert went out and 184 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 00:00Z on 2017-03-01Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 126 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 00:00Z on 2017-03-01The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 416 square meters per square second.1939587897117Sfc1 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
126 J/kg
Mixed-layer CIN
-51 J/kg
Mixed-layer LCL
490 m above ground
0-6 km bulk shear
54 kt
0-1 km storm-relative helicity
416 m²/s²
0-3 km storm-relative helicity
441 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.7

Open this sounding in Storm Lab

The text

As transmitted.

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SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Feb 28, 8:46 PM ESTMesoscale DiscussionSPCBallard, Caldwell, Calloway, Carlisle, Christian, Crittenden and 15 more119 min
Feb 28, 9:29 PM ESTTornado WatchSPCAnderson, Ballard, Bourbon, Breckinridge, Bullitt, Butler and 49 more12 hr
Feb 28, 11:03 PM ESTMesoscale DiscussionSPCBoone, Bracken, Campbell, Gallatin, Kenton, Pendleton117 min
Feb 28, 11:29 PM ESTTornado WatchSPCBoone, Bracken, Campbell, Carroll, Gallatin, Grant and 6 more8 hr
Mar 1, 2:32 AM ESTMesoscale DiscussionSPCAdair, Anderson, Bath, Boone, Bourbon, Boyd and 69 more88 min
Mar 1, 3:09 AM ESTMesoscale DiscussionSPCBallard, Caldwell, Calloway, Carlisle, Crittenden, Fulton and 6 more2 hr
Mar 1, 4:03 AM ESTTornado WatchSPCBallard, Caldwell, Calloway, Carlisle, Christian, Crittenden and 16 more5 hr
Mar 1, 5:19 AM ESTMesoscale DiscussionSPCAdair, Allen, Ballard, Barren, Boyle, Breckinridge and 53 more56 min
Mar 1, 5:57 AM ESTTornado WatchSPCAdair, Allen, Anderson, Barren, Boone, Bourbon and 55 more5 hr
Mar 1, 6:28 AM ESTMesoscale DiscussionSPCAdair, Allen, Anderson, Barren, Bath, Bell and 88 more2 hr
Mar 1, 7:47 AM ESTSevere Thunderstorm WatchSPCBath, Bell, Breathitt, Clay, Elliott, Estill and 28 more5 hr
Mar 1, 8:28 AM ESTMesoscale DiscussionSPCBell, Boyd, Breathitt, Carter, Clay, Clinton and 32 more92 min
Mar 1, 3:56 PM ESTMesoscale DiscussionSPCBoyd, Breathitt, Carter, Elliott, Floyd, Greenup and 8 more2 hr
Feb 28, 7:00 PM ESTMesoscale DiscussionSPCDefiance, Fulton, Hancock, Henry, Lucas, Paulding and 4 more90 min
Feb 28, 7:37 PM ESTSevere Thunderstorm WatchSPCDefiance, Fulton, Henry, Lucas, Ottawa, Paulding and 3 more8 hr
Feb 28, 9:41 PM ESTMesoscale DiscussionSPCDefiance, Fulton, Henry, Lucas, Paulding, Williams and 1 more94 min
Mar 1, 1:44 AM ESTMesoscale DiscussionSPCAllen, Auglaize, Darke, Defiance, Fulton, Hancock and 9 more61 min
Mar 1, 2:19 AM ESTMesoscale DiscussionSPCAshland, Ashtabula, Belmont, Carroll, Columbiana, Coshocton and 22 more86 min
Mar 1, 3:24 AM ESTSevere Thunderstorm WatchSPCAshland, Ashtabula, Crawford, Cuyahoga, Erie, Geauga and 22 more4 hr
Mar 1, 9:44 AM ESTMesoscale DiscussionSPCBerkeley, Grant, Greenbrier, Hampshire, Hardy, Jefferson and 7 more91 min
Mar 1, 10:38 AM ESTSevere Thunderstorm WatchSPCBerkeley, Grant, Greenbrier, Hampshire, Hardy, Jefferson and 6 more4 hr
Mar 1, 12:25 PM ESTMesoscale DiscussionSPCBerkeley, Hampshire, Jefferson, Morgan65 min

Nearby

Severe Thunderstorm Watches in West Virginia, 2017Severe Thunderstorm Watches in Ohio, 2017Severe Thunderstorm Watches in Kentucky, 2017Every severe thunderstorm watch in 2017

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.