Alert archive / West Virginia / Severe Thunderstorm Watches in 2018
Severe Thunderstorm Watch 30
The Storm Prediction Center issued this severe thunderstorm watch at Apr 3, 2018, 7:07 PM EDT for 4 states. It was in force for 6 hr.
The area
The outline as issued.
The facts
- Issued
- Apr 3, 2018, 7:07 PM EDT (23:07 UTC)
- Expired
- Apr 4, 2018, 1:00 AM EDT
- In force
- 6 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 1.5 in
- Strongest gust expected
- 60 kt
All 50 counties
Boyd County, KY, Carter County, KY, Greenup County, KY, Lawrence County, KY, Athens County, OH, Belmont County, OH, Gallia County, OH, Guernsey County, OH, Harrison County, OH, Jackson County, OH, Jefferson County, OH, Lawrence County, OH, Meigs County, OH, Monroe County, OH, Morgan County, OH, Muskingum County, OH, Noble County, OH, Perry County, OH, Vinton County, OH, Washington County, OH, Greene County, PA, Washington County, PA, Braxton County, WV, Brooke County, WV, Cabell County, WV, Calhoun County, WV, Clay County, WV, Doddridge County, WV, Gilmer County, WV, Hancock County, WV, Harrison County, WV, Jackson County, WV, Kanawha County, WV, Lewis County, WV, Lincoln County, WV, Marion County, WV, Marshall County, WV, Mason County, WV, Monongalia County, WV, Ohio County, WV, Pleasants County, WV, Putnam County, WV, Ritchie County, WV, Roane County, WV, Taylor County, WV, Tyler County, WV, Wayne County, WV, Wetzel County, WV, Wirt County, WV, Wood County, WV
The radar
The Charleston,WV radar (KRLX), 139 km from the middle of the area, began a volume at 23:09 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
- 60%
- One or more gusts of 65 knots or more
- 20%
- Ten or more severe hail reports
- 40%
- One or more hailstones of 2 inches or more
- 20%
- Six or more combined severe hail and wind reports
- 90%
Warnings issued inside it
8 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 3, 7:35 PM EDT | Severe Thunderstorm Warning | RLX | Greenup | 55 min |
| Apr 3, 7:57 PM EDT | Severe Thunderstorm Warning | PBZ | Belmont, Jefferson | 48 min |
| Apr 3, 8:09 PM EDT | Severe Thunderstorm Warning | PBZ | Allegheny, Greene, Washington | 26 min |
| Apr 3, 8:15 PM EDT | Severe Thunderstorm Warning | RLX | Athens, Gallia, Meigs, Vinton | 45 min |
| Apr 3, 8:33 PM EDT | Severe Thunderstorm Warning | PBZ | Allegheny, Armstrong, Indiana, Washington, Westmoreland | 27 min |
| Apr 3, 8:42 PM EDT | Severe Thunderstorm Warning | RLX | Jackson, Mason | 33 min |
| Apr 3, 10:13 PM EDT | Severe Thunderstorm Warning | RLX | Doddridge, Harrison | 34 min |
| Apr 3, 11:37 PM EDT | Severe Thunderstorm Warning | RLX | Lawrence | 23 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
Pittsburgh, PA (KAGC), launched 12:00Z, 11.1 hours before the alert went out and 136 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.
- Mixed-layer CAPE
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 458 m above ground
- 0-6 km bulk shear
- 46 kt
- 0-1 km storm-relative helicity
- 291 m²/s²
- 0-3 km storm-relative helicity
- 271 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 3, 12:41 PM EDT | Mesoscale Discussion | SPC | Boone, Breckinridge, Bullitt, Campbell, Carroll, Daviess and 12 more | 3 hr |
| Apr 3, 1:16 PM EDT | Tornado Watch | SPC | Boone, Bourbon, Bracken, Campbell, Carroll, Daviess and 20 more | 6 hr |
| Apr 3, 1:57 PM EDT | Mesoscale Discussion | SPC | Ballard, Carlisle, Crittenden, Fulton, Graves, Hickman and 4 more | 2 hr |
| Apr 3, 2:33 PM EDT | Tornado Watch | SPC | Ballard, Caldwell, Calloway, Carlisle, Crittenden, Daviess and 13 more | 7 hr |
| Apr 3, 4:18 PM EDT | Mesoscale Discussion | SPC | Boone, Bracken, Bullitt, Campbell, Carroll, Franklin and 17 more | 117 min |
| Apr 3, 4:34 PM EDT | Mesoscale Discussion | SPC | Ballard, Carlisle, Crittenden, Fulton, Graves, Hickman and 4 more | 86 min |
| Apr 3, 6:38 PM EDT | Mesoscale Discussion | SPC | Bath, Bourbon, Boyd, Carter, Clark, Elliott and 12 more | 2 hr |
| Apr 3, 7:30 PM EDT | Tornado Watch | SPC | Adair, Allen, Anderson, Barren, Bath, Boone and 62 more | 5 hr |
Nearby
Severe Thunderstorm Watches in West Virginia, 2018Severe Thunderstorm Watches in Ohio, 2018Severe Thunderstorm Watches in Kentucky, 2018Every severe thunderstorm watch in 2018
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.