Alert archive / West Virginia / Severe Thunderstorm Watches in 2015
Severe Thunderstorm Watch 33
The Storm Prediction Center issued this severe thunderstorm watch at Apr 8, 2015, 12:33 PM EDT for 11 counties in Kentucky; Monroe County, Noble County, Ohio; 35 counties in West Virginia. It was in force for 5 hr.
The area
The outline as issued.
The facts
- Issued
- Apr 8, 2015, 12:33 PM EDT (16:33 UTC)
- Expired
- Apr 8, 2015, 6:00 PM EDT
- In force
- 5 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 1.5 in
- Strongest gust expected
- 60 kt
All 48 counties
Floyd County, KY, Johnson County, KY, Lawrence County, KY, Magoffin County, KY, Martin County, KY, Menifee County, KY, Montgomery County, KY, Morgan County, KY, Pike County, KY, Powell County, KY, Wolfe County, KY, Monroe County, OH, Noble County, OH, 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, Harrison County, WV, Jackson County, WV, Kanawha County, WV, Lewis County, WV, Lincoln County, WV, Logan County, WV, Marion County, WV, Mason County, WV, McDowell County, WV, Mingo County, WV, Monongalia County, WV, Nicholas County, WV, Pleasants County, WV, Putnam County, WV, Raleigh County, WV, Ritchie County, WV, Roane County, WV, Taylor 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
The radar
The Charleston,WV radar (KRLX), 53 km from the middle of the area, began a volume at 16:35 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
- 10%
- One or more EF2 to EF5 tornadoes
- 2%
- Ten or more severe wind reports
- 60%
- One or more gusts of 65 knots or more
- 20%
- Ten or more severe hail reports
- 20%
- One or more hailstones of 2 inches or more
- 5%
- Six or more combined severe hail and wind reports
- 80%
Warnings issued inside it
10 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 8, 12:56 PM EDT | Severe Thunderstorm Warning | RLX | Cabell, Jackson, Mason, Wayne | 64 min |
| Apr 8, 2:05 PM EDT | Severe Thunderstorm Warning | JKL | Elliott, Morgan | 40 min |
| Apr 8, 2:13 PM EDT | Severe Thunderstorm Warning | RLX | Lawrence | 62 min |
| Apr 8, 2:25 PM EDT | Severe Thunderstorm Warning | JKL | Elliott, Johnson, Morgan | 50 min |
| Apr 8, 3:03 PM EDT | Severe Thunderstorm Warning | JKL | Johnson, Martin | 57 min |
| Apr 8, 3:18 PM EDT | Severe Thunderstorm Warning | RLX | Logan, Mingo, Wayne | 57 min |
| Apr 8, 3:39 PM EDT | Severe Thunderstorm Warning | JKL | Pike | 51 min |
| Apr 8, 4:05 PM EDT | Severe Thunderstorm Warning | RLX | Logan, McDowell, Mingo, Wyoming | 55 min |
| Apr 8, 4:28 PM EDT | Severe Thunderstorm Warning | JKL | Pike | 19 min |
| Apr 8, 5:01 PM EDT | Severe Thunderstorm Warning | RLX | McDowell | 44 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 12:00Z, 4.6 hours before the alert went out and 178 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
- 487 J/kg
- Mixed-layer CIN
- -110 J/kg
- Mixed-layer LCL
- 711 m above ground
- 0-6 km bulk shear
- 38 kt
- 0-1 km storm-relative helicity
- 166 m²/s²
- 0-3 km storm-relative helicity
- 194 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- -0.1
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 7, 8:58 PM EDT | Mesoscale Discussion | SPC | Bell, Breathitt, Clay, Floyd, Harlan, Jackson and 14 more | 62 min |
| Apr 8, 10:16 AM EDT | Mesoscale Discussion | SPC | Bath, Boone, Bourbon, Boyd, Bracken, Campbell and 30 more | 119 min |
| Apr 8, 10:34 AM EDT | Severe Thunderstorm Watch | SPC | Bath, Boone, Bourbon, Boyd, Bracken, Campbell and 20 more | 5 hr |
| Apr 8, 11:52 AM EDT | Mesoscale Discussion | SPC | Bath, Bourbon, Boyd, Bracken, Carter, Elliott and 17 more | 83 min |
| Apr 8, 1:50 PM EDT | Mesoscale Discussion | SPC | Jefferson, Oldham | 85 min |
| Apr 8, 1:51 PM EDT | Mesoscale Discussion | SPC | Boyd, Breathitt, Carter, Elliott, Floyd, Greenup and 10 more | 84 min |
| Apr 8, 2:55 PM EDT | Mesoscale Discussion | SPC | Adair, Allen, Anderson, Barren, Boyle, Breckinridge and 54 more | 2 hr |
| Apr 8, 3:22 PM EDT | Mesoscale Discussion | SPC | Boyd, Breathitt, Clay, Elliott, Floyd, Johnson and 12 more | 83 min |
| Apr 8, 5:50 PM EDT | Mesoscale Discussion | SPC | Adair, Anderson, Barren, Bath, Bourbon, Boyle and 50 more | 115 min |
Nearby
Severe Thunderstorm Watches in West Virginia, 2015Severe Thunderstorm Watches in Kentucky, 2015Severe Thunderstorm Watches in Ohio, 2015Every severe thunderstorm watch in 2015
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.