Alert archive / Kentucky / Severe Thunderstorm Watches in 2017
Severe Thunderstorm Watch 72
The Storm Prediction Center issued this severe thunderstorm watch at Mar 9, 2017, 5:02 PM CST for 5 counties in Illinois; 13 counties in Kentucky; 10 counties in Missouri. It was in force for 5 hr.
The area
The outline as issued.
The facts
- Issued
- Mar 9, 2017, 5:02 PM CST (23:02 UTC)
- Expired
- Mar 9, 2017, 9:42 PM CST
- In force
- 5 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 2 in
- Strongest gust expected
- 60 kt
All 28 counties
Alexander County, IL, Johnson County, IL, Massac County, IL, Pulaski County, IL, Union County, IL, Ballard County, KY, Caldwell County, KY, Calloway County, KY, Carlisle County, KY, Christian County, KY, Fulton County, KY, Graves County, KY, Hickman County, KY, Lyon County, KY, Marshall County, KY, McCracken County, KY, Todd County, KY, Trigg County, KY, Bollinger County, MO, Butler County, MO, Cape Girardeau County, MO, Carter County, MO, Mississippi County, MO, New Madrid County, MO, Ripley County, MO, Scott County, MO, Stoddard County, MO, Wayne County, MO
The radar
The Paducah radar (KPAH), 128 km from the middle of the area, began a volume at 23:02 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
- 2%
- Ten or more severe wind reports
- 40%
- One or more gusts of 65 knots or more
- 10%
- Ten or more severe hail reports
- 50%
- One or more hailstones of 2 inches or more
- 30%
- Six or more combined severe hail and wind reports
- 80%
Warnings issued inside it
21 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 9, 5:08 PM CST | Severe Thunderstorm Warning | PAH | Carter, Ripley, Wayne | 67 min |
| Mar 9, 5:48 PM CST | Tornado Warning | PAH | Carter | 27 min |
| Mar 9, 6:04 PM CST | Tornado Warning | PAH | Butler, Wayne | 26 min |
| Mar 9, 6:11 PM CST | Severe Thunderstorm Warning | PAH | Butler, Carter, Ripley, Wayne | 49 min |
| Mar 9, 6:26 PM CST | Tornado Warning | PAH | Butler, Wayne | 49 min |
| Mar 9, 6:39 PM CST | Flash Flood Warning | PAH | Butler, Carter, Ripley, Wayne | 4 hr |
| Mar 9, 6:41 PM CST | Tornado Warning | PAH | Butler, Ripley | 36 min |
| Mar 9, 6:59 PM CST | Tornado Warning | PAH | Stoddard | 46 min |
| Mar 9, 7:13 PM CST | Severe Thunderstorm Warning | PAH | Mississippi, New Madrid, Scott, Stoddard | 47 min |
| Mar 9, 7:23 PM CST | Severe Thunderstorm Warning | PAH | Graves, Marshall | 22 min |
| Mar 9, 7:24 PM CST | Tornado Warning | PAH | Butler, New Madrid, Stoddard | 36 min |
| Mar 9, 7:27 PM CST | Severe Thunderstorm Warning | PAH | Carlisle, Graves, Hickman | 20 min |
| Mar 9, 7:44 PM CST | Severe Thunderstorm Warning | PAH | Calloway, Marshall, Trigg | 31 min |
| Mar 9, 7:54 PM CST | Tornado Warning | PAH | New Madrid, Stoddard | 35 min |
| Mar 9, 8:05 PM CST | Severe Thunderstorm Warning | PAH | Fulton | 55 min |
| Mar 9, 8:07 PM CST | Severe Thunderstorm Warning | PAH | Caldwell, Christian, Trigg | 23 min |
| Mar 9, 8:21 PM CST | Severe Thunderstorm Warning | PAH | Fulton, Hickman | 41 min |
| Mar 9, 8:34 PM CST | Tornado Warning | PAH | Fulton, Hickman | 24 min |
| Mar 9, 8:45 PM CST | Severe Thunderstorm Warning | PAH | Trigg | 19 min |
| Mar 9, 9:08 PM CST | Tornado Warning | PAH | Calloway | 22 min |
| Mar 9, 9:14 PM CST | Severe Thunderstorm Warning | PAH | Calloway | 31 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
Little Rock, AR (KBYH), launched 12:00Z, 11.0 hours before the alert went out and 251 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
- 1482 m above ground
- 0-6 km bulk shear
- 42 kt
- 0-1 km storm-relative helicity
- 89 m²/s²
- 0-3 km storm-relative helicity
- 148 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 |
|---|---|---|---|---|
| Mar 9, 4:45 PM CST | Mesoscale Discussion | SPC | Alexander | 90 min |
| Mar 9, 10:02 AM CST | Mesoscale Discussion | SPC | Barton, Bates, Benton, Camden, Cedar, Dade and 9 more | 88 min |
| Mar 9, 11:10 AM CST | Severe Thunderstorm Watch | SPC | Barry, Barton, Bates, Benton, Camden, Cedar and 30 more | 10 hr |
| Mar 9, 1:04 PM CST | Mesoscale Discussion | SPC | Barry, Barton, Cedar, Christian, Dade, Greene and 7 more | 86 min |
| Mar 9, 5:36 PM CST | Mesoscale Discussion | SPC | Barry, Christian, Douglas, Greene, Howell, Jasper and 10 more | 84 min |
Nearby
Severe Thunderstorm Watches in Kentucky, 2017Severe Thunderstorm Watches in Missouri, 2017Severe Thunderstorm Watches in Illinois, 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.