Alert archive / Kentucky / Tornado Watches in 2020
Tornado Watch 72
The Storm Prediction Center issued this tornado watch at Mar 28, 2020, 9:15 PM EDT for 10 counties in Indiana; 37 counties in Kentucky. It was in force for 6 hr.
The area
The outline as issued.
The facts
- Issued
- Mar 28, 2020, 9:15 PM EDT (01:15 UTC)
- Expired
- Mar 29, 2020, 3:00 AM EDT
- In force
- 6 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 1.5 in
- Strongest gust expected
- 60 kt
All 47 counties
Clark County, IN, Crawford County, IN, Dubois County, IN, Floyd County, IN, Harrison County, IN, Jefferson County, IN, Orange County, IN, Perry County, IN, Scott County, IN, Washington County, IN, Adair County, KY, Allen County, KY, Anderson County, KY, Barren County, KY, Boyle County, KY, Breckinridge County, KY, Bullitt County, KY, Butler County, KY, Casey County, KY, Cumberland County, KY, Edmonson County, KY, Franklin County, KY, Grayson County, KY, Green County, KY, Hancock County, KY, Hardin County, KY, Hart County, KY, Henry County, KY, Jefferson County, KY, Larue County, KY, Logan County, KY, Marion County, KY, Meade County, KY, Mercer County, KY, Metcalfe County, KY, Monroe County, KY, Nelson County, KY, Ohio County, KY, Oldham County, KY, Shelby County, KY, Simpson County, KY, Spencer County, KY, Taylor County, KY, Trimble County, KY, Warren County, KY, Washington County, KY, Woodford County, KY
The radar
The Louisville radar (KLVX), 18 km from the middle of the area, began a volume at 01:14 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
- 50%
- One or more EF2 to EF5 tornadoes
- 30%
- Ten or more severe wind reports
- 70%
- One or more gusts of 65 knots or more
- 20%
- Ten or more severe hail reports
- 30%
- One or more hailstones of 2 inches or more
- 20%
- Six or more combined severe hail and wind reports
- 90%
Warnings issued inside it
20 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 28, 9:37 PM EDT | Tornado Warning | LMK | Crawford, Dubois, Perry | 23 min |
| Mar 28, 9:54 PM EDT | Severe Thunderstorm Warning | LMK | Crawford, Harrison, Perry | 36 min |
| Mar 28, 9:56 PM EDT | Severe Thunderstorm Warning | LMK | Crawford, Dubois, Orange, Perry, Washington | 34 min |
| Mar 28, 10:01 PM EDT | Severe Thunderstorm Warning | LMK | Butler, Edmonson, Grayson | 29 min |
| Mar 28, 10:02 PM EDT | Tornado Warning | LMK | Crawford, Harrison, Perry | 28 min |
| Mar 28, 10:05 PM EDT | Severe Thunderstorm Warning | LMK | Perry | 25 min |
| Mar 28, 10:17 PM EDT | Severe Thunderstorm Warning | LMK | Breckinridge, Meade | 28 min |
| Mar 28, 10:25 PM EDT | Severe Thunderstorm Warning | LMK | Scott, Washington | 35 min |
| Mar 28, 10:28 PM EDT | Severe Thunderstorm Warning | LMK | Clark, Crawford, Floyd, Harrison, Scott, Washington | 32 min |
| Mar 28, 10:35 PM EDT | Severe Thunderstorm Warning | LMK | Edmonson, Grayson, Hardin, Hart, Larue | 25 min |
| Mar 28, 10:40 PM EDT | Severe Thunderstorm Warning | LMK | Floyd, Harrison | 35 min |
| Mar 28, 11:02 PM EDT | Severe Thunderstorm Warning | LMK | Jefferson, Oldham, Shelby | 28 min |
| Mar 28, 11:02 PM EDT | Severe Thunderstorm Warning | LMK | Green, Hardin, Hart, Larue, Marion, Nelson | 43 min |
| Mar 28, 11:22 PM EDT | Severe Thunderstorm Warning | LMK | Edmonson, Logan, Simpson, Warren | 28 min |
| Mar 28, 11:40 PM EDT | Flash Flood Warning | LMK | Butler, Edmonson, Grayson | 95 min |
| Mar 28, 11:54 PM EDT | Severe Thunderstorm Warning | LMK | Logan, Simpson | 51 min |
| Mar 29, 12:14 AM EDT | Severe Thunderstorm Warning | LMK | Allen, Logan, Simpson, Warren | 46 min |
| Mar 29, 12:35 AM EDT | Severe Thunderstorm Warning | LMK | Barren, Edmonson, Grayson, Hart | 40 min |
| Mar 29, 12:48 AM EDT | Flash Flood Warning | LMK | Edmonson, Hart, Larue, Warren | 58 min |
| Mar 29, 12:54 AM EDT | Severe Thunderstorm Warning | LMK | Boyle, Garrard, Lincoln, Marion, Mercer, Washington | 20 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
Nashville Metro, TN (KBNA), launched 00:00Z, 1.3 hours before the alert went out and 208 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
- 251 J/kg
- Mixed-layer CIN
- -107 J/kg
- Mixed-layer LCL
- 1430 m above ground
- 0-6 km bulk shear
- 71 kt
- 0-1 km storm-relative helicity
- 132 m²/s²
- 0-3 km storm-relative helicity
- 206 m²/s²
- Significant tornado parameter
- 0.1
- Supercell composite
- 1.5
The text
As transmitted.
919 WWUS20 KWNS 290112 SEL2 SPC WW 290112 INZ000-KYZ000-290700- URGENT - IMMEDIATE BROADCAST REQUESTED Tornado Watch Number 72 NWS Storm Prediction Center Norman OK 915 PM EDT Sat Mar 28 2020 The NWS Storm Prediction Center has issued a * Tornado Watch for portions of Far southern Indiana Central Kentucky * Effective this Saturday night and Sunday morning from 915 PM until 300 AM EDT. * Primary threats include... A few tornadoes and a couple intense tornadoes possible Scattered damaging wind gusts to 70 mph likely Isolated large hail events to 1.5 inches in diameter possible SUMMARY...Line of strong to severe thunderstorms will spread east from western into central Kentucky with a couple discrete supercells possible just ahead of it. Damaging winds and a few tornadoes are the main hazards. The tornado watch area is approximately along and 60 statute miles east and west of a line from 35 miles north of Louisville KY to 20 miles south of Bowling Green KY. For a complete depiction of the watch see the associated watch outline update (WOUS64 KWNS WOU2). PRECAUTIONARY/PREPAREDNESS ACTIONS... 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 69...WW 70...WW 71... 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 450. Mean storm motion vector 24045. ...Grams
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 28, 8:38 PM EDT | Mesoscale Discussion | SPC | Crawford, Floyd, Harrison, Perry, Spencer | 67 min |
| Mar 28, 10:23 PM EDT | Mesoscale Discussion | SPC | Bartholomew, Blackford, Brown, Dearborn, Decatur, Delaware and 20 more | 97 min |
| Mar 28, 11:34 PM EDT | Mesoscale Discussion | SPC | Dearborn, Ohio, Switzerland | 86 min |
| Mar 29, 2:50 AM EDT | Mesoscale Discussion | SPC | Clinton, Wayne | 85 min |
Nearby
Tornado Watches in Kentucky, 2020Tornado Watches in Indiana, 2020Every tornado watch in 2020
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.