Alert archive / Kentucky / Tornado Watches in 2009
Tornado Watch 93
The Storm Prediction Center issued this tornado watch at Mar 28, 2009, 7:24 PM EDT for 10 counties in Indiana; 27 counties in Kentucky; 12 counties in Tennessee. It was in force for 4 hr.
The area
The outline as issued.
The facts
- Issued
- Mar 28, 2009, 7:24 PM EDT (23:24 UTC)
- Expired
- Mar 28, 2009, 11:11 PM EDT
- In force
- 4 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 1.5 in
- Strongest gust expected
- 60 kt
All 49 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, Anderson County, KY, Barren County, KY, Boyle County, KY, Bullitt County, KY, Casey County, KY, Clinton County, KY, Cumberland County, KY, Green County, KY, Hardin County, KY, Hart County, KY, Henry County, KY, Jefferson County, KY, Larue County, KY, Marion County, KY, Meade County, KY, Mercer County, KY, Metcalfe County, KY, Monroe County, KY, Nelson County, KY, Oldham County, KY, Russell County, KY, Shelby County, KY, Spencer County, KY, Taylor County, KY, Trimble County, KY, Washington County, KY, Clay County, TN, Cumberland County, TN, DeKalb County, TN, Fentress County, TN, Grundy County, TN, Jackson County, TN, Overton County, TN, Pickett County, TN, Putnam County, TN, Van Buren County, TN, Warren County, TN, White County, TN
The radar
The Louisville radar (KLVX), 48 km from the middle of the area, began a volume at 23:25 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
- 40%
- One or more EF2 to EF5 tornadoes
- 20%
- Ten or more severe wind reports
- 30%
- One or more gusts of 65 knots or more
- 30%
- 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
6 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 28, 8:11 PM EDT | Severe Thunderstorm Warning | LMK | Crawford, Harrison, Perry | 49 min |
| Mar 28, 8:22 PM EDT | Severe Thunderstorm Warning | OHX | Coffee, Grundy, Warren | 23 min |
| Mar 28, 8:29 PM EDT | Tornado Warning | LMK | Grayson, Hardin | 31 min |
| Mar 28, 8:33 PM EDT | Tornado Warning | LMK | Crawford, Harrison | 27 min |
| Mar 28, 8:45 PM EDT | Severe Thunderstorm Warning | OHX | Grundy, Van Buren, Warren | 30 min |
| Mar 28, 9:16 PM EDT | Tornado Warning | OHX | Grundy, Van Buren, Warren | 29 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 12:00Z, 11.4 hours before the alert went out and 168 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
- 5 J/kg
- Mixed-layer CIN
- -34 J/kg
- Mixed-layer LCL
- 574 m above ground
- 0-6 km bulk shear
- 32 kt
- 0-1 km storm-relative helicity
- 113 m²/s²
- 0-3 km storm-relative helicity
- 75 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
396
WWUS20 KWNS 282322
SEL3
SPC WW 282322
INZ000-KYZ000-TNZ000-290400-
URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 93
NWS STORM PREDICTION CENTER NORMAN OK
625 PM CDT SAT MAR 28 2009
THE NWS STORM PREDICTION CENTER HAS ISSUED A
TORNADO WATCH FOR PORTIONS OF
SOUTHERN INDIANA
CENTRAL KENTUCKY
MIDDLE TENNESSEE
EFFECTIVE THIS SATURDAY EVENING FROM 625 PM UNTIL 1100 PM CDT.
TORNADOES...HAIL TO 1.5 INCHES IN DIAMETER...THUNDERSTORM WIND
GUSTS TO 70 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE
AREAS.
THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 40 STATUTE
MILES EAST AND WEST OF A LINE FROM 45 MILES NORTH NORTHWEST OF
LOUISVILLE KENTUCKY TO 25 MILES SOUTHWEST OF CROSSVILLE
TENNESSEE. FOR A COMPLETE DEPICTION OF THE WATCH SEE THE
ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU3).
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 90...WW 91...WW 92...
DISCUSSION...LINE OF SUPERCELL THUNDERSTORMS CONTINUES TO TRACK
EASTWARD ACROSS CENTRAL KY/MIDDLE TN. SUFFICIENT INSTABILITY
SUGGESTS STORMS MAY PERSIST FOR ANOTHER 2-3 HOURS WITH A CONTINUED
THREAT OF DAMAGING WINDS...LARGE HAIL...AND ISOLATED TORNADOES.
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
400. MEAN STORM MOTION VECTOR 22030.
...HARTSPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 28, 1:58 PM EDT | Mesoscale Discussion | SPC | Posey, Spencer, Vanderburgh, Warrick | 92 min |
| Mar 28, 3:23 PM EDT | Tornado Watch | SPC | Posey, Spencer, Vanderburgh, Warrick | 7 hr |
| Mar 28, 6:18 PM EDT | Mesoscale Discussion | SPC | Spencer, Vanderburgh, Warrick | 57 min |
Nearby
Tornado Watches in Kentucky, 2009Tornado Watches in Tennessee, 2009Tornado Watches in Indiana, 2009Every tornado watch in 2009
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.