Alert archive / Indiana / Tornado Watches in 2009

Tornado Watch 370

June 11, 200935 counties in Indiana; 21 counties in Kentucky

The Storm Prediction Center issued this tornado watch at Jun 11, 2009, 12:06 AM EDT for 35 counties in Indiana; 21 counties in Kentucky. It was in force for 5 hr.

The area

The outline as issued.

The facts

Issued
Jun 11, 2009, 12:06 AM EDT (04:06 UTC)
Expired
Jun 11, 2009, 5:20 AM EDT
In force
5 hr
Issued by
the Storm Prediction Center
Largest hail expected
1.5 in
Strongest gust expected
50 kt
All 56 counties

Bartholomew County, IN, Brown County, IN, Clark County, IN, Clay County, IN, Crawford County, IN, Daviess County, IN, Decatur County, IN, Dubois County, IN, Floyd County, IN, Gibson County, IN, Greene County, IN, Harrison County, IN, Jackson County, IN, Jefferson County, IN, Jennings County, IN, Johnson County, IN, Knox County, IN, Lawrence County, IN, Martin County, IN, Monroe County, IN, Morgan County, IN, Orange County, IN, Owen County, IN, Perry County, IN, Pike County, IN, Posey County, IN, Rush County, IN, Scott County, IN, Shelby County, IN, Spencer County, IN, Sullivan County, IN, Vanderburgh County, IN, Vigo County, IN, Warrick County, IN, Washington County, IN, Breckinridge County, KY, Bullitt County, KY, Butler County, KY, Crittenden County, KY, Daviess County, KY, Edmonson County, KY, Grayson County, KY, Hancock County, KY, Hardin County, KY, Henderson County, KY, Hopkins County, KY, Jefferson County, KY, Livingston County, KY, McLean County, KY, Meade County, KY, Muhlenberg County, KY, Ohio County, KY, Oldham County, KY, Trimble County, KY, Union County, KY, Webster County, KY

The radar

The Evansville,IN radar (KVWX), 71 km from the middle of the area, began a volume at 04:08 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
30%
One or more EF2 to EF5 tornadoes
10%
Ten or more severe wind reports
20%
One or more gusts of 65 knots or more
5%
Ten or more severe hail reports
30%
One or more hailstones of 2 inches or more
5%
Six or more combined severe hail and wind reports
50%

Warnings issued inside it

3 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.

IssuedProductOfficeCountiesLasted
Jun 11, 1:33 AM EDTFlash Flood WarningPAHPosey3 hr
Jun 11, 1:38 AM EDTSevere Thunderstorm WarningLMKBarren, Edmonson, Hart, Warren14 min
Jun 11, 3:51 AM EDTSevere Thunderstorm WarningLMKBullitt, Nelson24 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

Lincoln, IL (KILX), launched 00:00Z, 4.1 hours before the alert went out and 216 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.

Skew-T log-pSkew-T log-p diagram, Lincoln, IL at 00:00Z on 2009-06-11Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 729 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Lincoln, IL at 00:00Z on 2009-06-11The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 32 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
729 J/kg
Mixed-layer CIN
-30 J/kg
Mixed-layer LCL
1199 m above ground
0-6 km bulk shear
39 kt
0-1 km storm-relative helicity
32 m²/s²
0-3 km storm-relative helicity
111 m²/s²
Significant tornado parameter
0.2
Supercell composite
2.4

Open this sounding in Storm Lab

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jun 10, 8:10 PM EDTMesoscale DiscussionSPCAlexander, Bond, Calhoun, Clay, Clinton, Effingham and 25 more65 min
Jun 10, 8:46 PM EDTTornado WatchSPCAlexander, Bond, Calhoun, Champaign, Christian, Clark and 51 more6 hr
Jun 10, 9:58 PM EDTMesoscale DiscussionSPCBond, Calhoun, Christian, Clark, Clay, Clinton and 36 more62 min
Jun 11, 2:00 PM EDTMesoscale DiscussionSPCBond, Clay, Effingham, Fayette, Macoupin, Montgomery60 min
Jun 11, 4:07 PM EDTMesoscale DiscussionSPCClark, Clay, Crawford, Edgar, Edwards, Effingham and 10 more53 min
Jun 11, 4:42 PM EDTMesoscale DiscussionSPCClark, Clay, Crawford, Edgar, Edwards, Effingham and 10 more33 min
Jun 11, 5:47 PM EDTTornado WatchSPCEdwards, Gallatin, Hamilton, Hardin, Saline, Wabash and 2 more6 hr
Jun 11, 7:02 PM EDTMesoscale DiscussionSPCAlexander, Hardin, Massac, Pope, Pulaski58 min
Jun 11, 4:15 AM EDTMesoscale DiscussionSPCClark, Crawford, Dubois, Floyd, Harrison, Jefferson and 7 more60 min
Jun 11, 8:54 AM EDTMesoscale DiscussionSPCAllen, Simpson66 min
Jun 11, 12:18 PM EDTSevere Thunderstorm WatchSPCBell, Clay, Harlan, Knox, Laurel, Leslie and 6 more8 hr
Jun 11, 2:55 PM EDTMesoscale DiscussionSPCBell, Breathitt, Clay, Floyd, Harlan, Knott and 7 more65 min

Nearby

Tornado Watches in Indiana, 2009Tornado Watches in Kentucky, 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.