Alert archive / Indiana / Severe Thunderstorm Watches in 2014

Severe Thunderstorm Watch 443

July 26, 201417 counties in Illinois; 53 counties in Indiana

The Storm Prediction Center issued this severe thunderstorm watch at Jul 26, 2014, 5:40 PM CDT for 17 counties in Illinois; 53 counties in Indiana. It was in force for 5 hr.

The area

The outline as issued.

The facts

Issued: Jul 26, 2014, 5:40 PM CDT (22:40 UTC)
Expired: Jul 26, 2014, 10:14 PM CDT
In force: 5 hr
Issued by: the Storm Prediction Center
Largest hail expected: 2 in
Strongest gust expected: 65 kt

All 70 counties

Clark County, IL, Clay County, IL, Crawford County, IL, Cumberland County, IL, Edwards County, IL, Effingham County, IL, Franklin County, IL, Gallatin County, IL, Hamilton County, IL, Jasper County, IL, Jefferson County, IL, Lawrence County, IL, Richland County, IL, Saline County, IL, Wabash County, IL, Wayne County, IL, White County, IL, Bartholomew County, IN, Boone County, IN, Brown County, IN, Clark County, IN, Clay County, IN, Clinton County, IN, Crawford County, IN, Daviess County, IN, Decatur County, IN, Delaware County, IN, Dubois County, IN, Floyd County, IN, Fountain County, IN, Gibson County, IN, Greene County, IN, Hamilton County, IN, Hancock County, IN, Harrison County, IN, Hendricks County, IN, Henry County, IN, Jackson County, IN, Jefferson County, IN, Jennings County, IN, Johnson County, IN, Knox County, IN, Lawrence County, IN, Madison County, IN, Marion County, IN, Martin County, IN, Monroe County, IN, Montgomery County, IN, Morgan County, IN, Orange County, IN, Owen County, IN, Parke County, IN, Perry County, IN, Pike County, IN, Posey County, IN, Putnam County, IN, Randolph County, IN, Rush County, IN, Scott County, IN, Shelby County, IN, Spencer County, IN, Sullivan County, IN, Tippecanoe County, IN, Tipton County, IN, Vanderburgh County, IN, Vermillion County, IN, Vigo County, IN, Warren County, IN, Warrick County, IN, Washington County, IN

The radar

The Evansville,IN radar (KVWX), 72 km from the middle of the area, began a volume at 22:40 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: 10%
Ten or more severe wind reports: 60%
One or more gusts of 65 knots or more: 30%
Ten or more severe hail reports: 30%
One or more hailstones of 2 inches or more: 30%
Six or more combined severe hail and wind reports: 90%

Warnings issued inside it

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

Issued	Product	Office	Counties	Lasted
Jul 26, 6:06 PM CDT	Severe Thunderstorm Warning	IND	Fountain, Montgomery, Parke, Putnam, Vermillion	54 min
Jul 26, 6:14 PM CDT	Severe Thunderstorm Warning	PAH	Jefferson, Wayne	46 min
Jul 26, 6:50 PM CDT	Severe Thunderstorm Warning	ILX	Lawrence, Richland	25 min
Jul 26, 7:16 PM CDT	Severe Thunderstorm Warning	PAH	Hamilton, Jefferson	44 min
Jul 26, 7:49 PM CDT	Severe Thunderstorm Warning	PAH	Franklin, Hamilton	41 min
Jul 26, 7:59 PM CDT	Severe Thunderstorm Warning	PAH	Pike, Spencer, Warrick	46 min
Jul 26, 8:20 PM CDT	Severe Thunderstorm Warning	LMK	Crawford, Harrison, Perry	30 min
Jul 26, 8:46 PM CDT	Severe Thunderstorm Warning	LMK	Floyd, Harrison	39 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 12:00Z, 10.7 hours before the alert went out and 176 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 1417 J/kg
Mixed-layer CIN: -292 J/kg
Mixed-layer LCL: 806 m above ground
0-6 km bulk shear: 36 kt
0-1 km storm-relative helicity: 236 m²/s²
0-3 km storm-relative helicity: 323 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 8.8

Open this sounding in Storm Lab

SPC that day

Everything else SPC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jul 26, 3:20 PM CDT	Mesoscale Discussion	SPC	Bond, Brown, Cass, Christian, Clark, Clay and 38 more	115 min
Jul 26, 1:41 PM CDT	Mesoscale Discussion	SPC	Adams, Allen, Blackford, DeKalb, Huntington, Jay and 6 more	64 min
Jul 26, 2:29 PM CDT	Severe Thunderstorm Watch	SPC	Adams, Allen, Huntington, Jay, Wells, Whitley	3 hr

Nearby

Severe Thunderstorm Watches in Indiana, 2014 Severe Thunderstorm Watches in Illinois, 2014 Every severe thunderstorm watch in 2014

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.