Alert archive / Indiana / Severe Thunderstorm Watches in 2013
Severe Thunderstorm Watch 324
The Storm Prediction Center issued this severe thunderstorm watch at Jun 18, 2013, 1:53 PM CDT for 23 counties in Illinois; 30 counties in Indiana. It was in force for 6 hr.
The area
The outline as issued.
The facts
- Issued
- Jun 18, 2013, 1:53 PM CDT (18:53 UTC)
- Expired
- Jun 18, 2013, 7:59 PM CDT
- In force
- 6 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 1.5 in
- Strongest gust expected
- 60 kt
All 53 counties
Bond County, IL, Christian County, IL, Clark County, IL, Clay County, IL, Coles County, IL, Crawford County, IL, Cumberland County, IL, Douglas County, IL, Edgar County, IL, Edwards County, IL, Effingham County, IL, Fayette County, IL, Jasper County, IL, Lawrence County, IL, Macon County, IL, Marion County, IL, Montgomery County, IL, Moultrie County, IL, Richland County, IL, Sangamon County, IL, Shelby County, IL, Wabash County, IL, Wayne County, IL, 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, Scott County, IN, Shelby County, IN, Sullivan County, IN, Vigo County, IN, Washington County, IN
The radar
The Evansville,IN radar (KVWX), 112 km from the middle of the area, began a volume at 18:56 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
- 10%
- One or more EF2 to EF5 tornadoes
- 2%
- Ten or more severe wind reports
- 30%
- One or more gusts of 65 knots or more
- 10%
- Ten or more severe hail reports
- 40%
- One or more hailstones of 2 inches or more
- 20%
- Six or more combined severe hail and wind reports
- 70%
Warnings issued inside it
7 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 18, 2:06 PM CDT | Severe Thunderstorm Warning | ILX | Macon | 39 min |
| Jun 18, 3:22 PM CDT | Flash Flood Warning | ILX | Moultrie, Shelby | 4 hr |
| Jun 18, 4:08 PM CDT | Severe Thunderstorm Warning | ILX | Crawford, Lawrence | 52 min |
| Jun 18, 4:25 PM CDT | Severe Thunderstorm Warning | IND | Knox | 50 min |
| Jun 18, 4:32 PM CDT | Severe Thunderstorm Warning | ILX | Lawrence | 43 min |
| Jun 18, 4:48 PM CDT | Severe Thunderstorm Warning | IND | Daviess, Knox | 42 min |
| Jun 18, 5:55 PM CDT | Severe Thunderstorm Warning | ILX | Macon, Moultrie, Piatt | 35 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, 6.9 hours before the alert went out and 111 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
- 976 J/kg
- Mixed-layer CIN
- -70 J/kg
- Mixed-layer LCL
- 873 m above ground
- 0-6 km bulk shear
- 19 kt
- 0-1 km storm-relative helicity
- 47 m²/s²
- 0-3 km storm-relative helicity
- 73 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 |
|---|---|---|---|---|
| Jun 18, 1:04 PM CDT | Mesoscale Discussion | SPC | Cass, Christian, Clark, Coles, Crawford, Cumberland and 11 more | 86 min |
| Jun 18, 5:38 PM CDT | Mesoscale Discussion | SPC | Christian, Clark, Clay, Coles, Crawford, Cumberland and 12 more | 67 min |
Nearby
Severe Thunderstorm Watches in Indiana, 2013Severe Thunderstorm Watches in Illinois, 2013Every severe thunderstorm watch in 2013
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.