Alert archive / Indiana / Severe Thunderstorm Watches in 2012
Severe Thunderstorm Watch 55
The Storm Prediction Center issued this severe thunderstorm watch at Mar 2, 2012, 5:52 AM CST for 35 counties in Illinois; 39 counties in Indiana; 27 counties in Missouri. It was in force for 6 hr.
The area
The outline as issued.
The facts
- Issued
- Mar 2, 2012, 5:52 AM CST (11:52 UTC)
- Expired
- Mar 2, 2012, 12:00 PM CST
- In force
- 6 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 2 in
- Strongest gust expected
- 60 kt
All 101 counties
Bond County, IL, Calhoun County, IL, Champaign County, IL, Christian County, IL, Clark County, IL, Clay County, IL, Clinton County, IL, Coles County, IL, Crawford County, IL, Cumberland County, IL, Douglas County, IL, Edgar County, IL, Effingham County, IL, Fayette County, IL, Greene County, IL, Jasper County, IL, Jersey County, IL, Lawrence County, IL, Macon County, IL, Macoupin County, IL, Madison County, IL, Marion County, IL, Monroe County, IL, Montgomery County, IL, Morgan County, IL, Moultrie County, IL, Piatt County, IL, Randolph County, IL, Richland County, IL, Saint Clair County, IL, Sangamon County, IL, Scott County, IL, Shelby County, IL, Vermilion County, IL, Washington County, IL, Bartholomew County, IN, Boone County, IN, Brown County, IN, Carroll County, IN, Clay County, IN, Clinton County, IN, Daviess County, IN, Decatur County, IN, Delaware County, IN, Fountain County, IN, Greene County, IN, Hamilton County, IN, Hancock County, IN, Hendricks County, IN, Henry County, IN, Howard County, IN, Jackson 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, Owen County, IN, Parke County, IN, Putnam County, IN, Randolph County, IN, Rush County, IN, Shelby County, IN, Sullivan County, IN, Tippecanoe County, IN, Tipton County, IN, Vermillion County, IN, Vigo County, IN, Warren County, IN, Callaway County, MO, Camden County, MO, City of Saint Louis, MO, Cole County, MO, Crawford County, MO, Dallas County, MO, Dent County, MO, Franklin County, MO, Gasconade County, MO, Jefferson County, MO, Laclede County, MO, Lincoln County, MO, Maries County, MO, Miller County, MO, Montgomery County, MO, Osage County, MO, Phelps County, MO, Pulaski County, MO, Saint Charles County, MO, Saint Francois County, MO, Saint Louis County, MO, Sainte Genevieve County, MO, Texas County, MO, Warren County, MO, Washington County, MO, Webster County, MO, Wright County, MO
The radar
The St Louis radar (KLSX), 44 km from the middle of the area, began a volume at 11:54 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
- 20%
- Ten or more severe hail reports
- 60%
- One or more hailstones of 2 inches or more
- 40%
- Six or more combined severe hail and wind reports
- 80%
Warnings issued inside it
23 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 2, 5:56 AM CST | Severe Thunderstorm Warning | LSX | Calhoun, Jersey, Macoupin, Madison | 49 min |
| Mar 2, 5:59 AM CST | Severe Thunderstorm Warning | LSX | Callaway | 28 min |
| Mar 2, 6:36 AM CST | Severe Thunderstorm Warning | LSX | Bond, Fayette, Macoupin, Madison, Montgomery | 39 min |
| Mar 2, 6:36 AM CST | Severe Thunderstorm Warning | LSX | Lincoln, Montgomery, Pike | 39 min |
| Mar 2, 7:07 AM CST | Severe Thunderstorm Warning | LSX | Calhoun, Pike | 30 min |
| Mar 2, 7:14 AM CST | Severe Thunderstorm Warning | LSX | Bond, Fayette, Montgomery | 25 min |
| Mar 2, 7:20 AM CST | Severe Thunderstorm Warning | ILX | Christian, Coles, Cumberland, Effingham, Moultrie, Shelby | 40 min |
| Mar 2, 8:00 AM CST | Severe Thunderstorm Warning | ILX | Clark, Coles, Cumberland, Douglas, Edgar, Moultrie and 1 more | 45 min |
| Mar 2, 8:22 AM CST | Severe Thunderstorm Warning | ILX | Clark, Edgar | 38 min |
| Mar 2, 8:31 AM CST | Severe Thunderstorm Warning | IND | Clay, Parke, Vermillion, Vigo | 44 min |
| Mar 2, 8:42 AM CST | Severe Thunderstorm Warning | ILX | Edgar | 33 min |
| Mar 2, 8:58 AM CST | Severe Thunderstorm Warning | IND | Clay, Fountain, Montgomery, Parke, Putnam | 47 min |
| Mar 2, 9:25 AM CST | Severe Thunderstorm Warning | IND | Boone, Hendricks, Montgomery, Morgan, Putnam | 50 min |
| Mar 2, 9:29 AM CST | Severe Thunderstorm Warning | IND | Bartholomew, Brown, Jackson, Lawrence | 31 min |
| Mar 2, 9:46 AM CST | Severe Thunderstorm Warning | IND | Boone, Hamilton, Hancock, Hendricks, Johnson, Madison and 3 more | 44 min |
| Mar 2, 9:49 AM CST | Severe Thunderstorm Warning | LSX | Clinton, Madison, Saint Clair | 41 min |
| Mar 2, 10:01 AM CST | Severe Thunderstorm Warning | IND | Boone, Hamilton, Hancock, Hendricks, Johnson, Madison and 5 more | 44 min |
| Mar 2, 10:10 AM CST | Severe Thunderstorm Warning | LSX | Bond, Clinton, Fayette | 50 min |
| Mar 2, 11:12 AM CST | Severe Thunderstorm Warning | LSX | Fayette, Marion | 16 min |
| Mar 2, 11:22 AM CST | Severe Thunderstorm Warning | ILX | Clay, Effingham, Jasper | 26 min |
| Mar 2, 11:29 AM CST | Severe Thunderstorm Warning | LSX | Clinton, Randolph, Washington | 31 min |
| Mar 2, 11:30 AM CST | Severe Thunderstorm Warning | ILX | Clark, Coles, Edgar | 30 min |
| Mar 2, 11:41 AM CST | Severe Thunderstorm Warning | LSX | Marion | 49 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, 11.9 hours before the alert went out and 197 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 2012 m above ground
- 0-6 km bulk shear
- 70 kt
- 0-1 km storm-relative helicity
- 130 m²/s²
- 0-3 km storm-relative helicity
- 380 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 |
|---|---|---|---|---|
| Mar 2, 1:46 AM CST | Mesoscale Discussion | SPC | Jackson, Monroe, Perry, Randolph, Saint Clair | 89 min |
| Mar 2, 2:07 AM CST | Severe Thunderstorm Watch | SPC | Calhoun, Jersey, Madison, Monroe, Randolph, Saint Clair | 5 hr |
| Mar 2, 4:25 AM CST | Mesoscale Discussion | SPC | Bond, Calhoun, Christian, Clark, Clay, Clinton and 30 more | 95 min |
| Mar 2, 7:50 AM CST | Mesoscale Discussion | SPC | Clark, Clay, Coles, Crawford, Cumberland, Douglas and 12 more | 85 min |
| Mar 2, 9:22 AM CST | Mesoscale Discussion | SPC | Alexander, Crawford, Edwards, Franklin, Gallatin, Hamilton and 13 more | 113 min |
| Mar 2, 9:54 AM CST | Tornado Watch | SPC | Alexander, Bond, Champaign, Christian, Clark, Clay and 41 more | 6 hr |
| Mar 2, 10:02 AM CST | Mesoscale Discussion | SPC | Champaign, Clark, Coles, Crawford, Cumberland, Douglas and 3 more | 88 min |
| Mar 2, 11:06 AM CST | Mesoscale Discussion | SPC | Boone, Carroll, Hancock, Henderson, Henry, Jo Daviess and 9 more | 4 hr |
| Mar 2, 12:05 PM CST | Mesoscale Discussion | SPC | Gallatin, Hardin, Johnson, Massac, Pope, Saline and 2 more | 85 min |
| Mar 2, 3:40 AM CST | Mesoscale Discussion | SPC | Crawford, Dubois, Harrison, Perry, Pike, Spencer and 1 more | 65 min |
| Mar 2, 10:30 AM CST | Mesoscale Discussion | SPC | Adams, Blackford, Dearborn, Delaware, Fayette, Franklin and 7 more | 90 min |
| Mar 2, 12:02 PM CST | Tornado Watch | SPC | Bartholomew, Brown, Clark, Crawford, Dearborn, Decatur and 25 more | 8 hr |
| Mar 2, 2:35 PM CST | Mesoscale Discussion | SPC | Clark, Dearborn, Floyd, Franklin, Harrison, Jefferson and 4 more | 85 min |
| Mar 2, 10:28 AM CST | Mesoscale Discussion | SPC | Dunklin, Pemiscot | 62 min |
Nearby
Severe Thunderstorm Watches in Indiana, 2012Severe Thunderstorm Watches in Illinois, 2012Severe Thunderstorm Watches in Missouri, 2012Every severe thunderstorm watch in 2012
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.