Alert archive / Indiana / Mesoscale Discussions in 2012
Mesoscale Discussion 206
The Storm Prediction Center issued this mesoscale discussion at Mar 2, 2012, 10:02 AM CST for 9 counties in Illinois; 20 counties in Indiana. It was in force for 88 min.
The area
The outline as issued.
The facts
- Issued
- Mar 2, 2012, 10:02 AM CST (16:02 UTC)
- Expired
- Mar 2, 2012, 11:30 AM CST
- In force
- 88 min
- Issued by
- the Storm Prediction Center
All 29 counties
Champaign County, IL, Clark County, IL, Coles County, IL, Crawford County, IL, Cumberland County, IL, Douglas County, IL, Edgar County, IL, Jasper County, IL, Vermilion County, IL, Bartholomew County, IN, Boone County, IN, Brown County, IN, Clay County, IN, Fountain County, IN, Greene County, IN, Hendricks County, IN, Johnson County, IN, Marion County, IN, Monroe County, IN, Montgomery County, IN, Morgan County, IN, Owen County, IN, Parke County, IN, Putnam County, IN, Sullivan County, IN, Tippecanoe County, IN, Vermillion County, IN, Vigo County, IN, Warren County, IN
The radar
The Indianapolis radar (KIND), 104 km from the middle of the area, began a volume at 16:05 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.
The watches that followed
Watches SPC issued over any of the same counties within four hours of this discussion.
The nearest sounding before it
Lincoln, IL (KILX), launched 12:00Z, 4.0 hours before the alert went out and 114 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
- 1770 m above ground
- 0-6 km bulk shear
- 61 kt
- 0-1 km storm-relative helicity
- 76 m²/s²
- 0-3 km storm-relative helicity
- 163 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
953
ACUS11 KWNS 021603
SWOMCD
SPC MCD 021602
INZ000-ILZ000-021730-
MESOSCALE DISCUSSION 0206
NWS STORM PREDICTION CENTER NORMAN OK
1002 AM CST FRI MAR 02 2012
AREAS AFFECTED...PARTS OF E CNTRL IL...CNTRL INDIANA
CONCERNING...SEVERE THUNDERSTORM WATCH 55...
VALID 021602Z - 021730Z
THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH 55
CONTINUES.
PORTIONS OF WW HAVE ALREADY BEEN UPGRADED TO A TORNADO WATCH. AREAS
FARTHER TO THE NORTH AND EAST OF THE SEVERE THUNDERSTORM WATCH WILL
NEED TO BE MONITORED FOR ADDITIONAL WWS LATER THIS AFTERNOON.
AS THE DEEPENING SURFACE CYCLONE LIFTS NORTHEAST OF THE ST. LOUIS MO
AREA INTO NORTHEAST INDIANA BETWEEN NOW AND 19-21Z...AN AREA OF
ENHANCED WARM ADVECTION ALONG A NORTHEASTWARD ADVANCING WARM FRONT
TO ITS EAST MAY BECOME OF FOCUS FOR INCREASING SEVERE POTENTIAL
DURING THE NEXT FEW HOURS. THIS MAY IMPACT THE MATTOON/CHARLESTON
AND TERRE HAUTE AREAS AS EARLY AS 18Z-19Z...BEFORE DEVELOPING
NORTHEASTWARD INTO CENTRAL INDIANA. RAPID BOUNDARY LAYER
DESTABILIZATION IN THE PRESENCE OF STRONG SHEAR...INCLUDING LARGE
CLOCKWISE CURVED LOW-LEVEL HODOGRAPHS... WILL SUPPORT INCREASING
POTENTIAL FOR TORNADIC DEVELOPMENT...INCLUDING THE RISK FOR
PARTICULARLY STRONG AND DAMAGING TORNADOES...IN ADDITION TO A
CONTINUING RISK FOR LARGE HAIL.
..KERR.. 03/02/2012
...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT...
ATTN...WFO...IWX...IND...LOT...ILX...
LAT...LON 39378869 40168828 40658714 40048614 39148581 38968688
38978824 39378869SPC 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, 5:52 AM CST | Severe Thunderstorm Watch | SPC | Bond, Calhoun, Champaign, Christian, Clark, Clay and 29 more | 6 hr |
| 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, 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 |
Nearby
Mesoscale Discussions in Indiana, 2012Mesoscale Discussions in Illinois, 2012Every mesoscale discussion 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.