Alert archive / Indiana / Mesoscale Discussions in 2011
Mesoscale Discussion 2313
The Storm Prediction Center issued this mesoscale discussion at Nov 14, 2011, 11:24 AM CST for 20 counties in Illinois; 59 counties in Indiana; 14 counties in Ohio. It was in force for 96 min.
The area
The outline as issued.
The facts
- Issued
- Nov 14, 2011, 11:24 AM CST (17:24 UTC)
- Expired
- Nov 14, 2011, 1:00 PM CST
- In force
- 96 min
- Issued by
- the Storm Prediction Center
All 93 counties
Champaign County, IL, Clark County, IL, Clay County, IL, Coles County, IL, Crawford County, IL, Cumberland County, IL, Douglas County, IL, Edgar County, IL, Effingham County, IL, Fayette County, IL, Ford County, IL, Iroquois County, IL, Jasper County, IL, Lawrence County, IL, Macon County, IL, Moultrie County, IL, Piatt County, IL, Richland County, IL, Shelby County, IL, Vermilion County, IL, Adams County, IN, Allen County, IN, Bartholomew County, IN, Benton County, IN, Blackford County, IN, Boone County, IN, Brown County, IN, Carroll County, IN, Cass County, IN, Clay County, IN, Clinton County, IN, Decatur County, IN, DeKalb County, IN, Delaware County, IN, Fayette County, IN, Fountain County, IN, Franklin County, IN, Fulton County, IN, Grant County, IN, Greene County, IN, Hamilton County, IN, Hancock County, IN, Hendricks County, IN, Henry County, IN, Howard County, IN, Huntington County, IN, Jasper County, IN, Jay County, IN, Johnson County, IN, Knox County, IN, Kosciusko County, IN, Lawrence County, IN, Madison County, IN, Marion County, IN, Miami County, IN, Monroe County, IN, Montgomery County, IN, Morgan County, IN, Newton County, IN, Noble County, IN, Owen County, IN, Parke County, IN, Pulaski County, IN, Putnam County, IN, Randolph County, IN, Rush County, IN, Shelby County, IN, Sullivan County, IN, Tippecanoe County, IN, Tipton County, IN, Union County, IN, Vermillion County, IN, Vigo County, IN, Wabash County, IN, Warren County, IN, Wayne County, IN, Wells County, IN, White County, IN, Whitley County, IN, Allen County, OH, Auglaize County, OH, Darke County, OH, Defiance County, OH, Hancock County, OH, Hardin County, OH, Henry County, OH, Mercer County, OH, Miami County, OH, Paulding County, OH, Preble County, OH, Putnam County, OH, Shelby County, OH, Van Wert County, OH
The radar
The Indianapolis radar (KIND), 25 km from the middle of the area, began a volume at 17:25 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, 5.4 hours before the alert went out and 185 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
- 1725 m above ground
- 0-6 km bulk shear
- 95 kt
- 0-1 km storm-relative helicity
- 161 m²/s²
- 0-3 km storm-relative helicity
- 311 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
434
ACUS11 KWNS 141724
SWOMCD
SPC MCD 141724
OHZ000-INZ000-ILZ000-141900-
MESOSCALE DISCUSSION 2313
NWS STORM PREDICTION CENTER NORMAN OK
1124 AM CST MON NOV 14 2011
AREAS AFFECTED...E CNTRL IL INTO CNTRL INDIANA
CONCERNING...SEVERE POTENTIAL...TORNADO WATCH LIKELY
VALID 141724Z - 141900Z
STORMS ARE EXPECTED TO INITIATE IN THE NEXT 1-2 HOURS AND A TORNADO
WATCH WILL LIKELY BE ISSUED BY 18Z.
SURFACE ANALYSIS SHOWS A LOW CENTERED OVER CNTRL IL...WITH A WARM
FRONT EXTENDING EWD ACROSS NRN INDIANA AND INTO NWRN OH. PRESSURE
FALLS HAVE ACCELERATED ALONG THE N OF THE WARM FRONT...WHICH IS
GRADUALLY SHIFTING NWD WITH LOW 60S DEWPOINTS NOW EXTENDING N OF
IND.
VISIBLE SATELLITE IMAGERY SHOWS BOUNDARY LAYER CU FIELDS NOW
INCREASING NEAR THE LOW CENTER/WARM FRONT INTERSECTION...AND ALSO
BEGINNING TO DEVELOP A BIT SWWD ALONG THE DEVELOPING COLD FRONT.
OBJECTIVE ANALYSIS INDICATES THAT MOST OF THE CIN HAS ERODED AS
WELL. WITH CONTINUED FORCING AND POCKETS OF HEATING...STORMS SHOULD
INITIATE SOON OVER CNTRL AND E CNTRL IL...MOVING QUICKLY EWD CROSS
INDIANA AND INTO WRN OH LATER TODAY.
DEEP LAYER WIND FIELDS ARE VERY STRONG...AND EFFECTIVE SRH VALUES
ARE WELL IN EXCESS OF 300 M2/S2. WHILE SOME UPDRAFTS MAY STRUGGLE TO
REMAIN UPRIGHT INITIALLY...WITH TIME THEY ARE EXPECTED TO FORM INTO
MATURE SUPERCELLS CAPABLE OF TORNADOES AND DAMAGING WIND. A STORM OR
TWO MAY RIDE RIGHT ALONG THE WARM FRONT...WITH A CORRIDOR OF
PARTICULARLY DAMAGING WINDS AND/OR TORNADOES POSSIBLE THERE.
..JEWELL.. 11/14/2011
...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT...
ATTN...WFO...CLE...ILN...IWX...IND...PAH...LOT...ILX...LSX...
LAT...LON 38898904 39828912 40998837 41238687 41598438 41518376
40938348 40008399 39538461 39048568 38838631 38698734
38578833 38898904SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Nov 14, 4:12 AM CST | Mesoscale Discussion | SPC | Clark, Coles, Cumberland, Edgar, Shelby | 63 min |
| Nov 14, 11:41 AM CST | Tornado Watch | SPC | Champaign, Christian, Clark, Clay, Coles, Crawford and 18 more | 7 hr |
| Nov 14, 12:27 PM CST | Mesoscale Discussion | SPC | Alexander, Edwards, Franklin, Gallatin, Hamilton, Hardin and 14 more | 2 hr |
| Nov 14, 3:04 PM CST | Tornado Watch | SPC | Alexander, Edwards, Franklin, Gallatin, Hamilton, Hardin and 15 more | 5 hr |
| Nov 14, 3:38 PM CST | Mesoscale Discussion | SPC | Clark, Clay, Coles, Crawford, Cumberland, Edgar and 3 more | 2 hr |
| Nov 14, 5:32 PM CST | Mesoscale Discussion | SPC | Alexander, Clark, Clay, Crawford, Cumberland, Edgar and 23 more | 88 min |
| Nov 14, 1:57 PM CST | Mesoscale Discussion | SPC | Ashland, Carroll, Champaign, Coshocton, Crawford, Delaware and 22 more | 63 min |
| Nov 14, 2:29 PM CST | Tornado Watch | SPC | Ashland, Ashtabula, Carroll, Columbiana, Coshocton, Crawford and 26 more | 6 hr |
Nearby
Mesoscale Discussions in Indiana, 2011Mesoscale Discussions in Illinois, 2011Mesoscale Discussions in Ohio, 2011Every mesoscale discussion in 2011
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.