Alert archive / Indiana / Mesoscale Discussions in 2016
Mesoscale Discussion 607
The Storm Prediction Center issued this mesoscale discussion at May 11, 2016, 3:39 PM CDT for Lawrence County, Wabash County, Illinois; 40 counties in Indiana. It was in force for 66 min.
The area
The outline as issued.
The facts
- Issued
- May 11, 2016, 3:39 PM CDT (20:39 UTC)
- Expired
- May 11, 2016, 4:45 PM CDT
- In force
- 66 min
- Issued by
- the Storm Prediction Center
- Chance of a watch
- 95%
All 42 counties
Lawrence County, IL, Wabash County, IL, Bartholomew County, IN, Boone County, IN, Brown County, IN, Clay County, IN, Crawford County, IN, Daviess 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, 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, Pike County, IN, Putnam County, IN, Rush County, IN, Scott County, IN, Shelby County, IN, Sullivan County, IN, Vermillion County, IN, Vigo County, IN, Warrick County, IN, Washington County, IN
The radar
The Indianapolis radar (KIND), 99 km from the middle of the area, began a volume at 20:42 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, 8.7 hours before the alert went out and 200 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
- 905 m above ground
- 0-6 km bulk shear
- 26 kt
- 0-1 km storm-relative helicity
- 29 m²/s²
- 0-3 km storm-relative helicity
- 120 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
672 ACUS11 KWNS 112040 SWOMCD SPC MCD 112039 INZ000-KYZ000-ILZ000-112145- MESOSCALE DISCUSSION 0607 NWS STORM PREDICTION CENTER NORMAN OK 0339 PM CDT WED MAY 11 2016 AREAS AFFECTED...CENTRAL/SOUTHERN INDIANA CONCERNING...SEVERE POTENTIAL...WATCH LIKELY VALID 112039Z - 112145Z PROBABILITY OF WATCH ISSUANCE...95 PERCENT SUMMARY...SEVERE THREAT WILL INCREASE ACROSS CENTRAL/SOUTHERN INDIANA OVER THE NEXT FEW HOURS. LARGE HAIL AND DAMAGING WINDS ARE POSSIBLE. WW WILL BE REQUIRED BY 21Z. DISCUSSION...MATURING CLUSTER OF SEVERE THUNDERSTORMS OVER SCNTRL IL IS GRADUALLY DEVELOPING AN EXPANDING PRECIP SHIELD AND COLD POOL. THIS EVOLUTION SHOULD RESULT IN AN EWD SURGE TO CONVECTION OVER THE NEXT HOUR OR SO AS FORWARD PROPAGATION INCREASES. ANOTHER SEVERE STORM OVER ECNTRL IL WILL SOON MOVE EAST OF WW 167. FOR THESE REASONS A NEW SEVERE THUNDERSTORM WATCH WILL BE ISSUED SOON. ..DARROW/HART.. 05/11/2016 ...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT... ATTN...WFO...LMK...IND...PAH...ILX... LAT...LON 38048797 40378732 40148527 38138583 38048797
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 11, 11:20 AM CDT | Mesoscale Discussion | SPC | Bond, Calhoun, Christian, Clay, Clinton, Effingham and 11 more | 55 min |
| May 11, 12:10 PM CDT | Severe Thunderstorm Watch | SPC | Bond, Calhoun, Cass, Champaign, Christian, Clark and 48 more | 12 hr |
| May 11, 2:19 PM CDT | Mesoscale Discussion | SPC | Bond, Brown, Calhoun, Cass, Christian, Clark and 33 more | 56 min |
| May 11, 5:30 PM CDT | Mesoscale Discussion | SPC | Gallatin, Hardin | 2 hr |
| May 11, 6:30 PM CDT | Severe Thunderstorm Watch | SPC | Bond, Calhoun, Clinton, Franklin, Gallatin, Greene and 19 more | 7 hr |
| May 11, 3:55 PM CDT | Severe Thunderstorm Watch | SPC | Bartholomew, Brown, Clay, Crawford, Daviess, Dubois and 25 more | 5 hr |
Nearby
Mesoscale Discussions in Indiana, 2016Mesoscale Discussions in Illinois, 2016Every mesoscale discussion in 2016
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.