Alert archive / Indiana / Mesoscale Discussions in 2013

Mesoscale Discussion 920

June 1, 20134 states

The Storm Prediction Center issued this mesoscale discussion at Jun 1, 2013, 1:13 AM CDT for 4 states. It was in force for 2 hr.

The area

The outline as issued.

The facts

Issued: Jun 1, 2013, 1:13 AM CDT (06:13 UTC)
Expired: Jun 1, 2013, 3:15 AM CDT
In force: 2 hr
Issued by: the Storm Prediction Center

All 89 counties

Crawford County, IL, Lawrence County, IL, Wabash County, IL, Adams County, IN, Allen County, IN, Bartholomew County, IN, Blackford County, IN, Boone County, IN, Brown County, IN, Clark County, IN, Clay County, IN, Crawford County, IN, Daviess County, IN, Dearborn County, IN, Decatur County, IN, DeKalb County, IN, Delaware County, IN, Dubois County, IN, Elkhart County, IN, Fayette County, IN, Floyd County, IN, Franklin County, IN, Fulton County, IN, Gibson 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, Jackson County, IN, Jay County, IN, Jefferson County, IN, Jennings County, IN, Johnson County, IN, Knox County, IN, Kosciusko County, IN, LaGrange County, IN, Lawrence County, IN, Madison County, IN, Marion County, IN, Marshall County, IN, Martin County, IN, Miami County, IN, Monroe County, IN, Morgan County, IN, Noble County, IN, Orange County, IN, Owen County, IN, Pike County, IN, Putnam County, IN, Randolph County, IN, Ripley County, IN, Rush County, IN, Saint Joseph County, IN, Scott County, IN, Shelby County, IN, Steuben County, IN, Sullivan County, IN, Tipton County, IN, Union County, IN, Vigo County, IN, Wabash County, IN, Washington County, IN, Wayne County, IN, Wells County, IN, Whitley County, IN, Oldham County, KY, Trimble County, KY, Allen County, OH, Auglaize County, OH, Butler County, OH, Darke County, OH, Defiance County, OH, Fulton County, OH, Hancock County, OH, Henry County, OH, Mercer County, OH, Miami County, OH, Montgomery County, OH, Paulding County, OH, Preble County, OH, Putnam County, OH, Shelby County, OH, Van Wert County, OH, Williams County, OH, Wood County, OH

The radar

The Indianapolis radar (KIND), 84 km from the middle of the area, began a volume at 06:16 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 nearest sounding before it

Cncnati-Daytn, OH (KILN), launched 00:00Z, 6.2 hours before the alert went out and 212 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.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 39 J/kg
Mixed-layer CIN: -10 J/kg
Mixed-layer LCL: 556 m above ground
0-6 km bulk shear: 25 kt
0-1 km storm-relative helicity: 238 m²/s²
0-3 km storm-relative helicity: 353 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

324 
ACUS11 KWNS 010614
SWOMCD
SPC MCD 010613 
OHZ000-MIZ000-INZ000-KYZ000-ILZ000-010815-

MESOSCALE DISCUSSION 0920
NWS STORM PREDICTION CENTER NORMAN OK
0113 AM CDT SAT JUN 01 2013

AREAS AFFECTED...NWRN OH/MUCH OF INDIANA

CONCERNING...TORNADO WATCH 267...

VALID 010613Z - 010815Z

THE SEVERE WEATHER THREAT FOR TORNADO WATCH 267 CONTINUES.

SUMMARY...THREAT FOR DAMAGING WINDS AND AN ISOLATED TORNADO
CONTINUES TORNADO WATCH 267.

DISCUSSION...RADAR LOOP SHOWS AN ARCING LINE OF STORMS MOVING ENEWD
ACROSS INDIANA AT 30 TO 35 KT...THOUGH AN AIRMASS CONSISTING OF
ROUGHLY 500 TO 1000 J/KG MIXED-LAYER CAPE.  THE CONVECTIVE LINE
REMAINS WELL ORGANIZED...WITH A MESOLOW EVIDENT MOVING ACROSS NWRN
IN/SWRN LOWER MI/SRN LAKE MI ON THE NRN END OF THE LINE.

ALONG WITH THE POSSIBILITY OF AN ISOLATED TORNADO SPIN UP ALONG THE
LINE...MAIN SEVERE WEATHER POTENTIAL WILL BE DAMAGING WINDS OVER THE
NEXT COUPLE OF HOURS.

..GOSS.. 06/01/2013

...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT...

ATTN...WFO...CLE...ILN...DTX...LMK...IWX...IND...PAH...ILX...

LAT...LON   41698633 41888566 41928530 41688368 41148341 40118397
            38338549 38178650 38158785 38818795 39608726 40498625
            41128633 41468660 41698633

SPC that day

Everything else SPC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
May 31, 7:05 PM CDT	Mesoscale Discussion	SPC	Bond, Calhoun, Christian, Greene, Jersey, Macon and 5 more	85 min
May 31, 7:23 PM CDT	Tornado Watch	SPC	Champaign, Christian, Clark, Clay, Coles, Crawford and 12 more	6 hr
May 31, 8:46 PM CDT	Mesoscale Discussion	SPC	Bond, Clay, Clinton, Coles, Cumberland, Effingham and 16 more	59 min
May 31, 9:37 PM CDT	Tornado Watch	SPC	Alexander, Clinton, Edwards, Franklin, Gallatin, Hamilton and 19 more	6 hr
May 31, 9:47 PM CDT	Mesoscale Discussion	SPC	Iroquois	58 min
May 31, 10:11 PM CDT	Tornado Watch	SPC	Ford, Iroquois	5 hr
Jun 1, 1:51 AM CDT	Mesoscale Discussion	SPC	Alexander, Edwards, Franklin, Gallatin, Hamilton, Hardin and 14 more	114 min
Jun 1, 3:46 AM CDT	Mesoscale Discussion	SPC	Massac	29 min
Jun 1, 1:24 PM CDT	Mesoscale Discussion	SPC	Dearborn, Ohio, Switzerland	96 min
Jun 1, 5:05 PM CDT	Mesoscale Discussion	SPC	Bath, Bell, Breathitt, Clark, Clay, Clinton and 20 more	85 min

Nearby

Mesoscale Discussions in Indiana, 2013 Mesoscale Discussions in Ohio, 2013 Mesoscale Discussions in Illinois, 2013 Every mesoscale discussion 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.