Alert archive / Indiana / Tornado Watches in 2011

Tornado Watch 368

May 25, 201163 counties in Indiana; 4 counties in Michigan

The Storm Prediction Center issued this tornado watch at May 25, 2011, 9:50 AM EDT for 63 counties in Indiana; 4 counties in Michigan. It was in force for 9 hr.

The area

The outline as issued.

The facts

Issued: May 25, 2011, 9:50 AM EDT (13:50 UTC)
Expired: May 25, 2011, 6:45 PM EDT
In force: 9 hr
Issued by: the Storm Prediction Center
Largest hail expected: 2 in
Strongest gust expected: 60 kt

All 67 counties

Adams County, IN, Allen County, IN, Bartholomew County, IN, Blackford County, IN, Boone County, IN, Brown County, IN, Carroll County, IN, Cass County, IN, Clay County, IN, Clinton County, IN, Daviess County, IN, Decatur County, IN, DeKalb County, IN, Delaware County, IN, Elkhart County, IN, Fountain 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, Jackson County, IN, Jay County, IN, Jennings County, IN, Johnson County, IN, Knox County, IN, Kosciusko County, IN, LaGrange County, IN, LaPorte County, IN, Lawrence County, IN, Madison County, IN, Marion County, IN, Marshall County, IN, Martin County, IN, Miami County, IN, Monroe County, IN, Montgomery County, IN, Morgan County, IN, Noble County, IN, Owen County, IN, Parke County, IN, Pulaski County, IN, Putnam County, IN, Randolph County, IN, Rush County, IN, Saint Joseph County, IN, Shelby County, IN, Starke County, IN, Steuben County, IN, Sullivan County, IN, Tippecanoe County, IN, Tipton County, IN, Vermillion County, IN, Vigo County, IN, Wabash County, IN, Warren County, IN, Wells County, IN, White County, IN, Whitley County, IN, Berrien County, MI, Branch County, MI, Cass County, MI, Saint Joseph County, MI

The radar

The Northern Indiana radar (KIWX), 98 km from the middle of the area, began a volume at 13:52 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: 70%
One or more EF2 to EF5 tornadoes: 50%
Ten or more severe wind reports: 60%
One or more gusts of 65 knots or more: 40%
Ten or more severe hail reports: 40%
One or more hailstones of 2 inches or more: 30%
Six or more combined severe hail and wind reports: 90%

Warnings issued inside it

59 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.

Issued	Product	Office	Counties	Lasted
May 25, 10:22 AM EDT	Severe Thunderstorm Warning	IWX	Cass, Fulton, Marshall, Pulaski, Starke, White	29 min
May 25, 10:23 AM EDT	Severe Thunderstorm Warning	IND	Carroll, Clinton, Fountain, Montgomery, Tippecanoe, Warren	52 min
May 25, 11:00 AM EDT	Severe Thunderstorm Warning	IWX	Cass, Elkhart, Fulton, Grant, Kosciusko, Marshall and 5 more	60 min
May 25, 11:12 AM EDT	Severe Thunderstorm Warning	IND	Carroll, Clinton, Howard, Tippecanoe	33 min
May 25, 12:49 PM EDT	Severe Thunderstorm Warning	IND	Carroll, Clinton, Howard	26 min
May 25, 12:58 PM EDT	Severe Thunderstorm Warning	IWX	Allen, DeKalb, Noble, Whitley	32 min
May 25, 1:14 PM EDT	Severe Thunderstorm Warning	IND	Daviess, Knox	15 min
May 25, 1:36 PM EDT	Severe Thunderstorm Warning	IND	Clinton, Howard, Tipton	39 min
May 25, 1:37 PM EDT	Severe Thunderstorm Warning	IWX	Allen, DeKalb, Huntington, Whitley	38 min
May 25, 1:38 PM EDT	Severe Thunderstorm Warning	IND	Fountain, Tippecanoe, Vermillion, Warren	52 min
May 25, 1:51 PM EDT	Severe Thunderstorm Warning	IND	Carroll, Clinton, Fountain, Montgomery, Tippecanoe, Warren	54 min
May 25, 2:12 PM EDT	Severe Thunderstorm Warning	IND	Johnson, Marion, Morgan	48 min
May 25, 2:13 PM EDT	Severe Thunderstorm Warning	IWX	Allen, DeKalb, Huntington, Noble, Wells, Whitley	62 min
May 25, 2:15 PM EDT	Severe Thunderstorm Warning	IND	Daviess, Greene, Lawrence, Martin	45 min
May 25, 2:15 PM EDT	Tornado Warning	IND	Carroll, Tippecanoe	15 min
May 25, 2:24 PM EDT	Severe Thunderstorm Warning	IND	Carroll, Clinton, Howard, Tippecanoe	66 min
May 25, 2:27 PM EDT	Severe Thunderstorm Warning	IND	Daviess, Knox, Sullivan	48 min
May 25, 2:27 PM EDT	Tornado Warning	IND	Carroll, Howard	33 min
May 25, 2:29 PM EDT	Tornado Warning	IND	Clinton, Howard, Tipton	31 min
May 25, 2:35 PM EDT	Severe Thunderstorm Warning	IND	Hancock, Johnson, Marion, Shelby	40 min
May 25, 2:37 PM EDT	Tornado Warning	IND	Carroll, Clinton, Howard	23 min
May 25, 2:47 PM EDT	Flash Flood Warning	IWX	Adams, Allen, DeKalb, Wells	3 hr
May 25, 2:58 PM EDT	Severe Thunderstorm Warning	IND	Daviess, Greene, Knox, Martin	47 min
May 25, 2:59 PM EDT	Severe Thunderstorm Warning	IND	Carroll, Clinton, Howard	16 min
May 25, 3:02 PM EDT	Tornado Warning	IND	Daviess, Knox, Martin	28 min
May 25, 3:10 PM EDT	Tornado Warning	IND	Clinton, Hamilton, Howard, Madison, Tipton	35 min
May 25, 3:14 PM EDT	Severe Thunderstorm Warning	IND	Bartholomew, Jackson, Jennings	46 min
May 25, 3:15 PM EDT	Severe Thunderstorm Warning	IWX	Cass, Miami, Wabash	29 min
May 25, 3:26 PM EDT	Flash Flood Warning	IND	Daviess, Greene, Knox, Martin	3 hr
May 25, 3:26 PM EDT	Severe Thunderstorm Warning	IND	Daviess, Greene, Lawrence, Martin, Monroe, Owen	49 min
May 25, 3:33 PM EDT	Severe Thunderstorm Warning	IWX	Grant, Huntington, Wabash, Wells	57 min
May 25, 3:39 PM EDT	Tornado Warning	IWX	Grant, Huntington, Wells	24 min
May 25, 3:45 PM EDT	Flash Flood Warning	IND	Carroll, Clinton, Howard, Tippecanoe	6 hr
May 25, 3:47 PM EDT	Severe Thunderstorm Warning	IND	Fountain, Montgomery, Parke, Tippecanoe, Vermillion, Warren	43 min
May 25, 3:49 PM EDT	Severe Thunderstorm Warning	IND	Bartholomew, Brown, Jackson, Jennings, Johnson, Lawrence and 3 more	56 min
May 25, 4:15 PM EDT	Severe Thunderstorm Warning	IWX	Adams, Wells	29 min
May 25, 4:19 PM EDT	Tornado Warning	IWX	Allen	41 min
May 25, 4:25 PM EDT	Severe Thunderstorm Warning	IND	Fountain, Montgomery, Parke, Putnam, Vermillion, Vigo	50 min
May 25, 4:41 PM EDT	Tornado Warning	IND	Bartholomew, Decatur	49 min
May 25, 4:43 PM EDT	Flash Flood Warning	IND	Fountain, Montgomery, Parke, Tippecanoe, Vermillion	6 hr
May 25, 4:48 PM EDT	Severe Thunderstorm Warning	IND	Bartholomew, Decatur, Rush, Shelby	42 min
May 25, 5:24 PM EDT	Flash Flood Warning	IWX	Adams, Allen, DeKalb, Grant, Huntington, Wells	3 hr
May 25, 5:25 PM EDT	Severe Thunderstorm Warning	IND	Delaware, Madison	20 min
May 25, 5:26 PM EDT	Tornado Warning	IND	Decatur, Rush	19 min
May 25, 5:30 PM EDT	Severe Thunderstorm Warning	IWX	Adams, Blackford, Grant, Jay, Wells	45 min
May 25, 5:31 PM EDT	Severe Thunderstorm Warning	IND	Greene, Monroe, Morgan, Owen, Putnam	44 min
May 25, 5:46 PM EDT	Tornado Warning	IND	Greene, Monroe, Owen	44 min
May 25, 5:49 PM EDT	Severe Thunderstorm Warning	IND	Decatur, Rush	41 min
May 25, 5:56 PM EDT	Tornado Warning	IWX	Adams, Jay	21 min
May 25, 6:03 PM EDT	Tornado Warning	IND	Clay, Greene, Knox, Sullivan	42 min
May 25, 6:04 PM EDT	Severe Thunderstorm Warning	IND	Fountain, Parke, Vermillion, Vigo	41 min
May 25, 6:10 PM EDT	Severe Thunderstorm Warning	IND	Delaware, Randolph	25 min
May 25, 6:11 PM EDT	Severe Thunderstorm Warning	IND	Hendricks, Morgan, Owen, Putnam	38 min
May 25, 6:23 PM EDT	Tornado Warning	IND	Fountain, Parke, Vermillion, Vigo	52 min
May 25, 6:24 PM EDT	Flash Flood Warning	IND	Daviess, Greene, Knox, Martin	3 hr
May 25, 6:25 PM EDT	Tornado Warning	IND	Johnson, Monroe, Morgan	50 min
May 25, 6:41 PM EDT	Severe Thunderstorm Warning	IND	Bartholomew, Brown, Johnson	49 min
May 25, 6:42 PM EDT	Severe Thunderstorm Warning	IND	Greene, Monroe, Owen	33 min
May 25, 6:44 PM EDT	Tornado Warning	IND	Brown, Johnson, Morgan	46 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 12:00Z, 1.8 hours before the alert went out and 191 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: 1832 J/kg
Mixed-layer CIN: -18 J/kg
Mixed-layer LCL: 561 m above ground
0-6 km bulk shear: 40 kt
0-1 km storm-relative helicity: 253 m²/s²
0-3 km storm-relative helicity: 222 m²/s²
Significant tornado parameter: 1.6
Supercell composite: 10.1

Open this sounding in Storm Lab

The text

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

022 
WWUS20 KWNS 251349
SEL8
SPC WW 251349
INZ000-MIZ000-LMZ000-252300-

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 368
NWS STORM PREDICTION CENTER NORMAN OK
950 AM EDT WED MAY 25 2011

THE NWS STORM PREDICTION CENTER HAS ISSUED A
TORNADO WATCH FOR PORTIONS OF

       INDIANA
       SOUTHWEST LOWER MICHIGAN
       LAKE MICHIGAN

EFFECTIVE THIS WEDNESDAY MORNING AND EVENING FROM 950 AM UNTIL
700 PM EDT.

TORNADOES...HAIL TO 2 INCHES IN DIAMETER...THUNDERSTORM WIND
GUSTS TO 70 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE
AREAS.

THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 70 STATUTE
MILES EAST AND WEST OF A LINE FROM 30 MILES NORTHEAST OF SOUTH
BEND INDIANA TO 30 MILES SOUTH OF BLOOMINGTON INDIANA.  FOR A
COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE
UPDATE (WOUS64 KWNS WOU8).

REMEMBER...A TORNADO WATCH MEANS CONDITIONS ARE FAVORABLE FOR
TORNADOES AND SEVERE THUNDERSTORMS IN AND CLOSE TO THE WATCH
AREA. PERSONS IN THESE AREAS SHOULD BE ON THE LOOKOUT FOR
THREATENING WEATHER CONDITIONS AND LISTEN FOR LATER STATEMENTS
AND POSSIBLE WARNINGS.

OTHER WATCH INFORMATION...CONTINUE...WW 367...

DISCUSSION...BAND OF STRONG-SEVERE STORMS OVER ERN IL WILL PROGRESS
EWD/NEWD INTO IND THIS MORNING IN ADVANCE OF STRONG MIDLEVEL IMPULSE
LIFTING NNEWD THROUGH THE MID MS VALLEY.  12Z SOUNDING DATA AND
CURRENT SURFACE OBSERVATIONS SUGGEST THAT AIR MASS SHOULD RAPIDLY
DESTABILIZE WITH MLCAPE INCREASING TO 1000-2000 J/KG.  WHEN COUPLED
WITH STRENGTHENING VERTICAL SHEAR THROUGH THE DAY...ENVIRONMENT WILL
SUPPORT SUPERCELL AND BOWING STRUCTURES WITH A RISK FOR
TORNADOES...SOME POTENTIALLY STRONG...DAMAGING WINDS AND LARGE HAIL.

AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 2 INCHES. EXTREME TURBULENCE AND SURFACE
WIND GUSTS TO 60 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO
500. MEAN STORM MOTION VECTOR 24035.


...MEAD

SPC that day

Everything else SPC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
May 25, 1:48 AM EDT	Mesoscale Discussion	SPC	Adams, Alexander, Bond, Brown, Calhoun, Cass and 23 more	57 min
May 25, 2:22 AM EDT	Tornado Watch	SPC	Adams, Brown, Calhoun, Cass, Fulton, Greene and 16 more	7 hr
May 25, 5:58 AM EDT	Mesoscale Discussion	SPC	Bond, Brown, Calhoun, Cass, Champaign, Christian and 45 more	92 min
May 25, 6:46 AM EDT	Tornado Watch	SPC	Bond, Champaign, Christian, Clark, Clay, Clinton and 35 more	7 hr
May 25, 8:31 AM EDT	Mesoscale Discussion	SPC	Alexander, Edwards, Franklin, Gallatin, Hamilton, Hardin and 13 more	59 min
May 25, 8:48 AM EDT	Mesoscale Discussion	SPC	Champaign, Clark, Clay, Clinton, Coles, Crawford and 18 more	87 min
May 25, 9:33 AM EDT	Mesoscale Discussion	SPC	Champaign, DeWitt, Douglas, Edgar, Ford, Iroquois and 3 more	87 min
May 25, 11:18 AM EDT	Mesoscale Discussion	SPC	Bond, Clark, Clay, Clinton, Crawford, Cumberland and 12 more	57 min
May 25, 11:37 AM EDT	Tornado Watch	SPC	Adams, Brown, Pike	7 hr
May 25, 12:02 PM EDT	Mesoscale Discussion	SPC	Alexander, Franklin, Gallatin, Hamilton, Hardin, Jackson and 13 more	28 min
May 25, 12:09 PM EDT	Tornado Watch PDS	SPC	Alexander, Bond, Calhoun, Christian, Clark, Clay and 41 more	10 hr
May 25, 3:31 PM EDT	Tornado Watch	SPC	Bureau, Cass, Champaign, DeKalb, DeWitt, Ford and 33 more	7 hr
May 25, 3:32 PM EDT	Mesoscale Discussion	SPC	Calhoun, Greene, Jersey, Macoupin, Pike, Scott	58 min
May 25, 4:10 PM EDT	Mesoscale Discussion	SPC	Alexander, Franklin, Gallatin, Hardin, Jackson, Johnson and 6 more	95 min
May 25, 6:48 PM EDT	Mesoscale Discussion	SPC	Bureau, Champaign, DeKalb, DeWitt, Douglas, Ford and 19 more	117 min
May 25, 7:25 PM EDT	Mesoscale Discussion	SPC	Alexander, Clay, Clinton, Edwards, Franklin, Gallatin and 20 more	2 hr
May 25, 1:26 PM EDT	Mesoscale Discussion	SPC	Adams, Allen, Blackford, DeKalb, Delaware, Grant and 16 more	94 min
May 25, 1:55 PM EDT	Tornado Watch	SPC	Dearborn, Fayette, Franklin, Ohio, Ripley, Switzerland and 2 more	8 hr
May 25, 6:19 PM EDT	Mesoscale Discussion	SPC	Bartholomew, Blackford, Boone, Brown, Clay, Clinton and 45 more	86 min
May 25, 6:44 PM EDT	Tornado Watch PDS	SPC	Adams, Bartholomew, Blackford, Boone, Brown, Carroll and 45 more	6 hr
May 25, 4:45 PM EDT	Mesoscale Discussion	SPC	Monroe	60 min

Nearby

Tornado Watches in Indiana, 2011 Tornado Watches in Michigan, 2011 Every tornado watch 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.