Alert archive / Indiana / Severe Thunderstorm Watches in 2014

Severe Thunderstorm Watch 375

June 30, 20144 states

The Storm Prediction Center issued this severe thunderstorm watch at Jun 30, 2014, 3:33 PM CDT for 4 states. It was in force for 7 hr.

The area

The outline as issued.

The facts

Issued
Jun 30, 2014, 3:33 PM CDT (20:33 UTC)
Expired
Jun 30, 2014, 11:00 PM CDT
In force
7 hr
Issued by
the Storm Prediction Center
Particularly dangerous situation
Yes
Largest hail expected
1.5 in
Strongest gust expected
70 kt
All 43 counties

Cook County, IL, DuPage County, IL, Ford County, IL, Grundy County, IL, Iroquois County, IL, Kane County, IL, Kankakee County, IL, Kendall County, IL, Lake County, IL, Livingston County, IL, McHenry County, IL, Will County, IL, Benton County, IN, Cass County, IN, Elkhart County, IN, Fulton County, IN, Jasper County, IN, Kosciusko County, IN, Lake County, IN, LaPorte County, IN, Marshall County, IN, Miami County, IN, Newton County, IN, Porter County, IN, Pulaski County, IN, Saint Joseph County, IN, Starke County, IN, White County, IN, Berrien County, MI, Cass County, MI, Columbia County, WI, Dodge County, WI, Fond du Lac County, WI, Jefferson County, WI, Kenosha County, WI, Milwaukee County, WI, Ozaukee County, WI, Racine County, WI, Sauk County, WI, Sheboygan County, WI, Walworth County, WI, Washington County, WI, Waukesha County, WI

The radar

The Chicago radar (KLOT), 79 km from the middle of the area, began a volume at 20:36 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
20%
One or more EF2 to EF5 tornadoes
10%
Ten or more severe wind reports
90%
One or more gusts of 65 knots or more
80%
Ten or more severe hail reports
30%
One or more hailstones of 2 inches or more
10%
Six or more combined severe hail and wind reports
95%

Warnings issued inside it

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

IssuedProductOfficeCountiesLasted
Jun 30, 4:29 PM CDTSevere Thunderstorm WarningMKXDane, Green, Iowa, Lafayette, Rock, Sauk46 min
Jun 30, 5:11 PM CDTSevere Thunderstorm WarningMKXColumbia, Dane, Dodge, Jefferson, Rock, Walworth and 1 more49 min
Jun 30, 5:14 PM CDTSevere Thunderstorm WarningMKXColumbia, Dodge, Fond du Lac31 min
Jun 30, 5:52 PM CDTSevere Thunderstorm WarningMKXJefferson, Kenosha, Milwaukee, Racine, Walworth, Waukesha38 min
Jun 30, 6:00 PM CDTSevere Thunderstorm WarningMKXDodge, Jefferson, Milwaukee, Ozaukee, Washington, Waukesha45 min
Jun 30, 6:14 PM CDTSevere Thunderstorm WarningLOTCook, DeKalb, DuPage, Kane, Kendall, Will61 min
Jun 30, 6:48 PM CDTSevere Thunderstorm WarningLOTKendall, Will27 min
Jun 30, 7:04 PM CDTSevere Thunderstorm WarningLOTCook, Kankakee, Will56 min
Jun 30, 7:54 PM CDTSevere Thunderstorm WarningLOTJasper, Lake, Porter44 min
Jun 30, 8:12 PM CDTSevere Thunderstorm WarningIWXLaPorte, Saint Joseph, Starke48 min
Jun 30, 8:39 PM CDTSevere Thunderstorm WarningIWXBerrien, Cass51 min
Jun 30, 8:46 PM CDTSevere Thunderstorm WarningIWXElkhart, Marshall, Saint Joseph44 min
Jun 30, 8:50 PM CDTSevere Thunderstorm WarningLOTBoone, DeKalb, Kane, LaSalle, Lee, McHenry40 min
Jun 30, 9:18 PM CDTSevere Thunderstorm WarningLOTGrundy, LaSalle, Livingston57 min
Jun 30, 9:27 PM CDTSevere Thunderstorm WarningLOTCook, DeKalb, DuPage, Kane, Kendall, LaSalle and 1 more78 min
Jun 30, 9:49 PM CDTSevere Thunderstorm WarningLOTFord, Iroquois, Kankakee, Livingston, Will56 min
Jun 30, 9:58 PM CDTTornado WarningLOTCook, Will32 min
Jun 30, 10:12 PM CDTSevere Thunderstorm WarningLOTFord, Iroquois, Livingston78 min
Jun 30, 10:12 PM CDTSevere Thunderstorm WarningLOTBenton, Jasper, Lake, Newton, Porter78 min
Jun 30, 10:32 PM CDTTornado WarningLOTKankakee28 min
Jun 30, 10:42 PM CDTSevere Thunderstorm WarningLOTIroquois, Kankakee18 min
Jun 30, 10:56 PM CDTTornado WarningLOTJasper, Porter18 min
Jun 30, 10:57 PM CDTSevere Thunderstorm WarningIWXLaPorte, Saint Joseph, Starke48 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

Davenport, (KDVN), launched 12:00Z, 8.6 hours before the alert went out and 244 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-pSkew-T log-p diagram, Davenport, at 12:00Z on 2014-06-30Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1426 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Davenport, at 12:00Z on 2014-06-30The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 253 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
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
1426 J/kg
Mixed-layer CIN
-49 J/kg
Mixed-layer LCL
544 m above ground
0-6 km bulk shear
46 kt
0-1 km storm-relative helicity
253 m²/s²
0-3 km storm-relative helicity
262 m²/s²
Significant tornado parameter
2.3
Supercell composite
15.0

Open this sounding in Storm Lab

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jun 29, 8:15 PM CDTSevere Thunderstorm WatchSPCCarroll, Jo Daviess, Rock Island, Stephenson, Whiteside7 hr
Jun 29, 9:43 PM CDTMesoscale DiscussionSPCCarroll, Jo Daviess, Stephenson92 min
Jun 29, 10:54 PM CDTTornado WatchSPCBoone, Carroll, DeKalb, Jo Daviess, Kane, Lee and 5 more5 hr
Jun 30, 1:41 AM CDTMesoscale DiscussionSPCBureau, Cook, DeKalb, DuPage, Grundy, Kane and 11 more64 min
Jun 30, 10:18 AM CDTMesoscale DiscussionSPCChristian, Logan, Macon, Mason, Menard, Montgomery and 5 more87 min
Jun 30, 1:27 PM CDTMesoscale DiscussionSPCBoone, Bureau, Carroll, Champaign, DeKalb, DeWitt and 36 more93 min
Jun 30, 2:03 PM CDTTornado WatchSPCBoone, Bureau, Carroll, DeKalb, Fulton, Hancock and 22 more5 hr
Jun 30, 3:25 PM CDTMesoscale DiscussionSPCBoone, Bureau, Carroll, Cook, DeKalb, DuPage and 35 more35 min
Jun 30, 4:33 PM CDTMesoscale DiscussionSPCBoone, Cook, DeKalb, DuPage, Kane, Kendall and 6 more117 min
Jun 30, 5:29 PM CDTTornado WatchSPCAdams, Brown, Pike6 hr
Jun 30, 6:08 PM CDTMesoscale DiscussionSPCDeWitt, LaSalle, McLean, Marshall, Peoria, Putnam and 3 more67 min
Jun 30, 6:28 PM CDTMesoscale DiscussionSPCJo Daviess, Rock Island92 min
Jun 29, 7:48 PM CDTMesoscale DiscussionSPCBaraga, Gogebic, Houghton, Iron, Marquette, Ontonagon87 min
Jun 30, 6:47 PM CDTMesoscale DiscussionSPCAllegan, Barry, Clare, Clinton, Crawford, Gladwin and 21 more88 min
Jun 29, 7:50 PM CDTMesoscale DiscussionSPCCrawford, Grant85 min

Nearby

Severe Thunderstorm Watches in Indiana, 2014Severe Thunderstorm Watches in Wisconsin, 2014Severe Thunderstorm Watches in Illinois, 2014Every severe thunderstorm watch in 2014

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.