Alert archive / Illinois / Tornado Watches in 2006

Tornado Watch 182

April 14, 200627 counties in Illinois; 17 counties in Indiana

The Storm Prediction Center issued this tornado watch at Apr 14, 2006, 1:58 AM CDT for 27 counties in Illinois; 17 counties in Indiana. It was in force for 4 hr.

The area

The outline as issued.

The facts

Issued
Apr 14, 2006, 1:58 AM CDT (06:58 UTC)
Expired
Apr 14, 2006, 5:53 AM CDT
In force
4 hr
Issued by
the Storm Prediction Center
All 44 counties

Champaign County, IL, Clark County, IL, Clay County, IL, Coles County, IL, Crawford County, IL, Cumberland County, IL, DeWitt County, IL, Douglas County, IL, Edgar County, IL, Effingham County, IL, Ford County, IL, Grundy County, IL, Iroquois County, IL, Jasper County, IL, Kankakee County, IL, Kendall County, IL, LaSalle County, IL, Lawrence County, IL, Livingston County, IL, Macon County, IL, McLean County, IL, Moultrie County, IL, Piatt County, IL, Putnam County, IL, Richland County, IL, Shelby County, IL, Vermilion County, IL, Brown County, IN, Clay County, IN, Daviess County, IN, Fountain County, IN, Greene County, IN, Jackson County, IN, Knox County, IN, Lawrence County, IN, Martin County, IN, Monroe County, IN, Morgan County, IN, Owen County, IN, Parke County, IN, Putnam County, IN, Sullivan County, IN, Vermillion County, IN, Vigo County, IN

The radar

The Lincoln radar (KILX), 75 km from the middle of the area, began a volume at 07:02 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.

Warnings issued inside it

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

IssuedProductOfficeCountiesLasted
Apr 14, 1:58 AM CDTSevere Thunderstorm WarningINDParke, Vermillion35 min
Apr 14, 2:33 AM CDTSevere Thunderstorm WarningLOTKendall14 min
Apr 14, 2:35 AM CDTSevere Thunderstorm WarningINDClay, Owen, Putnam37 min
Apr 14, 3:01 AM CDTSevere Thunderstorm WarningINDBrown, Monroe, Morgan, Owen37 min
Apr 14, 3:20 AM CDTTornado WarningINDBrown, Jackson, Monroe30 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 00:00Z, 7.0 hours before the alert went out and 24 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, Lincoln, IL at 00:00Z on 2006-04-14Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 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, Lincoln, IL at 00:00Z on 2006-04-14The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 90 square meters per square second.1939587897Sfc1 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
2712 m above ground
0-6 km bulk shear
61 kt
0-1 km storm-relative helicity
90 m²/s²
0-3 km storm-relative helicity
218 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.6

Open this sounding in Storm Lab

The text

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

000 
WWUS20 KWNS 140654
SEL2  
SPC WW 140654
ILZ000-INZ000-141400-

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 182
NWS STORM PREDICTION CENTER NORMAN OK
155 AM CDT FRI APR 14 2006

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

       CENTRAL AND EASTERN ILLINOIS
       WESTERN INDIANA

EFFECTIVE THIS FRIDAY MORNING FROM 155 AM UNTIL 900 AM CDT.

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 60 STATUTE
MILES EAST AND WEST OF A LINE FROM 15 MILES WEST NORTHWEST OF
MARSEILLES ILLINOIS TO 45 MILES SOUTHWEST OF BLOOMINGTON INDIANA.
 FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH
OUTLINE UPDATE (WOUS64 KWNS WOU2).

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...THIS TORNADO WATCH REPLACES SEVERE
THUNDERSTORM WATCH NUMBER 179...SEVERE THUNDERSTORM WATCH NUMBER
181. WATCH NUMBER 179 181 WILL NOT BE IN EFFECT AFTER 155 AM CDT.
CONTINUE...WW 180...

DISCUSSION...DISCRETE SUPERCELLS EXPECTED TO PERSIST WHERE MDT TO
STRONG WLY LLJ IMPINGES ON WEAK WARM FRONT/CONVECTIVE OUTFLOW
BOUNDARY STALLED NNW/SSE ACROSS WW REGION.  STRONG/DEEPLY CURVED
WIND PROFILE ON ILX VWP...COUPLED WITH LESSENING TEMP-DEWPOINT
SPREADS...SUGGESTS POTENTIAL FOR TORNADOES GIVEN DISCRETE NATURE OF
SURFACE TO NEAR-SURFACE-BASED STORMS.

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 29030.


...CORFIDI

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Apr 13, 7:58 PM CDTMesoscale DiscussionSPCBoone, Bureau, Carroll, DeKalb, DuPage, Ford and 26 more92 min
Apr 13, 8:24 PM CDTSevere Thunderstorm WatchSPCBoone, Bureau, Carroll, Cook, DeKalb, DuPage and 26 more7 hr
Apr 13, 10:31 PM CDTMesoscale DiscussionSPCBoone, Bureau, Carroll, Champaign, Cook, DeKalb and 38 more59 min
Apr 13, 11:30 PM CDTSevere Thunderstorm WatchSPCChampaign, Christian, Clark, Coles, Cumberland, DeWitt and 12 more2 hr
Apr 14, 1:34 AM CDTMesoscale DiscussionSPCBoone, Bureau, Champaign, Christian, Clark, Clay and 39 more86 min
Apr 14, 7:20 AM CDTMesoscale DiscussionSPCCass, Fulton, Hancock, Henderson, Knox, McDonough and 5 more115 min
Apr 14, 9:15 AM CDTSevere Thunderstorm WatchSPCCass, Champaign, Christian, Clark, Coles, Crawford and 29 more6 hr
Apr 14, 10:05 AM CDTMesoscale DiscussionSPCBrown, Cass, Champaign, Christian, Clark, Coles and 20 more85 min
Apr 14, 4:48 PM CDTMesoscale DiscussionSPCBrown, Bureau, Cass, Champaign, Christian, Clark and 45 more87 min
Apr 14, 5:19 PM CDTTornado WatchSPCBoone, Bureau, Carroll, Cass, Champaign, Christian and 57 more4 hr
Apr 14, 6:57 PM CDTMesoscale DiscussionSPCCass, Champaign, Coles, DeWitt, Douglas, Edgar and 24 more93 min
Apr 13, 11:00 PM CDTSevere Thunderstorm WatchSPCAdams, Allen, Bartholomew, Blackford, Boone, Brown and 49 more5 hr
Apr 14, 3:14 AM CDTMesoscale DiscussionSPCClark, Crawford, Floyd, Harrison, Jefferson, Ohio and 3 more91 min
Apr 14, 1:46 PM CDTMesoscale DiscussionSPCAdams, Allen, Benton, Blackford, Boone, Carroll and 32 more89 min
Apr 14, 2:03 PM CDTSevere Thunderstorm WatchSPCAdams, Allen, Bartholomew, Blackford, Boone, Brown and 41 more9 hr
Apr 14, 4:54 PM CDTMesoscale DiscussionSPCAdams, Allen, Bartholomew, Blackford, Boone, Brown and 51 more66 min
Apr 14, 6:09 PM CDTTornado WatchSPCBartholomew, Boone, Brown, Carroll, Clay, Clinton and 30 more6 hr
Apr 14, 6:58 PM CDTTornado WatchSPCDearborn, Fayette, Franklin, Ohio, Ripley, Switzerland and 2 more6 hr

Nearby

Tornado Watches in Illinois, 2006Tornado Watches in Indiana, 2006Every tornado watch in 2006

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.