Alert archive / Illinois / Tornado Watches in 2005

Tornado Watch 105

March 30, 20054 states

The Storm Prediction Center issued this tornado watch at Mar 30, 2005, 12:55 PM CST for 4 states. It was in force for 7 hr.

The area

The outline as issued.

The facts

Issued
Mar 30, 2005, 12:55 PM CST (18:55 UTC)
Expired
Mar 30, 2005, 8:00 PM CST
In force
7 hr
Issued by
the Storm Prediction Center
All 66 counties

Bond County, IL, Boone County, IL, Bureau County, IL, Champaign County, IL, Christian County, IL, Clark County, IL, Clay County, IL, Clinton County, IL, Coles County, IL, Cook County, IL, Crawford County, IL, Cumberland County, IL, DeKalb County, IL, DeWitt County, IL, Douglas County, IL, DuPage County, IL, Edgar County, IL, Effingham County, IL, Fayette County, IL, Ford County, IL, Grundy County, IL, Iroquois County, IL, Jasper County, IL, Kane County, IL, Kankakee County, IL, Kendall County, IL, Lake County, IL, LaSalle County, IL, Lawrence County, IL, Lee County, IL, Livingston County, IL, Logan County, IL, Macon County, IL, Macoupin County, IL, Madison County, IL, Marion County, IL, Marshall County, IL, Mason County, IL, McHenry County, IL, McLean County, IL, Menard County, IL, Montgomery County, IL, Moultrie County, IL, Ogle County, IL, Peoria County, IL, Piatt County, IL, Putnam County, IL, Richland County, IL, Sangamon County, IL, Shelby County, IL, Tazewell County, IL, Vermilion County, IL, Will County, IL, Winnebago County, IL, Woodford County, IL, Benton County, IN, Fountain County, IN, Jasper County, IN, Lake County, IN, Newton County, IN, Porter County, IN, Vermillion County, IN, Vigo County, IN, Warren County, IN, Berrien County, MI, City of Saint Louis, MO

The radar

The Lincoln radar (KILX), 39 km from the middle of the area, began a volume at 18:56 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

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

IssuedProductOfficeCountiesLasted
Mar 30, 1:25 PM CSTSevere Thunderstorm WarningILXKnox, Peoria, Stark67 min
Mar 30, 1:58 PM CSTSevere Thunderstorm WarningILXFulton, Peoria62 min
Mar 30, 2:20 PM CSTSevere Thunderstorm WarningDVNBureau, Putnam40 min
Mar 30, 2:41 PM CSTTornado WarningILXPeoria, Tazewell, Woodford34 min
Mar 30, 3:15 PM CSTTornado WarningILXMarshall, Woodford31 min
Mar 30, 3:16 PM CSTTornado WarningLOTLaSalle, Livingston44 min
Mar 30, 3:19 PM CSTSevere Thunderstorm WarningDVNBureau26 min
Mar 30, 3:31 PM CSTSevere Thunderstorm WarningLOTOgle44 min
Mar 30, 3:41 PM CSTTornado WarningILXWoodford34 min
Mar 30, 3:50 PM CSTSevere Thunderstorm WarningILXSangamon25 min
Mar 30, 3:57 PM CSTSevere Thunderstorm WarningILXMarshall48 min
Mar 30, 3:57 PM CSTSevere Thunderstorm WarningILXMarshall48 min
Mar 30, 4:00 PM CSTTornado WarningLOTLaSalle30 min
Mar 30, 4:07 PM CSTSevere Thunderstorm WarningILXDeWitt, Logan38 min
Mar 30, 4:15 PM CSTTornado WarningLOTGrundy, Kendall45 min
Mar 30, 4:23 PM CSTSevere Thunderstorm WarningLSXBond, Montgomery37 min
Mar 30, 4:27 PM CSTSevere Thunderstorm WarningILXMcLean48 min
Mar 30, 4:34 PM CSTSevere Thunderstorm WarningILXMason, Tazewell56 min
Mar 30, 4:43 PM CSTSevere Thunderstorm WarningILXChristian, Macon, Shelby49 min
Mar 30, 4:52 PM CSTSevere Thunderstorm WarningLOTDuPage, Will53 min
Mar 30, 5:20 PM CSTSevere Thunderstorm WarningLOTCook55 min
Mar 30, 5:24 PM CSTSevere Thunderstorm WarningLOTGrundy, Livingston, Will66 min
Mar 30, 5:31 PM CSTSevere Thunderstorm WarningILXPiatt44 min
Mar 30, 5:32 PM CSTSevere Thunderstorm WarningILXMarshall, Woodford58 min
Mar 30, 5:40 PM CSTSevere Thunderstorm WarningILXLogan, McLean35 min
Mar 30, 5:41 PM CSTSevere Thunderstorm WarningLOTLaSalle64 min
Mar 30, 5:43 PM CSTSevere Thunderstorm WarningILXTazewell47 min
Mar 30, 5:52 PM CSTSevere Thunderstorm WarningDVNPutnam24 min
Mar 30, 5:54 PM CSTSevere Thunderstorm WarningILXChampaign36 min
Mar 30, 5:55 PM CSTSevere Thunderstorm WarningILXWoodford39 min
Mar 30, 6:04 PM CSTSevere Thunderstorm WarningLOTDeKalb41 min
Mar 30, 6:13 PM CSTSevere Thunderstorm WarningLOTCook62 min
Mar 30, 6:19 PM CSTSevere Thunderstorm WarningLOTDeKalb, LaSalle, Lee56 min
Mar 30, 6:25 PM CSTSevere Thunderstorm WarningDVNBureau20 min
Mar 30, 6:29 PM CSTSevere Thunderstorm WarningILXChristian, Macon32 min
Mar 30, 6:30 PM CSTSevere Thunderstorm WarningLOTLaSalle60 min
Mar 30, 6:32 PM CSTSevere Thunderstorm WarningLSXClinton, Saint Clair, Washington28 min
Mar 30, 6:38 PM CSTSevere Thunderstorm WarningLOTGrundy, Kendall67 min
Mar 30, 6:39 PM CSTSevere Thunderstorm WarningILXMcLean37 min
Mar 30, 6:44 PM CSTSevere Thunderstorm WarningILXDeWitt31 min
Mar 30, 6:47 PM CSTSevere Thunderstorm WarningLSXFayette43 min
Mar 30, 6:50 PM CSTSevere Thunderstorm WarningLSXBond, Randolph47 min
Mar 30, 6:55 PM CSTSevere Thunderstorm WarningLOTCook, DuPage, Will65 min
Mar 30, 6:59 PM CSTSevere Thunderstorm WarningLSXClinton, Washington61 min
Mar 30, 7:05 PM CSTSevere Thunderstorm WarningLOTBoone, McHenry55 min
Mar 30, 7:10 PM CSTSevere Thunderstorm WarningLOTFord, Iroquois, Kankakee, Livingston65 min
Mar 30, 7:22 PM CSTSevere Thunderstorm WarningLSXFayette38 min
Mar 30, 7:31 PM CSTSevere Thunderstorm WarningILXChampaign, McLean, Piatt59 min
Mar 30, 7:36 PM CSTSevere Thunderstorm WarningILXDouglas, Moultrie39 min
Mar 30, 7:41 PM CSTSevere Thunderstorm WarningLOTCook64 min
Mar 30, 7:46 PM CSTSevere Thunderstorm WarningLSXMarion74 min
Mar 30, 7:48 PM CSTSevere Thunderstorm WarningILXCumberland, Effingham42 min
Mar 30, 7:51 PM CSTSevere Thunderstorm WarningLOTCook, Kankakee, Will24 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, 6.9 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 12:00Z on 2005-03-30Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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 12:00Z on 2005-03-30The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 244 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
1491 m above ground
0-6 km bulk shear
52 kt
0-1 km storm-relative helicity
244 m²/s²
0-3 km storm-relative helicity
299 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.

000 
WWUS20 KWNS 301854
SEL5  
SPC WW 301854
ILZ000-INZ000-LMZ000-310200-

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 105
NWS STORM PREDICTION CENTER NORMAN OK
1255 PM CST WED MAR 30 2005

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

       EASTERN AND CENTRAL ILLINOIS
       WESTERN INDIANA
       LAKE MICHIGAN

EFFECTIVE THIS WEDNESDAY AFTERNOON AND EVENING FROM 1255 PM UNTIL
800 PM CST.

TORNADOES...HAIL TO 3 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 75 STATUTE MILES
EAST AND WEST OF A LINE FROM 45 MILES NORTH NORTHWEST OF MEIGS
FIELD ILLINOIS TO 10 MILES SOUTH SOUTHWEST OF SALEM ILLINOIS.  FOR
A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE
UPDATE (WOUS64 KWNS WOU5).

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 103...WW 104...

DISCUSSION...AIRMASS HAS RAPIDLY DESTABILIZED NWD ACROSS WATCH AREA
AHEAD OF INTENSE SYSTEM BOTH SURFACE AND ALOFT.  VERY STRONG SHEAR
PROFILES NOW IN PLACE IL AND WITH INHIBITION NEGLIGIBLE...SEVERE
STORMS EXPECTED TO RAPIDLY DEVELOP AHEAD OF COLD FRONT MOVING THRU
ERN MO INTO WRN IL.  IN ADDITION TO TORNADIC SUPERCELLS...VERY LARGE
HAIL AND DAMAGING WINDS ARE EXPECTED.

AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 3 INCHES. EXTREME TURBULENCE AND SURFACE WIND
GUSTS TO 60 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 500.
MEAN STORM MOTION VECTOR 23045.


...HALES

422,0862 382,0873 382,0902 422,0892

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Mar 30, 10:46 AM CSTMesoscale DiscussionSPCAdams, Brown, Carroll, Cass, Fulton, Hancock and 14 more119 min
Mar 30, 11:05 AM CSTTornado WatchSPCBureau, Carroll, Fulton, Hancock, Henderson, Henry and 15 more5 hr
Mar 30, 12:08 PM CSTMesoscale DiscussionSPCBond, Calhoun, Cass, Champaign, Christian, Clark and 49 more2 hr
Mar 30, 1:23 PM CSTMesoscale DiscussionSPCBureau, Carroll, Fulton, Hancock, Henderson, Henry and 15 more97 min
Mar 30, 2:15 PM CSTTornado WatchSPCBoone, Bureau, Carroll, DeKalb, Henry, Jo Daviess and 11 more6 hr
Mar 30, 3:18 PM CSTMesoscale DiscussionSPCBoone, Champaign, Clark, Coles, Cook, Crawford and 28 more117 min
Mar 30, 3:54 PM CSTMesoscale DiscussionSPCBoone, Bureau, Carroll, Jo Daviess, Lee, McHenry and 4 more66 min
Mar 30, 5:24 PM CSTMesoscale DiscussionSPCBond, Champaign, Christian, Clark, Clay, Coles and 30 more2 hr

Nearby

Tornado Watches in Illinois, 2005Tornado Watches in Indiana, 2005Tornado Watches in Michigan, 2005Every tornado watch in 2005

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.