Alert archive / Illinois / Severe Thunderstorm Watches in 2003

Severe Thunderstorm Watch 369

May 14, 200339 counties in Illinois

The Storm Prediction Center issued this severe thunderstorm watch at May 14, 2003, 1:10 PM CDT for 39 counties in Illinois. It was in force for 6 hr.

The area

The outline as issued.

The facts

Issued
May 14, 2003, 1:10 PM CDT (18:10 UTC)
Expired
May 14, 2003, 7:00 PM CDT
In force
6 hr
Issued by
the Storm Prediction Center
All 39 counties

Brown County, IL, Bureau County, IL, Cass County, IL, Champaign County, IL, DeWitt County, IL, Douglas County, IL, Edgar County, IL, Ford County, IL, Fulton County, IL, Grundy County, IL, Henry County, IL, Iroquois County, IL, Kankakee County, IL, Kendall County, IL, Knox County, IL, LaSalle County, IL, Livingston County, IL, Logan County, IL, Macon County, IL, Marshall County, IL, Mason County, IL, McDonough County, IL, McLean County, IL, Menard County, IL, Morgan County, IL, Moultrie County, IL, Peoria County, IL, Piatt County, IL, Putnam County, IL, Rock Island County, IL, Sangamon County, IL, Schuyler County, IL, Scott County, IL, Stark County, IL, Tazewell County, IL, Vermilion County, IL, Warren County, IL, Will County, IL, Woodford County, IL

The radar

The Lincoln radar (KILX), 29 km from the middle of the area, began a volume at 18:09 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

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

IssuedProductOfficeCountiesLasted
May 14, 1:34 PM CDTSevere Thunderstorm WarningDVNHenry41 min
May 14, 2:49 PM CDTSevere Thunderstorm WarningILXStark26 min
May 14, 3:15 PM CDTSevere Thunderstorm WarningILXMarshall, Stark60 min
May 14, 3:25 PM CDTSevere Thunderstorm WarningILXPeoria50 min
May 14, 3:55 PM CDTSevere Thunderstorm WarningILXWoodford50 min
May 14, 4:15 PM CDTSevere Thunderstorm WarningILXMarshall30 min
May 14, 4:25 PM CDTSevere Thunderstorm WarningLOTLivingston50 min
May 14, 4:37 PM CDTSevere Thunderstorm WarningILXTazewell38 min
May 14, 5:11 PM CDTSevere Thunderstorm WarningLOTFord, Iroquois, Livingston49 min
May 14, 5:31 PM CDTSevere Thunderstorm WarningILXMcLean44 min
May 14, 5:33 PM CDTTornado WarningILXMcLean42 min
May 14, 5:57 PM CDTTornado WarningLOTFord, Iroquois48 min
May 14, 6:04 PM CDTTornado WarningILXChampaign, Vermilion56 min
May 14, 6:13 PM CDTTornado WarningILXDeWitt, Piatt47 min
May 14, 6:14 PM CDTTornado WarningILXMcLean61 min
May 14, 6:18 PM CDTTornado WarningILXLogan57 min
May 14, 6:37 PM CDTTornado WarningDVNHenderson, McDonough43 min
May 14, 6:43 PM CDTSevere Thunderstorm WarningDVNMercer, Warren42 min
May 14, 6:48 PM CDTSevere Thunderstorm WarningILXCass, Mason, Schuyler42 min
May 14, 7:00 PM CDTTornado WarningILXChampaign, Vermilion60 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, 6.2 hours before the alert went out and 77 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 2003-05-14Temperature 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 2003-05-14The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 44 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1154 m above ground
0-6 km bulk shear
44 kt
0-1 km storm-relative helicity
44 m²/s²
0-3 km storm-relative helicity
132 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
May 14, 12:36 PM CDTMesoscale DiscussionSPCAdams, Brown, Bureau, Cass, Champaign, Christian and 38 more84 min
May 14, 2:00 PM CDTSevere Thunderstorm WatchSPCHenderson, Mercer5 hr
May 14, 2:45 PM CDTMesoscale DiscussionSPCBureau, Cass, Champaign, Christian, Coles, DeWitt and 32 more60 min
May 14, 3:23 PM CDTMesoscale DiscussionSPCHancock, Henderson97 min
May 14, 5:07 PM CDTMesoscale DiscussionSPCBrown, Bureau, Cass, Champaign, DeWitt, Douglas and 28 more113 min
May 14, 6:45 PM CDTSevere Thunderstorm WatchSPCBond, Brown, Calhoun, Cass, Champaign, Christian and 35 more5 hr

Nearby

Severe Thunderstorm Watches in Illinois, 2003Every severe thunderstorm watch in 2003

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.