Alert archive / Illinois / Tornado Watches in 2003
Tornado Watch 350
The Storm Prediction Center issued this tornado watch at May 10, 2003, 9:10 PM CDT for 4 states. It was in force for 5 hr.
The area
The outline as issued.
The facts
- Issued
- May 10, 2003, 9:10 PM CDT (02:10 UTC)
- Expired
- May 11, 2003, 2:00 AM CDT
- In force
- 5 hr
- Issued by
- the Storm Prediction Center
All 109 counties
Adams County, IL, Bond County, IL, Brown County, IL, Calhoun County, IL, Cass County, IL, Champaign County, IL, Christian County, IL, Clark County, IL, Clay County, IL, Clinton County, IL, Coles County, IL, Crawford County, IL, Cumberland County, IL, DeWitt County, IL, Douglas County, IL, Edgar County, IL, Edwards County, IL, Effingham County, IL, Fayette County, IL, Fulton County, IL, Greene County, IL, Hancock County, IL, Jasper County, IL, Jefferson County, IL, Jersey County, IL, Lawrence County, IL, Logan County, IL, Macon County, IL, Macoupin County, IL, Madison County, IL, Marion County, IL, Mason County, IL, McDonough County, IL, McLean County, IL, Menard County, IL, Monroe County, IL, Montgomery County, IL, Morgan County, IL, Moultrie County, IL, Piatt County, IL, Pike County, IL, Richland County, IL, Saint Clair County, IL, Sangamon County, IL, Schuyler County, IL, Scott County, IL, Shelby County, IL, Vermilion County, IL, Wabash County, IL, Washington County, IL, Wayne County, IL, Bartholomew County, IN, Boone County, IN, Brown County, IN, Clark County, IN, Clay County, IN, Clinton County, IN, Crawford County, IN, Daviess County, IN, Decatur County, IN, Dubois County, IN, Floyd County, IN, Fountain County, IN, Gibson County, IN, Grant County, IN, Greene County, IN, Hamilton County, IN, Hancock County, IN, Hendricks County, IN, Howard County, IN, Jackson County, IN, Jefferson County, IN, Jennings County, IN, Johnson County, IN, Knox County, IN, Lawrence County, IN, Madison County, IN, Marion County, IN, Martin County, IN, Monroe County, IN, Montgomery County, IN, Morgan County, IN, Orange County, IN, Owen County, IN, Parke County, IN, Pike County, IN, Putnam County, IN, Rush County, IN, Scott County, IN, Shelby County, IN, Sullivan County, IN, Tippecanoe County, IN, Tipton County, IN, Vermillion County, IN, Vigo County, IN, Warren County, IN, Washington County, IN, Oldham County, KY, City of Saint Louis, MO, Franklin County, MO, Gasconade County, MO, Jefferson County, MO, Lincoln County, MO, Montgomery County, MO, Pike County, MO, Ralls County, MO, Saint Charles County, MO, Saint Louis County, MO, Warren County, MO
The radar
The Lincoln radar (KILX), 67 km from the middle of the area, began a volume at 02:12 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
9 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 10, 9:29 PM CDT | Severe Thunderstorm Warning | ILX | Schuyler | 61 min |
| May 10, 9:30 PM CDT | Severe Thunderstorm Warning | ILX | Schuyler | 60 min |
| May 10, 9:45 PM CDT | Tornado Warning | ILX | Mason, Tazewell | 60 min |
| May 10, 9:59 PM CDT | Severe Thunderstorm Warning | ILX | Fulton | 61 min |
| May 10, 10:35 PM CDT | Tornado Warning | ILX | McLean | 70 min |
| May 10, 10:36 PM CDT | Severe Thunderstorm Warning | IND | Putnam | 39 min |
| May 10, 10:51 PM CDT | Severe Thunderstorm Warning | IND | Hendricks, Morgan | 39 min |
| May 10, 11:01 PM CDT | Severe Thunderstorm Warning | IND | Marion | 44 min |
| May 10, 11:16 PM CDT | Severe Thunderstorm Warning | IND | Jackson, Jennings | 44 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, 2.2 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.
- Mixed-layer CAPE
- 2426 J/kg
- Mixed-layer CIN
- -41 J/kg
- Mixed-layer LCL
- 784 m above ground
- 0-6 km bulk shear
- 58 kt
- 0-1 km storm-relative helicity
- 193 m²/s²
- 0-3 km storm-relative helicity
- 257 m²/s²
- Significant tornado parameter
- 3.2
- Supercell composite
- 17.1
The text
As transmitted, in the capitals the NWS used until 2016.
000
WWUS20 KWNS 110203
SEL0
SPC WW 110210
ILZ000-INZ000-MOZ000-110700-
URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 350
NWS STORM PREDICTION CENTER NORMAN OK
910 PM CDT SAT MAY 10 2003
THE NWS STORM PREDICTION CENTER HAS ISSUED A
TORNADO WATCH FOR PORTIONS OF
SOUTHERN AND CENTRAL ILLINOIS
SOUTHERN AND CENTRAL INDIANA
EASTERN MISSOURI
EFFECTIVE THIS SATURDAY NIGHT AND SUNDAY MORNING FROM 910 PM UNTIL
200 AM CDT.
...THIS IS A PARTICULARLY DANGEROUS SITUATION...
DESTRUCTIVE TORNADOES...LARGE HAIL TO 3 INCHES IN DIAMETER...
THUNDERSTORM WIND GUSTS TO 80 MPH...AND DANGEROUS LIGHTNING ARE
POSSIBLE IN THESE AREAS.
THE TORNADO WATCH AREA IS ALONG AND 80 STATUTE MILES NORTH AND
SOUTH OF A LINE FROM 50 MILES SOUTH SOUTHWEST OF QUINCY ILLINOIS
TO 50 MILES EAST SOUTHEAST OF INDIANAPOLIS INDIANA.
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 TORNADO
WATCH NUMBER 344. WATCH NUMBER 344 WILL NOT BE IN EFFECT AFTER 910
PM CDT. CONTINUE...WW 341...WW 343...WW 344...WW 345...WW 346...WW
347...WW 348...WW 349...
DISCUSSION...STRONG SHEAR AHEAD OF DEEPENING LOW AND APPROACHING
UPPER TROUGH SUPPORTS CONTINUED THREAT OF TORNADIC SUPERCELLS
SPREADING EASTWARD ACROSS WRN OH VALLEY.
AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 3 INCHES. EXTREME TURBULENCE AND SURFACE WIND
GUSTS TO 70 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 550.
MEAN STORM MOTION VECTOR 24045.
...HALES
402,0913 403,0852 381,0852 380,0913SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 10, 7:06 PM CDT | Mesoscale Discussion | SPC | Alexander, Franklin, Hardin, Jackson, Johnson, Massac and 7 more | 54 min |
| May 10, 8:05 PM CDT | Tornado Watch | SPC | Boone, Cook, DeKalb, DuPage, Ford, Grundy and 12 more | 6 hr |
| May 10, 8:18 PM CDT | Mesoscale Discussion | SPC | Bureau, Carroll, Henderson, Henry, Jo Daviess, Knox and 8 more | 117 min |
| May 10, 8:41 PM CDT | Mesoscale Discussion | SPC | Crawford, Lawrence, Richland, Wabash | 2 hr |
| May 10, 8:45 PM CDT | Tornado Watch | SPC | Alexander, Franklin, Gallatin, Hamilton, Hardin, Jackson and 10 more | 5 hr |
| May 10, 9:35 PM CDT | Tornado Watch | SPC | Bureau, Carroll, Henderson, Henry, Jo Daviess, Knox and 11 more | 3 hr |
| May 10, 10:56 PM CDT | Mesoscale Discussion | SPC | Boone, Bureau, Cook, DeKalb, DuPage, Ford and 19 more | 94 min |
| May 11, 1:46 AM CDT | Mesoscale Discussion | SPC | Adams, Bond, Brown, Calhoun, Cass, Champaign and 42 more | 89 min |
| May 10, 10:40 PM CDT | Mesoscale Discussion | SPC | DeKalb, Elkhart, Kosciusko, LaGrange, LaPorte, Marshall and 5 more | 2 hr |
| May 10, 11:00 PM CDT | Tornado Watch | SPC | Adams, Allen, Cass, DeKalb, Elkhart, Fulton and 15 more | 6 hr |
| May 10, 11:20 PM CDT | Tornado Watch | SPC | Harrison, Perry, Spencer | 6 hr |
| May 10, 11:28 PM CDT | Mesoscale Discussion | SPC | Dearborn, Fayette, Franklin, Jay, Ohio, Randolph and 4 more | 2 hr |
| May 10, 8:28 PM CDT | Mesoscale Discussion | SPC | Breathitt, Floyd, Johnson, Knott, Magoffin, Martin and 1 more | 62 min |
| May 10, 10:04 PM CDT | Mesoscale Discussion | SPC | Allen, Barren, Breckinridge, Butler, Caldwell, Calloway and 23 more | 116 min |
| May 11, 4:16 AM CDT | Mesoscale Discussion | SPC | Adair, Anderson, Barren, Bath, Bell, Bourbon and 68 more | 59 min |
| May 11, 5:05 AM CDT | Severe Thunderstorm Watch | SPC | Bath, Bell, Bourbon, Boyle, Breathitt, Casey and 38 more | 4 hr |
| May 11, 5:55 AM CDT | Severe Thunderstorm Watch | SPC | Bell, Harlan | 5 hr |
Nearby
Tornado Watches in Illinois, 2003Tornado Watches in Indiana, 2003Tornado Watches in Missouri, 2003Every tornado 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.