Alert archive / Indiana / Tornado Watches in 2003
Tornado Watch 335
The Storm Prediction Center issued this tornado watch at May 10, 2003, 8:30 AM CDT for 15 counties in Illinois; 32 counties in Indiana. It was in force for 6 hr.
The area
The outline as issued.
The facts
- Issued
- May 10, 2003, 8:30 AM CDT (13:30 UTC)
- Expired
- May 10, 2003, 2:00 PM CDT
- In force
- 6 hr
- Issued by
- the Storm Prediction Center
All 47 counties
Champaign County, IL, Clark County, IL, Clay County, IL, Coles County, IL, Crawford County, IL, Cumberland County, IL, Douglas County, IL, Edgar County, IL, Effingham County, IL, Jasper County, IL, Lawrence County, IL, Moultrie County, IL, Piatt County, IL, Richland County, IL, Vermilion County, IL, Bartholomew County, IN, Boone County, IN, Brown County, IN, Clay County, IN, Daviess County, IN, Decatur County, IN, Fountain County, IN, Greene County, IN, Hamilton County, IN, Hancock County, IN, Hendricks 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, Owen County, IN, Parke County, IN, Putnam County, IN, Rush County, IN, Scott County, IN, Shelby County, IN, Sullivan County, IN, Vermillion County, IN, Vigo County, IN
The radar
The Indianapolis radar (KIND), 98 km from the middle of the area, began a volume at 13:29 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
34 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 10, 8:52 AM CDT | Tornado Warning | ILX | Moultrie | 38 min |
| May 10, 8:56 AM CDT | Severe Thunderstorm Warning | ILX | Piatt | 34 min |
| May 10, 8:58 AM CDT | Severe Thunderstorm Warning | ILX | Edgar | 32 min |
| May 10, 9:02 AM CDT | Flash Flood Warning | ILX | Coles, Douglas, Edgar, Moultrie | 4 hr |
| May 10, 9:16 AM CDT | Severe Thunderstorm Warning | IND | Vermillion | 29 min |
| May 10, 9:21 AM CDT | Tornado Warning | ILX | Coles, Douglas | 54 min |
| May 10, 9:26 AM CDT | Flash Flood Warning | ILX | Champaign, Vermilion | 4 hr |
| May 10, 9:28 AM CDT | Severe Thunderstorm Warning | IND | Parke | 32 min |
| May 10, 9:44 AM CDT | Severe Thunderstorm Warning | IND | Vermillion | 31 min |
| May 10, 9:56 AM CDT | Tornado Warning | IND | Parke | 49 min |
| May 10, 10:06 AM CDT | Tornado Warning | ILX | Edgar | 54 min |
| May 10, 10:10 AM CDT | Severe Thunderstorm Warning | IND | Putnam | 50 min |
| May 10, 10:18 AM CDT | Tornado Warning | ILX | Clark, Coles, Cumberland | 42 min |
| May 10, 10:19 AM CDT | Flash Flood Warning | ILX | Clark, Cumberland, Effingham | 4 hr |
| May 10, 10:23 AM CDT | Tornado Warning | IND | Montgomery, Putnam | 52 min |
| May 10, 10:24 AM CDT | Severe Thunderstorm Warning | ILX | Effingham, Moultrie, Shelby | 51 min |
| May 10, 10:32 AM CDT | Flash Flood Warning | IND | Parke, Vermillion | 118 min |
| May 10, 10:47 AM CDT | Flash Flood Warning | IND | Montgomery | 118 min |
| May 10, 10:51 AM CDT | Flash Flood Warning | IND | Putnam | 114 min |
| May 10, 10:51 AM CDT | Tornado Warning | IND | Vigo | 39 min |
| May 10, 10:56 AM CDT | Tornado Warning | IND | Boone, Hendricks | 64 min |
| May 10, 11:00 AM CDT | Severe Thunderstorm Warning | ILX | Clark, Coles, Crawford, Cumberland, Edgar, Jasper | 60 min |
| May 10, 11:08 AM CDT | Tornado Warning | IND | Clay | 52 min |
| May 10, 11:14 AM CDT | Flash Flood Warning | IND | Boone, Hendricks | 61 min |
| May 10, 11:27 AM CDT | Severe Thunderstorm Warning | IND | Owen, Putnam | 48 min |
| May 10, 11:48 AM CDT | Flash Flood Warning | IND | Vigo | 27 min |
| May 10, 11:48 AM CDT | Severe Thunderstorm Warning | IND | Morgan | 42 min |
| May 10, 11:52 AM CDT | Flash Flood Warning | IND | Hamilton, Marion | 23 min |
| May 10, 12:15 PM CDT | Tornado Warning | IND | Morgan | 30 min |
| May 10, 12:17 PM CDT | Flash Flood Warning | IND | Delaware, Hancock, Henry, Madison | 118 min |
| May 10, 12:32 PM CDT | Tornado Warning | IND | Johnson | 28 min |
| May 10, 12:49 PM CDT | Severe Thunderstorm Warning | IND | Henry, Rush | 41 min |
| May 10, 12:59 PM CDT | Severe Thunderstorm Warning | IND | Shelby | 46 min |
| May 10, 1:15 PM CDT | Severe Thunderstorm Warning | IND | Decatur | 45 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, 1.5 hours before the alert went out and 117 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
- 474 J/kg
- Mixed-layer CIN
- -156 J/kg
- Mixed-layer LCL
- 763 m above ground
- 0-6 km bulk shear
- 50 kt
- 0-1 km storm-relative helicity
- 106 m²/s²
- 0-3 km storm-relative helicity
- 168 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.8
The text
As transmitted, in the capitals the NWS used until 2016.
000
WWUS20 KWNS 101328
SEL5
SPC WW 101330
ILZ000-INZ000-101900-
URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 335
NWS STORM PREDICTION CENTER NORMAN OK
830 AM EST SAT MAY 10 2003
THE NWS STORM PREDICTION CENTER HAS ISSUED A
TORNADO WATCH FOR PORTIONS OF
EAST CENTRAL ILLINOIS
CENTRAL INDIANA
EFFECTIVE THIS SATURDAY MORNING AND AFTERNOON FROM 830 AM UNTIL
200 PM EST.
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 ALONG AND 55 STATUTE MILES NORTH AND
SOUTH OF A LINE FROM 25 MILES WEST OF MATTOON 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...CONTINUE...WW 334...
DISCUSSION...ISOLATED STRONG/SEVERE STORMS ARE DEVELOPING EASTWARD
ACROSS CENTRAL IL INTO WESTERN IND...WHILE FURTHER DEVELOPMENT IS
OCCURRING NEAR STL. THESE STORMS WILL LIKELY MAINTAIN INTENSITY AS
THEY TRACK EASTWARD INTO CENTRAL IND. DAMAGING WINDS AND HAIL ARE
THE MAIN THREAT. HOWEVER...ISOLATED SUPERCELLS HAVE DEVELOPED AND
POTENTIAL EXISTS FOR ISOLATED TORNADOES.
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 26035.
...HART
401,0884 401,0852 383,0852 383,0884
WWUS20 KWNS 101328
SEL5
SPC WW 101330
ILZ000-INZ000-101900-
URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 335
NWS STORM PREDICTION CENTER NORMAN OK
830 AM EST SAT MAY 10 2003
THE NWS STORM PREDICTION CENTER HAS ISSUED A
TORNADO WATCH FOR PORTIONS OF
EAST CENTRAL ILLINOIS
CENTRAL INDIANA
EFFECTIVE THIS SATURDAY MORNING AND AFTERNOON FROM 830 AM UNTIL
200 PM EST.
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 ALONG AND 55 STATUTE MILES NORTH AND
SOUTH OF A LINE FROM 25 MILES WEST OF MATTOON 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...CONTINUE...WW 334...
DISCUSSION...ISOLATED STRONG/SEVERE STORMS ARE DEVELOPING EASTWARD
ACROSS CENTRAL IL INTO WESTERN IND...WHILE FURTHER DEVELOPMENT IS
OCCURRING NEAR STL. THESE STORMS WILL LIKELY MAINTAIN INTENSITY AS
THEY TRACK EASTWARD INTO CENTRAL IND. DAMAGING WINDS AND HAIL ARE
THE MAIN THREAT. HOWEVER...ISOLATED SUPERCELLS HAVE DEVELOPED AND
POTENTIAL EXISTS FOR ISOLATED TORNADOES.
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 26035.
...HART
401,0884 401,0852 383,0852 383,0884SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 9, 7:47 PM CDT | Mesoscale Discussion | SPC | Calhoun, Greene, Morgan, Pike, Scott | 88 min |
| May 9, 8:40 PM CDT | Mesoscale Discussion | SPC | Bond, Champaign, Christian, Clark, Clinton, Coles and 18 more | 2 hr |
| May 9, 10:04 PM CDT | Mesoscale Discussion | SPC | Adams | 26 min |
| May 9, 10:40 PM CDT | Severe Thunderstorm Watch | SPC | Brown, Cass, Champaign, DeWitt, Ford, Fulton and 22 more | 5 hr |
| May 10, 5:43 AM CDT | Mesoscale Discussion | SPC | Adams, Brown, Calhoun, Cass, Christian, Fulton and 15 more | 92 min |
| May 10, 5:50 AM CDT | Severe Thunderstorm Watch | SPC | Adams, Bond, Brown, Calhoun, Cass, Christian and 25 more | 5 hr |
| May 10, 9:25 AM CDT | Mesoscale Discussion | SPC | Edwards, Franklin, Gallatin, Hamilton, Hardin, Jackson and 14 more | 2 hr |
| May 10, 10:39 AM CDT | Mesoscale Discussion | SPC | Clark, Clay, Coles, Crawford, Cumberland, Douglas and 5 more | 2 hr |
| May 10, 10:54 AM CDT | Mesoscale Discussion | SPC | Adams, Alexander, Bond, Brown, Calhoun, Cass and 69 more | 66 min |
| May 10, 12:38 PM CDT | Mesoscale Discussion | SPC | Clay, Crawford, Jasper, Lawrence, Richland | 97 min |
| May 10, 3:17 PM CDT | Mesoscale Discussion | SPC | Hancock, Henderson, Mercer, Rock Island | 58 min |
| May 10, 3:50 PM CDT | Tornado Watch | SPC | Bureau, Carroll, Fulton, Henderson, Henry, Jo Daviess and 14 more | 6 hr |
| May 10, 4:00 PM CDT | Tornado Watch | SPC | Franklin, Jackson, Perry, Randolph, Union | 5 hr |
| May 10, 4:48 PM CDT | Mesoscale Discussion | SPC | Adams, Bond, Brown, Calhoun, Cass, Christian and 25 more | 87 min |
| May 10, 5:40 PM CDT | Tornado Watch | SPC | Adams, Bond, Brown, Calhoun, Cass, Christian and 21 more | 5 hr |
| May 10, 6:41 PM CDT | Mesoscale Discussion | SPC | Adams, Bond, Brown, Calhoun, Cass, Christian and 14 more | 64 min |
| May 10, 3:33 AM CDT | Mesoscale Discussion | SPC | Bartholomew, Boone, Brown, Clark, Crawford, Daviess and 41 more | 87 min |
| May 10, 11:00 AM CDT | Tornado Watch | SPC | Blackford, Dearborn, Delaware, Fayette, Franklin, Henry and 7 more | 5 hr |
| May 10, 1:04 PM CDT | Mesoscale Discussion | SPC | Blackford, Dearborn, Delaware, Fayette, Franklin, Henry and 7 more | 86 min |
Nearby
Tornado Watches in Indiana, 2003Tornado Watches in Illinois, 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.