Alert archive / Indiana / Tornado Watches in 2002
Tornado Watch 695
The Storm Prediction Center issued this tornado watch at Sep 20, 2002, 12:35 PM EST for 27 counties in Indiana; 13 counties in Ohio. It was in force for 5 hr.
The area
The outline as issued.
The facts
- Issued
- Sep 20, 2002, 12:35 PM EST (17:35 UTC)
- Expired
- Sep 20, 2002, 6:00 PM EST
- In force
- 5 hr
- Issued by
- the Storm Prediction Center
All 40 counties
Adams County, IN, Allen County, IN, Blackford County, IN, Boone County, IN, Clinton County, IN, DeKalb County, IN, Delaware County, IN, Grant County, IN, Hamilton County, IN, Hancock County, IN, Hendricks County, IN, Henry County, IN, Howard County, IN, Huntington County, IN, Jay County, IN, LaGrange County, IN, Madison County, IN, Marion County, IN, Miami County, IN, Noble County, IN, Randolph County, IN, Steuben County, IN, Tipton County, IN, Wabash County, IN, Wayne County, IN, Wells County, IN, Whitley County, IN, Allen County, OH, Auglaize County, OH, Darke County, OH, Defiance County, OH, Fulton County, OH, Henry County, OH, Lucas County, OH, Mercer County, OH, Paulding County, OH, Putnam County, OH, Van Wert County, OH, Williams County, OH, Wood County, OH
The radar
The Northern Indiana radar (KIWX), 94 km from the middle of the area, began a volume at 17:35 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
17 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 20, 1:08 PM EST | Severe Thunderstorm Warning | IND | Hendricks | 37 min |
| Sep 20, 1:22 PM EST | Tornado Warning | IND | Johnson, Marion | 38 min |
| Sep 20, 1:46 PM EST | Tornado Warning | IND | Hancock | 44 min |
| Sep 20, 1:58 PM EST | Tornado Warning | IND | Marion | 17 min |
| Sep 20, 2:06 PM EST | Tornado Warning | IND | Madison | 54 min |
| Sep 20, 2:07 PM EST | Severe Thunderstorm Warning | IND | Hamilton | 23 min |
| Sep 20, 2:44 PM EST | Tornado Warning | IND | Delaware | 46 min |
| Sep 20, 2:49 PM EST | Tornado Warning | IWX | Blackford, Grant | 56 min |
| Sep 20, 3:14 PM EST | Severe Thunderstorm Warning | IWX | Allen, Putnam | 46 min |
| Sep 20, 3:19 PM EST | Severe Thunderstorm Warning | IND | Randolph | 41 min |
| Sep 20, 3:21 PM EST | Severe Thunderstorm Warning | ILN | Fayette, Wayne | 39 min |
| Sep 20, 3:27 PM EST | Severe Thunderstorm Warning | IWX | Jay | 33 min |
| Sep 20, 3:31 PM EST | Tornado Warning | IWX | Adams, Wells | 44 min |
| Sep 20, 3:45 PM EST | Severe Thunderstorm Warning | ILN | Darke, Mercer | 45 min |
| Sep 20, 3:59 PM EST | Severe Thunderstorm Warning | IWX | Van Wert | 46 min |
| Sep 20, 3:59 PM EST | Tornado Warning | IWX | Putnam | 31 min |
| Sep 20, 4:14 PM EST | Severe Thunderstorm Warning | ILN | Auglaize, Shelby | 61 min |
The nearest sounding before it
Cncnati-Daytn, OH (KILN), launched 12:00Z, 5.6 hours before the alert went out and 186 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
- 339 J/kg
- Mixed-layer CIN
- -46 J/kg
- Mixed-layer LCL
- 850 m above ground
- 0-6 km bulk shear
- 39 kt
- 0-1 km storm-relative helicity
- 153 m²/s²
- 0-3 km storm-relative helicity
- 179 m²/s²
- Significant tornado parameter
- 0.3
- Supercell composite
- 1.5
The text
As transmitted, in the capitals the NWS used until 2016.
000 WWUS20 KWNS 201734 SEL5 SPC WW 201735 INZ000-OHZ000-LEZ000-202300- URGENT - IMMEDIATE BROADCAST REQUESTED TORNADO WATCH NUMBER 695 STORM PREDICTION CENTER NORMAN OK 1135 AM CST FRI SEP 20 2002 THE STORM PREDICTION CENTER HAS ISSUED A TORNADO WATCH FOR PORTIONS OF NORTHERN AND CENTRAL INDIANA NORTHWESTERN OHIO LAKE ERIE EFFECTIVE THIS FRIDAY MORNING AND AFTERNOON FROM 1135 AM UNTIL 500 PM CST. TORNADOES...HAIL TO 1 INCH IN DIAMETER...THUNDERSTORM WIND GUSTS TO 70 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS. THE TORNADO WATCH AREA IS ALONG AND 60 STATUTE MILES EAST AND WEST OF A LINE FROM 25 MILES EAST OF INDIANAPOLIS INDIANA TO 30 MILES WEST NORTHWEST OF TOLEDO OHIO. 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 693...WW 694... DISCUSSION...SEVERE THUNDERSTORMS HAVE DEVELOPED INTO SRN IN AHEAD OF EJECTING TROUGH FROM CENTRAL PLAINS. WITH VERY MOIST AND UNSTABLE AIRMASS IN PLACE AND STRONG DEEP LAYER SHEAR...EXPECT SEVERE THUNDERSTORMS TO DEVELOP NEWD ACROSS WATCH AREA DURING AFTERNOON. SUPERCELLS AND ISOLATED TORNADOES LIKELY GIVEN FAVORABLE SHEAR. AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT TO 1 INCH...EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 60 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 550. MEAN STORM MOTION VECTOR 22040. ...HALES 394,0865 414,0853 414,0831 394,0844
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 20, 11:30 AM EST | Tornado Watch | SPC | Bartholomew, Brown, Clark, Clay, Crawford, Daviess and 32 more | 6 hr |
| Sep 20, 3:30 PM EST | Severe Thunderstorm Watch | SPC | Adams, Ashland, Brown, Butler, Champaign, Clark and 36 more | 6 hr |
Nearby
Tornado Watches in Indiana, 2002Tornado Watches in Ohio, 2002Every tornado watch in 2002
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.