Alert archive / Indiana / Tornado Watches in 2003
Tornado Watch 670
The Storm Prediction Center issued this tornado watch at Jul 7, 2003, 5:30 PM EST for 34 counties in Indiana; Berrien County, Michigan; 19 counties in Ohio. It was in force for 6 hr.
The area
The outline as issued.
The facts
- Issued
- Jul 7, 2003, 5:30 PM EST (22:30 UTC)
- Expired
- Jul 7, 2003, 11:00 PM EST
- In force
- 6 hr
- Issued by
- the Storm Prediction Center
All 54 counties
Adams County, IN, Allen County, IN, Blackford County, IN, Carroll County, IN, Cass County, IN, Clinton County, IN, DeKalb County, IN, Delaware County, IN, Elkhart County, IN, Fulton County, IN, Grant County, IN, Hamilton County, IN, Henry County, IN, Howard County, IN, Huntington County, IN, Jay County, IN, Kosciusko County, IN, LaGrange County, IN, LaPorte County, IN, Madison County, IN, Marshall County, IN, Miami County, IN, Noble County, IN, Pulaski County, IN, Randolph County, IN, Saint Joseph County, IN, Starke County, IN, Steuben County, IN, Tippecanoe County, IN, Tipton County, IN, Wabash County, IN, Wells County, IN, White County, IN, Whitley County, IN, Berrien County, MI, Allen County, OH, Auglaize County, OH, Champaign County, OH, Clark County, OH, Darke County, OH, Defiance County, OH, Fulton County, OH, Hancock County, OH, Hardin County, OH, Henry County, OH, Logan County, OH, Mercer County, OH, Miami County, OH, Paulding County, OH, Putnam County, OH, Shelby County, OH, Van Wert County, OH, Williams County, OH, Wood County, OH
The radar
The Northern Indiana radar (KIWX), 34 km from the middle of the area, began a volume at 22:30 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.
Discussions around it
SPC mesoscale discussions over the same counties from four hours before the watch to its end.
The nearest sounding before it
Cncnati-Daytn, OH (KILN), launched 12:00Z, 10.5 hours before the alert went out and 235 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
- 41 J/kg
- Mixed-layer CIN
- -219 J/kg
- Mixed-layer LCL
- 1266 m above ground
- 0-6 km bulk shear
- 32 kt
- 0-1 km storm-relative helicity
- 45 m²/s²
- 0-3 km storm-relative helicity
- 56 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.1
The text
As transmitted, in the capitals the NWS used until 2016.
000
WWUS20 KWNS 072228
SEL0
SPC WW 072230
INZ000-OHZ000-LMZ000-080400-
URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 670
NWS STORM PREDICTION CENTER NORMAN OK
530 PM EST MON JUL 7 2003
THE NWS STORM PREDICTION CENTER HAS ISSUED A
TORNADO WATCH FOR PORTIONS OF
NORTHERN AND CENTRAL INDIANA
WESTERN OHIO
LAKE MICHIGAN
EFFECTIVE THIS MONDAY AFTERNOON AND EVENING FROM 530 PM UNTIL 1100
PM EST.
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 ALONG AND 65 STATUTE MILES NORTH AND
SOUTH OF A LINE FROM 45 MILES NORTH OF LAFAYETTE INDIANA TO 30
MILES SOUTH SOUTHEAST OF FINDLAY 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 667...WW 668...WW 669...
DISCUSSION...THUNDERSTORMS/SUPERCELLS EXPECTED TO DEVELOP INVOF
DIFFUSE OUTFLOW BOUNDARIES ORIENTED NW/SE ACROSS CNTRL AND NRN IND.
IF SUSTAINED STORMS DO INDEED FORM...MODERATE /40 KT/ DEEP
SHEAR...STRONG DEGREE OF UPSTREAM INSTABILITY /MEAN MIXED CAPE AOA
3500 J/KG/ AND HIGH SURFACE DEWPOINTS SUGGEST THREAT FOR A TORNADO
OR TWO IN ADDITION TO LARGE HAIL AND EVENTUAL BOWING STRUCTURES WITH
HIGH WIND.
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 600.
MEAN STORM MOTION VECTOR 29030.
...CORFIDI
420,0865 413,0832 394,0832 400,0865
WWUS20 KWNS 072228
SEL0
SPC WW 072230
INZ000-OHZ000-LMZ000-080400-
URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 670
NWS STORM PREDICTION CENTER NORMAN OK
530 PM EST MON JUL 7 2003
THE NWS STORM PREDICTION CENTER HAS ISSUED A
TORNADO WATCH FOR PORTIONS OF
NORTHERN AND CENTRAL INDIANA
WESTERN OHIO
LAKE MICHIGAN
EFFECTIVE THIS MONDAY AFTERNOON AND EVENING FROM 530 PM UNTIL 1100
PM EST.
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 ALONG AND 65 STATUTE MILES NORTH AND
SOUTH OF A LINE FROM 45 MILES NORTH OF LAFAYETTE INDIANA TO 30
MILES SOUTH SOUTHEAST OF FINDLAY 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 667...WW 668...WW 669...
DISCUSSION...THUNDERSTORMS/SUPERCELLS EXPECTED TO DEVELOP INVOF
DIFFUSE OUTFLOW BOUNDARIES ORIENTED NW/SE ACROSS CNTRL AND NRN IND.
IF SUSTAINED STORMS DO INDEED FORM...MODERATE /40 KT/ DEEP
SHEAR...STRONG DEGREE OF UPSTREAM INSTABILITY /MEAN MIXED CAPE AOA
3500 J/KG/ AND HIGH SURFACE DEWPOINTS SUGGEST THREAT FOR A TORNADO
OR TWO IN ADDITION TO LARGE HAIL AND EVENTUAL BOWING STRUCTURES WITH
HIGH WIND.
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 600.
MEAN STORM MOTION VECTOR 29030.
...CORFIDI
420,0865 413,0832 394,0832 400,0865SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 6, 8:46 PM EST | Mesoscale Discussion | SPC | Adams, Allen, Benton, Blackford, Carroll, Cass and 32 more | 59 min |
| Jul 6, 11:10 PM EST | Severe Thunderstorm Watch | SPC | Bartholomew, Boone, Brown, Clinton, Dearborn, Decatur and 21 more | 3 hr |
| Jul 6, 11:51 PM EST | Mesoscale Discussion | SPC | Bartholomew, Boone, Brown, Clinton, Dearborn, Decatur and 21 more | 114 min |
| Jul 7, 8:30 AM EST | Mesoscale Discussion | SPC | Adams, Allen, Benton, Blackford, Boone, Carroll and 39 more | 60 min |
| Jul 7, 8:45 AM EST | Severe Thunderstorm Watch | SPC | Adams, Allen, Benton, Blackford, Carroll, Cass and 29 more | 4 hr |
| Jul 7, 10:14 AM EST | Mesoscale Discussion | SPC | Adams, Allen, Benton, Blackford, Boone, Carroll and 45 more | 61 min |
| Jul 7, 11:30 AM EST | Severe Thunderstorm Watch | SPC | Fayette, Henry, Jay, Randolph, Rush, Union and 1 more | 6 hr |
| Jul 7, 12:14 PM EST | Mesoscale Discussion | SPC | Adams, Allen, Bartholomew, Blackford, Boone, Brown and 42 more | 61 min |
| Jul 7, 4:34 PM EST | Mesoscale Discussion | SPC | Allen, Benton, Blackford, Boone, Carroll, Cass and 44 more | 56 min |
| Jul 7, 12:54 PM EST | Mesoscale Discussion | SPC | Dickinson, Iron | 66 min |
| Jul 7, 2:35 PM EST | Mesoscale Discussion | SPC | Delta, Dickinson, Marquette, Menominee | 115 min |
| Jul 7, 4:42 PM EST | Mesoscale Discussion | SPC | Chippewa, Luce, Mackinac, Schoolcraft | 3 hr |
| Jul 7, 1:56 PM EST | Mesoscale Discussion | SPC | Ashland, Belmont, Carroll, Champaign, Clark, Columbiana and 42 more | 94 min |
| Jul 7, 2:10 PM EST | Severe Thunderstorm Watch | SPC | Athens, Belmont, Carroll, Columbiana, Guernsey, Harrison and 12 more | 6 hr |
| Jul 7, 5:52 PM EST | Mesoscale Discussion | SPC | Athens, Belmont, Carroll, Columbiana, Gallia, Geauga and 15 more | 53 min |
Nearby
Tornado Watches in Indiana, 2003Tornado Watches in Ohio, 2003Tornado Watches in Michigan, 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.