Alert archive / Michigan / Severe Thunderstorm Watches in 2017
Severe Thunderstorm Watch 45
The Storm Prediction Center issued this severe thunderstorm watch at Feb 28, 2017, 7:37 PM EST for 14 counties in Indiana; 20 counties in Michigan; 9 counties in Ohio. It was in force for 8 hr.
The area
The outline as issued.
The facts
- Issued
- Feb 28, 2017, 7:37 PM EST (00:37 UTC)
- Expired
- Mar 1, 2017, 4:00 AM EST
- In force
- 8 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 2 in
- Strongest gust expected
- 60 kt
All 43 counties
Allen County, IN, DeKalb County, IN, Elkhart County, IN, Fulton County, IN, Kosciusko County, IN, LaGrange County, IN, LaPorte County, IN, Marshall County, IN, Noble County, IN, Pulaski County, IN, Saint Joseph County, IN, Starke County, IN, Steuben County, IN, Whitley County, IN, Allegan County, MI, Barry County, MI, Berrien County, MI, Branch County, MI, Calhoun County, MI, Cass County, MI, Eaton County, MI, Hillsdale County, MI, Ingham County, MI, Jackson County, MI, Kalamazoo County, MI, Lenawee County, MI, Livingston County, MI, Macomb County, MI, Monroe County, MI, Oakland County, MI, Saint Joseph County, MI, Van Buren County, MI, Washtenaw County, MI, Wayne County, MI, Defiance County, OH, Fulton County, OH, Henry County, OH, Lucas County, OH, Ottawa County, OH, Paulding County, OH, Sandusky County, OH, Williams County, OH, Wood County, OH
The radar
The Northern Indiana radar (KIWX), 89 km from the middle of the area, began a volume at 00:37 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.
What SPC expected
The probabilities SPC published with the watch, for the watch area over its life.
- Two or more tornadoes
- 20%
- One or more EF2 to EF5 tornadoes
- 10%
- Ten or more severe wind reports
- 30%
- One or more gusts of 65 knots or more
- 10%
- Ten or more severe hail reports
- 50%
- One or more hailstones of 2 inches or more
- 30%
- Six or more combined severe hail and wind reports
- 70%
Warnings issued inside it
35 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Feb 28, 8:06 PM EST | Severe Thunderstorm Warning | IWX | LaPorte, Saint Joseph | 54 min |
| Feb 28, 8:52 PM EST | Severe Thunderstorm Warning | IWX | Elkhart, LaPorte, Saint Joseph | 53 min |
| Feb 28, 9:15 PM EST | Severe Thunderstorm Warning | IWX | LaPorte | 30 min |
| Feb 28, 9:36 PM EST | Tornado Warning | IWX | LaPorte, Saint Joseph | 39 min |
| Feb 28, 9:40 PM EST | Severe Thunderstorm Warning | IWX | Branch, Hillsdale, Saint Joseph | 50 min |
| Feb 28, 9:45 PM EST | Severe Thunderstorm Warning | IWX | Elkhart, LaPorte, Saint Joseph | 45 min |
| Feb 28, 9:50 PM EST | Severe Thunderstorm Warning | GRR | Calhoun | 40 min |
| Feb 28, 9:54 PM EST | Tornado Warning | IWX | Branch, Hillsdale | 36 min |
| Feb 28, 9:59 PM EST | Severe Thunderstorm Warning | IWX | Cass, Saint Joseph | 46 min |
| Feb 28, 10:01 PM EST | Tornado Warning | IWX | Elkhart, Saint Joseph | 29 min |
| Feb 28, 10:09 PM EST | Severe Thunderstorm Warning | IWX | LaPorte, Saint Joseph | 39 min |
| Feb 28, 10:17 PM EST | Flash Flood Warning | IWX | Elkhart, LaPorte, Saint Joseph | 6 hr |
| Feb 28, 10:29 PM EST | Tornado Warning | IWX | Elkhart, LaGrange | 31 min |
| Feb 28, 10:52 PM EST | Tornado Warning | IWX | LaGrange, Steuben | 23 min |
| Feb 28, 11:12 PM EST | Tornado Warning | IWX | Steuben | 31 min |
| Feb 28, 11:22 PM EST | Severe Thunderstorm Warning | IWX | Hillsdale | 37 min |
| Feb 28, 11:33 PM EST | Severe Thunderstorm Warning | DTX | Lenawee | 46 min |
| Feb 28, 11:38 PM EST | Severe Thunderstorm Warning | DTX | Washtenaw | 32 min |
| Feb 28, 11:38 PM EST | Tornado Warning | IWX | Fulton | 18 min |
| Feb 28, 11:56 PM EST | Severe Thunderstorm Warning | DTX | Monroe, Wayne | 49 min |
| Mar 1, 12:40 AM EST | Severe Thunderstorm Warning | IWX | LaPorte, Saint Joseph | 65 min |
| Mar 1, 12:55 AM EST | Severe Thunderstorm Warning | CLE | Ashland, Crawford, Hancock, Holmes, Huron, Knox and 9 more | 65 min |
| Mar 1, 12:56 AM EST | Severe Thunderstorm Warning | IWX | Fulton, LaPorte, Marshall, Pulaski, Starke | 49 min |
| Mar 1, 1:01 AM EST | Severe Thunderstorm Warning | IWX | LaPorte, Marshall, Saint Joseph, Starke | 44 min |
| Mar 1, 1:22 AM EST | Severe Thunderstorm Warning | IWX | Pulaski, White | 38 min |
| Mar 1, 1:30 AM EST | Severe Thunderstorm Warning | IWX | Elkhart, Kosciusko, LaGrange, Marshall, Noble, Saint Joseph | 45 min |
| Mar 1, 1:35 AM EST | Severe Thunderstorm Warning | IWX | Branch, Cass, Saint Joseph | 40 min |
| Mar 1, 1:43 AM EST | Severe Thunderstorm Warning | IWX | Fulton, Kosciusko, Marshall, Pulaski, Starke | 34 min |
| Mar 1, 2:06 AM EST | Severe Thunderstorm Warning | IWX | Allen, DeKalb, Kosciusko, LaGrange, Noble, Steuben and 1 more | 39 min |
| Mar 1, 2:29 AM EST | Severe Thunderstorm Warning | IWX | Allen, DeKalb, Steuben, Whitley | 61 min |
| Mar 1, 2:31 AM EST | Tornado Warning | IWX | Allen | 29 min |
| Mar 1, 2:59 AM EST | Severe Thunderstorm Warning | IWX | Adams, Allen, Blackford, Grant, Huntington, Jay and 2 more | 46 min |
| Mar 1, 3:18 AM EST | Severe Thunderstorm Warning | CLE | Hancock, Lucas, Ottawa, Sandusky, Seneca, Wood | 42 min |
| Mar 1, 3:23 AM EST | Severe Thunderstorm Warning | IWX | Allen, Paulding, Putnam, Van Wert | 52 min |
| Mar 1, 3:59 AM EST | Severe Thunderstorm Warning | CLE | Crawford, Erie, Hancock, Ottawa, Sandusky, Seneca and 2 more | 61 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
Detroit, MI (KDTX), launched 00:00Z, 0.6 hours before the alert went out and 171 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
- 8 J/kg
- Mixed-layer CIN
- -323 J/kg
- Mixed-layer LCL
- 464 m above ground
- 0-6 km bulk shear
- 60 kt
- 0-1 km storm-relative helicity
- 384 m²/s²
- 0-3 km storm-relative helicity
- 383 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.1
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Feb 28, 7:00 PM EST | Mesoscale Discussion | SPC | Adams, Allen, Cass, DeKalb, Elkhart, Fulton and 14 more | 90 min |
| Feb 28, 8:46 PM EST | Mesoscale Discussion | SPC | Brown, Crawford, Daviess, Dubois, Gibson, Greene and 14 more | 119 min |
| Feb 28, 9:29 PM EST | Tornado Watch | SPC | Bartholomew, Brown, Clark, Clay, Crawford, Daviess and 34 more | 12 hr |
| Feb 28, 9:41 PM EST | Mesoscale Discussion | SPC | Allen, DeKalb, Elkhart, Fulton, Kosciusko, LaGrange and 9 more | 94 min |
| Feb 28, 10:51 PM EST | Tornado Watch | SPC | Benton, Jasper, Lake, Newton, Porter | 6 hr |
| Feb 28, 11:03 PM EST | Mesoscale Discussion | SPC | Adams, Allen, Bartholomew, Blackford, Boone, Carroll and 48 more | 117 min |
| Feb 28, 11:09 PM EST | Mesoscale Discussion | SPC | Crawford, Daviess, Dubois, Gibson, Knox, Lawrence and 6 more | 66 min |
| Feb 28, 11:29 PM EST | Tornado Watch | SPC | Adams, Allen, Blackford, Boone, Carroll, Cass and 41 more | 8 hr |
| Mar 1, 12:52 AM EST | Mesoscale Discussion | SPC | Benton, Elkhart, Fulton, Jasper, LaPorte, Marshall and 7 more | 53 min |
| Mar 1, 1:44 AM EST | Mesoscale Discussion | SPC | Adams, Allen, Blackford, Boone, Carroll, Cass and 28 more | 61 min |
| Mar 1, 2:32 AM EST | Mesoscale Discussion | SPC | Clark, Crawford, Dearborn, Dubois, Floyd, Harrison and 11 more | 88 min |
| Mar 1, 4:03 AM EST | Tornado Watch | SPC | Gibson, Pike, Posey, Spencer, Vanderburgh, Warrick | 5 hr |
| Mar 1, 5:19 AM EST | Mesoscale Discussion | SPC | Harrison, Perry, Posey, Spencer, Vanderburgh, Warrick | 56 min |
| Mar 1, 5:57 AM EST | Tornado Watch | SPC | Clark, Crawford, Dearborn, Dubois, Floyd, Franklin and 9 more | 5 hr |
| Mar 1, 2:19 AM EST | Mesoscale Discussion | SPC | Ashland, Ashtabula, Belmont, Carroll, Columbiana, Coshocton and 22 more | 86 min |
| Mar 1, 3:24 AM EST | Severe Thunderstorm Watch | SPC | Ashland, Ashtabula, Crawford, Cuyahoga, Erie, Geauga and 22 more | 4 hr |
| Mar 1, 6:28 AM EST | Mesoscale Discussion | SPC | Adams, Gallia, Lawrence, Scioto | 2 hr |
| Mar 1, 6:48 AM EST | Severe Thunderstorm Watch | SPC | Athens, Gallia, Jackson, Lawrence, Meigs, Morgan and 3 more | 5 hr |
| Mar 1, 8:28 AM EST | Mesoscale Discussion | SPC | Gallia, Lawrence | 92 min |
| Mar 1, 3:56 PM EST | Mesoscale Discussion | SPC | Athens, Belmont, Carroll, Columbiana, Coshocton, Fairfield and 26 more | 2 hr |
Nearby
Severe Thunderstorm Watches in Michigan, 2017Severe Thunderstorm Watches in Indiana, 2017Severe Thunderstorm Watches in Ohio, 2017Every severe thunderstorm watch in 2017
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.