Alert archive / Michigan / Severe Thunderstorm Watches in 2020
Severe Thunderstorm Watch 307
The Storm Prediction Center issued this severe thunderstorm watch at Jun 26, 2020, 7:57 PM EDT for 20 counties in Indiana; 25 counties in Michigan; 8 counties in Ohio. It was in force for 7 hr.
The area
The outline as issued.
The facts
- Issued
- Jun 26, 2020, 7:57 PM EDT (23:57 UTC)
- Expired
- Jun 27, 2020, 2:59 AM EDT
- In force
- 7 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 1.5 in
- Strongest gust expected
- 65 kt
All 53 counties
Adams County, IN, Allen County, IN, Blackford County, IN, DeKalb County, IN, Elkhart County, IN, Fulton County, IN, Huntington County, IN, Jay 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, Wabash County, IN, Wells County, IN, Whitley County, IN, Allegan County, MI, Barry County, MI, Berrien County, MI, Branch County, MI, Calhoun County, MI, Cass County, MI, Clinton County, MI, Eaton County, MI, Hillsdale County, MI, Ingham County, MI, Ionia County, MI, Jackson County, MI, Kalamazoo County, MI, Kent County, MI, Lenawee County, MI, Livingston County, MI, Macomb County, MI, Monroe County, MI, Oakland County, MI, Ottawa County, MI, Saint Clair County, MI, Saint Joseph County, MI, Van Buren County, MI, Washtenaw County, MI, Wayne County, MI, Allen County, OH, Defiance County, OH, Fulton County, OH, Henry County, OH, Paulding County, OH, Putnam County, OH, Van Wert County, OH, Williams County, OH
The radar
The Grand Rapids radar (KGRR), 64 km from the middle of the area, began a volume at 23:54 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
- 5%
- Ten or more severe wind reports
- 60%
- One or more gusts of 65 knots or more
- 30%
- Ten or more severe hail reports
- 30%
- One or more hailstones of 2 inches or more
- 20%
- Six or more combined severe hail and wind reports
- 80%
Warnings issued inside it
21 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 26, 8:57 PM EDT | Severe Thunderstorm Warning | GRR | Van Buren | 65 min |
| Jun 26, 9:04 PM EDT | Severe Thunderstorm Warning | IWX | LaPorte, Saint Joseph | 56 min |
| Jun 26, 9:05 PM EDT | Severe Thunderstorm Warning | IWX | Berrien, Cass, Saint Joseph | 25 min |
| Jun 26, 9:27 PM EDT | Severe Thunderstorm Warning | GRR | Kalamazoo | 48 min |
| Jun 26, 9:31 PM EDT | Severe Thunderstorm Warning | IWX | LaPorte, Marshall, Saint Joseph, Starke | 44 min |
| Jun 26, 9:34 PM EDT | Severe Thunderstorm Warning | IWX | Elkhart, Saint Joseph | 41 min |
| Jun 26, 9:54 PM EDT | Severe Thunderstorm Warning | IWX | LaPorte, Saint Joseph | 36 min |
| Jun 26, 9:54 PM EDT | Severe Thunderstorm Warning | GRR | Calhoun | 66 min |
| Jun 26, 10:00 PM EDT | Severe Thunderstorm Warning | IWX | LaPorte, Starke | 45 min |
| Jun 26, 10:14 PM EDT | Severe Thunderstorm Warning | IWX | Elkhart, Kosciusko, LaGrange, Marshall, Noble, Saint Joseph | 46 min |
| Jun 26, 10:22 PM EDT | Severe Thunderstorm Warning | DTX | Washtenaw | 38 min |
| Jun 26, 10:23 PM EDT | Severe Thunderstorm Warning | IWX | Fulton, Kosciusko, LaPorte, Marshall, Saint Joseph, Starke | 54 min |
| Jun 26, 10:26 PM EDT | Severe Thunderstorm Warning | IWX | Branch, Hillsdale, Saint Joseph | 64 min |
| Jun 26, 10:31 PM EDT | Severe Thunderstorm Warning | GRR | Jackson | 59 min |
| Jun 26, 10:54 PM EDT | Severe Thunderstorm Warning | IWX | DeKalb, LaGrange, Noble, Steuben | 51 min |
| Jun 26, 11:04 PM EDT | Severe Thunderstorm Warning | GRR | Ingham | 16 min |
| Jun 26, 11:07 PM EDT | Severe Thunderstorm Warning | IWX | Allen, DeKalb, Huntington, Noble, Whitley | 53 min |
| Jun 26, 11:07 PM EDT | Severe Thunderstorm Warning | DTX | Livingston, Washtenaw | 53 min |
| Jun 26, 11:09 PM EDT | Severe Thunderstorm Warning | DTX | Lenawee, Monroe, Washtenaw, Wayne | 66 min |
| Jun 26, 11:22 PM EDT | Severe Thunderstorm Warning | IWX | DeKalb | 38 min |
| Jun 26, 11:39 PM EDT | Severe Thunderstorm Warning | DTX | Macomb, Oakland, Wayne | 59 min |
Discussions around it
SPC mesoscale discussions over the same counties from four hours before the watch to its end.
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 26, 2:38 PM EDT | Severe Thunderstorm Watch | SPC | Lake, Porter | 8 hr |
| Jun 26, 7:39 PM EDT | Mesoscale Discussion | SPC | DeKalb, Elkhart, Kosciusko, LaGrange, LaPorte, Marshall and 5 more | 66 min |
Nearby
Severe Thunderstorm Watches in Michigan, 2020Severe Thunderstorm Watches in Indiana, 2020Severe Thunderstorm Watches in Ohio, 2020Every severe thunderstorm watch in 2020
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; radar from the NEXRAD Level II archive.