Alert archive / Minnesota / Severe Thunderstorm Watches in 2017
Severe Thunderstorm Watch 420
The Storm Prediction Center issued this severe thunderstorm watch at Jul 19, 2017, 12:36 PM CDT for 13 counties in Iowa; 23 counties in Minnesota. It was in force for 5 hr.
The area
The outline as issued.
The facts
- Issued
- Jul 19, 2017, 12:36 PM CDT (17:36 UTC)
- Expired
- Jul 19, 2017, 6:00 PM CDT
- In force
- 5 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 2 in
- Strongest gust expected
- 70 kt
All 36 counties
Bremer County, IA, Butler County, IA, Cerro Gordo County, IA, Clay County, IA, Dickinson County, IA, Emmet County, IA, Hancock County, IA, Kossuth County, IA, Lyon County, IA, Osceola County, IA, Palo Alto County, IA, Winnebago County, IA, Worth County, IA, Blue Earth County, MN, Brown County, MN, Cottonwood County, MN, Faribault County, MN, Freeborn County, MN, Jackson County, MN, Le Sueur County, MN, Lincoln County, MN, Lyon County, MN, Martin County, MN, Murray County, MN, Nicollet County, MN, Nobles County, MN, Pipestone County, MN, Redwood County, MN, Renville County, MN, Rice County, MN, Rock County, MN, Sibley County, MN, Steele County, MN, Waseca County, MN, Watonwan County, MN, Yellow Medicine County, MN
The radar
The Sioux Falls radar (KFSD), 130 km from the middle of the area, began a volume at 17:39 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
- 2%
- Ten or more severe wind reports
- 80%
- One or more gusts of 65 knots or more
- 50%
- 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
- 90%
Warnings issued inside it
16 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 19, 1:15 PM CDT | Severe Thunderstorm Warning | FSD | Lincoln, Lyon | 45 min |
| Jul 19, 1:44 PM CDT | Severe Thunderstorm Warning | FSD | Lincoln, Lyon | 31 min |
| Jul 19, 2:06 PM CDT | Severe Thunderstorm Warning | MPX | Redwood | 39 min |
| Jul 19, 2:34 PM CDT | Severe Thunderstorm Warning | FSD | Cottonwood | 26 min |
| Jul 19, 2:38 PM CDT | Severe Thunderstorm Warning | MPX | Brown, Watonwan | 52 min |
| Jul 19, 2:51 PM CDT | Tornado Warning | MPX | Brown | 24 min |
| Jul 19, 3:11 PM CDT | Severe Thunderstorm Warning | MPX | Blue Earth, Brown, Nicollet, Watonwan | 34 min |
| Jul 19, 3:38 PM CDT | Severe Thunderstorm Warning | MPX | Blue Earth, Le Sueur, Rice, Waseca | 37 min |
| Jul 19, 3:46 PM CDT | Severe Thunderstorm Warning | DMX | Emmet, Kossuth | 44 min |
| Jul 19, 3:50 PM CDT | Severe Thunderstorm Warning | MPX | Faribault, Martin | 40 min |
| Jul 19, 3:57 PM CDT | Severe Thunderstorm Warning | MPX | Faribault, Freeborn | 18 min |
| Jul 19, 4:00 PM CDT | Severe Thunderstorm Warning | DMX | Hancock, Kossuth, Winnebago | 45 min |
| Jul 19, 4:06 PM CDT | Severe Thunderstorm Warning | MPX | Faribault, Freeborn, Steele, Waseca | 39 min |
| Jul 19, 4:19 PM CDT | Severe Thunderstorm Warning | DMX | Cerro Gordo, Hancock, Winnebago, Worth | 56 min |
| Jul 19, 4:40 PM CDT | Severe Thunderstorm Warning | MPX | Freeborn | 20 min |
| Jul 19, 5:22 PM CDT | Severe Thunderstorm Warning | DMX | Bremer, Butler | 38 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 |
|---|---|---|---|---|
| Jul 19, 12:11 PM CDT | Mesoscale Discussion | SPC | Bremer, Buena Vista, Butler, Cerro Gordo, Cherokee, Chickasaw and 20 more | 2 hr |
| Jul 19, 2:38 PM CDT | Mesoscale Discussion | SPC | Allamakee, Chickasaw, Howard, Winneshiek | 2 hr |
| Jul 19, 3:29 PM CDT | Severe Thunderstorm Watch | SPC | Allamakee, Chickasaw, Clayton, Fayette, Floyd, Howard and 2 more | 6 hr |
| Jul 19, 4:52 PM CDT | Severe Thunderstorm Watch | SPC | Lyon, Plymouth, Sioux, Woodbury | 6 hr |
| Jul 19, 5:11 PM CDT | Mesoscale Discussion | SPC | Buchanan, Clayton, Clinton, Delaware, Dubuque, Jackson and 1 more | 34 min |
| Jul 19, 5:45 PM CDT | Severe Thunderstorm Watch | SPC | Buchanan, Cedar, Clinton, Delaware, Dubuque, Jackson and 3 more | 6 hr |
| Jul 19, 6:32 PM CDT | Mesoscale Discussion | SPC | Allamakee, Chickasaw, Clayton, Fayette, Floyd, Howard and 2 more | 58 min |
| Jul 19, 9:55 AM CDT | Mesoscale Discussion | SPC | Lincoln, Lyon, Pipestone, Yellow Medicine | 2 hr |
| Jul 19, 9:59 AM CDT | Mesoscale Discussion | SPC | Kittson, Marshall, Pennington, Roseau | 3 hr |
| Jul 19, 1:13 PM CDT | Mesoscale Discussion | SPC | Blue Earth, Brown, Cottonwood, Jackson, Lincoln, Lyon and 5 more | 92 min |
| Jul 19, 2:46 PM CDT | Mesoscale Discussion | SPC | Blue Earth, Brown, Cottonwood, Faribault, Freeborn, Le Sueur and 5 more | 89 min |
Nearby
Severe Thunderstorm Watches in Minnesota, 2017Severe Thunderstorm Watches in Iowa, 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; radar from the NEXRAD Level II archive.