Alert archive / Michigan / Severe Thunderstorm Warnings in 2020
Severe Thunderstorm Warning 41, NWS Marquette, MI
NWS Marquette, MI issued this severe thunderstorm warning at Aug 10, 2020, 8:42 AM CDT for Dickinson County, Marquette County, Menominee County, Michigan. It was in force for 33 min. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Aug 10, 2020, 8:42 AM CDT (13:42 UTC)
- Expired
- Aug 10, 2020, 9:15 AM CDT
- In force
- 33 min
- Issued by
- NWS Marquette, MI
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
Counties Dickinson County, MI, Marquette County, MI, Menominee County, MI
The radar
The Marquette radar (KMQT), 52 km from the middle of the area, began a volume at 13:45 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.
The nearest sounding before it
Alpena, MI (KAPX), launched 12:00Z, 1.7 hours before the alert went out and 423 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
- 1546 J/kg
- Mixed-layer CIN
- -47 J/kg
- Mixed-layer LCL
- 588 m above ground
- 0-6 km bulk shear
- 27 kt
- 0-1 km storm-relative helicity
- 142 m²/s²
- 0-3 km storm-relative helicity
- 91 m²/s²
- Significant tornado parameter
- 0.6
- Supercell composite
- 4.5
What forecasters said that day
The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Marquette, MI wrote its last area forecast discussion before this severe thunderstorm warning went out at Aug 10, 6:50 AM CDT, 1 hour 52 minutes earlier.
Area forecast discussion, Aug 10, 6:50 AM CDT, 1 hour 52 minutes before
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Hazardous Weather Outlook National Weather Service Marquette MI 431 AM EDT Mon Aug 10 2020 MIZ001>007-009>014-084-085-110845- Keweenaw-Ontonagon-Northern Houghton-Baraga-Marquette-Alger-Luce- Gogebic-Iron-Dickinson-Menominee-Delta-Southern Schoolcraft- Southern Houghton-Northern Schoolcraft- 431 AM EDT Mon Aug 10 2020 /331 AM CDT Mon Aug 10 2020/ This Hazardous Weather Outlook is for portions of western Upper Michigan and central Upper Michigan. .DAY ONE...Today and Tonight Scattered thunderstorms are expected this morning across the west half, then becoming more numerous across the east half this afternoon and evening. Heavy rain and gusty winds will be possible with thunderstorm activity. A moderate swim risk is expected for the Lake Michigan beaches of Schoolcraft County today. .DAYS TWO THROUGH SEVEN...Tuesday through Sunday No hazardous weather is expected at this time. .SPOTTER INFORMATION STATEMENT... Spotters are encouraged to report any observed hail or wind damage from thunderstorms to the National Weather Service in Marquette. The public may also submit reports to the National Weather Service via phone, on our website, or through Facebook or Twitter using #906wx. LSZ162-240>251-263>267-110845- Lake Superior west of a line from Saxon Harbor WI to Grand Portage MN beyond 5NM-Saxon Harbor WI to Black River MI- Black River to Ontonagon MI- Ontonagon to Upper Entrance of Portage Canal MI- Upper Entrance of Portage Canal to Eagle River MI- Eagle River to Manitou Island MI- Manitou Island to Point Isabelle MI- Point Isabelle to Lower Entrance of Portage Canal MI- Lower Entrance of Portage Canal To Huron Islands MI Including Keweenaw and Huron Bays-Huron Islands to Marquette MI- Marquette to Munising MI-Munising to Grand Marais MI- Grand Marais to Whitefish Point MI- Lake Superior from Saxon Harbor WI to Upper Entrance to Portage Canal MI 5NM off shore to the US/Canadian border including Isle Royale National Park- Lake Superior from Upper Entrance to Portage Canal to Manitou Island MI 5NM off shore to the US/Canadian Border- Lake Superior West of Line from Manitou Island to Marquette MI Beyond 5NM from shore- Lake Superior East of a line from Manitou Island to Marquette MI and West of a line from Grand Marais MI to the US/Canadian Border Beyond 5NM from shore- Lake Superior from Grand Marais MI to Whitefish Point MI 5NM off shore to the US/Canadian border- 431 AM EDT Mon Aug 10 2020 /331 AM CDT Mon Aug 10 2020/ This Hazardous Weather Outlook is for portions of Eastern Lake Superior...Central Lake Superior and Western Lake Superior. .DAY ONE...Today and Tonight Areas of dense fog will remain possible through mid-day, especially over northern Lake Superior. Thunderstorms remain possible today, especially this afternoon over eastern Lake Superior. Heavy rain and gusty winds will be possible with thunderstorm activity. .DAYS TWO THROUGH SEVEN...Tuesday through Sunday No hazardous weather is expected at this time. .SPOTTER INFORMATION STATEMENT... The need for weather spotter reports is not anticipated at this time. LMZ221-248-250-110845- Green Bay North of line from Cedar River MI to Rock Island Passage-Seul Choix Point to Point Detour MI- 5NM East of a line from Fairport MI to Rock Island Passage- 431 AM EDT Mon Aug 10 2020 This Hazardous Weather Outlook is for portions of Northern Lake Michigan. .DAY ONE...Today and Tonight Thunderstorms are expected today, especially this afternoon and evening. Heavy rain and gusty winds will be possible with thunderstorm activity. .DAYS TWO THROUGH SEVEN...Tuesday through Sunday No hazardous weather is expected at this time. .SPOTTER INFORMATION STATEMENT... The need for weather spotter reports is not anticipated at this time. Ritzman
In the hours before
Local storm report, Aug 10, 8:00 AM CDT, 42 minutes before
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</html>Local storm report, Aug 10, 8:21 AM CDT, 21 minutes before
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</html>Local storm report, Aug 10, 8:33 AM CDT, 9 minutes before
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</html>The office that day
Everything else NWS Marquette, MI issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 9, 7:11 PM CDT | Special Marine Warning | MQT | 64 min | |
| Aug 9, 7:13 PM CDT | Severe Thunderstorm Warning | MQT | Houghton, Ontonagon | 32 min |
| Aug 9, 7:32 PM CDT | Severe Thunderstorm Warning | MQT | Houghton, Ontonagon | 28 min |
| Aug 9, 7:43 PM CDT | Special Weather Statement | MQT | Ontonagon | 47 min |
| Aug 9, 7:57 PM CDT | Severe Thunderstorm Warning | MQT | Houghton | 33 min |
| Aug 9, 8:05 PM CDT | Severe Thunderstorm Warning | MQT | Houghton, Keweenaw | 13 min |
| Aug 9, 8:08 PM CDT | Severe Thunderstorm Warning | MQT | Houghton | 26 min |
| Aug 9, 8:09 PM CDT | Special Marine Warning | MQT | 36 min | |
| Aug 9, 8:15 PM CDT | Special Marine Warning | MQT | 90 min | |
| Aug 9, 8:31 PM CDT | Special Weather Statement | MQT | Baraga, Houghton, Iron | 29 min |
| Aug 9, 8:32 PM CDT | Areal Flood Advisory | MQT | Baraga, Houghton, Ontonagon | 3 hr |
| Aug 9, 8:44 PM CDT | Severe Thunderstorm Warning | MQT | Iron | 46 min |
| Aug 9, 8:47 PM CDT | Special Marine Warning | MQT | 88 min | |
| Aug 9, 8:52 PM CDT | Severe Thunderstorm Warning | MQT | Baraga, Houghton | 23 min |
| Aug 9, 9:13 PM CDT | Special Weather Statement | MQT | Marquette | 62 min |
| Aug 9, 9:16 PM CDT | Flash Flood Warning | MQT | Houghton | 3 hr |
| Aug 9, 9:23 PM CDT | Severe Thunderstorm Warning | MQT | Dickinson, Iron | 37 min |
| Aug 9, 9:28 PM CDT | Severe Thunderstorm Warning | MQT | Baraga, Iron, Marquette | 32 min |
| Aug 9, 9:53 PM CDT | Severe Thunderstorm Warning | MQT | Dickinson, Marquette | 52 min |
| Aug 9, 9:59 PM CDT | Special Marine Warning | MQT | 80 min | |
| Aug 9, 9:59 PM CDT | Tornado Warning | MQT | Dickinson | 31 min |
| Aug 9, 10:00 PM CDT | Tornado Warning | MQT | Iron | 15 min |
| Aug 9, 10:35 PM CDT | Special Weather Statement | MQT | Alger | 40 min |
| Aug 9, 10:50 PM CDT | Special Marine Warning | MQT | 40 min | |
| Aug 9, 11:16 PM CDT | Special Weather Statement | MQT | Delta | 44 min |
| Aug 10, 8:49 AM CDT | Special Weather Statement | MQT | Marquette | 41 min |
| Aug 10, 9:11 AM CDT | Severe Thunderstorm Warning | MQT | Alger, Delta, Dickinson, Marquette | 49 min |
| Aug 10, 9:28 AM CDT | Special Marine Warning | MQT | 47 min | |
| Aug 10, 9:29 AM CDT | Small Craft Advisory | MQT | 6 hr | |
| Aug 10, 9:55 AM CDT | Severe Thunderstorm Warning | MQT | Alger, Schoolcraft | 35 min |
| Aug 10, 10:06 AM CDT | Special Marine Warning | MQT | 39 min | |
| Aug 10, 11:05 AM CDT | Special Weather Statement | MQT | Dickinson | 40 min |
| Aug 10, 11:22 AM CDT | Special Weather Statement | MQT | Luce | 23 min |
| Aug 10, 11:31 AM CDT | Severe Thunderstorm Warning | MQT | Dickinson, Marquette, Menominee | 44 min |
| Aug 10, 11:44 AM CDT | Severe Thunderstorm Warning | MQT | Luce | 16 min |
| Aug 10, 11:55 AM CDT | Special Weather Statement | MQT | Alger | 35 min |
| Aug 10, 11:59 AM CDT | Special Marine Warning | MQT | 15 min | |
| Aug 10, 12:09 PM CDT | Severe Thunderstorm Warning | MQT | Delta, Dickinson, Marquette, Menominee | 32 min |
| Aug 10, 12:27 PM CDT | Special Marine Warning | MQT | 33 min | |
| Aug 10, 12:31 PM CDT | Special Weather Statement | MQT | Alger | 44 min |
| Aug 10, 12:47 PM CDT | Special Weather Statement | MQT | Dickinson | 28 min |
| Aug 10, 1:09 PM CDT | Severe Thunderstorm Warning | MQT | Dickinson, Menominee | 51 min |
| Aug 10, 1:52 PM CDT | Severe Thunderstorm Warning | MQT | Delta, Menominee | 38 min |
| Aug 10, 2:07 PM CDT | Special Marine Warning | MQT | 98 min | |
| Aug 10, 2:25 PM CDT | Special Weather Statement | MQT | Schoolcraft | 35 min |
| Aug 10, 2:43 PM CDT | Severe Thunderstorm Warning | MQT | Menominee | 47 min |
| Aug 10, 2:52 PM CDT | Special Marine Warning | MQT | 53 min | |
| Aug 10, 3:10 PM CDT | Severe Thunderstorm Warning | MQT | Menominee | 35 min |
| Aug 10, 3:29 PM CDT | Special Weather Statement | MQT | Luce | 31 min |
| Aug 10, 3:42 PM CDT | Small Craft Advisory | MQT | 30 hr |
Nearby
Severe Thunderstorm Warnings in Michigan, 2020Every severe thunderstorm warning 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.