25 inches of rainfall and causing minor street flooding.
Every event with a place to put it. Tap one for its entry below.
Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.
The episode as NWS MQT wrote it up.
A cluster of thunderstorms moved through the Escanaba area on the evening of the 9th bringing radar estimates of 1 to 1.25 inches of rainfall and causing minor street flooding.
The local office's own words before the first event, 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 the first event at Aug 8, 6:16 AM EST, 1 hour 29 minutes earlier.
Area Forecast Discussion National Weather Service Marquette MI 716 AM EDT Sun Aug 8 2021 .SHORT TERM...(Today and tonight) Issued at 459 AM EDT SUN AUG 8 2021 Latest water vapor loop shows three main areas of ongoing convection. One is over eastern WI and central Lower Mi, a second is over northern IA and southwest WI and a third is over the eastern Dakotas and far west-central MN. At present, generally light shower activity is noted over mainly the central and eastern U.P per radar loop with thunderstorms for the most part staying south into northeast WI. A moist and generally upslope/onshore se/e flow is resulting is widespread stratus and patchy fog across much of the U.P early this morning as temps have stayed mainly in the 60s. How the models handle these ongoing areas of convection and associated mesoscale features across the region will be the main determining factor on the weather in Upper Mi for the next 24 hours or so. Not any one of the CAMs has a great handle initializing the ongoing convection, but I would have to say a blend of the latest HRRR/RAP and HiResW-FV3 come the closest so will try to utilize these models for forecast details. It looks like the convection just to the south into northeast WI and central Lower Mi would only brush south central and eastern portions with some light shower activity through sunrise. The next features to watch will be an MCV from convection over eastern IA and then the convection over the eastern Dakotas which is associated with a shortwave trough. As the shortwave trough lifts slowly east through the day into tonight, the MCV associated with the convection over eastern IA will lift northeast ahead of it into the Upper Great Lakes. This feature could reinvigorate shower and thunderstorm activity mainly into south central and eastern portions of the cwa this afternoon and evening so have placed higher chc to likely PoPs over these counties. With MUCAPE values approaching 1000 j/kg and deep layer shear values around 30 knots, I suppose it wouldn't be out of the question that there could be a stronger storm this afternoon and evening into southern Menominee County which could produce marginally severe wind gusts and hail. With considerable cloud cover expected across much of area, I knocked down max temps closer to cooler ConsAll guidance with highs most interior locations in the mid to upper 70s. Expect lows tonight mostly in the 60s under continued cloud cover. .LONG TERM...(Monday through Saturday) Issued at 415 AM EDT SUN AUG 8 2021 During this long term period, we'll see the transition from quasi- zonal flow to a more amplified pattern across northern CONUS. This will give the region a few opportunities for some showers and thunderstorms through mid-week before upstream ridging over the western half of North America puts us into northwest flow aloft with high pressure at the surface for the weekend. Starting out on Monday, the persistent and slow moving upper level shortwave trough transiting the region today will linger into Monday. With its anticipated slow progression eastward through the day, the better chances of precip will start out across the central and into the east through the day. With the aid of southwest flow and continued moisture advection, expecting a pretty humid day with dewpoints climbing near 70F! Coupled with highs climbing to low to mid 80s, it'll certainly feel uncomfortable outside for some. Overnight, ridging will build into the region. Height rises and increasing subsidence will help skies to break up from west to east. As a nighttime inversion sets up, trapped low level moisture might result in some fog, particularly in areas that received some rain during the day. Lows are expected to be mild, with most staying in the mid to upper 60s. Ridging should edge eastward during the day Tuesday. With skies allowing some sunshine down to the surface, continued southerly flow will make for a warm day across the area. Most are progged to climb above 85F, and downsloping areas could flirt with 90F. Again coupled with dewpoints near 70F, it could be an uncomfortable day outside for some. A cold front will move in from the west late in the day. 0z guidance has trended toward stronger deep shear with more instability being available simultaneously, where as previous runs didn't have these features collocated. With this change and added steep mid-level lapse rates, strong to severe weather could be possible across the western parts of the lake and western counties. Another hazard with any thunderstorms will be the potential for heavy rain. A secondary and dry trough might follow by Wednesday morning before height rises clear out the skies. Wednesday, again, is expected to be a warm one with highs in the 80s across the area. The next trough looks to swing through late Thursday into Thursday night. After this, upscale pattern amplification will result in northwest flow setting up over the region going into the weekend. At the surface, high pressure is expected to build in and help maintain a cooler, dry forecast through at least the early parts of the following week. Some caveats to this could be sneaky shortwaves riding the top of the ridge. && .AVIATION...(For the 12Z TAFS through 12Z Monday morning) Issued at 710 AM EDT SUN AUG 8 2021 Low clouds continue this morning across the area as the boundary layer remains moist from recent shower activity. As the warm front to the south of the TAF sites continues to lift north, expect another round of showers and t-storms to move across central and eastern Upper Mi, mainly impacting KSAW. IFR conditions at KIWD and KSAW will slowly improve to MVFR this afternoon but then conditions will likely lower back down to IFR/LIFR late tonight as moist conditions linger over the area. VLIFR conditions at KCMX will improve through the morning to IFR and then to MVFR this afternoon before lowering back down to LIFR late tonight again. && .MARINE...(For the 4 AM Lake Superior forecast issuance) Issued at 459 AM EDT SUN AUG 8 2021 Fairly weak low pressure systems moving across the lake will result in southeast to south wind 10 to 20 knots into Tuesday. A slightly stronger trough moving through Tuesday night into Wednesday will bring winds around to west-southwest but wind speeds should still remain 10 to 20 knots. A more prominent cold front will move through on Thursday with north winds 10 to 20 knots Thursday night into early Friday in its wake. && .MQT WATCHES/WARNINGS/ADVISORIES... Upper Michigan... None. Lake Superior... None. Lake Michigan... None. && SHORT TERM...Voss LONG TERM...JP AVIATION...Voss MARINE...Voss
Hazardous Weather Outlook National Weather Service Marquette MI 357 AM EDT Sun Aug 8 2021 MIZ001>007-009>014-084-085-090800- Keweenaw-Ontonagon-Northern Houghton-Baraga-Marquette-Alger-Luce- Gogebic-Iron-Dickinson-Menominee-Delta-Southern Schoolcraft- Southern Houghton-Northern Schoolcraft- 357 AM EDT Sun Aug 8 2021 /257 AM CDT Sun Aug 8 2021/ This Hazardous Weather Outlook is for portions of western Upper Michigan and central Upper Michigan. .DAY ONE...Today and Tonight There is a chance of thunderstorms tonight, mainly across south- central and eastern Upper Michigan. There is a moderate swim risk this afternoon for Lake Michigan beaches of Schoolcraft County. .DAYS TWO THROUGH SEVEN...Monday through Saturday There is a chance of thunderstorms Monday and Monday night. There will also be a chance for thunderstorms Tuesday afternoon and night. Some storms could be strong to severe. There is a moderate swim risk Monday morning for Lake Michigan beaches of Schoolcraft County. .SPOTTER INFORMATION STATEMENT... The need for weather spotter reports is not anticipated at this time. LSZ162-240>251-263>267-090800- 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- 357 AM EDT Sun Aug 8 2021 /257 AM CDT Sun Aug 8 2021/ This Hazardous Weather Outlook is for portions of Eastern Lake Superior...Central Lake Superior and Western Lake Superior. .DAY ONE...Today and Tonight There is a chance of thunderstorms today and this evening for parts of eastern Lake Superior. .DAYS TWO THROUGH SEVEN...Monday through Saturday There is a chance of thunderstorms Monday and Monday night across eastern Lake Superior. Another round of thunderstorms will be possible Tuesday afternoon through Tuesday night across the entire lake. Some strong to severe storms will be possible. .SPOTTER INFORMATION STATEMENT... The need for weather spotter reports is not anticipated at this time. LMZ221-248-250-090800- 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- 357 AM EDT Sun Aug 8 2021 This Hazardous Weather Outlook is for portions of Northern Lake Michigan. .DAY ONE...Today and Tonight There will be a chance for thunderstorms this afternoon and tonight. .DAYS TWO THROUGH SEVEN...Monday through Saturday There is a chance of thunderstorms Monday through Monday night and again Tuesday afternoon and evening. .SPOTTER INFORMATION STATEMENT... The need for weather spotter reports is not anticipated at this time. JP
The national radar mosaic for the moment the first event began.
1 heavy rain. Local standard time, as filed.
Report described flooding between 3rd and 5th Ave on Lincoln (M35/US41) as insane with flooding up to the car doors. Radar estimates were between 1 and 1.25 inches in a little over an hour.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Michigan in 2021Every state in 2021This day in weather historyWarnings in Michigan, August 2021
NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-09-24. Each event’s entry at NCEI: 978662.