Slow moving showers and thunderstorms dumped heavy rain on portions of central lower Michigan on the night of the 22nd. Southern Gladwin County was impacted by resulting high water, though flooding was much more substantial just downstate.
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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 APX wrote it up.
Slow moving showers and thunderstorms dumped heavy rain on portions of central lower Michigan on the night of the 22nd. Southern Gladwin County was impacted by resulting high water, though flooding was much more substantial just downstate.
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 Gaylord, MI wrote its last area forecast discussion before the first event at Jun 22, 11:43 PM EST, 2 hours 47 minutes earlier.
Area Forecast Discussion National Weather Service Gaylord MI 1243 AM EDT Fri Jun 23 2017 .NEAR TERM...(This morning through Tonight) Issued at 1237 AM EDT Fri Jun 23 2017 ...Widespread showers and thunderstorms end this morning... High impact weather potential...Still some heavy rain concerns through early this morning. Pattern synopsis/forecast...Convective cold pool augmented cold front making slow southeast progress into central lower Michigan at this early hour. Heavy rain producing thunderstorms broke out along and just ahead of this front, mostly across central lower Michigan (a good 75 miles south of what nearly all of last nights guidance indicated). Core of upper level forcing tied to robust jet core bringing mostly lighter showers further north. Strong mid level shortwave trough and attendant surface low pinwheeling east into western Ontario, with secondary vort max extending south into the northern Mississippi Valley. This vort will race east and shear out in the process, with it and eastward progression of upper jet core forcing a much quicker east exit to the cold front and overhead deep moisture plume this morning. A much less moist airmass will follow, quickly ending the rain threat this morning, and bringing much quieter weather through tonight. Primary forecast concerns/challenges...Addressing lingering heavy rain concern early this morning. Details...Still will be dealing with convection through early this morning, with the focus for much of the stronger activity expected to be down near Saginaw Bay. Overnight storms have easily produced inch per hour rainfall rates across central lower Michigan, and see no reason not to see similar rates in the far southeast yet for a time this morning. Storms have remained transit, so expect rainfall totals to not get too out of hand. Still, given such rainfall efficiency, would expect to see ponding on area roadways and poor drainage areas. Drier air makes steady southeast progress later this morning into this afternoon, spreading across all our area by later today. May see just enough lingering moisture to kick off a few diurnally driven light showers across northeast lower Michigan late this morning and early afternoon. Cool air aloft and lake augmented secondary surface trough/zone of enhanced convergence might do the same this afternoon across eastern upper. Dry condtions expected elsewhere after this mornings lingering activity. Temperatures will not be too far off from those experienced yesterday, but it will feel more comfortable as dewpoints begin to tank this afternoon. Dry conditions expected tonight as northwest flow continues. A noticeable cooler night with temperatures ranging in the upper 40s to middle 50s. May see a bit of patchy fog in those sheltered low lying areas. && .SHORT TERM...(Friday night through Sunday) Issued at 316 PM EDT Thu Jun 22 2017 ...Cooler with (mainly) daytime showers/storms... High Impact Weather Potential...Low risk for not severe thunderstorms Saturday and Sunday afternoon. Pattern Synopsis/Forecast...Long wave troughing persists across much of Canada and into the northern plains/Great Lakes region with long wave ridging building northward along the west coast...toward the Gulf of Alaska. Closed/occluding low pressure/short wave energy moving through the mean trough is sliding through south-central Canada...with an occluded/cold front arcing into the upper Midwest then back to secondary low pressure in the central plains. Occluded low pressure system slides through Ontario/far northern lakes region through Friday kicking the front through the state. Cooler weather arrives for the weekend along with the possibility for daytime instability showers/possibly thunder...with shower activity augmented by the passage of a secondary short wave late Saturday night into Sunday. Primary Forecast Concerns...Minimal. There will be a low end risk for thunderstorms Saturday afternoon and a little better chance for thunderstorms Sunday afternoon...with daytime heating and as colder air aloft slides over the region (core of -22C 500 MB air moves through Sunday). Best chances will likely be across north-central and northeast lower Michigan with prevailing westerly flow. But aside from any brief pulse-severe hailer with low wet-bulb zero heights...severe weather risk will be minimal. Otherwise...cool once again through Sunday with high temperatures in the middle 60s to around 70 both days (coolest on Sunday) and a good 10 to 15 degrees below normal. .LONG TERM...(Sunday night through Thursday) Issued at 316 PM EDT Thu Jun 22 2017 The extended forecast, Monday through Thursday, indicates a slow warming trend across the Great Lakes next week, with a few rounds of rain showers expected. At upper levels, a broad upper trough which settled over the Great Lakes and Hudson Bay during the weekend, will slowly exit east of the region Wednesday, while an upper ridge strengthens over the Plains and pushes into the state Thursday. 850mb temps in this pattern will warm from around 5c to begin the upcoming work week, to around 12c Thursday in the developing upper ridge. The upper lvl pattern will help surface temperatures warm from below normal readings in the upper 60s to around 70 degrees thru Tuesday, before warming into the mid 70s Thursday. && .AVIATION...(For the 06Z TAFS through 06Z Friday night) Issued at 1150 PM EDT Thu Jun 22 2017 Showers/storms overnight, departing late into Fri morning. Cold front pushing into eastern upper MI late Thu evening, and will continue across northern lower MI overnight. Showers/t-storms will continue at times ahead of the front, impacting primarily MBL and to a lesser degree TVC/APN. Expect a period of lower cigs overnight as the front passes, though less so than earlier thought (no worse than MVFR). Cigs will improve on Friday to VFR. Westerly winds, veering nw into Fri evening. May get a bit gusty Fri afternoon, especially at PLN. && .MARINE... Issued at 316 PM EDT Thu Jun 22 2017 Gradient winds and waves not expected to be of any issue over the next several days. Generally southerly winds will turn more westerly overnight into Friday morning behind the passing of a cold front. Gusty and erratic winds will be possible within periods of showers and scattered thunderstorms that will be associated with this front, with the strongest of activity this evening to a few hours past midnight. There is a small chance for a storm or two to become severe across the srn nearshore waters, but that chance is fairly low. Expect some very heavy rainfall however. Skies open up through the day Friday, with cooler and drier air increasing over the region. Additional scattered showers and a few potential storms through the weekend, mainly in the afternoons. && .APX WATCHES/WARNINGS/ADVISORIES... MI...NONE. LH...NONE. LM...NONE. LS...NONE. && UPDATE...JZ NEAR TERM...MSB SHORT TERM...TBA LONG TERM...SWR AVIATION...JZ MARINE...SMD
Hazardous Weather Outlook National Weather Service Gaylord MI 947 PM EDT Thu Jun 22 2017 LHZ345>349-LMZ323-341-342-344>346-LSZ321-322-MIZ008-015>036-041- 042-231200- Straits of Mackinac within 5 nm of Mackinac Bridge including Mackinac Island-St Ignace to False Detour Channel- 5NM East of Mackinac Bridge to Presque Isle Light MI including Bois Blanc Island- Presque Isle Light to Sturgeon Pt MI Including Thunder Bay National Marine Sanctuary-Sturgeon Pt to Alabaster MI- Grand Traverse Bay south of a line Grand Traverse Light to Norwood MI-Seul Choix Point to 5NM West of Mackinac Bridge- Norwood MI to 5NM West of Mackinac Bridge including Little Traverse Bay-Sleeping Bear Point to Grand Traverse Light MI- Point Betsie to Sleeping Bear Point MI- Manistee to Point Betsie MI- Whitefish Bay (U.S. Portion)/Whitefish Point to Point Iroquois MI- St. Marys River Point Iroquois to E. Potagannissing Bay-Chippewa- Mackinac-Emmet-Cheboygan-Presque Isle-Charlevoix-Leelanau-Antrim- Otsego-Montmorency-Alpena-Benzie-Grand Traverse-Kalkaska-Crawford- Oscoda-Alcona-Manistee-Wexford-Missaukee-Roscommon-Ogemaw-Iosco- Gladwin-Arenac- 947 PM EDT Thu Jun 22 2017 This hazardous weather outlook is for northern Lower Michigan... eastern Upper Michigan...and adjacent nearshore waters of Lake Michigan...Lake Huron and Lake Superior. .DAY ONE...tonight. Scattered to numerous thunderstorms will occur tonight, primarily south of M-32. Severe thunderstorms are not expected. However, locally heavy rain will occur, especially as you head further south into central lower Michigan. Localized 1 to 2 inch rain amounts are expected south of M-72, which could result in standing water in places that drain poorly. .DAYS TWO THROUGH SEVEN...Friday through Wednesday. Thunderstorms are again possible across portions of the outlook area this weekend and again Wednesday, especially during the afternoon hours. .SPOTTER INFORMATION STATEMENT... Spotter activation may be required later this afternoon and evening. && For more information visit http://weather.gov/gaylord.
The NCL Michigan radar (KAPX), 125 km away, was scanning. The volume nearest the first event began at 07:32 UTC.
1 flash flood, 1 flood. Local standard time, as filed.
Rainfall of 3.20 was measured in Gladwin; heavier rains fell in the southern portion of Gladwin County. A number of roads were flooded, and several were washed out.
High water continued through the day on the 23rd, with the tributaries of Wixom Lake (Edenville Dam Pond) seeing the greatest rise. Water entered a few homes located near creeks and streams in the area.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Michigan in 2017Every state in 2017This day in weather historyWarnings in Michigan, June 2017
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: 718143, 718144.