Alert archive / Michigan / Tornado Warnings in 2026

Tornado Warning 11, NWS Detroit, MI

May 17, 2026Huron County, Sanilac County, Michigan

NWS Detroit, MI issued this tornado warning at May 17, 2026, 6:49 PM EDT for Huron County, Sanilac County, Michigan. It was in force for 41 min. 3 reports came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued
May 17, 2026, 6:49 PM EDT (22:49 UTC)
Expired
May 17, 2026, 7:30 PM EDT
In force
41 min
Issued by
NWS Detroit, MI
Area
Storm-based polygon
Tornado
Radar indicated
Hail
2.0 in

Counties Huron County, MI, Sanilac County, MI

The radar

The Detroit radar (KDTX), 117 km from the middle of the area, began a volume at 22:51 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 was reported inside it

TimeReportWhereRemark
May 17, 7:06 PM EDTHAIL 11 S Ubly, MIMedia relayed a photo of roughly quarter sized hail near Ubly.
May 17, 7:26 PM EDTHAIL 1.75Ruth, MIMedia relayed a public report of golf ball sized hail in Ruth.
May 17, 7:26 PM EDTHAIL 2.5Ruth, MIMedia relayed a photo of roughly 2.5 inch hailstone in Ruth.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

Did it verify

Not verified. The Iowa Environmental Mesonet's Cow found no qualifying storm report inside this tornado warning while it was in force. That is not proof nothing happened: reports are thin where few people live.

Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.

The nearest sounding before it

Detroit, MI (KDTX), launched 12:00Z, 10.8 hours before the alert went out and 114 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.

Skew-T log-pSkew-T log-p diagram, Detroit, MI at 12:00Z on 2026-05-17Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 77 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Detroit, MI at 12:00Z on 2026-05-17The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 42 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
77 J/kg
Mixed-layer CIN
-179 J/kg
Mixed-layer LCL
1215 m above ground
0-6 km bulk shear
31 kt
0-1 km storm-relative helicity
42 m²/s²
0-3 km storm-relative helicity
46 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

382 
WFUS53 KDTX 172249
TORDTX
MIC063-151-172330-
/O.NEW.KDTX.TO.W.0011.260517T2249Z-260517T2330Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Detroit/Pontiac MI
649 PM EDT Sun May 17 2026

The National Weather Service in Detroit/Pontiac has issued a

* Tornado Warning for...
  Northern Sanilac County in southeastern Michigan...
  Southeastern Huron County in southeastern Michigan...

* Until 730 PM EDT.

* At 649 PM EDT, a severe thunderstorm capable of producing a tornado
  was located near Argyle, or 7 miles east of Cass City, moving east
  at 40 mph.

  HAZARD...Tornado and hail up to two inches in diameter.

  SOURCE...Radar indicated rotation.

  IMPACT...Flying debris will be dangerous to those caught without 
           shelter. Mobile homes will be damaged or destroyed. 
           Damage to roofs, windows, and vehicles will occur.  Tree 
           damage is likely.

* This dangerous storm will be near...
  Ubly around 655 PM EDT.
  Forestville around 710 PM EDT.

Other locations impacted by this tornadic thunderstorm include Tyre,
Ruth, Parisville, Palms, White Rock, Minden, Richmondville, and New
Greenleaf.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.

&&

LAT...LON 4358 8311 4368 8312 4375 8258 4374 8258
      4357 8255
TIME...MOT...LOC 2249Z 269DEG 35KT 4362 8303 

TORNADO...RADAR INDICATED
MAX HAIL SIZE...2.00 IN

$$

AM
3 follow-up statements
948 
WWUS53 KDTX 172259
SVSDTX

Severe Weather Statement
National Weather Service Detroit/Pontiac MI
659 PM EDT Sun May 17 2026

MIC063-151-172330-
/O.CON.KDTX.TO.W.0011.000000T0000Z-260517T2330Z/
Sanilac MI-Huron MI-
659 PM EDT Sun May 17 2026

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 730 PM EDT FOR NORTHERN
SANILAC AND SOUTHEASTERN HURON COUNTIES...

At 658 PM EDT, a severe thunderstorm capable of producing a tornado
was located near Ubly, moving east at 30 mph.

HAZARD...Tornado and two inch hail.

SOURCE...Radar indicated rotation.

IMPACT...Flying debris will be dangerous to those caught without 
         shelter. Mobile homes will be damaged or destroyed. Damage 
         to roofs, windows, and vehicles will occur.  Tree damage is 
         likely.

This dangerous storm will be near...
  Forestville around 720 PM EDT.

Other locations impacted by this tornadic thunderstorm include Tyre,
Ruth, Parisville, Palms, White Rock, Minden, Richmondville, and New
Greenleaf.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.

&&

LAT...LON 4358 8301 4368 8310 4375 8258 4374 8258
      4357 8255
TIME...MOT...LOC 2258Z 259DEG 25KT 4366 8298 

TORNADO...RADAR INDICATED
MAX HAIL SIZE...2.00 IN

$$

SC
277 
WWUS53 KDTX 172314
SVSDTX

Severe Weather Statement
National Weather Service Detroit/Pontiac MI
714 PM EDT Sun May 17 2026

MIC063-151-172330-
/O.CON.KDTX.TO.W.0011.000000T0000Z-260517T2330Z/
Sanilac MI-Huron MI-
714 PM EDT Sun May 17 2026

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 730 PM EDT FOR NORTH
CENTRAL SANILAC AND SOUTHEASTERN HURON COUNTIES...

At 713 PM EDT, a severe thunderstorm capable of producing a tornado
was located near Ubly, moving east at 35 mph.

HAZARD...Tornado and two inch hail.

SOURCE...Radar indicated rotation.

IMPACT...Flying debris will be dangerous to those caught without 
         shelter. Mobile homes will be damaged or destroyed. Damage 
         to roofs, windows, and vehicles will occur.  Tree damage is 
         likely.

This dangerous storm will be near...
  Forestville around 720 PM EDT.

Other locations impacted by this tornadic thunderstorm include White
Rock, Tyre, Ruth, Minden, and Parisville.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.

&&

LAT...LON 4362 8288 4370 8295 4375 8258 4374 8258
      4362 8256
TIME...MOT...LOC 2313Z 264DEG 30KT 4368 8283 

TORNADO...RADAR INDICATED
MAX HAIL SIZE...2.00 IN

$$

SC
794 
WWUS53 KDTX 172326
SVSDTX

Severe Weather Statement
National Weather Service Detroit/Pontiac MI
726 PM EDT Sun May 17 2026

MIC063-151-172336-
/O.EXP.KDTX.TO.W.0011.000000T0000Z-260517T2330Z/
Sanilac MI-Huron MI-
726 PM EDT Sun May 17 2026

...THE TORNADO WARNING FOR NORTH CENTRAL SANILAC AND SOUTHEASTERN
HURON COUNTIES WILL EXPIRE AT 730 PM EDT...

The storm which prompted the warning has weakened below severe
limits, and no longer appears capable of producing a tornado.
Therefore, the warning will be allowed to expire.  However, small
hail is still possible with this thunderstorm.

&&

LAT...LON 4362 8288 4370 8295 4375 8258 4374 8258
      4362 8256
TIME...MOT...LOC 2326Z 269DEG 35KT 4368 8266 

$$

SC

What forecasters said that day

The local office's own words before this tornado warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Detroit, MI wrote its last area forecast discussion before this tornado warning went out at May 17, 2:54 PM EDT, 3 hours 55 minutes earlier. Its key messages:

  • There is a chance for severe thunderstorms late this afternoon and evening, mainly along and north of I-69. Damaging winds, large hail and isolated tornadoes.
  • The risk for severe weather exists again Monday and Tuesday mainly during the afternoon and evening. Warm and windy conditions will also prevail.
  • Cooler conditions can be expected Wednesday and Thursday.
Area forecast discussion, May 17, 2:54 PM EDT, 3 hours 55 minutes before
Area Forecast Discussion
National Weather Service Detroit/Pontiac MI
254 PM EDT Sun May 17 2026

.KEY MESSAGES...

- There is a chance for severe thunderstorms late this afternoon and
  evening, mainly along and north of I-69. Damaging winds, large
  hail and isolated tornadoes.

- The risk for severe weather exists again Monday and Tuesday mainly
  during the afternoon and evening. Warm and windy conditions will
  also prevail.

- Cooler conditions can be expected Wednesday and Thursday.

&&

.DISCUSSION...

Ongoing surface analysis and trends show an increasingly more
buoyant/unstable airmass advecting northward toward a quasi
stationary front extending across the southern Saginaw Valley and
thumb. This may provide a focus more more robust convective
development later this afternoon/evening. Ascent will be aided by
broad mid level height falls associated with an MCV that will track
across nrn Lower Mi late this afternoon and evening. The latest RAP
indicates surface based Cape nearing 2k J/kg feeding into the
frontal boundary this evening. Respectable bulk shear and low level
helicity values will favor supercells, with damaging winds, large
hail and an isolated tornado remaining the primary severe weather
hazards. Convective chances will decrease farther south due to
weaker forcing.

Subtle short wave ridging will build across Lower Mi overnight in
the wake of the MCS passing across nrn Lower Mi. This will suppress
convective development late tonight into Mon morning. Remnant
boundary layer moisture convergence along the frontal boundary
around the Saginaw Bay and thumb region may support some localized
fog. Although strengthening low level wind fields overnight will
largely be elevated from the nocturnal boundary layer, model
solutions indicate enough boundary layer flow to drive the front
north of the forecast area by daybreak Monday, placing the entire
forecast area in the warm sector. The light flow combined with
elevated sfc dewpoints will warrant relative mild nighttime lows in
the 60s.

Diurnal mixing will result in warm and windy conditions on Monday.
While temperatures look to make another run into the 80s, the
potential for late day convection supports leaning toward the lower
end of the model guidance spectrum (low to mid 80s for highs).
Convection timing and coverage will depend heavily on the upscale
convective growth upstream tonight. There is reasonable agreement
among the 12Z hi res suite that convectively induced short wave
features will traverse Se Mi Monday afternoon/evening, coinciding
with peak diurnal destabilization. The forced ascent would also erode
the mid level capping inversion, resulting in scattered to possibly
numerous thunderstorms. Weak to moderate instability with good cape
density will result in a chance for severe storms, with damaging
winds and large hail being the primary severe weather hazards.

Severe chances will be the forecast concern again on Tuesday
associated with a cold front forecast to pass across Se Mi late
afternoon/evening. This front will be associated with a more
amplified mid level wave forecast across the northern Great Lakes
region. Deeply sheared profiles within moderate instability will
again support strong to severe convection. Warm and windy conditions
will also prevail in the prefrontal environment. Model soundings
indicate 30 to 35 knots in the mixed layer, which may result in wind
gusts approaching 40 MPH outside of any convection. Strong high
pressure will expand across the region in the wake of the front by
Wednesday, resulting in cooler and dry conditions.

&&

.MARINE...

Cold front has stalled over southern Lake Huron this afternoon, with
southerly winds to its south and northeast winds to its north. Main
marine concern this afternoon-evening is potential for strong to
severe thunderstorm development along the front and/or lake breezes
that have pushed inland from Saginaw Bay, Lake St. Clair, and Lake
Erie. All modes of severe weather are in play. Lingering
thunderstorms push north across Lake Huron tonight, although the
severe threat wanes after sunset. Unsettled conditions continue for
the first half of the week as warm and breezy southerly flow
supplies plenty of instability to the Great Lakes. Wind gusts for
the Lake Huron shoreline/Lake St. Clair approach 30 knots Monday-
Tuesday, although an isolated gale force gust over Saginaw Bay
Tuesday cannot be entirely ruled out. Small Craft Advisories are in
effect for Monday and will be needed again Tuesday. Strong to severe
thunderstorm chances exist both afternoons as well. A strong cold
front Tuesday night results in a pattern shift for mid-week,
bringing a quieter, more seasonable pattern to the Great Lakes.

&&

.PREV DISCUSSION...
Issued at 108 PM EDT Sun May 17 2026

AVIATION...

A warm front located between KFNT and KMBS will be the focus for
convective initiation this afternoon and evening, bringing the
chance to see scattered to numerous thunderstorms. Probabilities to
see thunderstorm activity will be higher across KMBS given the
location of the front, but will retain the TEMPO in KFNT until radar
and satellite imagery better define where initiation will take
place. Confidence for showers and thunderstorms will be much lower
for locations south, but cannot rule out some isolated development
within the warm sector. Confidence is too low to retain the PROB30
for thunderstorms at this time. Otherwise a 4-6kft cu field will
range from sct-bkn during daylight hours alongside mid to high based
cirrus from upstream activity.

D21/DTW Convection...There will be a chance (15-20%) for an isolated
thunderstorm between 20Z-24Z

DTW THRESHOLD PROBABILITIES...

* Low for thunderstorms this evening.

* Low for ceilings aob 5000ft this afternoon.

&&

.DTX WATCHES/WARNINGS/ADVISORIES...
MI...None.
Lake Huron...Small Craft Advisory from 10 AM to 10 PM EDT Monday for LHZ421-422-
     441>443.

Lake St Clair...Small Craft Advisory from 10 AM to 10 PM EDT Monday for LCZ460.

Michigan waters of Lake Erie...None.
&&

DISCUSSION...SC
MARINE.......MV
AVIATION.....AM

You can obtain your latest National Weather Service forecasts online
at www.weather.gov/detroit.
Hazardous weather outlook, May 17, 9:47 AM EDT, 9 hours 2 minutes before
Hazardous Weather Outlook
National Weather Service Detroit/Pontiac MI
947 AM EDT Sun May 17 2026

MIZ047>049-053>055-060>062-181400-
Midland-Bay-Huron-Saginaw-Tuscola-Sanilac-Shiawassee-Genesee-Lapeer-
947 AM EDT Sun May 17 2026

This hazardous weather outlook is for southeast Michigan.

.DAY ONE...Today and Tonight

Scattered severe thunderstorms are possible this afternoon and
evening, mainly between 4 PM and 9 PM. The strongest storms will be
capable of producing wind gusts to 65 MPH, hail to one inch in
diameter and isolated tornadoes. Thunderstorm moving will be west to
east at 45 MPH.

.DAYS TWO THROUGH SEVEN...Monday through Saturday

The risk for severe weather exists again Monday and Tuesday mainly
during the afternoon and evening hours, with strong winds, large
hail and heavy rainfall possible.

.SPOTTER INFORMATION STATEMENT...
Dispatchers...Please notify your emergency managers immediately.
Spotter activation may be needed late this afternoon and evening.

MIZ063-068>070-075-076-082-083-181400-
St. Clair-Livingston-Oakland-Macomb-Washtenaw-Wayne-Lenawee-Monroe-
947 AM EDT Sun May 17 2026

This hazardous weather outlook is for southeast Michigan.

.DAY ONE...Today and Tonight

The potential exists for isolated thunderstorms to become severe
this afternoon and evening, capable of producing damaging wind gusts
to 60 mph and large hail. The severe weather risk will mainly be
confined to the north Detroit suburbs into Port Huron.

.DAYS TWO THROUGH SEVEN...Monday through Saturday

The risk for severe weather exists again Monday and Tuesday mainly
during the afternoon and evening hours, with strong winds, large
hail and heavy rainfall possible.

.SPOTTER INFORMATION STATEMENT...
Spotter activation is not anticipated today.

LCZ460-LEZ444-LHZ361>363-421-422-441>443-462>464-181400-
Lake St Clair-
Michigan Waters of Lake Erie from Detroit River to North Cape MI-
Lake Huron from 5NM east of Mackinac Bridge to Presque Isle Lt
beyond 5 NM off shore-
Lake Huron from Presque Isle Light to Sturgeon Point MI beyond 5NM
off shore-
Lake Huron from Sturgeon Point to Alabaster MI beyond 5NM off shore-
Outer Saginaw Bay SW of Alabaster to Port Austin MI to Inner Saginaw
Bay-Inner Saginaw Bay SW of Point Au Gres to Bay Port MI-
Port Austin to Harbor Beach MI-Harbor Beach to Port Sanilac MI-
Port Sanilac to Port Huron MI-
Lake Huron from Port Austin to Harbor Beach beyond 5NM Off Shore-
Lake Huron from Harbor Beach to Port Sanilac beyond 5NM Off Shore-
Lake Huron from Port Sanilac to Port Huron beyond 5NM Off Shore-
947 AM EDT Sun May 17 2026

This hazardous weather outlook is for portions of Lake Erie, Lake
Huron and Lake St Clair.

.DAY ONE...Today and Tonight

Scattered thunderstorms are expected this afternoon and evening. The
strongest storms are expected across Saginaw Bay and locations north
of Port Sanilac in Lake Huron. Wind gusts to 50 knots and hail to one
inch in diameter will be the main severe weather hazards.

.DAYS TWO THROUGH SEVEN...Monday through Saturday

The risk for severe weather exists again Monday and Tuesday mainly
during the afternoon and evening hours, with strong winds, large
hail and heavy rainfall possible.

.SPOTTER INFORMATION STATEMENT...
Dispatchers...Please notify your emergency managers immediately.
Spotter activation may be needed late this afternoon and evening.

You can obtain your latest National Weather Service forecasts online
at www.weather.gov/detroit.

SC

In the hours before

Local storm report, May 17, 5:17 PM EDT, 1 hour 32 minutes before
Preliminary Local Storm Report
National Weather Service Detroit/Pontiac MI
517 PM EDT Sun May 17 2026

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0508 PM     Hail             2 SE Tri Cities Intl Ai 43.51N  84.05W
05/17/2026  M1.00 inch       Saginaw            MI   Trained Spotter

            Quarter sized hail reported by trained spotter. Photo
            also relayed via social media.

&&

Event Number DTX2600453

MV
Special weather statement, May 17, 5:35 PM EDT, 1 hour 14 minutes before
Special Weather Statement
National Weather Service Detroit/Pontiac MI
535 PM EDT Sun May 17 2026

MIZ048-049-054-172200-
Bay MI-Huron MI-Tuscola MI-
535 PM EDT Sun May 17 2026

...A STRONG THUNDERSTORM WILL IMPACT NORTHWESTERN TUSCOLA...
SOUTHEASTERN BAY AND SOUTHWESTERN HURON COUNTIES THROUGH 600 PM
EDT...

At 535 PM EDT, Doppler radar was tracking a strong thunderstorm near
Quanicassee, or 7 miles east of Bay City, moving northeast at 30 mph.

HAZARD...Winds in excess of 40 mph and half inch hail.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around
         unsecured objects. Minor damage to outdoor objects is
         possible.

This strong thunderstorm will be near...
  Quanicassee around 540 PM EDT.

Other locations impacted by this storm include Wisner, Bay Park, and
Bach.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

Torrential rainfall is also occurring with this storm and may lead to
localized flooding. Do not drive your vehicle through flooded
roadways.

&&

LAT...LON 4369 8328 4348 8373 4362 8389 4366 8380
      4362 8368 4374 8352 4379 8348 4382 8349
      4382 8348
TIME...MOT...LOC 2135Z 230DEG 26KT 4360 8374

MAX HAIL SIZE...0.50 IN
MAX WIND GUST...40 MPH

SC
Special weather statement, May 17, 5:36 PM EDT, 1 hour 13 minutes before
Special Weather Statement
National Weather Service Detroit/Pontiac MI
536 PM EDT Sun May 17 2026

MIZ049-055-172200-
Huron MI-Sanilac MI-
536 PM EDT Sun May 17 2026

...A STRONG THUNDERSTORM WILL IMPACT NORTHWESTERN SANILAC AND
SOUTHEASTERN HURON COUNTIES THROUGH 600 PM EDT...

At 536 PM EDT, Doppler radar was tracking a strong thunderstorm near
Cass City, moving northeast at 25 mph.

HAZARD...Winds in excess of 30 mph and pea size hail.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around
         unsecured objects. Minor damage to outdoor objects is
         possible.

This strong thunderstorm will be near...
  Ubly around 545 PM EDT.

Other locations impacted by this storm include Tyre, Ruth, Redman,
Parisville, Helena, Ivanhoe, Rapson, Verona, and New Greenleaf.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

&&

LAT...LON 4376 8261 4356 8306 4361 8312 4367 8312
      4367 8320 4369 8322 4397 8285
TIME...MOT...LOC 2136Z 240DEG 21KT 4367 8308

MAX HAIL SIZE...0.25 IN
MAX WIND GUST...30 MPH

SC
Local storm report, May 17, 5:42 PM EDT, 1 hour 7 minutes before
Preliminary Local Storm Report
National Weather Service Detroit/Pontiac MI
542 PM EDT Sun May 17 2026

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0501 PM     Hail             2 SE Freeland           43.50N  84.09W
05/17/2026  M1.25 inch       Saginaw            MI   Trained Spotter

            Half dollar sized hail reported by trained spotter.
            Photo also relayed via social media.

&&

Event Number DTX2600454

MV
Local storm report, May 17, 5:57 PM EDT, 52 minutes before
Preliminary Local Storm Report
National Weather Service Detroit/Pontiac MI
557 PM EDT Sun May 17 2026

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0522 PM     Hail             1 W Portsmouth Charter  43.56N  83.95W
05/17/2026  M1.00 inch       Bay                MI   Amateur Radio

            Amateur radio relayed photo of roughly a dozen quarter
            sized hail stones in Frankenlust Twp.

0531 PM     Hail             1 W Portsmouth Charter  43.56N  83.95W
05/17/2026  M1.25 inch       Bay                MI   Amateur Radio

            Amateur radio relayed photo of roughly half a dozen
            half dollar sized hail stones in Frankenlust Twp.

&&

Event Number DTX2600455
Event Number DTX2600456

MV
Local storm report, May 17, 6:37 PM EDT, 12 minutes before
Preliminary Local Storm Report
National Weather Service Detroit/Pontiac MI
637 PM EDT Sun May 17 2026

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0616 PM     Hail             2 SE Unionville         43.63N  83.45W
05/17/2026  M1.00 inch       Tuscola            MI   Public

            Report of quarter sized hail near Unionville via both
            MPING and trained spotter report. Spotter also noted
            small branches down in the area.

&&

Event Number DTX2600457

MV

The office that day

Everything else NWS Detroit, MI issued on the same UTC day.

IssuedProductOfficeCountiesLasted
May 17, 3:09 PM EDTSmall Craft AdvisoryDTX31 hr
May 17, 3:54 PM EDTSpecial Weather StatementDTXMidland66 min
May 17, 4:21 PM EDTSpecial Weather StatementDTXSanilac54 min
May 17, 4:26 PM EDTSevere Thunderstorm WarningDTXMidland64 min
May 17, 4:35 PM EDTSpecial Weather StatementDTXHuron, Tuscola85 min
May 17, 4:42 PM EDTSpecial Weather StatementDTXSanilac63 min
May 17, 4:50 PM EDTSpecial Weather StatementDTXSaginaw25 min
May 17, 4:56 PM EDTSevere Thunderstorm WarningDTXBay, Midland, Saginaw53 min
May 17, 5:01 PM EDTSevere Thunderstorm Warning Destructive damage threatDTXBay, Saginaw48 min
May 17, 5:04 PM EDTSpecial Marine WarningDTX59 min
May 17, 5:35 PM EDTSpecial Weather StatementDTXTuscola25 min
May 17, 5:36 PM EDTSpecial Weather StatementDTXHuron24 min
May 17, 5:51 PM EDTSevere Thunderstorm WarningDTXHuron, Tuscola54 min
May 17, 6:07 PM EDTTornado WarningDTXHuron, Tuscola38 min
May 17, 6:17 PM EDTSevere Thunderstorm WarningDTXHuron58 min
May 17, 6:22 PM EDTSpecial Marine WarningDTX98 min
May 17, 6:36 PM EDTSevere Thunderstorm WarningDTXHuron, Sanilac54 min

Nearby

Tornado Warnings in Michigan, 2026Every tornado warning in 2026Tornadoes in 2026

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.