Overview
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A line of strong to severe thunderstorms moved across Lower Michigan during the afternoon hours on Monday, May 18th. These storms brought strong and damaging winds, which resulted in numerous areas sustaining straight-line wind damage. Damage included numerous trees and large tree limbs downed, as well as powerlines. |
Radar
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| Loop of NEXRAD Base Reflectivity Radar from 1:05pm to 6:00pm on May 18, 2026 - courtesy Iowa Environmental Mesonet (IEM) |
Storm Reports
Preliminary Local Storm Report...Summary
National Weather Service Detroit/Pontiac MI
1041 AM EDT Tue May 19 2026
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0324 PM Tstm Wnd Dmg 1 NW Rochester Hills 42.66N 83.17W
05/18/2026 Oakland MI Trained Spotter
Report of large tree limb down on house causing damage
to roofing
0328 PM Tstm Wnd Dmg Adrian 41.90N 84.04W
05/18/2026 Lenawee MI 911 Call Center
Sporadic trees reported down across the entire county,
but particularly in and around Adrian.
0400 PM Tstm Wnd Gst Tri Cities Intl Airport 43.53N 84.08W
05/18/2026 M56 mph Saginaw MI ASOS
Measured at KMBS - MBS International Airport
0400 PM Tstm Wnd Dmg 2 E Hemlock 43.42N 84.19W
05/18/2026 Saginaw MI Trained Spotter
24 inch diameter healthy tree down
0403 PM Tstm Wnd Dmg 3 SE Antrim Center 42.79N 84.06W
05/18/2026 Shiawassee MI Public
Photo of a healthy tree down across road. Estimated 1
ft diameter.
0405 PM Tstm Wnd Dmg 3 SW Barton Hills 42.28N 83.80W
05/18/2026 Washtenaw MI Emergency Mngr
report of multiple power lines down
0412 PM Tstm Wnd Gst Tri Cities Intl Airport 43.53N 84.08W
05/18/2026 M63 mph Saginaw MI ASOS
Measured at KMBS - MBS International Airport
0414 PM Tstm Wnd Gst Livingston County Airpo 42.63N 83.98W
05/18/2026 M45 mph Livingston MI AWOS
Measured at KONZ - Livingston County Airport
0416 PM Tstm Wnd Gst Saginaw Harry Browne Ai 43.43N 83.86W
05/18/2026 M60 mph Saginaw MI AWOS
Measured at KHYX - Harry Browne Airport
0417 PM Tstm Wnd Gst Dundee 41.96N 83.66W
05/18/2026 M81 mph Monroe MI Trained Spotter
Measured on a handheld anemometer
0418 PM Tstm Wnd Dmg Saginaw Harry Browne Ai 43.43N 83.86W
05/18/2026 Saginaw MI Trained Spotter
Report of multiple trees down near Harry Brown Airport
0418 PM Tstm Wnd Dmg Mount Morris 43.12N 83.70W
05/18/2026 Genesee MI Trained Spotter
Large tree limbs down on powerlines.
0421 PM Tstm Wnd Dmg 2 NW Flint 43.05N 83.71W
05/18/2026 Genesee MI Public
Mulitple large limbs and powerlines down.
0424 PM Tstm Wnd Dmg Chilson 42.53N 83.86W
05/18/2026 Livingston MI Public
Report of a tree down
0424 PM Tstm Wnd Dmg 3 SE White Lake 42.63N 83.46W
05/18/2026 Oakland MI Amateur Radio
Report of a large tree on home
0426 PM Tstm Wnd Dmg 1 NE Essexville 43.62N 83.83W
05/18/2026 Bay MI Amateur Radio
Report of 10 to 12 inch tree limbs down
0430 PM Marine Tstm Wind Lexington Harbor 43.27N 82.52W
05/18/2026 M51 mph Sanilac MI Mesonet
0435 PM Tstm Wnd Dmg Carleton 42.06N 83.39W
05/18/2026 Monroe MI 911 Call Center
Reports of trees and wires down in the county,
especially across northern sections of the county.
0435 PM Tstm Wnd Dmg 1 SE Fenton 42.79N 83.71W
05/18/2026 Genesee MI NWS Employee
Large tree limb down.
0445 PM Tstm Wnd Gst Oakland County Intl Air 42.66N 83.41W
05/18/2026 M58 mph Oakland MI ASOS
Measured at KPTK Pontiac Airport
0450 PM Tstm Wnd Dmg 2 E Otter Lake 43.22N 83.43W
05/18/2026 Lapeer MI Trained Spotter
Report of 3ft diameter pine tree down
0450 PM Marine Tstm Wind Saginaw Bay South 43.81N 83.72W
05/18/2026 M55 mph Bay MI Buoy
0452 PM Tstm Wnd Dmg 2 S Sebewaing 43.70N 83.46W
05/18/2026 Huron MI Public
Photo of healthy tree snapped near base
0454 PM Tstm Wnd Dmg S Wyandotte 42.21N 83.15W
05/18/2026 Wayne MI Public
Social media photos of large tree limb down and small
tree snapped
0455 PM Marine Tstm Wind 1 W Sand Point 43.91N 83.38W
05/18/2026 M55 mph Huron MI Mesonet
0457 PM Tstm Wnd Gst Ann Arbor Municipal Air 42.22N 83.74W
05/18/2026 M49 mph Washtenaw MI ASOS
Measured at KARB
0500 PM Marine Tstm Wind Caseville Light 43.95N 83.29W
05/18/2026 M59 mph Huron MI Mesonet
0500 PM Tstm Wnd Dmg 2 E Deford 43.51N 83.15W
05/18/2026 Tuscola MI Public
Social media photo of a healthy tree snapped
0512 PM Tstm Wnd Dmg 3 W Juhl 43.36N 83.01W
05/18/2026 Sanilac MI Public
Large tree limb and powerlines down.
0518 PM Tstm Wnd Gst Detroit City Airport 42.41N 83.01W
05/18/2026 M43 mph Wayne MI ASOS
Measured at KDET - Detroit City Airport
0519 PM Tstm Wnd Dmg 1 SW Utica 42.62N 83.03W
05/18/2026 Macomb MI Amateur Radio
Report of a large tree down on house and car
0519 PM Tstm Wnd Dmg 3 W Utica 42.64N 83.07W
05/18/2026 Macomb MI Amateur Radio
Report of tree down on power line
0522 PM Marine Tstm Wind Peche Island Light 42.36N 82.91W
05/18/2026 M53 mph Wayne MI Buoy
0523 PM Tstm Wnd Dmg 2 SE Shelby Township 42.66N 82.99W
05/18/2026 Macomb MI Trained Spotter
Report of trees down near 22 mi and Schoenherr Rd and
23 mi and Schoenherr Rd
0527 PM Tstm Wnd Dmg 1 N Waldenburg 42.67N 82.94W
05/18/2026 Macomb MI Public
Social media photo of healthy tree snapped
0527 PM Marine Tstm Wind Detroit River Light 42.00N 83.14W
05/18/2026 M51 mph Monroe MI Buoy
0530 PM Marine Tstm Wind 1 E Harbor Beach 43.85N 82.64W
05/18/2026 M51 mph Huron MI Mesonet
0533 PM Marine Tstm Wind Selfridge ANGB 42.62N 82.83W
05/18/2026 M49 mph Macomb MI ASOS
0544 PM Marine Tstm Wind Grosse Pointe YC 42.43N 82.87W
05/18/2026 M51 mph Wayne MI Mesonet
0545 PM Marine Tstm Wind Lexington Harbor 43.27N 82.52W
05/18/2026 M48 mph Sanilac MI Mesonet
0600 PM Marine Tstm Wind 5 NE Lexington North 43.37N 82.45W
05/18/2026 M63 mph LHZ443 MI Ship
0600 PM Marine Tstm Wind 1 W Riverside 42.56N 82.65W
05/18/2026 M49 mph St. Clair MI Mesonet
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| NWS Detroit/Pontiac, MI Local Storm Reports (LSR) from May 18, 2026 |
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| SPC National Storm Reports from May 18, 2026 |
Photos & Video
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| Mt. Morris, MI (Courtesy of MI Storm Chasers) |
Troy, MI (Courtesy of CBS News Detroit) |
Essexville, MI (Courtesy of Ham Radio Operator) |
Blissfield, MI (Courtesy of MI Storm Chasers) |
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| Allen Park, MI (Courtesy of MI Storm Chasers) |
Blissfield, MI (Courtesy of MI Storm Chasers) |
Environment
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| Figure 1: WPC Surface Analysis, valid 18 UTC May 18, 2026 | Figure 2: WPC Surface Analysis, valid 21 UTC May 18, 2026 | Figure 3: Surface-Based CAPE, valid 18 UTC May 18, 2026 |
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| Figure 4: Surface-Based CAPE, valid 20 UTC May 18, 2026 | Figure 5: Caption | Figure 6: Caption |
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| Figure 7: SPC Mesoscale Discussion #774, valid 2045 UTC May 18, 2026 | Figure 8: Severe Thunderstorm Watch #221, valid 1700 UTC May 18, 2026 |
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Media use of NWS Web News Stories is encouraged! Please acknowledge the NWS as the source of any news information accessed from this site. |
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