Overview
An extended period of wintry conditions was observed across Southeast Michigan from early in the morning of Saturday, February 15 into the evening hours Sunday, February 16. This occurred as a complex and broad low pressure system developed over the Tennessee and Ohio Valleys Saturday night before tracking up the eastern seaboard on Sunday. This system brought severe weather to the Southeast U.S. and 2 to 6+ inches of rain across much of the Tennessee/Ohio Valleys resulting in deadly, widespread flooding. A summary of the impacts in Kentucky can be found here. Locally, we saw several episodes of snowfall from this system with intervals of ice pellets and freezing drizzle/mist. 36-hour snowfall totals ranging from 1 to 4 inches across the south and Metro Detroit, to 4 to 6 inches across the Thumb, Flint vicinity, and northern Metro Detroit suburbs.
An initial band of light snow developed during the evening of Friday, February 14, but had to contend with a layer of dry air below 10,000 ft. This band eventually began to reach the ground around midnight and dropped a few tenths of an inch before sunrise Saturday. Moisture advection and frontogenesis aloft caused additional bands of snow, heavy at times, to develop overhead during the mid-morning hours and persist into the afternoon. Much of this was focused along and north of M-59. Dry air then began to work back in from the south, causing ice nuclei to be stripped from the cloud layer and resulting in freezing drizzle for much of the area through the afternoon before changing back to light snow by the evening. This light snow tapered off by midnight Sunday as the next phase of the event took shape upstream.
The center of low pressure tracked up the spine of the Appalachians on Sunday, placing Southeast Michigan within the far western extent of the system's strong deformation located in its northwest quadrant. This forcing caused a band of snow to redevelop early Sunday morning and persist through the mid-morning hours before moving out as the system began to reach New England. Additional snow showers then developed Sunday afternoon as the system pulled a cold front through. Behind this front, winds became gusty and reached 30 to 40 mph across much of the area. This combined with the snow showers and fresh snow was able to produce areas of blowing snow Sunday night into Monday. Additional lake effect snow showers streamed across the state Sunday evening into Monday, bringing localized accumulations of 1 to 2 inches.
Snow Totals
Public Information Statement...Summary
National Weather Service Detroit/Pontiac MI
1148 AM EST Sun Feb 16 2025
STORM TOTAL SNOW REPORTS
Location Snowfall Duration
(Inches) (Hours) Lat Lon
...Genesee County...
Flint Bishop Intl Airpo M 3.7 36 42.97N 83.75W
Goodrich M 4.5 36 42.92N 83.51W
...Huron County...
Filion M 3.4 36 43.90N 83.00W
Bad Axe M 4.1 36 43.80N 83.00W
...Lenawee County...
Morenci M 2.3 36 41.72N 84.22W
...Livingston County...
1 NE Howell M 3.5 36 42.62N 83.92W
...Macomb County...
Eastpointe M 3.5 36 42.47N 82.96W
Macomb Township M 4.0 36 42.67N 82.92W
Richmond M 6.1 36 42.81N 82.75W
Washington M 6.1 36 42.72N 83.04W
...Midland County...
Oil City M 2.2 36 43.61N 84.59W
...Oakland County...
Berkley M 3.5 36 42.50N 83.18W
2 SW Wolverine Lake M 4.5 36 42.54N 83.50W
4 E White Lake M 4.5 36 42.65N 83.43W
Lake Orion M 6.4 36 42.78N 83.24W
...Saginaw County...
Tri Cities Intl Airport M 3.1 36 43.53N 84.08W
...Sanilac County...
Lexington M 4.0 24 43.27N 82.53W
2 W Peck M 6.0 36 43.26N 82.86W
...St. Clair County...
3 SW Port Huron M 4.0 36 42.97N 82.47W
...Tuscola County...
Cass City M 3.5 36 43.60N 83.18W
...Washtenaw County...
Ann Arbor M 2.3 36 42.28N 83.73W
4 SW Saline M 3.2 36 42.13N 83.84W
4 NE Chelsea M 3.9 36 42.35N 83.97W
...Wayne County...
Grosse Pointe Farms M 3.0 36 42.41N 82.89W
5 NE Detroit M 3.2 36 42.38N 82.98W
Livonia M 3.2 36 42.40N 83.37W
2 SE Romulus M 4.6 36 42.20N 83.34W
Wyandotte M 4.8 36 42.21N 83.15W
M = Measured
E = Estimated
$$
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Estimated snowfall totals across Southeast Michigan from the February 15 to 16, 2025 storm. |
Wind Gusts
Public Information Statement National Weather Service Detroit/Pontiac MI 532 PM EST Mon Feb 17 2025 ...HIGHEST WIND REPORTS OVER THE PAST TWO DAYS... Location Speed Time/Date Lat/Lon Detroit Metro Airport 44 MPH 0105 PM 02/17 42.23N/83.33W Detroit Willow Run Airport 41 MPH 0854 PM 02/16 42.23N/83.53W Pontiac 41 MPH 1214 PM 02/17 42.67N/83.42W Detroit Grosse Ile 39 MPH 0817 PM 02/16 42.10N/83.15W Adrian 38 MPH 0853 PM 02/16 41.87N/84.08W Flint Bishop Airport 38 MPH 0253 PM 02/17 42.97N/83.75W Detroit City Airport 37 MPH 0709 PM 02/16 42.40N/83.02W Selfridge Airforce Base 37 MPH 0149 PM 02/17 42.62N/82.82W Saginaw County H W Browne 36 MPH 1106 AM 02/17 43.43N/83.87W Ann Arbor 35 MPH 1218 PM 02/17 42.22N/83.74W Howell 35 MPH 0815 PM 02/16 42.62N/83.97W Saginaw 35 MPH 1219 PM 02/17 43.53N/84.08W Owosso 33 MPH 1235 PM 02/17 43.00N/84.13W Monroe 32 MPH 0320 PM 02/17 41.93N/83.42W Troy Oakland 32 MPH 1214 PM 02/17 42.55N/83.18W Lapeer 31 MPH 0235 PM 02/17 43.07N/83.27W Bad Axe 30 MPH 0115 PM 02/17 43.78N/82.98W Midland Barstow 30 MPH 0348 PM 02/17 43.67N/84.27W Caro Tuscola 29 MPH 1155 AM 02/17 43.47N/83.45W These observations were collected from the ASOS/AWOS`s across southeast Michigan. Not all data listed are considered official. $$
Radar
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Radar: NEXRAD mosaic base reflectivity radar loop from February 15 to 17, 2025 |
Radar loop courtesy of Iowa Environmental Mesonet (IEM)
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