textproduct: Gaylord

KEY MESSAGES

- Cool tonight with colder pockets possibly into the upper 30s.

- Showers and storms likely Friday-Saturday.

- Below normal temperatures late weekend into early next week.

DISCUSSION

Issued at 212 PM EDT Wed Aug 19 2026

Benign and overall quiet weather conditions through Thursday as a relatively cool/dry airmass slides across the Great Lakes. Patchy ground fog possible early Thursday morning, especially around areas that received better rains the past few days. Trajectory analysis shows our airmass tonight originating near the Arrowhead of Minnesota - which had some lows in the 30s last night. Certainly widespread 40s tonight across much of northern Michigan (milder lakeshore areas) with some of the typical colder pockets in the interior river valleys possibly dipping into the 30s. A bigger pattern change begins by later Thursday night into the weekend as a seasonably strong upper level shortwave dives south out of Hudson Bay, gradually carving out a deeper trough across the Great Lakes. Warm air advection prior to the development of the upper trough will spread clouds and increasing shower chances from west-east starting late Thursday night. Better shower/storm chances Friday into Saturday with lowering upper heights and cooler temperatures aloft.

The end of the weekend into early next week will have a touch of fall feel with some lake effect (sorry to use that word this early in the year) showers possible on Sunday across parts of the area with sufficient overlake instability. Highs in the mid 60s to mid 70s.

AVIATION /00Z TAFS THROUGH 00Z FRIDAY/

Issued at 654 PM EDT Wed Aug 19 2026

Clear skies and light winds tonight, potentially producing some fog/mist...especially at KMBL and KCIU. Any fog/mist will burn off quickly after sunrise on Thursday, leaving behind some scattered and fairly elevated cumulus. Light winds continue, with afternoon lake breezes expected.

APX WATCHES/WARNINGS/ADVISORIES

MI...None. MARINE...None.