textproduct: Gaylord

KEY MESSAGES

-High pressure continues seasonably normal fall-like temperatures build this week no precipitation expected.

DISCUSSION

Issued at 333 AM EDT Tue Sep 22 2026

Pattern Synopsis and Forecast:

A midlevel split flow-pattern begins to build across North America this morning with ridging over the Northern Plains while low amplitude troughing spans the southern U.S. Midlevel ridging will support subsidence aloft this morning and cause surface high pressure to build across the Great Lakes region through the next several days. H8 temperatures in the single digits will keep temperatures seasonably normal through the entirety of the forecast period with highs in the 60s and overnight lows in the upper 30s to low 40s.

Cloud cover will continue to dissipate and progress south this morning as the stationary boundary currently occupying the Appalachians moves downstream. High pressure building over central Ontario will keep conditions quiet and dry over the CWA throughout the entirety of the forecast period. Efficient overnight radiational cooling will drop lows into the mid/upper 30s across interior eastern upper and northern lower leading to another round of patchy frost development tonight. Otherwise, conditions remain climatologically normal for late September with highs in the 60s for most areas while efficient overnight radiational cooling processes drop lows into the upper 30s to low 40s. Other than ideal fall conditions for hardwood color development, no out-of-the-ordinary or active weather is expected at this time. Long-range ensembles continue to hint at low-end chances of showers midweek next week as a shortwave lifts across the Northern Plains, but confidence in any appreciable (if any) rainfall reaching the Great Lakes Region remains low.

AVIATION /06Z TAFS THROUGH 06Z WEDNESDAY/

Issued at 1052 PM EDT Mon Sep 21 2026

VFR conditions are expected to continue through the issuance period across northern Michigan. BKN/SCT low clouds close to MVFR thresholds may linger across southern portions of the area through the morning with clearing skies into the afternoon. Mainly light winds overnight will increase to around 10 kts out of the ENE Tuesday morning, gusting to 15-20 kts at times through the afternoon.

APX WATCHES/WARNINGS/ADVISORIES

MI...Beach Hazards Statement through this evening for MIZ018-024- 030-036-042. Frost Advisory until 9 AM EDT this morning for MIZ086-087-095- 096. MARINE...Small Craft Advisory until 8 PM EDT this evening for LHZ348- 349.