494
FXUS63 KAPX 111743
AFDAPX

Area Forecast Discussion
National Weather Service Gaylord MI
143 PM EDT Tue Aug 11 2026

.KEY MESSAGES...

- Sporadic/small shower/storm chances thru Thursday.

- Somewhat cooler temps late this week and weekend.

- After a break Friday, precip chances return this weekend.

&&

.DISCUSSION...
Issued at 305 AM EDT Tue Aug 11 2026

A low-amplitude ridge-west/trof-east pattern persists. This pattern
does get interrupted this weekend, as an upper-level shortwave
ridge tries to push into the Great Lakes. But this ridge
gradually deamplifies and melts away, returning us to our
previously scheduled wnw-flow programming. Areas of more active
wx will continue to be found to our north, and to our south,
for the next few days.

No precip or synoptic-scale cloud cover early this AM. However,
patchy fog and low clouds are developing as expected, especially
in the south (where the BL is more moist). That will gradually
burn off as we move thru mid- morning. Our highest-progged
instability by afternoon extends from MBL/CAD- ne-ward into the
Straits. MlCape values reach up to 500j/kg here, aided by
moisture from Lake MI. With very light synoptic winds today, the
strongest forcing today will be in the eastern UP, where lake
breezes will collide in the interior in the afternoon. Our
ability to turn instability into convection elsewhere is less
certain, with weaker forcing along lake breeze boundaries. And a
lot of the energy in the broader region will focus along one or
more MCSs tracking across the southern lakes this afternoon/
tonight. Tonight, some guidance tries to bring convective
remnants east from the MI/WI border toward the Straits. Chancy
pops in order for much of tonight for eastern upper and far
northern lower MI.

Unfortunately, model spread regarding shortwave impulses tracking
across the area mid-week has increased. Convective feedback
into the broader synoptic pattern is becoming more substantial
in model progs (which is likely correct). For Wednesday during
the day, it looks like we`re out ahead of any even weak
forcing. So lake-breeze focused convection should be the main
show, such as it is. That means a chance for afternoon storms
in eastern upper and ne lower MI. Can something take a run at us
from the wnw Wed night? Guidance pops are very unimpressed. A
small chance for convection returns south of M-32 Thursday.

Surface high pressure builds se-ward into the northern lakes region
to close out the work week. This will bring cooler/drier wx for a
short while, Thu night to Fri night. But return flow behind the
departing high, and ahead of a surface cold front and some shortwave
forcing aloft, will transition us wetter for the weekend.
Potentially a decent shot for what would be needed rain for many,
but lots can change between now and then. Somewhat cool/dry
northerly low- level flow behind that front for early next week.
Temps are a little cooler Friday to Monday, with highs in the
70s, as opposed to near 80f/low 80s the other days of the next
week.

&&

.AVIATION /18Z TAFS THROUGH 18Z WEDNESDAY/...
Issued at 142 PM EDT Tue Aug 11 2026

VFR conditions continue this afternoon with mostly sunny skies
across Northern Michigan. Lake breeze processes will cause surface
winds to continuously change direction until becoming light and VRB
overnight. MVFR cloud cover builds overnight mainly between
0600Z and 1300Z at all TAF sites, while BR and FG development at
KMBL will drop VSBY`s down to IFR through early Wednesday
morning. CIG`s quickly dissipate Saturday morning, returning to
VFR at all sites through the end of the forecast period.

&&

.APX WATCHES/WARNINGS/ADVISORIES...
MI...None.
MARINE...None.

&&

$$

DISCUSSION...JZ
AVIATION...SJC