textproduct: Gaylord

KEY MESSAGES

- Lingering showers/sprinkles today, esp EUP

- Rain returns Monday into at least midweek; potentially heavy at times.

DISCUSSION

Issued at 338 AM EST Sun Nov 1 2026

PATTERN SYNOPSIS/FORECAST:

Amplified but messy pattern across the CONUS attm. Broad ridging over the bulk of the CONUS muddied by a bit of energy tracking ENE into the Mid MS Valley with a plume of Gulf moisture along/ahead of it across the Upper Midwest, with deeper moisture trying to creep into the Upper Great Lakes amid a weak warm advection regime (GRB's 0z/01 sounding with an anomalous pwat of 1.13in vs our somewhat above normal 0.61in...and +8C air at 850mb creeping in from the west). Best warm advection, though, remains to our north across central/eastern Canada with more progressive northern stream (zonal 850mb jet around 40kts)...and to our south in the Mid MS Valley, attendant to aforementioned muddying and negatively tilted energy, which is driving some deeper convection in TN/MS as of 4z...though there is a southerly LLJ over the central Plains. Upstream, potent upper level jet traversing the flow from E Asia across the Pacific...and cutoff energy along the West Coast starting to sharpen up as a 120+kt upper jet exits the base of the trough over SoCal...with abundant Pacific moisture transport into the SW US with broad low pressure west of the MS River; surface boundary stretches from northern CA eastward to the Dakotas. 1034mb surface high over the Mid-Atlantic/New England, with surface ridging still hanging onto our weather...for now. A few showers have made it to the ground, though...with a bit of wet pavement at 4z and again at 7z.

Energy over the Mid MS Valley to continue to trek through the flow...crossing our area today as longwave ridge axis otherwise builds overhead. Troughing out west will be on the move given Pacific energy shoving it along...resulting in amplified troughing plowing into the central US early this week. This will drive surface pressure falls across the MS Valley...and these appear to stick around for a while as the upper troughing tries to get cutoff from the flow over the Midwest/MS Valley. Strong jet in East Asia/Pacific to keep sending energy eastward into North America through the period...which suggests a progressive but messy pattern ahead for the CONUS. Quite a bit of uncertainty in how this will evolve...but there are some signals troughing could broadly try to hang on over the area going into the second week of November, though perhaps not overly cold troughing.

FORECAST DETAILS...

Rain chances linger today, especially north...Mid-level moisture streams northward overhead today, and suspect this will keep skies a bit on the cloudy side overall. Best low-level moisture plume will continue to reside over the UP where there is better theta-e advection in the low-levels, and will be slightly closer to northern stream energy tracking nearby over Ontario this morning into early afternoon. Otherwise, not much in the way of forcing with high pressure still holding on. What's left of the PV max as it becomes embedded in the flow will track across the area later Sunday, and would not be entirely surprised if this helped squeeze out a few sprinkles/showers over the area during the late afternoon/evening...but think most areas will stay quiet.

Rain chances return Monday and beyond, potentially heavy at times? Warm advection looks to ramp back up Monday afternoon, particularly to our west as that trough axis enters the Central Plains and drives strong surface pressure falls out there as well...resulting in strengthening southerly flow up through the MS Valley. Expect increasing moisture through the column, particularly Monday night into Tuesday as the LLJ takes its aim on the Upper Great Lakes. Pwats likely jump up around or above 1.5in, which is +4-5 standard deviations above the mean (i.e., highly anomalous). Combined with the sharp trough and jet max to aid in synoptic forcing as a warm front lifts into the area...definitely have concerns for heavy rainfall during this timeframe. Not impossible the heaviest rain may remain focused just to our west over the central UP, a little closer to the PV maxima and better forcing...but certainly something that will need to be monitored going forward, particularly noting that the upper trough may be slow to move out, and could keep the threat of active weather (i.e., heavy rain) in the region through at least midweek. Noting signals for a deformation axis to hang out in the area into the latter half of the week, especially if the trough closes off into an upper low in our vicinity...think some portion of the Upper Great Lakes/Midwest could end up with quite a bit of rain by the time the week is all said and done. Attm...appears the best shot for multiple rounds of rain to add up will be across the Yoop, where the rain is rather desperately needed. Here, probabilistic guidance suggests rainfall totals Monday night through Tuesday could exceed an inch...though probabilities are much higher across the Upper MS Valley.

AVIATION /12Z TAFS THROUGH 12Z MONDAY/

Issued at 604 AM EST Sun Nov 1 2026

A few SHRA to linger, esp for CIU and perhaps PLN this morning; could see some VCSH again toward 21-3z. Much less likely elsewhere. Generally S winds sustained 5-10kts could gust 15-25kts (esp PLN late afternoon). Lake breezes possible in afternoon; offshore land breezes possible tonight. CIU could flirt with or drop to MVFR today, less confidence in sub-VFR elsewhere but could occur at PLN. Have some concerns about fog and/or low stratus tonight, but this may depend how well we scatter out a 6-10kft cloud deck today/tonight.

APX WATCHES/WARNINGS/ADVISORIES

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