Flint, Michigan 7 Day Weather Forecast

Wx Forecast - Wx Discussion - Wx Aviation

133
FXUS63 KDTX 060358
AFDDTX

Area Forecast Discussion
National Weather Service Detroit/Pontiac MI
1158 PM EDT Sun Apr 5 2026

.KEY MESSAGES...

- Stretch of colder conditions will exist tonight through Tuesday
with temperatures remaining below normal during this time.

- Potential for a mix of light rain and snow exists late tonight and
again Monday afternoon into Monday night. A dusting of accumulation
on grassy surfaces will be possible.

- The next good chance for rain will be Thursday into Friday.

&&

.AVIATION...

A pair of cold fronts will drop through the region overnight and
Monday afternoon providing two windows of light rain/snow and MVFR
conditions. The obs upstream with the front currently over southern
WI are not dropping much with many reporting VFR still. This will
affect the local region mainly before 12Z. A second stronger wave
will pass over the area Monday afternoon which will again present a
window to produce a rain/snow mix. There is better frontal forcing
which should result in a better organized band of precip sliding
through for a couple hours. More scattered activity will be possible
before and after the frontal band. MVFR CIGs and possibly VSBYs will
be possible with this activity.

.DTW THRESHOLD PROBABILITIES...

*  Moderate for ceiling at or below 5000 ft initially but high again
   after 08Z through Monday.

*  Moderate for ptype to be rain/snow mix Monday morning and Monday
   afternoon.

&&

.PREV DISCUSSION...
Issued at 321 PM EDT Sun Apr 5 2026

DISCUSSION...

A brief interval of below to well below normal temperatures can be
expected the next couple days as the Great Lakes region resides
along the southern edge of the broad upper level trough under deep
layer northwest flow. Brief mid level subsidence/negative
differential vorticity advection will sustain dry conditions through
the first half of the night and will allow some partial clearing
this evening. A mid level short wave impulse now over nrn MN will
quickly move across Se Mi overnight. The resulting large scale scale
ascent and deep layer moisture will support a chance of showers.
Steep mid level lapses rates will result in a convective component
to the showers. A subtle low level warm layer will advect into the
southern portions of the area overnight, supporting a rain or
rain/snow mix in the south. The thermal profile will be cold enough
to support wet/melting snow in the north.

The passage of this wave will usher in a reinforcing shot of cold
air Monday into Tuesday. Steepening low level lapse rates as a
result of cold air advection and daytime heating Monday will result
in expanding diurnal cu and showers Mon afternoon. While temps are
expected to rebound into the 40s across most of the area, low wet
bulb zero heights will support some snow in the heavier convective
showers, especially across the northern half of the forecast area.
Given forecast weak surface based instability, some of these showers
may produce brief intense snowfall rates. There is some indication
in a few hi res solutions of an expanding region of low level
convergence developing along a surface cold front/trough axis
sliding south Monday evening/night, warranting a lingering chance of
snow showers. The push of cold air behind this is quite impressive
for early April as 850mb temps drop into the negative teens. This
will drive Mon night lows into the 20s and will warrant Tuesday
highs only in the 30s to near 40. Strong high pressure expanding
across the region will at least support dry conditions on TUesday.

A warming trend will then ensue Wednesday into Thursday within the
return flow of the departing sfc high and in advance of a closed mid
level wave forecast to move along the cntl US/Canadian border
region. As this wave lifts north of the region, it is forecast to
drag an associated cold front into Lower Mi, paralleling the mid
level flow. The broad array of ensemble guidance generally suggests
high chances for rain late in the week due to the projected slow
movement of this front.

MARINE...

The pressure gradient and cold advection weaken tonight, allowing
WNW wind to subside and current headlines to expire. A clipper
system passes through on Monday bringing snow showers and an uptick
in north to northwest winds Monday night in its wake. Gusts Monday
night are forecast to peak between 25 and 30 kt before weakening
Tuesday morning. High pressure builds in briefly on Tuesday, then
flow strengthens out of the south on Wednesday as the next low
pressure system tracks into the upper Midwest. This system will send
a slow-moving cold front across the Great Lakes Thursday and Friday.

&&

.DTX WATCHES/WARNINGS/ADVISORIES...
MI...None.
Lake Huron...Small Craft Advisory from 4 PM Monday to 10 AM EDT Tuesday for
     LHZ421.

     Small Craft Advisory from 4 PM Monday to 4 AM EDT Tuesday for
     LHZ422.

     Small Craft Advisory from 8 PM Monday to 4 PM EDT Tuesday for
     LHZ441>443.

Lake St Clair...None.
Michigan waters of Lake Erie...None.
&&

$$

AVIATION.....DRK
DISCUSSION...SC
MARINE.......TF


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at www.weather.gov/detroit.