Area Forecast Discussion
Issued by NWS Marquette, MI

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FXUS63 KMQT 171056

Area Forecast Discussion
National Weather Service Marquette MI
656 AM EDT Sat Mar 17 2018

.SHORT TERM...(Today and tonight)
Issued at 454 AM EDT SAT MAR 17 2018

Continued dry weather is expected today and tonight under a mid-
level high pressure ridge. Highs today under mostly sunny skies will
range from the mid to upper 30s east to the lower 50s southwest and
south central. Lows tonight will generally be in the upper teens to
lower 20s. Only thing of note is that there could be an increase in
clouds late tonight along an approaching cold front from Ontario.

.LONG TERM...(Sunday through Friday)
Issued at 414 AM EDT SAT MAR 17 2018

Models suggest that a split flow pattern will prevail from the
through next week. Confluent mid/upper level flow will support
high pressure through nrn Ontario into the northern Great Lakes.
This will maintain dry weather through next week as any signficant
pcpn remains well to the south. High temps will also remain near
or below normal dominated by cool northeasterly low level flow.

Sunday, a backdoor cold front will push into the area with high
pressure building southward from northern Ontario as a shortwave
slides southeast from James Bay. With limited moisture available,
any weak/sheared clipper shortwaves in the confluent nw flow may
bring an increase in mid clouds but should produce little more than
a few flurries.

Sunday night into Tuesday, ne flow with 850 mb temps to around
-12C will provide only marginal instability for any LES, especially
with very dry air upstream. Temps, however will drop below normal
with highs from the upper 20s north to lower 30s south.

Tue night into Wed, light pcpn associated with a mid level
low/trough dropping se from Manitoba will remain mainly to the west
of the cwa through Wed. However, some light snow showers may be
possible over the far west.

Thu-Fri, expect gradual warming as the plains mid level ridge builds
slowly eastward and sfc high pressure builds over the region.
However, temps will onl climb into the mid and upper 30s, near
seasonal averages.

.AVIATION...(For the 12Z TAFS through 12Z Sunday morning)
Issued at 653 AM EDT SAT MAR 17 2018

VFR conditions will continue at all sites through the period.

.MARINE...(For the 4 AM Lake Superior forecast issuance)
Issued at 454 AM EDT SAT MAR 17 2018

No significant winds are expected through the forecast period, with
winds generally staying at or below 20 knots.

Upper Michigan...
Lake Superior...
Lake Michigan...


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