Area Forecast Discussion
Issued by NWS Grand Rapids, MI

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FXUS63 KGRR 221129
AFDGRR

Area Forecast Discussion
National Weather Service Grand Rapids MI
729 AM EDT Tue May 22 2018

LATEST UPDATE...
Aviation

.SYNOPSIS...
Issued at 328 AM EDT Tue May 22 2018

Low pressure will pull away today with any remaining showers
ending during the afternoon. Fair weather will last through much
of the week with the next chance for rain late Friday into
Saturday.

&&

.SHORT TERM...(Today through Thursday)
Issued at 328 AM EDT Tue May 22 2018

Upper trough axis moves through today with isolated showers
possible through this morning, then ending this afternoon as
heights rise and surface ridging builds in. Morning fog lifts
and mixes out over Lake Michigan as lower dew points advect in.
Will have to monitor the coast for fog encroaching inland early
this morning.

Dry weather with moderating temperatures for the rest of the
period as sfc high is anchored over the central Great Lakes.

.LONG TERM...(Thursday night through Monday)
Issued at 328 AM EDT Tue May 22 2018

Persistent south to southwest flow will result in very mild weather
late in the week through the holiday weekend. High temperatures will
reach the upper 70`s to middle 80`s daily.

A low pressure system moving into the northern Great Lakes region
will bring potential for a few showers and thunderstorms Friday
night through Saturday into Sunday. However precipitation will be
scattered and most of the holiday weekend will be dry and warm and
fairly humid.

Rather mild and fairly humid wx will continue on Memorial Day into
early next week. The tropical system over the Gulf Coast region this
weekend could potentially bring subtropical moisture up into our
region for the mid to latter portion of next week.

$$

&&

.AVIATION...(For the 12Z TAFS through 12Z Wednesday morning)
Issued at 728 AM EDT Tue May 22 2018

Widespread IFR with areas of LIFR will persist this morning with a
slow improvement to MVFR and VFR this afternoon. Winds will be
light and variable.

&&

.MARINE...
Issued at 328 AM EDT Tue May 22 2018

Areas of dense fog will continue into this morning. Winds and
waves will remain relatively light.


&&

.HYDROLOGY...
Issued at 329 PM EDT Mon May 21 2018

Total rainfall amounts with the rain through tonight will be less
than an inch for most locations. River forecasts this morning taking
these amounts into consideration produce small rises at the more
flashy locations. Most rivers seem to simply exhibit a slower fall
after the previous rains over the weekend.

Once the rain moves out tonight/early Tuesday, we should remain dry
until at least Friday, if not later. This will allow rivers to
recover a bit more before rainfall returns over the holiday
weekend.

&&

.GRR WATCHES/WARNINGS/ADVISORIES...
MI...None.
LM...Dense Fog Advisory until 10 AM EDT this morning for LMZ844>848.

&&

$$

SYNOPSIS...Ostuno
SHORT TERM...Ostuno
LONG TERM...Laurens
AVIATION...Ostuno
HYDROLOGY...NJJ
MARINE...Ostuno



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