Area Forecast Discussion
Issued by NWS Grand Rapids, MI

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FXUS63 KGRR 151536
AFDGRR

Area Forecast Discussion
National Weather Service Grand Rapids MI
1136 AM EDT Fri Sep 15 2017

LATEST UPDATE...
Hydro

.SYNOPSIS...
Issued at 234 AM EDT Fri Sep 15 2017

High pressure will bring fair weather with warm days and cool
nights into the weekend. The next chance of rain is Sunday
afternoon when a cold front could bring some showers and
thunderstorms which linger into Monday.

&&

.SHORT TERM...(Today through Sunday)
Issued at 320 AM EDT Fri Sep 15 2017

Sfc and upper ridging will prevail into the weekend. Some moisture
return is expected into the weekend with dew points and
precipitable water values increasing. A shortwave trough is
forecast to shear out as it passes north of the Great Lakes on
Sunday, and the cold front may not have much coverage of storms
with it as it pushes in during the afternoon. Low chance to
slight chance POPs should cover it for now.

.LONG TERM...(Sunday night through Thursday)
Issued at 320 AM EDT Fri Sep 15 2017

It will remain unseasonably warm through the long range forecast
period with temperatures averaging around ten to fifteen degrees
above normal for this time of year next week. A weak cold front
front will bring a chance for showers Sunday night into Monday.
However showers will be widely scattered and most of this time frame
looks dry.

Fair wx is anticipated Monday night through midweek as a sfc high
pressure ridge builds into the eastern Great Lakes region. Southerly
flow on the back side of this ridge will help to boost max temps
into the upper 70`s to lower 80`s Tuesday through Thursday. The next
chance for rain will likely not come until late Thursday or Friday.

&&

.AVIATION...(For the 12Z TAFS through 12Z Saturday morning)
Issued at 728 AM EDT Fri Sep 15 2017

VFR conditions will prevail today after some patchy fog this
morning. There could be a few areas of fog tonight but most places
will see VFR through Saturday. Winds will be from the south less
than 10 knots.


&&

.MARINE...
Issued at 320 AM EDT Fri Sep 15 2017

Winds and waves will remain relatively light into the weekend.
There will be a slight chance of thunderstorms by Sunday
afternoon.


&&

.HYDROLOGY...
Issued at 1136 AM EDT Fri Sep 15 2017

Precipitation forecasts are mostly dry for the long term period,
which will continue to result in near/below normal river levels.
No hydro concerns exist in the foreseeable future.

&&

.GRR WATCHES/WARNINGS/ADVISORIES...
MI...None.
LM...None.
&&

$$

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



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