Area Forecast Discussion
Issued by NWS Grand Rapids, MI

Home | Current Version | Previous Version | Graphics & Text | Print | Product List | Glossary On
Versions: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50
FXUS63 KGRR 210730

Area Forecast Discussion
National Weather Service Grand Rapids MI
330 AM EDT Fri Oct 21 2016

Synopsis/Short Term/Long Term/Marine

Issued at 330 AM EDT Fri Oct 21 2016

Temperatures closer to normal for this time of year can be expected
today and Saturday, then a slight warmup will occur on Sunday. That
warm up will be very short lived however and most of next week will
have near normal highs in the low to mid 50s.


.SHORT TERM...(Today through Sunday)
Issued at 330 AM EDT Fri Oct 21 2016

Banded precip has been slow to end around Jackson so will carry a
few more hours of scattered rain showers in the far southeast CWFA
this morning. Otherwise considerable cumulus/stratocu clouds should
linger today with upr trough/cold pool aloft. Dry northerly flow may
counter this a bit so will side with a partly sunny sky fcst today
for most zones.

Almost due north flow will result in most of the lake effect showers
remaining offshore this morning with the exception of the wrn
portion of Mason and Oceana counties where likely pops may even be
in order. The flow does back slightly this afternoon and some of
those showers may begin impacting more of the lakeshore,
particularly south of Holland.

Some lake effect will probably linger tonight as well near the coast,
although if enough clearing takes place inland, then a land breeze
will push them offshore overnight. Clearing inland was also dictate
temps and degree of frost formation. Since questions still remain on
extent of clearing and if the winds will drop off, for now will go
with mid to upr 30s inland tonight and ptchy frost.

Some concern on Saturday that lake clouds will spread inland in
backing westerly flow and limit amount of sunshine. Prospects for
sun are better on Sunday due as warm advection erodes lake clouds,
but northern areas should see an increase in clouds late as front
slips south from nrn lwr MI.

.LONG TERM...(Sunday night through Thursday)
Issued at 330 AM EDT Fri Oct 21 2016

The active weather is back-loaded during the long term...mainly
Wednesday into Thursday.

High pressure will move from the Northern Plains sunday night east
to New England by Tuesday. That will produce a few days of dry
weather though mid week. Developing low pressure in the Plains will
make a run at the Great Lakes Wednesday into Thursday. Both the
ecmwf and gfs take the sfc low across Lower Michigan Wednesday
night. A large area of rain is progd with this system, which also
has good upper support. A short wave is progd to move across the
state late Wednesday. Light rain will linger into Thursday as the
low moves east.

Highs through the period will be close to normal...mid 50s with lows
in the 30s and 40s.


.AVIATION...(For the 06Z TAFS through 06Z Friday night)
Issued at 127 AM EDT Fri Oct 21 2016

Skies will become broken overnight and cigs will slowly
rise...slowest at the southern taf sites. We expect vfr cigs later
this morning.


Issued at 330 AM EDT Fri Oct 21 2016

Small craft advisories continue through today, and have extended
into tonight for areas south of Grand Haven where waves will be
slower to subside.


Issued at 330 PM EDT Thu Oct 20 2016

Rivers continue to improve through much of the area. Rainfall has
played out today mostly as expected. Small rises may occur along
small streams in affected locations. Otherwise, overall
precipitation chances are rather limited through the next 5 days.
Better chances for rain exist through the middle of next week. River
levels are expected to continue to fall. No flooding is forecast.


LM...Small Craft Advisory until 8 PM EDT this evening for LMZ847>849.

     Small Craft Advisory until 4 AM EDT Saturday for LMZ844>846.



MARINE...Meade is the U.S. government's official web portal to all federal, state and local government web resources and services.