Area Forecast Discussion
Issued by NWS Grand Rapids, MI

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629
FXUS63 KGRR 190339
AFDGRR

Area Forecast Discussion
National Weather Service Grand Rapids MI
1139 PM EDT Sun Aug 18 2019

LATEST UPDATE...
Aviation

.SYNOPSIS...
Issued at 304 PM EDT Sun Aug 18 2019

- A few more storms are possible again late Tuesday.

- Cooler Wednesday night through Saturday.

&&

.UPDATE...
Issued at 912 PM EDT Sun Aug 18 2019

Line of storms has cleared the area and now skies turning partly
cloudy from west to east with less humid air filtering in. It`s
possible that the band of clouds and light showers currently over
Iowa will clip the I-94 corridor late tonight, but only slgt chc
pops warranted for that. There is a risk of fog again tonight,
especially south of I-96 where highest dew points currently are,
but widespread dense fog is not expected at this time due to the
5-10 kt wind speeds just abv the sfc and the gradually lowering
dew pts.

&&

.DISCUSSION...(This evening through next Sunday)
Issued at 304 PM EDT Sun Aug 18 2019

Surface analysis shows a cold front just crossing Lake Michigan.
Some clearing skies behind the earlier convection are allowing the
atmosphere to recover somewhat, but we`re still a couple hours away
from any redevelopment...if it comes at all. However, convective
redevelopment remains a possibility from 4p-8p ahead of the cold
front. Convective inhibition progs suggest that SBSIN will fall to
0J/kg by 21z across the cwa.

After the front passes through, mainly dry weather is expected until
late Tuesday ahead of another cold front. We`ll maintain pops in the
grids for storm possibilities The air behind the Tuesday front will
be very comfortable as dewpoints fall into the lower 50s. Highs in
the 70s and lows in the mid 50s are expected toward the end of the
week before warmer weather returns for the weekend.

&&

.AVIATION...(For the 00Z TAFS through 00Z Monday evening)
Issued at 1130 PM EDT Sun Aug 18 2019

VFR conditions will continue for most of the overnight period but
will deteriorate to MVFR and perhaps IFR prior to daybreak mainly
at terminals southeast of KGRR due to development of patchy fog.
Any patchy fog will dissipate quickly by mid morning with VFR
conditions to follow for the rest of the day. Skies will clear
Monday evening with light and variable winds by then.

&&

.MARINE...
Issued at 304 PM EDT Sun Aug 18 2019

Frequent wind gusts to 25 knots through late afternoon will be
hazardous to small craft and waves hazardous to beach goers. Small
craft and beach hazards advisories will remain in effect through 8
pm.


&&

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

$$

UPDATE...Meade
SYNOPSIS...04
DISCUSSION...04
AVIATION...Laurens
MARINE...04



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