Area Forecast Discussion
Issued by NWS Grand Rapids, MI

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FXUS63 KGRR 190730
AFDGRR

Area Forecast Discussion
National Weather Service Grand Rapids MI
328 AM EDT THU MAY 19 2016

LATEST UPDATE...
Synopsis/Short Term/Long Term/Marine

.SYNOPSIS...
Issued at 328 AM EDT Thu May 19 2016

High pressure will essentially be parked over the Great Lakes region
from today right through the weekend. Expect plenty of sunshine and
gradually warming temperatures. Highs the next several days will be
around 70, warming well into the 70s on Sunday and Monday. The next
chance for rain does not come until the middle of next week.

&&

.SHORT TERM...(Today through Saturday)
Issued at 328 AM EDT Thu May 19 2016

Concerns are low in the short term with dry weather forecast
throughout. High temperatures should nudge up each day from around
70 today into the lower 70s for Friday and Saturday.

We should see a bit of cumulus development again today, but nothing
more than few/scattered. Some RH progs show broken cumulus
potential on Friday. Also, there looks to be a bit of mid cloud
across the south as a 500mb shortwave pushes our direction from the
west. Thinking partly to mostly sunny for Friday. Some mid cloud is
possible again on Saturday. Forecast is optimistic overall cloud
wise, but we will be watching the mid cloud potential with the
shortwave moving through Fri/Sat.

.LONG TERM...(Saturday night through Wednesday)
Issued at 328 AM EDT Thu May 19 2016

The warm and dry weather will continue for the last half of the
weekend and Monday as the ridge will remain anchored over the Great
Lakes. The ridge begins to break down and move east early next week
and moisture starts to flow into the Upper Midwest. We`ll probably
see some showers/storms west of the CWA across the Mississippi
Valley Monday night as weak short waves eject from the southwest US.
We decreased pops from guidance Monday night as moisture may take
some time moving east toward the Great Lakes. Latest GFS even has
Tuesday dry as much of the energy remains concentrated in the
southern Plains. It`s the developing low in western Kansas that is
progd to be the catalyst for pcpn potential mid week across Lower
Michigan as it eventually moves east. As a result, thunderstorm
potential should increase as we head toward mid week.

&&

.AVIATION...(For the 06Z TAFS through 06Z Thursday night)
Issued at 132 AM EDT Thu May 19 2016

Clear skies and light winds are expected today. A lake breeze will
likely develop at MKG this afternoon.

&&

.MARINE...
Issued at 328 AM EDT Thu May 19 2016

Limited wind the next several days due to high pressure will keep
Lake Michigan on the calm side. Winds are expected to be less than
10 knots into Saturday with an afternoon lake breeze expected each
day. Waves will be 2 feet or less through Saturday.

&&

.HYDROLOGY...
Issued at 1136 AM EDT Wed May 18 2016

Given the current trends, advisories at Maple Rapids and Ionia
could possibly be dropped by the end of the work week. Steady
declines should then continue right into the weekend with
primarily dry conditions pushing into early next week. Aside from
a few afternoon showers and storms Monday/Tuesday, elevated rain
chances should hold off until the middle of next week.

&&

.GRR Watches/Warnings/Advisories...
MI...Freeze Warning until 8 AM EDT this morning for MIZ037>040.

     Frost Advisory until 8 AM EDT this morning for MIZ043>046-
     050>052-056-057.

LM...None.
&&

$$

SYNOPSIS...Duke
SHORT TERM...Duke
LONG TERM...04
AVIATION...04
HYDROLOGY...JAM
MARINE...Duke



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