Marine Weather and Tide Forecast for Pentwater, MI

DISCUSSION
Issued at 308 PM EDT Tue Apr 22 2025

- Small Chances for Rain Much of This Week

We have small chances for showers and storms at times almost each forecast period through Friday. A weak warm front is located in the CWA tonight and on Wednesday. This boundary along with the interaction of a low level jet nearby will provide the chance for some isolated/scattered showers. Given the drier air in place we have have rain showers and no thunder mentioned tonight and Wednesday. Dew point depressions at the surface are around 30 degrees at this point.

Wednesday night into Thursday we have a washing out cold front that moves in from the northwest and then a reestablishing warm front. Chances for rain during these periods are on the order of 20-30 pct.

Better chances for showers and storms will come Thursday night into Friday. The increased rain chances will come from a low moving through the area sliding northeast along the front. We have high chances for precipitation given an upper shortwave moving through in conjunction with surface wave. 70-90 pct chances for rain are in the forecast Friday afternoon.

- Dry Weekend then Chance for Showers and Storms Early Next Week

The weekend looks dry with high pressure driving into the region from the northwest. Better chances for showers and storms return early next week as a cold front approaches from the west. The cold front will be pushed by an upper wave moving through the Northern Plains an Upper Midwest. These storms could be on the stronger side, but there are timing differences at this point given it is 7 days out. As it stands now, Tuesday could be an active day with storms.

- Near to Above Normal Temperatures the Next 7 days

Temperatures through the forecast period will be at or above normal the next 7 days. Normal highs are around 60 and we will push into the 70s for what appears to be 3-4 days. Warmest days look to be Thursday and next Tuesday.

AVIATION /18Z TAFS THROUGH 18Z WEDNESDAY/
Issued at 130 PM EDT Tue Apr 22 2025

Showers and a few storms that were affecting Wisconsin earlier have dried up quite a bit as they have moved toward Southern Lower early this afternoon. What is left of these is mainly a cloud deck around 7-8k ft with maybe a few sprinkles reaching the ground over Lake Michigan that will move overhead this evening. The northern terminals along I-96 will likely see the clouds partially clear out overnight. The southern terminals look to keep the cloud cover and a few sprinkles overnight. The clouds should then move out of there in the morning. Another batch of clouds and possible precipitation will likely come in late Wed, but it will be after this forecast's valid period.

MARINE
Issued at 308 PM EDT Tue Apr 22 2025

No marine concerns the next few days with what appears to be a fairly light wind regime. The wind is up aloft this evening and again tomorrow night with the passage of a couple of low level jets, but given warmer air in place we do not expect these brief upticks in wind to result in a response on the water surface. In fact, the WaveWatch3 is showing waves of 2 feet or less the next 48 hours.

GRR WATCHES/WARNINGS/ADVISORIES
MI...None.
MARINE...None.