Beach Hazards Statement 18, NWS Grand Rapids, MI

652 
WHUS43 KGRR 201455
CFWGRR

Coastal Hazard Message
National Weather Service Grand Rapids MI
1055 AM EDT Wed Aug 20 2025

MIZ037-043-202300-
/O.CON.KGRR.BH.S.0018.250820T2000Z-250821T0300Z/
Mason-Oceana-
1055 AM EDT Wed Aug 20 2025

...BEACH HAZARDS STATEMENT REMAINS IN EFFECT FROM 4 PM EDT THIS
AFTERNOON THROUGH THIS EVENING...

* WHAT...High wave action, strong currents, and dangerous 
  swimming conditions expected. Piers may be heavily swamped by 
  waves.

* WHERE...Mason and Oceana counties.

* WHEN...From this afternoon through this evening.

* IMPACTS...Strong currents can pull swimmers into deeper water 
  and high waves can sweep people off piers.

* ADDITIONAL DETAILS...The north sides of piers will be especially
  hazardous..

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Remain out of the water to avoid hazardous swimming conditions
and do not venture out on piers. Please check with your local
authorities on potential beach closures.

&&

$$

026 
WHUS43 KGRR 201939
CFWGRR

Coastal Hazard Message
National Weather Service Grand Rapids MI
339 PM EDT Wed Aug 20 2025

MIZ037-043-210300-
/O.CON.KGRR.BH.S.0018.250820T2000Z-250821T0300Z/
Mason-Oceana-
339 PM EDT Wed Aug 20 2025

...BEACH HAZARDS STATEMENT REMAINS IN EFFECT UNTIL 11 PM EDT THIS
EVENING...

* WHAT...High wave action, strong currents, and dangerous 
  swimming conditions expected. Piers may be heavily swamped by 
  waves.

* WHERE...Mason and Oceana counties.

* WHEN...From this afternoon through this evening.

* IMPACTS...Strong currents can pull swimmers into deeper water 
  and high waves can sweep people off piers.

* ADDITIONAL DETAILS...The north sides of piers will be 
  especially hazardous.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Remain out of the water to avoid hazardous swimming conditions
and do not venture out on piers. Please check with your local
authorities on potential beach closures.

&&

$$

877 
WHUS43 KGRR 202212
CFWGRR

Coastal Hazard Message
National Weather Service Grand Rapids MI
612 PM EDT Wed Aug 20 2025

MIZ064-071-210900-
/O.EXB.KGRR.BH.S.0018.000000T0000Z-250821T0900Z/
Allegan-Van Buren-
612 PM EDT Wed Aug 20 2025

...BEACH HAZARDS STATEMENT IN EFFECT UNTIL 5 AM EDT THURSDAY...

* WHAT...High wave action, strong currents, and dangerous 
  swimming conditions expected. Piers may be heavily swamped by 
  waves.

* WHERE...Allegan and Van Buren counties.

* WHEN...Until 5 AM EDT Thursday.

* IMPACTS...Strong currents can pull swimmers into deeper water 
  and high waves can sweep people off piers.

* ADDITIONAL DETAILS...Waves and currents are expected to increase
  late this evening at beaches in Allegan and Van Buren Counties.
  South Haven North Beach is expected to have increasingly 
  dangerous conditions.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Remain out of the water to avoid hazardous swimming conditions
and do not venture out on piers. Please check with your local
authorities on potential beach closures.

&&

$$

MIZ050-056-210300-
/O.EXA.KGRR.BH.S.0018.000000T0000Z-250821T0300Z/
Muskegon-Ottawa-
612 PM EDT Wed Aug 20 2025

...BEACH HAZARDS STATEMENT IN EFFECT UNTIL 11 PM EDT THIS
EVENING...

* WHAT...High wave action, strong currents, and dangerous 
  swimming conditions expected. Piers may be heavily swamped by 
  waves.

* WHERE...Muskegon and Ottawa counties.

* WHEN...Until 11 PM EDT this evening.

* IMPACTS...Strong currents can pull swimmers into deeper water 
  and high waves can sweep people off piers.

* ADDITIONAL DETAILS...Winds and waves have increased dramatically
  between Muskegon and Holland late this evening. Strong currents
  are expected along beaches to the north of pier structures,
  including at Muskegon State Park and Holland State Park.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Remain out of the water to avoid hazardous swimming conditions
and do not venture out on piers. Please check with your local
authorities on potential beach closures.

&&

$$

MIZ037-043-210300-
/O.CON.KGRR.BH.S.0018.000000T0000Z-250821T0300Z/
Mason-Oceana-
612 PM EDT Wed Aug 20 2025

...BEACH HAZARDS STATEMENT REMAINS IN EFFECT UNTIL 11 PM EDT THIS
EVENING...

* WHAT...High wave action, strong currents, and dangerous 
  swimming conditions expected. Piers may be heavily swamped by 
  waves.

* WHERE...Mason and Oceana counties.

* WHEN...Until 11 PM EDT this evening.

* IMPACTS...Strong currents can pull swimmers into deeper water 
  and high waves can sweep people off piers.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Remain out of the water to avoid hazardous swimming conditions
and do not venture out on piers. Please check with your local
authorities on potential beach closures.

&&

$$

062 
WHUS43 KGRR 210304
CFWGRR

Coastal Hazard Message
National Weather Service Grand Rapids MI
1104 PM EDT Wed Aug 20 2025

MIZ037-043-050-056-210415-
/O.EXP.KGRR.BH.S.0018.000000T0000Z-250821T0300Z/
Mason-Oceana-Muskegon-Ottawa-
1104 PM EDT Wed Aug 20 2025

...BEACH HAZARDS STATEMENT HAS EXPIRED...

A moderate swim risk due to waves and currents will persist
between Holland and Ludington overnight, becoming a low swim risk
by Thursday morning.

$$

MIZ064-071-210900-
/O.CON.KGRR.BH.S.0018.000000T0000Z-250821T0900Z/
Allegan-Van Buren-
1104 PM EDT Wed Aug 20 2025

...BEACH HAZARDS STATEMENT REMAINS IN EFFECT UNTIL 5 AM EDT
THURSDAY...

* WHAT...High wave action, strong currents, and dangerous 
  swimming conditions expected. Piers may be heavily swamped by 
  waves.

* WHERE...Allegan and Van Buren counties.

* WHEN...Until 5 AM EDT Thursday.

* IMPACTS...Strong currents can pull swimmers into deeper water 
  and high waves can sweep people off piers.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Remain out of the water to avoid hazardous swimming conditions
and do not venture out on piers. Please check with your local
authorities on potential beach closures.

&&

$$

059 
WHUS43 KGRR 210705
CFWGRR

Coastal Hazard Message
National Weather Service Grand Rapids MI
305 AM EDT Thu Aug 21 2025

MIZ064-071-210815-
/O.CAN.KGRR.BH.S.0018.000000T0000Z-250821T0900Z/
Allegan-Van Buren-
305 AM EDT Thu Aug 21 2025

...BEACH HAZARDS STATEMENT IS CANCELLED...

Winds and waves have subsided to below hazardous levels, so the 
Beach Hazards Statement has been cancelled.

$$

Area Forecast Discussion
National Weather Service Grand Rapids MI
139 AM EDT Wed Aug 20 2025

.KEY MESSAGES...

- Seasonable temps, less humidity, and mainly dry through Fri

- Next widespread chance of rain Friday night-Saturday

- Pattern change with much cooler conditions Sunday and beyond

&&

.DISCUSSION...
Issued at 310 PM EDT Tue Aug 19 2025

- Seasonable temps, less humidity, and mainly dry through Fri

The last of the organized rain chances with this current system are
winding down quickly outside of a lingering sprinkle through the
rest of this afternoon. The only real showers left area SE of the
cold front which is east of I-69 as of 19z/3 pm EDT. Extensive cloud
cover and a worked over atmosphere from the showers/storms that
moved through early this morning has really limited instability to
work with.

Cloud cover upstream over Wisconsin is optimistic at first look for
the area to clear out tonight. Some of that may happen, but a flow
from the NE will likely bring moisture inland from Lake Huron. This,
combined with a residual moist boundary layer will lead to a
heightened chance of low clouds and/or some fog. We will finally see
some good sold clearing then after Wednesday morning, with moisture
mixing out in the form of cumulus clouds.

High pressure will then take control of the weather over the area
through Friday. Subsidence and drier air will even limit the cumulus
development Thursday and Friday. Temperatures look like they will
mostly range in the upper 70s to lower 80s through Friday as 850 mb
temps stay in the mid teens C during this time.

- Next widespread chance of rain Fri night-Sat

The upper ridge bringing the quiet weather to the area through
Friday will be flattened a bit by an upper low that is currently
over British Columbia. The leading edge of this system will arrive
in the form of a cold front Friday night from the NW.

Rain chances are not too exciting around here with the front Friday
night and Saturday. This is evident by Ensemble Mean amounts of
rainfall generally less than 0.2 inches for most of our area with
this front. A significant factor in the limited rain potential with
this is that there is really no moisture for it to work with. The
return flow ahead of the front is sourced from the Central Plains.
The best chance of pcpn will be from limited instability with the
front. Even that is quite poor as the front will be coming through
during the coolest part of the day.

- Pattern change with much cooler conditions Sun and beyond

Rain chances with the front look to end by late Saturday afternoon
with the passage of the front by that time. That does not mean the
end of the rain chances however.

This upper low ends up getting almost stuck over the Upper Midwest
and Upper Great Lakes, and ends up developing a bit stronger than
previously expected. This happens as it will be held up by Hurricane
Erin moving over the Western Atlantic and the ridge that is just
upstream of the Hurricane. Also, an upper ridge will be
strengthening over the Western U.S., helping to trap the upper low
over our area.

The first and most noticeable change with this will be much cooler
air than the area has been used to for much of this warm summer.
Highs will be close to not making it out of the 60s early next week.
The other noticeable change will be weak short waves riding through
around the southern periphery of the low. The NBM does not print off
much in the way of precipitation. We feel this could be
underforecast. Especially that 850 mb temps will be dropping down to
the mid single digits C, and we could be looking at some lake effect
rain showers if it indeed end up that cool. Cyclonic flow aloft and
the deeper colder air will definitely help that if the colder air
aloft ends up this far south.

&&

.AVIATION /06Z TAFS THROUGH 06Z THURSDAY/...
Issued at 139 AM EDT Wed Aug 20 2025

Drizzle, IFR ceilings, and MVFR visibility restrictions are being
reported at some terminals, including AZO and GRR. At GRR
precipitation has been heavy enough to wet the pavement. This is
associated with a wind convergence boundary at the leading edge
of a southwestward push of northeast winds. Observations west of
this boundary indicate winds from the north/northwest. We expect a
continuation of IFR restrictions at many of the terminals
overnight, thanks to this boundary as well as a reinforcement of
low ceilings originating from the Saginaw Bay region.

Terminals eventually will climb out of IFR into fuel alternate
MVFR ceilings by late morning/early afternoon, and finally into
VFR by afternoon/late evening. Expected timing for this remains quite
similar to what was advertised with the 00Z TAFs, with only minor
adjustments.

&&

.MARINE...
Issued at 310 PM EDT Tue Aug 19 2025

Have pushed up the Beach Hazards Statement and Small Craft Advisory
to begin now instead of waiting until late afternoon based on buoy
and webcam trends, particularly at Grand Haven. Sustained northwest
winds of 15-20 knots will cause waves to build into the 3 to 5 foot
range south of Muskegon through late tonight creating hazardous
conditions for beachgoers and boaters.

After a lull Wednesday morning, another increase in winds is
expected Wednesday afternoon/evening as gradient winds increase.
Northerly winds of 15-20 knots will lead to at least 2-4 foot
waves/a moderate swim risk across parts of the lake. A Beach Hazards
Statement/Small Craft Advisory may be needed for 3-5 foot waves/a
high swim risk south of Holland and up towards Big and Little Sable
Points. Given the existing headlines already in play and notable
lull between rounds will let the midnight shift make the final
determination as this event winds down.

A slacker gradient Thursday and Friday will then keep waves and
winds lower to finish the work week.

&&

.GRR WATCHES/WARNINGS/ADVISORIES...
MI...Beach Hazards Statement until 2 AM EDT early this morning for
     MIZ056-064-071.
MARINE...Small Craft Advisory until 2 AM EDT early this morning for
     LMZ844>846.

&&

DISCUSSION...NJJ
AVIATION...TJT
MARINE...Thomas

Hazardous Weather Outlook
National Weather Service Grand Rapids MI
715 PM EDT Tue Aug 19 2025

MIZ037>040-043>046-050>052-056>059-064>067-071>074-200830-
Mason-Lake-Osceola-Clare-Oceana-Newaygo-Mecosta-Isabella-Muskegon-
Montcalm-Gratiot-Ottawa-Kent-Ionia-Clinton-Allegan-Barry-Eaton-
Ingham-Van Buren-Kalamazoo-Calhoun-Jackson-
715 PM EDT Tue Aug 19 2025

This hazardous weather outlook is for portions of southwest Lower
Michigan.

.DAY ONE...Tonight

No hazardous weather is expected at this time.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday

No hazardous weather is expected at this time.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will not be needed.

LMZ844>849-200830-
St Joseph to South Haven MI-South Haven to Holland MI-
Holland to Grand Haven MI-Grand Haven to Whitehall MI-
Whitehall to Pentwater MI-Pentwater to Manistee MI-
715 PM EDT Tue Aug 19 2025

This hazardous weather outlook is for the nearshore waters from
St Joseph to Manistee.

.DAY ONE...Tonight

Winds, waves, and currents on Lake Michigan will be hazardous for
small craft and swimmers this evening, mainly from Grand Haven and
all beaches to the south.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday

Waves and currents may increase late in the day Wednesday, with a
moderate to potentially high swim risk.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will not be needed.