Small Craft Advisory 32, NWS Grand Rapids, MI

592 
WHUS73 KGRR 310152
MWWGRR

URGENT - MARINE WEATHER MESSAGE
National Weather Service Grand Rapids MI
952 PM EDT Tue Mar 30 2021

LMZ844>849-311000-
/O.CON.KGRR.SC.Y.0032.000000T0000Z-210401T0000Z/
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-
952 PM EDT Tue Mar 30 2021

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 8 PM EDT
WEDNESDAY...

* WHAT...Northwest winds 15 to 25 knots with waves 3 to 5 feet.

* WHERE...St Joseph to Manistee.

* WHEN...Until 8 PM EDT Wednesday.

* IMPACTS...Conditions will be hazardous to small craft.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.

&&

$$

wdm

814 
WHUS73 KGRR 310817
MWWGRR

URGENT - MARINE WEATHER MESSAGE
National Weather Service Grand Rapids MI
417 AM EDT Wed Mar 31 2021

LMZ844>849-311630-
/O.EXT.KGRR.SC.Y.0032.000000T0000Z-210402T0500Z/
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-
417 AM EDT Wed Mar 31 2021

...SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL 1 AM EDT FRIDAY...

* WHAT...Northwest winds 15 to 25 knots today becoming north
  tonight and Thursday. Waves 3 to 5 feet today building to 4 to 
  7 feet tonight and Thursday.

* WHERE...St Joseph to Manistee.

* WHEN...Until 1 AM EDT Friday.

* IMPACTS...Conditions will be hazardous to small craft.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.

&&

$$

476 
WHUS73 KGRR 311544
MWWGRR

URGENT - MARINE WEATHER MESSAGE
National Weather Service Grand Rapids MI
1144 AM EDT Wed Mar 31 2021

LMZ844>849-312345-
/O.CON.KGRR.SC.Y.0032.000000T0000Z-210402T0500Z/
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-
1144 AM EDT Wed Mar 31 2021

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 1 AM EDT FRIDAY...

* WHAT...North to Northwest winds 10 to 20 knots with gusts up to
  30 knots and waves 4 to 7 feet.

* WHERE...St Joseph to Manistee.

* WHEN...Until 1 AM EDT Friday.

* IMPACTS...Conditions will be hazardous to small craft.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.

&&

$$

665 
WHUS73 KGRR 311925
MWWGRR

URGENT - MARINE WEATHER MESSAGE
National Weather Service Grand Rapids MI
325 PM EDT Wed Mar 31 2021

LMZ844>849-010330-
/O.CON.KGRR.SC.Y.0032.000000T0000Z-210402T0500Z/
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-
325 PM EDT Wed Mar 31 2021

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 1 AM EDT FRIDAY...

* WHAT...North winds 10 to 20 knots with gusts up to 25 knots 
  and waves 4 to 7 feet.

* WHERE...St Joseph to Manistee.

* WHEN...Until 1 AM EDT Friday.

* IMPACTS...Conditions will be hazardous to small craft.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.

&&

$$

735 
WHUS73 KGRR 010136
MWWGRR

URGENT - MARINE WEATHER MESSAGE
National Weather Service Grand Rapids MI
936 PM EDT Wed Mar 31 2021

LMZ844>849-010945-
/O.CON.KGRR.SC.Y.0032.000000T0000Z-210402T0500Z/
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-
936 PM EDT Wed Mar 31 2021

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 1 AM EDT FRIDAY...

* WHAT...North winds 15 to 25 knots and waves 4 to 7 feet.

* WHERE...St Joseph to Manistee.

* WHEN...Until 1 AM EDT Friday.

* IMPACTS...Conditions will be hazardous to small craft.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.

&&

$$

wdm

075 
WHUS73 KGRR 010753
MWWGRR

URGENT - MARINE WEATHER MESSAGE
National Weather Service Grand Rapids MI
353 AM EDT Thu Apr 1 2021

LMZ844>849-011600-
/O.CON.KGRR.SC.Y.0032.000000T0000Z-210402T0500Z/
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-
353 AM EDT Thu Apr 1 2021

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 1 AM EDT FRIDAY...

* WHAT...North winds to 30 knots and waves 4 to 7 feet. 

* WHERE...St Joseph to Manistee.

* WHEN...Until 1 AM EDT Friday.

* IMPACTS...Conditions will be hazardous to small craft.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.

&&

$$

326 
WHUS73 KGRR 020154
MWWGRR

URGENT - MARINE WEATHER MESSAGE
National Weather Service Grand Rapids MI
954 PM EDT Thu Apr 1 2021

LMZ844>849-020300-
/O.CAN.KGRR.SC.Y.0032.000000T0000Z-210402T0500Z/
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-
954 PM EDT Thu Apr 1 2021

...SMALL CRAFT ADVISORY IS CANCELLED...

Winds continue to diminish below criteria for a Small Craft
Advisory at all of our near shore marine sites. Considering the 
surface ridge is forecast to move across the area tonight, winds
will continue to diminish and so will the wave heights. As a
result I have canceled the Small Craft Advisory early.

$$

wdm

Area Forecast Discussion
National Weather Service Grand Rapids MI
256 PM EDT Tue Mar 30 2021

LATEST UPDATE...
Synopsis/Discussion/Marine

.SYNOPSIS...
Issued at 256 PM EDT Tue Mar 30 2021

- Cold front advances east tonight with a chance of showers

- Upper trough brings lake enhanced snow showers early Thursday

&&

.DISCUSSION...(This evening through next Tuesday)
Issued at 256 PM EDT Tue Mar 30 2021

- Cold front advances east tonight with a chance of showers

Narrow channel of Gulf moisture makes a run at Lower Michigan
tonight although there will be limited pooling of deep moisture
ahead of the front. So we expect most places to see less than a
tenth of an inch of QPF. The higher amounts, still under a quarter
inch, are expected across the southeast zones in the area of
greatest theta e advection. The front clears the

- Upper trough brings lake enhanced snow showers early Thursday

Amplified H5 trough and strong cold advection results in lake
enhanced snow showers late Wednesday night into early Thursday.
Some light accumulations are possible across the northwest zones
but generally less than an inch and not on paved surfaces so
impacts to travel are not expected.

&&

.AVIATION...(For the 12Z TAFS through 12Z Wednesday morning)
Issued at 750 AM EDT Tue Mar 30 2021

Winds will be the main story today. Southwest winds of 15 to 30
knots will gust to near 40 knots at times today from 190-210
degrees. Low level wind shear will be in place this morning with a
core of winds aloft at 2,000ft around 50 knots from the same
direction.

Clouds will gradually lower and thicken today with cirrus bases
this morning at or above 20,000ft lowering into an altocu deck
around 8,000ft this afternoon and to a stratocu deck around
4,000ft this evening. A band of showers will affect most of the
TAF sites tonight with ceilings even dipping into the MVFR
category at LAN, BTL and JXN potentially. Visibilities should
mostly be VFR with a very light rain.

&&

.MARINE...
Issued at 256 PM EDT Tue Mar 30 2021

The Gale Warning has expired and is replaced with a Small Craft
Advisory which goes through Wednesday afternoon. We may be looking
at another Gale Warning for Wednesday night as northwest winds
behind the cold front could gust to 35 knots or more.

&&

.GRR WATCHES/WARNINGS/ADVISORIES...
MI...None.
LM...Small Craft Advisory until 8 PM EDT Wednesday for LMZ844>849.

&&

SYNOPSIS...Ostuno
DISCUSSION...Ostuno
AVIATION...Duke
MARINE...Ostuno

Hazardous Weather Outlook
National Weather Service Grand Rapids MI
415 AM EDT Tue Mar 30 2021

MIZ037>040-043>046-050>052-056>059-064>067-071>074-310815-
Mason-Lake-Osceola-Clare-Oceana-Newaygo-Mecosta-Isabella-Muskegon-
Montcalm-Gratiot-Ottawa-Kent-Ionia-Clinton-Allegan-Barry-Eaton-
Ingham-Van Buren-Kalamazoo-Calhoun-Jackson-
415 AM EDT Tue Mar 30 2021

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

.DAY ONE...Today and Tonight

Windy conditions are expected today as south to southwest winds
increase to 15-30 mph. Wind gusts will reach the 35 to 45 mph
range. Some isolated power outages are possible.

.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>849-310815-
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-
415 AM EDT Tue Mar 30 2021

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

.DAY ONE...Today and Tonight

Gale force winds are expected on Lake Michigan into the early
afternoon. Waves will range from near 4 feet at South Haven to
around 9 feet off of Big and Little Sable Points. Conditions will
be hazardous to smaller craft into the evening hours.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday

Another period of larger waves is expected from daybreak on
Wednesday through the day on Thursday. Conditions will be
hazardous to smaller craft.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will not be needed.

DUKE