Gale Warning 22, NWS Grand Rapids, MI

279 
WHUS73 KGRR 051959 AAA
MWWGRR

URGENT - MARINE WEATHER MESSAGE...UPDATED
National Weather Service Grand Rapids MI
359 PM EDT Sat Sep 5 2020

LMZ844>849-060400-
/O.CON.KGRR.GL.W.0022.200906T1400Z-200907T0900Z/
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-
359 PM EDT Sat Sep 5 2020

...GALE WARNING REMAINS IN EFFECT FROM 10 AM SUNDAY TO 5 AM EDT
MONDAY...

* WHAT...South winds 15 to 20 knots with gusts up to 35 knots and
  waves 6 to 9 feet expected. 

* WHERE...St Joseph to Manistee.

* WHEN...From 10 AM Sunday to 5 AM EDT Monday.

* IMPACTS...Strong winds will cause hazardous waves which could 
  capsize or damage vessels and reduce visibility. 

* ADDITIONAL DETAILS...The largest waves will peak Sunday night 
  but will be 4 to 6 feet through Monday morning. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Mariners should alter plans to avoid these hazardous conditions.
Remain in port, seek safe harbor, alter course, and/or secure the
vessel for severe conditions.

&&

$$

312 
WHUS73 KGRR 052048
MWWGRR

URGENT - MARINE WEATHER MESSAGE
National Weather Service Grand Rapids MI
448 PM EDT Sat Sep 5 2020

LMZ844>849-060500-
/O.CON.KGRR.GL.W.0022.200906T1400Z-200907T0900Z/
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-
448 PM EDT Sat Sep 5 2020

...GALE WARNING REMAINS IN EFFECT FROM 10 AM SUNDAY TO 5 AM EDT
MONDAY...

* WHAT...South winds 15 to 20 knots with gusts up to 35 knots and
  waves 6 to 9 feet expected. Waves late Saturday afternoon into
  the evening could run 3 to 4 feet...creating locally hazardous
  conditions for small craft mainly south of Muskegon.

* WHERE...St Joseph to Manistee.

* WHEN...From 10 AM Sunday to 5 AM EDT Monday.

* IMPACTS...Strong winds will cause hazardous waves which could 
  capsize or damage vessels and reduce visibility.


PRECAUTIONARY/PREPAREDNESS ACTIONS...

Mariners should alter plans to avoid these hazardous conditions.
Remain in port, seek safe harbor, alter course, and/or secure the
vessel for severe conditions.

&&

$$

625 
WHUS73 KGRR 052120
MWWGRR

URGENT - MARINE WEATHER MESSAGE
National Weather Service Grand Rapids MI
520 PM EDT Sat Sep 5 2020

LMZ844>846-060530-
/O.NEW.KGRR.SC.Y.0066.200905T2120Z-200906T0100Z/
/O.CON.KGRR.GL.W.0022.200906T1400Z-200907T0900Z/
St Joseph to South Haven MI-South Haven to Holland MI-
Holland to Grand Haven MI-
520 PM EDT Sat Sep 5 2020

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 9 PM EDT THIS EVENING...
...GALE WARNING REMAINS IN EFFECT FROM 10 AM SUNDAY TO 5 AM EDT
MONDAY...

* WHAT...For the Gale Warning, south winds 15 to 25 knots with 
  gusts up to 35 knots and waves 4 to 7 feet expected. For the 
  Small Craft Advisory, northwest winds 10 to 15 knots with 
  gusts up to 25 knots and waves 3 to 5 feet.

* WHERE...St Joseph to Grand Haven.

* WHEN...For the Gale Warning, from 10 AM Sunday to 5 AM EDT 
  Monday. For the Small Craft Advisory, until 9 PM EDT this 
  evening.

* IMPACTS...Strong winds will cause hazardous waves which could 
  capsize or damage vessels and reduce visibility.


PRECAUTIONARY/PREPAREDNESS ACTIONS...

Mariners should alter plans to avoid these hazardous conditions.
Remain in port, seek safe harbor, alter course, and/or secure the
vessel for severe conditions.

&&

$$

LMZ847>849-060530-
/O.CON.KGRR.GL.W.0022.200906T1400Z-200907T0900Z/
Grand Haven to Whitehall MI-Whitehall to Pentwater MI-
Pentwater to Manistee MI-
520 PM EDT Sat Sep 5 2020

...GALE WARNING REMAINS IN EFFECT FROM 10 AM SUNDAY TO 5 AM EDT
MONDAY...

* WHAT...South winds 15 to 20 knots with gusts up to 35 knots 
  and waves 6 to 9 feet expected. Waves late Saturday afternoon 
  into the evening could run 3 to 4 feet...creating locally 
  hazardous conditions for small craft mainly south of Muskegon.

* WHERE...St Joseph to Manistee.

* WHEN...From 10 AM Sunday to 5 AM EDT Monday.

* IMPACTS...Strong winds will cause hazardous waves which could 
  capsize or damage vessels and reduce visibility.


PRECAUTIONARY/PREPAREDNESS ACTIONS...

Mariners should alter plans to avoid these hazardous conditions.
Remain in port, seek safe harbor, alter course, and/or secure the
vessel for severe conditions.

&&

$$

580 
WHUS73 KGRR 060059
MWWGRR

URGENT - MARINE WEATHER MESSAGE
National Weather Service Grand Rapids MI
859 PM EDT Sat Sep 5 2020

LMZ844>846-060900-
/O.EXP.KGRR.SC.Y.0066.000000T0000Z-200906T0100Z/
/O.CON.KGRR.GL.W.0022.200906T1400Z-200907T0900Z/
St Joseph to South Haven MI-South Haven to Holland MI-
Holland to Grand Haven MI-
859 PM EDT Sat Sep 5 2020

...GALE WARNING REMAINS IN EFFECT FROM 10 AM SUNDAY TO 5 AM EDT
MONDAY...
...SMALL CRAFT ADVISORY WILL EXPIRE AT 9 PM EDT THIS EVENING...

* WHAT...South winds 15 to 25 knots with gusts up to 35 knots 
  and waves 4 to 8 feet expected.

* WHERE...St Joseph to Grand Haven.

* WHEN...From 10 AM Sunday to 5 AM EDT Monday. 

* IMPACTS...Strong winds will cause hazardous waves which could
  capsize or damage vessels and reduce visibility.


PRECAUTIONARY/PREPAREDNESS ACTIONS...

Mariners should alter plans to avoid these hazardous conditions.
Remain in port, seek safe harbor, alter course, and/or secure the
vessel for severe conditions.

&&

$$

LMZ847>849-060900-
/O.CON.KGRR.GL.W.0022.200906T1400Z-200907T0900Z/
Grand Haven to Whitehall MI-Whitehall to Pentwater MI-
Pentwater to Manistee MI-
859 PM EDT Sat Sep 5 2020

...GALE WARNING REMAINS IN EFFECT FROM 10 AM SUNDAY TO 5 AM EDT
MONDAY...

* WHAT...South winds 15 to 20 knots with gusts up to 35 knots and
  waves 6 to 9 feet expected.

* WHERE...St Joseph to Manistee.

* WHEN...From 10 AM Sunday to 5 AM EDT Monday.

* IMPACTS...Strong winds will cause hazardous waves which could 
  capsize or damage vessels and reduce visibility.


PRECAUTIONARY/PREPAREDNESS ACTIONS...

Mariners should alter plans to avoid these hazardous conditions.
Remain in port, seek safe harbor, alter course, and/or secure the
vessel for severe conditions.

&&

$$

785 
WHUS73 KGRR 061001
MWWGRR

URGENT - MARINE WEATHER MESSAGE
National Weather Service Grand Rapids MI
601 AM EDT Sun Sep 6 2020

LMZ844>849-061815-
/O.CON.KGRR.GL.W.0022.200906T1400Z-200907T0900Z/
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-
601 AM EDT Sun Sep 6 2020

...GALE WARNING REMAINS IN EFFECT FROM 10 AM THIS MORNING TO 5 AM
EDT MONDAY...

* WHAT...South winds 20 to 30 knots with gusts up to 35 knots 
  and waves 4 to 7 feet expected.

* WHERE...St Joseph to Manistee.

* WHEN...From 10 AM this morning to 5 AM EDT Monday.

* IMPACTS...Strong winds will cause hazardous waves which could 
  capsize or damage vessels and reduce visibility.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Mariners should alter plans to avoid these hazardous conditions.
Remain in port, seek safe harbor, alter course, and/or secure the
vessel for severe conditions.

&&

$$

313 
WHUS73 KGRR 061840
MWWGRR

URGENT - MARINE WEATHER MESSAGE
National Weather Service Grand Rapids MI
240 PM EDT Sun Sep 6 2020

LMZ844>849-070245-
/O.CON.KGRR.GL.W.0022.000000T0000Z-200907T0900Z/
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-
240 PM EDT Sun Sep 6 2020

...GALE WARNING REMAINS IN EFFECT UNTIL 5 AM EDT MONDAY...

* WHAT...South winds 15 to 25 knots with gusts up to 35 knots and
  waves 5 to 8 feet.

* WHERE...St Joseph to Manistee.

* WHEN...Until 5 AM EDT Monday.

* IMPACTS...Strong winds will cause hazardous waves which could 
  capsize or damage vessels and reduce visibility.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Mariners should alter plans to avoid these hazardous conditions.
Remain in port, seek safe harbor, alter course, and/or secure the
vessel for severe conditions.

&&

$$

381 
WHUS73 KGRR 062349
MWWGRR

URGENT - MARINE WEATHER MESSAGE
National Weather Service Grand Rapids MI
749 PM EDT Sun Sep 6 2020

LMZ844>849-070800-
/O.CON.KGRR.GL.W.0022.000000T0000Z-200907T0900Z/
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-
749 PM EDT Sun Sep 6 2020

...GALE WARNING REMAINS IN EFFECT UNTIL 5 AM EDT MONDAY...

* WHAT...South winds 15 to 25 knots with gusts up to 35 knots 
  and waves 5 to 9 feet.

* WHERE...St Joseph to Manistee.

* WHEN...Until 5 AM EDT Monday.

* IMPACTS...Strong winds will cause hazardous waves which could 
  capsize or damage vessels and reduce visibility.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Mariners should alter plans to avoid these hazardous conditions.
Remain in port, seek safe harbor, alter course, and/or secure the
vessel for severe conditions.

&&

$$

126 
WHUS73 KGRR 070741
MWWGRR

URGENT - MARINE WEATHER MESSAGE
National Weather Service Grand Rapids MI
341 AM EDT Mon Sep 7 2020

LMZ844>849-071545-
/O.CAN.KGRR.GL.W.0022.000000T0000Z-200907T0900Z/
/O.NEW.KGRR.SC.Y.0067.200907T0741Z-200907T2100Z/
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-
341 AM EDT Mon Sep 7 2020

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 5 PM EDT THIS AFTERNOON...
...GALE WARNING IS CANCELLED...

* WHAT...Northwest winds 15 to 25 knots with gusts up to 30 
  knots and waves 5 to 8 feet.

* WHERE...St Joseph to Manistee.

* WHEN...Until 5 PM EDT this afternoon.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

Area Forecast Discussion
National Weather Service Grand Rapids MI
329 PM EDT Sat Sep 5 2020

LATEST UPDATE...
Synopsis/Discussion/Marine

.SYNOPSIS...
Issued at 326 PM EDT Sat Sep 5 2020

- Showers and Thunderstorms Daytime Sunday

- Strong to Severe Thunderstorms Possible Sunday Night

- Cooler and wetter pattern next week

&&

.DISCUSSION...(This evening through next Saturday)
Issued at 326 PM EDT Sat Sep 5 2020

--Showers and Thunderstorms Daytime Sunday--

The upcoming system will consist of two parts. The first will be
arriving Sunday morning. This MCS will be fairly moist and will
coincide with a warm frontal boundary. Scattered showers and a
few embedded thunderstorms are expected. The CAPE is lacking, and
LCL's will be above 2KFT. This MCS will exit early Sunday
afternoon with a line of storms possible in its wake. Those storms
in the warm environment should be fairly isolated, especially
according to the latest NAM NEST.

--Strong to Severe Thunderstorms Possible Sunday Night--

The second part of the system will be a line of strong to severe
storms Sunday evening.  A robust upper level low that the models
have a good handle on will be moving through Southern Canada Sunday
afternoon. This will coincide with an elongated trough extending
into the central US. There is also a deepening short wave at 850mb
along with an anomalous 850mb 55kt low level jet that will be
over Michigan between 00Z to 06Z Monday. This Jet, along with the
instability from the front will couple with slightly anomalous
PWATs and should have all the ingredients for strong to severe
convection.

 The DCAPE values will increase to 1-2k Joules Sunday night. That
shows there is a potential for damaging winds. The biggest areas of
concern are the counties along the lakeshore, where SPC has a slight
risk out, though severe weather will be possible as the line moves
across southwest Michigan through the first half of the overnight
period. LCL's will be lowest through the north, and given the shear
that will be provided by the strong LLJ, a tornado cannot be ruled
out.

The Low Level Jet should help maintain the line as it moves through
Southern Lower Michigan, and should exit the region by 2 AM.

--Cooler and wetter pattern next week--

As the upper level low exits the region Monday, there will be
copious amounts of moisture that pools into the region. The latest
mid to long range models have shifted the best moisture further
north. However rain remains possible mid week. The coldest air
behind the front will be Monday night into Tuesday. Expect High
Temperatures on Tuesday to be in the 60s. Which is well below
normal. However, temperatures should recover quickly and be in the
70s through the rest of the week.

Another upper level system will swing through late next week. There
is some disparity in timing but that could bring a wetter period
through next weekend.

&&

.AVIATION...(For the 12Z TAFS through 12Z Sunday morning)
Issued at 741 AM EDT Sat Sep 5 2020

VFR conditions will prevail through tonight. Winds will be light
southwest today then go west to northwest around 10 knots this
evening.

&&

.MARINE...
Issued at 326 PM EDT Sat Sep 5 2020

Winds and waves will increase Sunday through Sunday night. Winds
will begin from the south at 25 kts and then steadily increasing
into Sunday night. The strong Winds aloft will bring  Gale force
winds Sunday over Lake Michigan. The waves will build to 4 to 6
feet Sunday afternoon with 8 to 10 foot seas Sunday night into
Monday morning. The winds will shift to the southwest and then
the west behind the passing front. Winds should decrease slowly
through Monday with waves subsiding to 2 to 4 feet Monday night.

&&

.GRR WATCHES/WARNINGS/ADVISORIES...
MI...Beach Hazards Statement from Sunday morning through Monday
     afternoon for MIZ037-043-050-056-064-071.

LM...Gale Warning from 10 AM Sunday to 5 AM EDT Monday for LMZ844>849.

&&

SYNOPSIS...Ceru
DISCUSSION...Ceru
AVIATION...Ostuno
MARINE...Ceru

Hazardous Weather Outlook
National Weather Service Grand Rapids MI
446 AM EDT Sat Sep 5 2020

MIZ037>040-043>046-050>052-056>059-064>067-071>074-060900-
Mason-Lake-Osceola-Clare-Oceana-Newaygo-Mecosta-Isabella-Muskegon-
Montcalm-Gratiot-Ottawa-Kent-Ionia-Clinton-Allegan-Barry-Eaton-
Ingham-Van Buren-Kalamazoo-Calhoun-Jackson-
446 AM EDT Sat Sep 5 2020

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

.DAY ONE...Today and Tonight

No hazardous weather is expected at this time.

.DAYS TWO THROUGH SEVEN...Sunday through Friday

There is a marginal risk of severe weather Sunday night along with
heavy rain that could cause minor flooding.

.SPOTTER INFORMATION STATEMENT...

Spotter activation may be needed Sunday night.

LMZ844>849-060900-
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-
446 AM EDT Sat Sep 5 2020

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

.DAY ONE...Today and Tonight

No hazardous weather is expected at this time.

.DAYS TWO THROUGH SEVEN...Sunday through Friday

Winds and waves will be hazardous to small craft and strong
currents will be hazardous to swimmers on Sunday and Monday.

Thunderstorms could bring strong wind gusts Sunday night along
with lightning strikes on Lake Michigan.