Gale Warning 4, NWS Detroit, MI

750 
WHUS73 KDTX 180240
MWWDTX

URGENT - MARINE WEATHER MESSAGE
National Weather Service Detroit/Pontiac MI
940 PM EST Fri Jan 17 2020

LHZ361>363-181445-
/O.CON.KDTX.GL.W.0004.200118T0900Z-200118T2100Z/
Lake Huron from 5NM east of Mackinac Bridge to Presque Isle Lt
beyond 5 NM off shore-
Lake Huron from Presque Isle Light to Sturgeon Point MI beyond
5NM off shore-
Lake Huron from Sturgeon Point to Alabaster MI beyond 5NM off
shore-
940 PM EST Fri Jan 17 2020

...GALE WARNING REMAINS IN EFFECT FROM 4 AM TO 4 PM EST
SATURDAY...

* WHAT...Expect sustained winds up to 28 knots from the 
  southeast with gusts up to 36 knots. The largest significant 
  waves will be 11 feet with a potential maximum wave height of 
  16 feet.

* WHERE...Lake Huron from 5NM east of Mackinac Bridge to Presque 
  Isle Lt beyond 5 NM off shore, Lake Huron from Sturgeon Point 
  to Alabaster MI beyond 5NM off shore and Lake Huron from 
  Presque Isle Light to Sturgeon Point MI beyond 5NM off shore.

* WHEN...The maximum winds are expected around 11 AM EST 
  Saturday with the largest waves expected around 2 PM EST 
  Saturday.

* 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.

&&

$$

LHZ441>443-462>464-181445-
/O.CON.KDTX.GL.W.0004.200118T0900Z-200119T0900Z/
Port Austin to Harbor Beach MI-Harbor Beach to Port Sanilac MI-
Port Sanilac to Port Huron MI-
Lake Huron from Port Austin to Harbor Beach beyond 5NM Off Shore-
Lake Huron from Harbor Beach to Port Sanilac beyond 5NM Off Shore-
Lake Huron from Port Sanilac to Port Huron beyond 5NM Off Shore-
940 PM EST Fri Jan 17 2020

...GALE WARNING REMAINS IN EFFECT FROM 4 AM SATURDAY TO 4 AM EST
SUNDAY...

* WHAT...Expect sustained winds up to 28 knots from the south 
  with gusts up to 36 knots. The largest significant waves will 
  be 9 feet with a potential maximum wave height of 13 feet.

* WHERE...Portions of Lake Huron. 

* WHEN...The maximum winds are expected around 10 AM EST 
  Saturday with the largest waves expected around 1 PM EST 
  Saturday.

* 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.

&&

$$

LCZ460-LEZ444-181445-
/O.CON.KDTX.GL.W.0004.200118T2100Z-200119T0900Z/
Lake St Clair-
Michigan Waters of Lake Erie from Detroit River to North Cape MI-
940 PM EST Fri Jan 17 2020

...GALE WARNING REMAINS IN EFFECT FROM 4 PM SATURDAY TO 4 AM EST
SUNDAY...

* WHAT...Expect sustained winds up to 25 knots from the west 
  with gusts up to 37 knots. The largest significant waves will 
  be 3 feet with a potential maximum wave height of 4 feet.

* WHERE...In Lake St Clair, Lake St Clair. In Lake Erie, 
  Michigan Waters of Lake Erie from Detroit River to North Cape 
  MI.

* WHEN...The maximum winds are expected around 9 PM EST Saturday 
  with the largest waves expected around 4 PM EST Saturday.

* 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.

&&

$$

LHZ421-422-181445-
/O.CON.KDTX.SC.Y.0008.200118T0900Z-200119T0900Z/
Outer Saginaw Bay SW of Alabaster to Port Austin MI to Inner
Saginaw Bay-Inner Saginaw Bay SW of Point Au Gres to Bay Port MI-
940 PM EST Fri Jan 17 2020

...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 4 AM SATURDAY TO
4 AM EST SUNDAY...

* WHAT...Expect sustained winds up to 24 knots from the 
  southwest with gusts up to 33 knots. The largest significant 
  waves will be 3 feet with a potential maximum wave height of 4 
  feet.

* WHERE...Inner Saginaw Bay SW of Point Au Gres to Bay Port MI 
  and Outer Saginaw Bay SW of Alabaster to Port Austin MI to 
  Inner Saginaw Bay.

* WHEN...The maximum winds are expected around 7 AM EST Saturday 
  with the largest waves expected around 9 AM EST Saturday.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

426 
WHUS73 KDTX 181436
MWWDTX

URGENT - MARINE WEATHER MESSAGE
National Weather Service Detroit/Pontiac MI
936 AM EST Sat Jan 18 2020

LHZ422-181545-
/O.CAN.KDTX.SC.Y.0008.000000T0000Z-200119T0900Z/
Inner Saginaw Bay SW of Point Au Gres to Bay Port MI-
936 AM EST Sat Jan 18 2020

...SMALL CRAFT ADVISORY IS CANCELLED...

Inner Saginaw Bay is mostly ice covered.

$$

LEZ444-190245-
/O.NEW.KDTX.LO.Y.0002.200118T2000Z-200119T1800Z/
/O.CON.KDTX.GL.W.0004.200118T2100Z-200119T0900Z/
Michigan Waters of Lake Erie from Detroit River to North Cape MI-
936 AM EST Sat Jan 18 2020

...LOW WATER ADVISORY IN EFFECT FROM 3 PM THIS AFTERNOON TO 1 PM
EST SUNDAY...
...GALE WARNING REMAINS IN EFFECT FROM 4 PM THIS AFTERNOON TO
4 AM EST SUNDAY...

* WHAT...During the Gale Warning, expect sustained winds up to 
  25 knots from the west with gusts up to 36 knots. The largest 
  significant waves will be 4 feet with a potential maximum wave 
  height of 5 feet. During the Low Water Advisory, abnormally 
  low water levels expected.

* WHERE...Michigan Waters of Lake Erie from Detroit River to 
  North Cape MI.

* WHEN...During the Gale Warning, the maximum winds are expected 
  around 11 PM EST Saturday with the largest waves expected 
  around 4 PM EST Saturday. During the Low Water Advisory, the 
  maximum winds are expected around 11 PM EST Saturday with the 
  largest waves expected around 3 PM EST Saturday.

* IMPACTS...Strong winds will cause hazardous waves which could 
  capsize or damage vessels and reduce visibility. Below normal 
  water levels will result in hazardous navigating conditions.

* ADDITIONAL DETAILS...As westerly gales develop late this
  afternoon and evening, water levels will drop below the critical
  mark for safe navigation. 

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.

Mariners should navigate shallow waters with extreme caution due
to below normal water levels.

&&

$$

LHZ361>363-182100-
/O.CON.KDTX.GL.W.0004.000000T0000Z-200118T2100Z/
Lake Huron from 5NM east of Mackinac Bridge to Presque Isle Lt
beyond 5 NM off shore-
Lake Huron from Presque Isle Light to Sturgeon Point MI beyond
5NM off shore-
Lake Huron from Sturgeon Point to Alabaster MI beyond 5NM off
shore-
936 AM EST Sat Jan 18 2020

...GALE WARNING REMAINS IN EFFECT UNTIL 4 PM EST THIS AFTERNOON...

* WHAT...Expect sustained winds up to 28 knots from the 
  southeast with gusts up to 36 knots. The largest significant 
  waves will be 11 feet with a potential maximum wave height of 
  16 feet.

* WHERE...Lake Huron from 5NM east of Mackinac Bridge to Presque 
  Isle Lt beyond 5 NM off shore, Lake Huron from Sturgeon Point 
  to Alabaster MI beyond 5NM off shore and Lake Huron from 
  Presque Isle Light to Sturgeon Point MI beyond 5NM off shore.

* WHEN...The maximum winds are expected around 11 AM EST 
  Saturday with the largest waves expected around 2 PM EST 
  Saturday.

* 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.

&&

$$

LCZ460-190245-
/O.CON.KDTX.GL.W.0004.200118T2100Z-200119T0900Z/
Lake St Clair-
936 AM EST Sat Jan 18 2020

...GALE WARNING REMAINS IN EFFECT FROM 4 PM THIS AFTERNOON TO
4 AM EST SUNDAY...

* WHAT...Expect sustained winds up to 25 knots from the west 
  with gusts up to 37 knots. The largest significant waves will 
  be 3 feet with a potential maximum wave height of 4 feet.

* WHERE...Lake St Clair.

* WHEN...The maximum winds are expected around 9 PM EST Saturday 
  with the largest waves expected around 4 PM EST Saturday.

* 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.

&&

$$

LHZ441>443-462>464-190245-
/O.CON.KDTX.GL.W.0004.000000T0000Z-200119T0900Z/
Port Austin to Harbor Beach MI-Harbor Beach to Port Sanilac MI-
Port Sanilac to Port Huron MI-
Lake Huron from Port Austin to Harbor Beach beyond 5NM Off Shore-
Lake Huron from Harbor Beach to Port Sanilac beyond 5NM Off Shore-
Lake Huron from Port Sanilac to Port Huron beyond 5NM Off Shore-
936 AM EST Sat Jan 18 2020

...GALE WARNING REMAINS IN EFFECT UNTIL 4 AM EST SUNDAY...

* WHAT...Expect sustained winds up to 28 knots from the south 
  with gusts up to 36 knots. The largest significant waves will 
  be 9 feet with a potential maximum wave height of 13 feet.

* WHERE...Portions of Lake Huron. 

* WHEN...The maximum winds are expected around 10 AM EST 
  Saturday with the largest waves expected around 1 PM EST 
  Saturday.

* 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.

&&

$$

LHZ421-190245-
/O.CON.KDTX.SC.Y.0008.000000T0000Z-200119T0900Z/
Outer Saginaw Bay SW of Alabaster to Port Austin MI to Inner
Saginaw Bay-
936 AM EST Sat Jan 18 2020

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 4 AM EST SUNDAY...

* WHAT...Expect sustained winds up to 24 knots from the 
  southwest with gusts up to 33 knots. The largest significant 
  waves will be 3 feet with a potential maximum wave height of 4 
  feet.

* WHERE...Outer Saginaw Bay SW of Alabaster to Port Austin MI to 
  Inner Saginaw Bay.

* WHEN...The maximum winds are expected around 7 AM EST Saturday 
  with the largest waves expected around 9 AM EST Saturday.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

598 
WHUS73 KDTX 182019
MWWDTX

URGENT - MARINE WEATHER MESSAGE
National Weather Service Detroit/Pontiac MI
319 PM EST Sat Jan 18 2020

LHZ361-362-182130-
/O.CAN.KDTX.GL.W.0004.000000T0000Z-200118T2100Z/
Lake Huron from 5NM east of Mackinac Bridge to Presque Isle Lt
beyond 5 NM off shore-
Lake Huron from Presque Isle Light to Sturgeon Point MI beyond
5NM off shore-
319 PM EST Sat Jan 18 2020

...GALE WARNING IS CANCELLED...

Winds have dropped below gale force.

$$

LHZ421-190830-
/O.UPG.KDTX.SC.Y.0008.000000T0000Z-200119T0900Z/
/O.EXA.KDTX.GL.W.0004.000000T0000Z-200119T0900Z/
Outer Saginaw Bay SW of Alabaster to Port Austin MI to Inner
Saginaw Bay-
319 PM EST Sat Jan 18 2020

...GALE WARNING IN EFFECT UNTIL 4 AM EST SUNDAY...

* WHAT...Expect sustained winds up to 24 knots from the 
  southwest with gusts up to 33 knots. The largest significant 
  waves will be 3 feet with a potential maximum wave height of 4 
  feet.

* WHERE...Outer Saginaw Bay SW of Alabaster to Port Austin MI to 
  Inner Saginaw Bay.

* WHEN...The maximum winds are expected around 10 PM EST 
  Saturday with the largest waves expected around 8 PM EST 
  Saturday.

* 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.

&&

$$

LEZ444-190830-
/O.EXT.KDTX.GL.W.0004.200118T2019Z-200119T1200Z/
/O.CON.KDTX.LO.Y.0002.000000T0000Z-200119T1800Z/
Michigan Waters of Lake Erie from Detroit River to North Cape MI-
319 PM EST Sat Jan 18 2020

...GALE WARNING NOW IN EFFECT UNTIL 7 AM EST SUNDAY...
...LOW WATER ADVISORY REMAINS IN EFFECT UNTIL 1 PM EST SUNDAY...

* WHAT...During the Gale Warning, expect sustained winds up to 
  25 knots from the west with gusts up to 36 knots. The largest 
  significant waves will be 4 feet with a potential maximum wave 
  height of 5 feet. During the Low Water Advisory, abnormally 
  low water levels expected.

* WHERE...Michigan Waters of Lake Erie from Detroit River to 
  North Cape MI.

* WHEN...The maximum winds are expected around 2 AM EST Sunday 
  with the largest waves expected around 3 PM EST Saturday.

* IMPACTS...Strong winds will cause hazardous waves which could 
  capsize or damage vessels and reduce visibility. Below normal 
  water levels will result in hazardous navigating conditions.

* ADDITIONAL DETAILS...As of 9:50 AM EST Saturday, the water level
  at Toledo was 63 inches above low water datum, or 39 inches
  above the critical mark for safe navigation. Strong west winds
  over the western basin of Lake Erie are expected to cause water
  levels to drop below the critical mark late this afternoon
  through late Sunday 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.

Mariners should navigate shallow waters with extreme caution due
to below normal water levels.

&&

$$

LCZ460-190830-
/O.EXT.KDTX.GL.W.0004.200118T2019Z-200119T1200Z/
Lake St Clair-
319 PM EST Sat Jan 18 2020

...GALE WARNING NOW IN EFFECT UNTIL 7 AM EST SUNDAY...

* WHAT...Expect sustained winds up to 25 knots from the west 
  with gusts up to 37 knots. The largest significant waves will 
  be 3 feet with a potential maximum wave height of 4 feet.

* WHERE...Lake St Clair.

* WHEN...The maximum winds are expected around 8 PM EST Saturday 
  with the largest waves expected around 8 PM EST Saturday.

* 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.

&&

$$

LHZ363-190830-
/O.EXT.KDTX.GL.W.0004.000000T0000Z-200119T0900Z/
Lake Huron from Sturgeon Point to Alabaster MI beyond 5NM off
shore-
319 PM EST Sat Jan 18 2020

...GALE WARNING NOW IN EFFECT UNTIL 4 AM EST SUNDAY...

* WHAT...Expect sustained winds up to 28 knots from the 
  southeast with gusts up to 36 knots. The largest significant 
  waves will be 11 feet with a potential maximum wave height of 
  16 feet.

* WHERE...Lake Huron from 5NM east of Mackinac Bridge to Presque 
  Isle Lt beyond 5 NM off shore, Lake Huron from Sturgeon Point 
  to Alabaster MI beyond 5NM off shore and Lake Huron from 
  Presque Isle Light to Sturgeon Point MI beyond 5NM off shore.

* WHEN...The maximum winds are expected around 1 AM EST Sunday 
  with the largest waves expected around 3 PM EST Saturday.

* 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.

&&

$$

LHZ441>443-462>464-190830-
/O.CON.KDTX.GL.W.0004.000000T0000Z-200119T0900Z/
Port Austin to Harbor Beach MI-Harbor Beach to Port Sanilac MI-
Port Sanilac to Port Huron MI-
Lake Huron from Port Austin to Harbor Beach beyond 5NM Off Shore-
Lake Huron from Harbor Beach to Port Sanilac beyond 5NM Off Shore-
Lake Huron from Port Sanilac to Port Huron beyond 5NM Off Shore-
319 PM EST Sat Jan 18 2020

...GALE WARNING REMAINS IN EFFECT UNTIL 4 AM EST SUNDAY...

* WHAT...Expect sustained winds up to 28 knots from the south 
  with gusts up to 36 knots. The largest significant waves will 
  be 9 feet with a potential maximum wave height of 13 feet.

* WHERE...Portions of Lake Huron.

* WHEN...The maximum winds are expected around 10 AM EST 
  Saturday with the largest waves expected around 1 PM EST 
  Saturday.

* 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.

&&

$$

121 
WHUS73 KDTX 190840
MWWDTX

URGENT - MARINE WEATHER MESSAGE
National Weather Service Detroit/Pontiac MI
340 AM EST Sun Jan 19 2020

LHZ421-441>443-192045-
/O.EXP.KDTX.GL.W.0004.000000T0000Z-200119T0900Z/
/O.NEW.KDTX.SC.Y.0009.200119T0900Z-200120T1000Z/
Outer Saginaw Bay SW of Alabaster to Port Austin MI to Inner
Saginaw Bay-Port Austin to Harbor Beach MI-
Harbor Beach to Port Sanilac MI-Port Sanilac to Port Huron MI-
340 AM EST Sun Jan 19 2020

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 5 AM EST MONDAY...
...GALE WARNING WILL EXPIRE AT 4 AM EST EARLY THIS MORNING...

* WHAT...Expect sustained winds up to 22 knots from the 
  northwest with gusts up to 31 knots. The largest significant 
  waves will be 7 feet with a potential maximum wave height of 
  10 feet.

* WHERE...Outer Saginaw Bay SW of Alabaster to Port Austin MI to 
  Inner Saginaw Bay, Port Austin to Harbor Beach MI, Harbor 
  Beach to Port Sanilac MI and Port Sanilac to Port Huron MI.

* WHEN...The maximum winds are expected around 5 AM EST Sunday 
  with the largest waves expected around 5 PM EST Sunday.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

LHZ363-462>464-190945-
/O.EXP.KDTX.GL.W.0004.000000T0000Z-200119T0900Z/
Lake Huron from Sturgeon Point to Alabaster MI beyond 5NM off
shore-
Lake Huron from Port Austin to Harbor Beach beyond 5NM Off Shore-
Lake Huron from Harbor Beach to Port Sanilac beyond 5NM Off Shore-
Lake Huron from Port Sanilac to Port Huron beyond 5NM Off Shore-
340 AM EST Sun Jan 19 2020

...GALE WARNING WILL EXPIRE AT 4 AM EST EARLY THIS MORNING...

Westerly flow will become northerly this morning with gusts
diminishing to around 30 knots. Any remaining gusts to gale force
will be transient.

$$

LEZ444-191800-
/O.CON.KDTX.GL.W.0004.000000T0000Z-200119T1200Z/
/O.CON.KDTX.LO.Y.0002.000000T0000Z-200119T1800Z/
Michigan Waters of Lake Erie from Detroit River to North Cape MI-
340 AM EST Sun Jan 19 2020

...GALE WARNING REMAINS IN EFFECT UNTIL 7 AM EST THIS MORNING...
...LOW WATER ADVISORY REMAINS IN EFFECT UNTIL 1 PM EST THIS
AFTERNOON...

* WHAT...During the Gale Warning, expect sustained winds up to 
  25 knots from the west with gusts up to 34 knots. The largest 
  significant waves will be 3 feet with a potential maximum wave 
  height of 4 feet. During the Low Water Advisory, abnormally 
  low water levels.

* WHERE...Michigan Waters of Lake Erie from Detroit River to 
  North Cape MI.

* WHEN...The maximum winds are expected around 3 AM EST Sunday 
  with the largest waves expected around 3 AM EST Sunday.

* IMPACTS...Strong winds will cause hazardous waves which could 
  capsize or damage vessels and reduce visibility. Below normal 
  water levels will result in hazardous navigating conditions.

* ADDITIONAL DETAILS...As of 300 AM, the water level at Toledo was
  11 inches above low water datum, or 13 inches below the critical
  mark for safe navigation. Strong west winds over the western
  basin of Lake Erie will maintain these low water levels early
  this 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.

Mariners should navigate shallow waters with extreme caution due
to below normal water levels.

&&

$$

LCZ460-191200-
/O.CON.KDTX.GL.W.0004.000000T0000Z-200119T1200Z/
Lake St Clair-
340 AM EST Sun Jan 19 2020

...GALE WARNING REMAINS IN EFFECT UNTIL 7 AM EST THIS MORNING...

* WHAT...Expect sustained winds up to 21 knots from the west with
  gusts up to 33 knots. The largest significant waves will be 2 
  feet with a potential maximum wave height of 3 feet.

* WHERE...Lake St Clair.

* WHEN...The maximum winds are expected around 3 AM EST Sunday 
  with the largest waves expected around 5 AM EST Sunday.

* 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.

&&

$$

354 
WHUS73 KDTX 191154
MWWDTX

URGENT - MARINE WEATHER MESSAGE
National Weather Service Detroit/Pontiac MI
654 AM EST Sun Jan 19 2020

LEZ444-191300-
/O.CAN.KDTX.LO.Y.0002.000000T0000Z-200119T1800Z/
/O.EXP.KDTX.GL.W.0004.000000T0000Z-200119T1200Z/
Michigan Waters of Lake Erie from Detroit River to North Cape MI-
654 AM EST Sun Jan 19 2020

...LOW WATER ADVISORY IS CANCELLED...
...GALE WARNING WILL EXPIRE AT 7 AM EST THIS MORNING...

Westerly winds have diminished to 20 to 25 knots and water levels
have begun to rise back above the critical mark for safe
navigation.

$$

LCZ460-191300-
/O.EXP.KDTX.GL.W.0004.000000T0000Z-200119T1200Z/
Lake St Clair-
654 AM EST Sun Jan 19 2020

...GALE WARNING WILL EXPIRE AT 7 AM EST THIS MORNING...

Westerly winds have diminished to 20 to 25 knots

$$

LHZ421-441>443-192100-
/O.CON.KDTX.SC.Y.0009.000000T0000Z-200120T1000Z/
Outer Saginaw Bay SW of Alabaster to Port Austin MI to Inner
Saginaw Bay-Port Austin to Harbor Beach MI-
Harbor Beach to Port Sanilac MI-Port Sanilac to Port Huron MI-
654 AM EST Sun Jan 19 2020

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 5 AM EST MONDAY...

* WHAT...Expect sustained winds up to 21 knots from the north 
  with gusts up to 30 knots. The largest significant waves will 
  be 7 feet with a potential maximum wave height of 10 feet.

* WHERE...Port Austin to Harbor Beach MI, Harbor Beach to Port 
  Sanilac MI, Port Sanilac to Port Huron MI and Outer Saginaw 
  Bay SW of Alabaster to Port Austin MI to Inner Saginaw Bay.

* WHEN...The maximum winds are expected around 2 PM EST Sunday 
  with the largest waves expected around 5 PM EST Sunday.

* 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 Detroit/Pontiac MI
601 AM EST Fri Jan 17 2020

.AVIATION...

Residual lake stratus between 2500-3000 feet will gradually erode
early this morning and impact mainly terminals north of the I-94
corridor. Thereafter, VFR conditions are expected into evening
before snow spreads quickly into the region late evening into the
overnight within strong warm air advection in advance of approaching
low pressure. Periods of heavy snow can be expected overnight into
early Saturday with IFR/LIFR conditions quite possible. Winds will
become ESE and increase to 10-15 knots by tonight.

For DTW...VFR into this evening with snow, heavy at times, then
moving into terminal by around midnight and persisting into parts of
Saturday morning. A transition to sleet/rain showers will be
possible by mid/late Saturday morning.

 DTW THRESHOLD PROBABILITIES...

* High for ceilings 5 kft or less tonight into Saturday.

* High for vsbys aob 1/2sm and/or cigs aob 200 feet overnight
  tonight into early Saturday morning.

* High for precipitation type as all snow tonight, medium that
  precipitation will change to sleet and/or rain showers Saturday.

&&

.PREV DISCUSSION...
Issued at 451 AM EST Fri Jan 17 2020

DISCUSSION...

An impactful winter storm is expected to produce periods of heavy
accumulating snowfall for Southeast Michigan Friday night through
Saturday.

For this morning, mid-level isentropic downglide will facilitate
increasing dewpoint depressions for much of the daylight hours
keeping conditions dry and chilly. 850mb temperature spread ranges
from -8C to -12C translating to surface lows hovering in the upper
teens by daybreak. Decentralized surface pressure field over lower
MI will prohibit much of a gradient keeping winds benign as
tropospheric ridging allows for anticyclonic flow induced subsidence
paving the way for occasional cloud breaks. High cloud will advect
en-masse aloft ahead of the next disturbance. In fact, current GOES-
E RGB channel depict the ridge making progress into SW lower MI with
incoming cirrus. High temperatures will remain in line with normal
climatological values today, just below freezing.

Attention turns to the upcoming winter storm starting late Friday...
Upper-level dynamics fields continue to suggest the merging of
northern and southern streams of the split jet by 18Z Friday. This
will support the rapid intensification of the combined upper-level
wave as heights plummet and geostrophic velocities surge over the
Missouri basin Friday evening. The feature will induce rapid
cyclogenesis on the lee-side of the Rockies kicking a surface low
eastward as deep layer cyclonic flow ensues. Given the broad reach
of this system, the 925-850 mb layer will quickly become saturated
as efficient moist WAA converges up the Mississippi valley
characterized by strong low-level ThetaE advection rates (over
20C/12hr) across the MI/OH border after 00Z Saturday. The moisture
gradient remains very sharp along the affiliated warm layer such
that 850mb dewpoint temperatures will jump 25C in less than 3 hours
late Friday night as the event gets underway.

Shifting focus to amounts, SLRs appear to fluctuate near
climatological values (about 12:1) with the first round of snow.
Forecast soundings illustrate excellent supersaturation (wrt ice)
prior to 12Z across the southern counties. Given sufficient cold air
in place ahead of the moisture plume, a well aligned DGZ aloft will
work in tandem with efficient riming process to created large and
fluffy flakes overnight. Model QPF pushes liquid equivalent values
into the 0.75-1.00 inch range through Saturday evening south of the
M-59 corridor favoring periods of heavy snowfall as rates approach
the 1 in/hr mark. Deformation will play a two-fold role with this
event as the NAM depicts an initial deformation axis along the I-94
corridor followed by a second period as the low lifts north later on
Saturday. This will help further enhance areas of synoptic ascent
and mesoscale vertical motions to produce localized areas up to 8
inches. Snow totals fall off heading north of M-59 as moisture
diminishes, thus the current breakout between Warning/Advisory.
Overall, 4-7 inches of total snowfall is the most likely scenario at
this juncture, before the melt-off begins.

The largest source of uncertainty with this event lies in timing the
arrival of warmer air Saturday morning. Surface temperatures will
climb above freezing on Saturday from southwest to northeast as
easterly flow veers southerly. Precipitation will still be on-going
in some areas which increases the likelihood of a snow-sleet-rain
progressing phase change. Once the snow is undercut by warmer air,
the melting and runoff processes that follow could make for areas of
localized ponding or flooding in poor draining areas by the
afternoon. Temperatures late Saturday afternoon could even approach
40F in the Metro area (accelerating snow-melt) before temperatures
retreat again Saturday night once the dry slot works around the
back side of system delivering revived zonal flow.

Upper low lingers on Sunday and Monday with limited as chillier
temperatures persist with limited potential for precipitation.
Meanwhile, strong high pressure will take hold over the central
Plains under an expanding ridge which will generally maintain a NW
flow pattern through Tuesday.

MARINE...

Winds will relax through the morning as a strong area of high
pressure passes overhead weakening the pressure gradient. Wind
through the afternoon will be relatively light (under 20 knots)
before ramping up again tonight ahead of the next low pressure
system. This next low will deepen while tracking northeast through
the central Great Lakes on Saturday bringing a period of heavy wet
snow Friday night into Saturday morning. Winds will likely become an
issue as well as initially they increase Friday night ahead of the
warm front. Winds could briefly touch gales across central Lake
Huron but confidence is low at this point. Winds will then switch to
strong westerly late Saturday behind a cold front with a good chance
of reaching gale force across western Lake Erie where a Gale Watch
will be issued. Gale potential is slight less north through Lake St
Clair and southern Lake Huron and will forgo a watch at this time.

&&

.DTX WATCHES/WARNINGS/ADVISORIES...
MI...Winter Weather Advisory from midnight tonight to noon EST Saturday
     for MIZ047>049-053>055-060>063.

     Winter Storm Warning from 10 PM this evening to noon EST Saturday
     for MIZ068>070-075-076-082-083.

Lake Huron...NONE.
Lake St Clair...NONE.
Michigan waters of Lake Erie...Gale Watch from Saturday afternoon through
Sunday morning for LEZ444.

&&

AVIATION.....DG
DISCUSSION...KK
MARINE.......DG

You can obtain your latest National Weather Service forecasts online
at www.weather.gov/detroit.

Hazardous Weather Outlook
National Weather Service Detroit/Pontiac MI
340 PM EST Thu Jan 16 2020

MIZ047-048-053-054-060>062-068>070-075-076-082-083-172045-
Midland-Bay-Saginaw-Tuscola-Shiawassee-Genesee-Lapeer-Livingston-
Oakland-Macomb-Washtenaw-Wayne-Lenawee-Monroe-
340 PM EST Thu Jan 16 2020

This hazardous weather outlook is for portions of southeast
Michigan.

.DAY ONE...This Afternoon and Tonight

No hazardous weather is expected at this time.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday

A winter storm watch is in effect. Please see the latest winter
weather message for more detail.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will not be needed today and tonight.

MIZ049-055-063-172045-
Huron-Sanilac-St. Clair-
340 PM EST Thu Jan 16 2020

This hazardous weather outlook is for portions of southeast
Michigan.

.DAY ONE...This Afternoon and Tonight

A Lakeshore Flood Advisory is in effect. See the latest lakeshore
hazard message for details.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday

A winter storm watch is in effect. Please see the latest winter
weather message for more detail.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will not be needed today and tonight.

LCZ460-LEZ444-LHZ361>363-421-422-441>443-462>464-172045-
Lake St Clair-
Michigan Waters of Lake Erie from Detroit River to North Cape MI-
Lake Huron from 5NM east of Mackinac Bridge to Presque Isle Lt
beyond 5 NM off shore-
Lake Huron from Presque Isle Light to Sturgeon Point MI beyond 5NM
off shore-
Lake Huron from Sturgeon Point to Alabaster MI beyond 5NM off shore-
Outer Saginaw Bay SW of Alabaster to Port Austin MI to Inner Saginaw
Bay-Inner Saginaw Bay SW of Point Au Gres to Bay Port MI-
Port Austin to Harbor Beach MI-Harbor Beach to Port Sanilac MI-
Port Sanilac to Port Huron MI-
Lake Huron from Port Austin to Harbor Beach beyond 5NM Off Shore-
Lake Huron from Harbor Beach to Port Sanilac beyond 5NM Off Shore-
Lake Huron from Port Sanilac to Port Huron beyond 5NM Off Shore-
340 PM EST Thu Jan 16 2020

This hazardous weather outlook is for portions of Lake Erie, Lake
Huron and Lake St Clair.

.DAY ONE...This Afternoon and Tonight

Small craft advisories are in effect. See the forecast for detail.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday

No hazardous weather is expected at this time.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will not be needed today and tonight.

You can obtain your latest National Weather Service forecasts online
at www.weather.gov/detroit.