Small Craft Advisory 36, NWS Marquette, MI

319 
WHUS73 KMQT 200207
MWWMQT

URGENT - MARINE WEATHER MESSAGE
National Weather Service Marquette MI
1007 PM EDT Mon Apr 19 2021

LSZ249-250-201015-
/O.CON.KMQT.GL.W.0015.000000T0000Z-210420T0300Z/
/O.CON.KMQT.SC.Y.0035.210420T0300Z-210421T0200Z/
Marquette to Munising MI-Munising to Grand Marais MI-
1007 PM EDT Mon Apr 19 2021

...GALE WARNING REMAINS IN EFFECT UNTIL 11 PM EDT THIS EVENING...
...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 10 PM EDT
TUESDAY...

* WHAT...For the Gale Warning, northwest winds 25 to 30 kt with 
  gusts up to 35 kt and waves 10 to 15 ft occurring. For the 
  Small Craft Advisory, northwest winds 15 to 25 kt with gusts 
  up to 30 kt and waves 9 to 14 ft expected.

* WHERE...Marquette to Munising MI and Munising to Grand Marais 
  MI.

* WHEN...For the Gale Warning, until 11 PM EDT this evening. For 
  the Small Craft Advisory, until 10 PM EDT Tuesday.

* 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.

&&

$$

LSZ251-201015-
/O.CON.KMQT.GL.W.0015.000000T0000Z-210420T0300Z/
/O.CON.KMQT.SC.Y.0035.210420T0300Z-210421T0200Z/
Grand Marais to Whitefish Point MI-
1007 PM EDT Mon Apr 19 2021

...GALE WARNING REMAINS IN EFFECT UNTIL 11 PM EDT THIS EVENING...
...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 10 PM EDT
TUESDAY...

* WHAT...For the Gale Warning, northwest winds around 30 kt with 
  gusts up to 35 kt and waves 10 to 14 ft occurring. For the 
  Small Craft Advisory, northwest winds 20 to 30 kt with gusts 
  up to 35 kt and waves 8 to 13 ft expected.

* WHERE...Grand Marais to Whitefish Point MI.

* WHEN...For the Gale Warning, until 11 PM EDT this evening. For 
  the Small Craft Advisory, until 10 PM EDT Tuesday.

* 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.

&&

$$

LSZ266-200315-
/O.CON.KMQT.GL.W.0015.000000T0000Z-210420T0300Z/
Lake Superior East of a line from Manitou Island to Marquette MI
and West of a line from Grand Marais MI to the US/Canadian Border
Beyond 5NM from shore-
1007 PM EDT Mon Apr 19 2021

...GALE WARNING REMAINS IN EFFECT UNTIL 11 PM EDT THIS EVENING...

* WHAT...North winds 25 to 30 kt with gusts up to 35 kt and 
  waves 11 to 14 ft occurring.

* WHERE...Lake Superior East of a line from Manitou Island to 
  Marquette MI and West of a line from Grand Marais MI to the 
  US/Canadian Border Beyond 5NM from shore.

* WHEN...Until 11 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.

&&

$$

LSZ267-200315-
/O.CON.KMQT.GL.W.0015.000000T0000Z-210420T0300Z/
Lake Superior from Grand Marais MI to Whitefish Point MI 5NM off
shore to the US/Canadian border-
1007 PM EDT Mon Apr 19 2021

...GALE WARNING REMAINS IN EFFECT UNTIL 11 PM EDT THIS EVENING...

* WHAT...Northwest winds around 30 kt with gusts up to 35 kt and 
  waves 12 to 14 ft occurring.

* WHERE...Lake Superior from Grand Marais MI to Whitefish Point 
  MI 5NM off shore to the US/Canadian border.

* WHEN...Until 11 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.

&&

$$

LSZ244-245-201015-
/O.CON.KMQT.SC.Y.0035.000000T0000Z-210420T1800Z/
Eagle River to Manitou Island MI-
Manitou Island to Point Isabelle MI-
1007 PM EDT Mon Apr 19 2021

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 2 PM EDT
TUESDAY...

* WHAT...North winds 15 to 25 kt with gusts up to 30 kt and 
  waves 7 to 10 ft occurring.

* WHERE...Eagle River to Manitou Island MI and Manitou Island to 
  Point Isabelle MI.

* WHEN...Until 2 PM EDT Tuesday.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

LSZ248-201015-
/O.CON.KMQT.SC.Y.0036.000000T0000Z-210420T2000Z/
Huron Islands to Marquette MI-
1007 PM EDT Mon Apr 19 2021

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 4 PM EDT
TUESDAY...

* WHAT...North winds 15 to 25 kt with gusts up to 30 kt and 
  waves 6 to 9 ft occurring.

* WHERE...Huron Islands to Marquette MI.

* WHEN...Until 4 PM EDT Tuesday.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

LMZ221-200600-
/O.CON.KMQT.SC.Y.0035.000000T0000Z-210420T0600Z/
Green Bay North of line from Cedar River MI to Rock Island
Passage-
1007 PM EDT Mon Apr 19 2021

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 2 AM EDT
TUESDAY...

* WHAT...Northwest winds 10 to 20 kt with gusts up to 25 kt 
  occurring.

* WHERE...Green Bay North of line from Cedar River MI to Rock 
  Island Passage.

* WHEN...Until 2 AM EDT Tuesday.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

LMZ248-250-200600-
/O.CON.KMQT.SC.Y.0035.000000T0000Z-210420T0600Z/
Seul Choix Point to Point Detour MI-
5NM East of a line from Fairport MI to Rock Island Passage-
1007 PM EDT Mon Apr 19 2021

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 2 AM EDT
TUESDAY...

* WHAT...Northwest winds 15 to 20 kt with gusts up to 30 kt 
  occurring.

* WHERE...5NM East of a line from Fairport MI to Rock Island 
  Passage and Seul Choix Point to Point Detour MI.

* WHEN...Until 2 AM EDT Tuesday.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

LSZ241-242-201015-
/O.CON.KMQT.SC.Y.0035.000000T0000Z-210420T1200Z/
Black River to Ontonagon MI-
Ontonagon to Upper Entrance of Portage Canal MI-
1007 PM EDT Mon Apr 19 2021 /907 PM CDT Mon Apr 19 2021/

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 8 AM EDT /7 AM
CDT/ TUESDAY...

* WHAT...North winds 10 to 15 kt and waves 3 to 5 ft occurring.

* WHERE...Ontonagon to Upper Entrance of Portage Canal MI and 
  Black River to Ontonagon MI.

* WHEN...Until 8 AM EDT /7 AM CDT/ Tuesday.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

LSZ243-201015-
/O.CON.KMQT.SC.Y.0035.000000T0000Z-210420T1600Z/
Upper Entrance of Portage Canal to Eagle River MI-
1007 PM EDT Mon Apr 19 2021

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL NOON EDT
TUESDAY...

* WHAT...North winds 10 to 20 kt with gusts up to 25 kt and 
  waves 4 to 6 ft occurring.

* WHERE...Upper Entrance of Portage Canal to Eagle River MI.

* WHEN...Until noon EDT Tuesday.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

LSZ246-247-200315-
/O.CON.KMQT.SC.Y.0035.000000T0000Z-210420T0300Z/
Point Isabelle to Lower Entrance of Portage Canal MI-
Lower Entrance of Portage Canal To Huron Islands MI Including
Keweenaw and Huron Bays-
1007 PM EDT Mon Apr 19 2021

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 11 PM EDT THIS
EVENING...

* WHERE...Lower Entrance of Portage Canal To Huron Islands MI 
  Including Keweenaw and Huron Bays and Point Isabelle to Lower 
  Entrance of Portage Canal MI.

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

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

JSS

929 
WHUS73 KMQT 200841
MWWMQT

URGENT - MARINE WEATHER MESSAGE
National Weather Service Marquette MI
441 AM EDT Tue Apr 20 2021

LSZ244-245-201645-
/O.CON.KMQT.SC.Y.0035.000000T0000Z-210420T1800Z/
Eagle River to Manitou Island MI-
Manitou Island to Point Isabelle MI-
441 AM EDT Tue Apr 20 2021

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 2 PM EDT THIS
AFTERNOON...

* WHAT...North winds 15 to 20 kt with gusts up to 25 kt and 
  waves 4 to 7 ft occurring.

* WHERE...Manitou Island to Point Isabelle MI and Eagle River to 
  Manitou Island MI.

* WHEN...Until 2 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.

&&

$$

LSZ248-201645-
/O.CON.KMQT.SC.Y.0036.000000T0000Z-210420T2000Z/
Huron Islands to Marquette MI-
441 AM EDT Tue Apr 20 2021

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 4 PM EDT THIS
AFTERNOON...

* WHAT...North winds 10 to 20 kt with gusts up to 25 kt and 
  waves 4 to 7 ft occurring.

* WHERE...Huron Islands to Marquette MI.

* WHEN...Until 4 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.

&&

$$

LSZ249>251-201645-
/O.CON.KMQT.SC.Y.0035.000000T0000Z-210421T0200Z/
Marquette to Munising MI-Munising to Grand Marais MI-
Grand Marais to Whitefish Point MI-
441 AM EDT Tue Apr 20 2021

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 10 PM EDT THIS
EVENING...

* WHAT...Northwest winds 15 to 25 kt with gusts up to 30 kt and 
  waves 7 to 10 ft occurring.

* WHERE...Marquette to Munising MI, Munising to Grand Marais MI 
  and Grand Marais to Whitefish Point MI.

* WHEN...Until 10 PM EDT this evening.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

LSZ241-242-201200-
/O.CON.KMQT.SC.Y.0035.000000T0000Z-210420T1200Z/
Black River to Ontonagon MI-
Ontonagon to Upper Entrance of Portage Canal MI-
441 AM EDT Tue Apr 20 2021 /341 AM CDT Tue Apr 20 2021/

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 8 AM EDT /7 AM
CDT/ THIS MORNING...

* WHAT...North winds 10 to 15 kt and waves 3 to 5 ft occurring.

* WHERE...Ontonagon to Upper Entrance of Portage Canal MI and 
  Black River to Ontonagon MI.

* WHEN...Until 8 AM EDT /7 AM CDT/ this morning.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

LSZ243-201600-
/O.CON.KMQT.SC.Y.0035.000000T0000Z-210420T1600Z/
Upper Entrance of Portage Canal to Eagle River MI-
441 AM EDT Tue Apr 20 2021

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL NOON EDT TODAY...

* WHAT...North winds 10 to 20 kt and waves 4 to 6 ft occurring.

* WHERE...Upper Entrance of Portage Canal to Eagle River MI.

* WHEN...Until noon EDT today.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

BW

304 
WHUS73 KMQT 201434
MWWMQT

URGENT - MARINE WEATHER MESSAGE
National Weather Service Marquette MI
1034 AM EDT Tue Apr 20 2021

LSZ244-245-201800-
/O.CON.KMQT.SC.Y.0035.000000T0000Z-210420T1800Z/
Eagle River to Manitou Island MI-
Manitou Island to Point Isabelle MI-
1034 AM EDT Tue Apr 20 2021

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 2 PM EDT THIS
AFTERNOON...

* WHAT...North winds 15 to 20 kt with gusts up to 30 kt and 
  waves 3 to 6 ft occurring.

* WHERE...Manitou Island to Point Isabelle MI and Eagle River to 
  Manitou Island MI.

* WHEN...Until 2 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.

&&

$$

LSZ248-202000-
/O.CON.KMQT.SC.Y.0036.000000T0000Z-210420T2000Z/
Huron Islands to Marquette MI-
1034 AM EDT Tue Apr 20 2021

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 4 PM EDT THIS
AFTERNOON...

* WHAT...North winds 10 to 20 kt with gusts up to 25 kt and 
  waves 3 to 6 ft occurring.

* WHERE...Huron Islands to Marquette MI.

* WHEN...Until 4 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.

&&

$$

LSZ249>251-202245-
/O.CON.KMQT.SC.Y.0035.000000T0000Z-210421T0200Z/
Marquette to Munising MI-Munising to Grand Marais MI-
Grand Marais to Whitefish Point MI-
1034 AM EDT Tue Apr 20 2021

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 10 PM EDT THIS
EVENING...

* WHAT...Northwest winds 10 to 20 kt with gusts up to 30 kt and 
  waves 5 to 8 ft occurring.

* WHERE...Marquette to Munising MI, Munising to Grand Marais MI 
  and Grand Marais to Whitefish Point MI.

* WHEN...Until 10 PM EDT this evening.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

LSZ243-201600-
/O.CON.KMQT.SC.Y.0035.000000T0000Z-210420T1600Z/
Upper Entrance of Portage Canal to Eagle River MI-
1034 AM EDT Tue Apr 20 2021

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL NOON EDT TODAY...

* WHAT...Waves 4 to 5 ft occurring.

* WHERE...Upper Entrance of Portage Canal to Eagle River MI.

* WHEN...Until noon EDT today.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

253 
WHUS73 KMQT 202018
MWWMQT

URGENT - MARINE WEATHER MESSAGE
National Weather Service Marquette MI
418 PM EDT Tue Apr 20 2021

LSZ248-202130-
/O.EXP.KMQT.SC.Y.0036.000000T0000Z-210420T2000Z/
Huron Islands to Marquette MI-
418 PM EDT Tue Apr 20 2021

...SMALL CRAFT ADVISORY HAS EXPIRED...

$$

LSZ249>251-210430-
/O.EXT.KMQT.SC.Y.0035.000000T0000Z-210421T0500Z/
Marquette to Munising MI-Munising to Grand Marais MI-
Grand Marais to Whitefish Point MI-
418 PM EDT Tue Apr 20 2021

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

* WHAT...Northwest winds 10 to 20 kt with gusts up to 25 kt and 
  waves 3 to 6 ft occurring.

* WHERE...Marquette to Munising MI, Munising to Grand Marais MI 
  and Grand Marais to Whitefish Point MI.

* WHEN...Until 1 AM 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.

&&

$$

JSS

Area Forecast Discussion
National Weather Service Marquette MI
429 PM EDT Mon Apr 19 2021

.SHORT TERM...(This evening through Tuesday)
Issued at 428 PM EDT MON APR 19 2021

Water vapor imagery and RAP analysis show that the shortwave trof
that was approaching the Upper Lakes 24hrs ago has deepened and
closed off a mid-level low centered over far northern Lake Superior.
Sfc low pres is located near Michipicoten Island and will be exiting
the lake shortly. On the backside of the low, narrow 850mb thermal
trof (-12C) is wrapping s across nw Upper MI. Sharply cyclonic low-
level flow within this thermal trof combined with deep moisture has
resulted in a recent increase in lake enhanced snow across nw Upper
MI. KMQT radar shows some of this enhanced shsn activity spreading
se into Marquette/Iron counties. Looks like a little instability
from limited daytime heating is assisting in expanding
-shsn/flurries even farther s and se.

As the 850mb thermal trof translates se over the next several hrs,
snow will increase into the eastern fcst area this evening. In that
area (Alger/Luce/northern Schoolcraft counties), expect snow
accumulations this evening around an inch, locally up to 2.
Conversely, shsn will diminish rather quickly over the w due to loss
of deeper moisture, higher April sun angle working to build a
deepening mixed layer upstream of the lake (hostile for LES), and
850mb temps moderating to around -10C, marginal for LES. Thus,
expect ongoing shsn to diminish rapidly to little more than
flurries, if even that, over the next several hrs. Overnight into
Tue morning, 850mb temps fall back a little to -11 to -14C, lowest
over the e half of Lake Superior. As a result, -shsn/flurries should
redevelop or expand some over the western fcst area. Nothing more
than a dusting expected. To the e, -shsn will continue, but with
deeper moisture exiting, the -shsn will be lighter than what occurs
during the evening hrs. May see another inch of snow overnight/Tue
morning. Lows tonight should range from the upper teens to mid 20s,
coldest interior w half.

Flurries/-shsn should end by Tue aftn. Should be quite a bit of
cloudiness around thru the day as daytime heating working on
moisture off the lake leads to increased stratocu development across
the entire fcst area. Expect high temps to range from the lwr 30s F
n and e to the lwr 40s s central.

.LONG TERM...(Tuesday night through Monday)
Issued at 303 PM EDT MON APR 19 2021

A blocking pattern will continue this week over the northern Pacific
with ridging extending from the western U.S though the Gulf of
Alaska and north to the Arctic Circle, with strong positive 500mb
height anomalies over AK. This will help maintain downstream
troughing and negative 500mb height anomalies over central and
northern Canada. Shortwave energy rotating around the trough will
keep an active pattern over the U.P through next weekend.
Temperatures will moderate as shortwave ridging takes hold on
Thursday into Friday, ahead of what looks like a bit stronger
shortwave trough. The shortwave and associated cold front look to
come through the region on Saturday bringing a quick shot of cooler
temperatures and precipitation. WPC fuzzy ensemble clusters are
locked in with the strong Pacific ridging continuing through early
next weekend. Ensembles clusters start to deviate thereafter and
there are some indications the western blocking ridge may start to
break down.

Deterministic models show a shortwave moving through the northern
Great Lakes Tuesday night with shortwave ridging building in
Thursday. Not expecting much in the way of precipitation with the
wave Tuesday night into Wednesday morning. 850mb temps cool a little
bit, down to -13F which will induce some lake instability however
the air is pretty dry with deep inverted v soundings.

Temperatures will moderate with the ridging on Thursday though this
ridge becomes flattened out by Friday as a weak shortwave passes to
the south of the area. Thursday and Friday will probably be the
warmest days in the extended. Models soundings show deep mixing on
Thursday and Friday with RH dropping to around 25% for the counties
along with wind gusts to around 20 mph, which could elevate fire
weather conditions.

The timing of the weekend system is still a bit uncertain. It is
possible we squeak out a day of temperatures in the 40s and 50s for
at least the central and east with the front arriving in the evening
hours. Over the west, models bring the front in by early afternoon.
Deterministic models still deviate on the timing and track of the
system, with the Canadian furthest south and most aggressive with
forcing and precipitation. The GFS keeps the strongest forcing north
of the area and the ECMWF keeps the wave weaker with an elongated
trough. NBM PoPs are pretty washed out likely due to the model
timing and track differences with chance PoPs over much of the area
Friday night through the day Saturday. It likely will be a much
shorter window for precipitation and expecting PoPs will go up and
the window will narrow with subsequent forecasts. Temperature
profiles look like they could be cold enough for snow, at least in
the west, with some slushy accumulations possible.
&&

.AVIATION...(For the 18Z TAFS through 18Z Tuesday afternoon)
Issued at 147 PM EDT MON APR 19 2021

As low pres departs to the e and drier air begins to move into the
area, expect improving conditions with shsn diminishing. Gusty NW
winds to 20-30kt will also subside. At KIWD, MVFR conditions will
prevail this aftn, though some brief periods of IFR vis are
possible. Cigs should lift to VFR this evening, but MVFR cigs may
return for a good portion of Tue morning. At KCMX, expect conditions
varying btwn IFR and LIFR this aftn. Expect improvement to MVFR late
aftn, then to VFR overnight. MVFR cigs may return for Tue morning.
At KSAW, MVFR cigs should prevail thru the fcst period. Flurries are
expected thru the aftn hrs.
&&

.MARINE...(For the 4 PM Lake Superior forecast issuance)
Issued at 428 PM EDT MON APR 19 2021

Ongoing nw gales across the e half of Lake Superior will diminish to
20-30kt by late evening as low pres heads for Quebec. Across western
Lake Superior, expect wind gusts generally in the 20-25kt range. On
Tue, winds will diminish to mostly under 15kt across western Lake
Superior and to 15-25kt across the e. Winds will generally be blo
20kt on Wed. W to sw winds will increase on Thu, strongest over
western Lake Superior where gusts to 25kt, perhaps to 30kt, should
occur. Winds may diminish slightly for Fri, but will increase again
late Sat (up to 30kt east) in the wake of a passing cold front.
&&

.MQT WATCHES/WARNINGS/ADVISORIES...
Upper Michigan...
  Lakeshore Flood Advisory until 5 PM EDT this afternoon for
     MIZ001.

  Lakeshore Flood Advisory until 2 AM EDT Tuesday for MIZ006-007.

Lake Superior...
  Gale Warning until 11 PM EDT this evening for LSZ249>251-266-267.

  Gale Warning until 8 PM EDT this evening for LSZ244-245-248-264-
     265.

Lake Michigan...
None.
&&

SHORT TERM...Rolfson
LONG TERM...NL
AVIATION...Rolfson
MARINE...Rolfson

Hazardous Weather Outlook
National Weather Service Marquette MI
349 PM EDT Mon Apr 19 2021

MIZ001>007-009>014-084-085-202000-
Keweenaw-Ontonagon-Northern Houghton-Baraga-Marquette-Alger-Luce-
Gogebic-Iron-Dickinson-Menominee-Delta-Southern Schoolcraft-
Southern Houghton-Northern Schoolcraft-
349 PM EDT Mon Apr 19 2021 /249 PM CDT Mon Apr 19 2021/

This Hazardous Weather Outlook is for portions of western Upper
Michigan and central Upper Michigan.

.DAY ONE...Tonight
Strong, northwest winds will result in large waves on Lake
Superior this evening. These waves may lead to lakeshore flooding
in Alger and Luce counties this evening. See the latest Lakeshore
Flood Advisory for additional details.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday

No hazardous weather is expected at this time.

.SPOTTER INFORMATION STATEMENT...

The need for weather spotter reports is not anticipated at this
time.

LSZ162-240>251-263>267-202000-
Lake Superior west of a line from Saxon Harbor WI to Grand
Portage MN beyond 5NM-Saxon Harbor WI to Black River MI-
Black River to Ontonagon MI-
Ontonagon to Upper Entrance of Portage Canal MI-
Upper Entrance of Portage Canal to Eagle River MI-
Eagle River to Manitou Island MI-
Manitou Island to Point Isabelle MI-
Point Isabelle to Lower Entrance of Portage Canal MI-
Lower Entrance of Portage Canal To Huron Islands MI Including
Keweenaw and Huron Bays-Huron Islands to Marquette MI-
Marquette to Munising MI-Munising to Grand Marais MI-
Grand Marais to Whitefish Point MI-
Lake Superior from Saxon Harbor WI to Upper Entrance to Portage
Canal MI 5NM off shore to the US/Canadian border including Isle
Royale National Park-
Lake Superior from Upper Entrance to Portage Canal to Manitou
Island MI 5NM off shore to the US/Canadian Border-
Lake Superior West of Line from Manitou Island to Marquette MI
Beyond 5NM from shore-
Lake Superior East of a line from Manitou Island to Marquette MI
and West of a line from Grand Marais MI to the US/Canadian Border
Beyond 5NM from shore-
Lake Superior from Grand Marais MI to Whitefish Point MI 5NM off
shore to the US/Canadian border-
349 PM EDT Mon Apr 19 2021 /249 PM CDT Mon Apr 19 2021/

This Hazardous Weather Outlook is for portions of Eastern Lake
Superior...Central Lake Superior and Western Lake Superior.

.DAY ONE...Tonight

Northwest gales of 35 to 40 knots are expected across eastern
Lake Superior through this evening. See the latest Marine Weather
Message and Open Lake Forecast for details.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday

No hazardous weather is expected at this time.

.SPOTTER INFORMATION STATEMENT...

The need for weather spotter reports is not anticipated at this
time.

LMZ221-248-250-202000-
Green Bay North of line from Cedar River MI to Rock Island
Passage-Seul Choix Point to Point Detour MI-
5NM East of a line from Fairport MI to Rock Island Passage-
349 PM EDT Mon Apr 19 2021

This Hazardous Weather Outlook is for portions of Northern Lake
Michigan.

.DAY ONE...Tonight

No hazardous weather is expected at this time.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday

No hazardous weather is expected at this time.

.SPOTTER INFORMATION STATEMENT...

The need for weather spotter reports is not anticipated at this
time.

NJL

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MARQUETTE MI
1041 AM EDT MON APR 19 2021

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0800 AM     SNOW             1 NE IRONWOOD           46.47N 90.14W
04/19/2021  M2.7 INCH        GOGEBIC            MI   CO-OP OBSERVER

            CO-OP OBSERVER STATION IWOM4 IRONWOOD.

&&

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MARQUETTE MI
126 PM EDT MON APR 19 2021

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

1113 AM     NON-TSTM WND GST STANNARD ROCK           47.18N 87.22W
04/19/2021  M59 MPH          LSZ266             MI   C-MAN STATION

            C-MAN STATION STDM4 STANNARD ROCK
            LIGHTHOUSE. PEAK WIND GUST OF 59 MPH ALSO
            RECORDED AT 1044 AM AND 927 AM EDT.

0738 AM     NON-TSTM WND GST COPPER HARBOR           47.47N 87.88W
04/19/2021  M56 MPH          KEWEENAW           MI   ASOS

            ASOS STATION KP59 COPPER HARBOR.

0324 AM     NON-TSTM WND GST 2 NW ROCK HARBOR LIGHTH 48.11N 88.61W
04/19/2021  M51 MPH          KEWEENAW           MI   MESONET

            MESONET STATION OJIM4 OJIBWAY - ISLE ROYALE.

0903 AM     NON-TSTM WND GST 3 W ROCK OF AGES        47.87N 89.31W
04/19/2021  M51 MPH          LSZ263             MI   C-MAN STATION

            C-MAN STATION ROAM4 ROCK OF AGES LIGHTHOUSE.

0930 AM     NON-TSTM WND GST PASSAGE ISLAND          48.22N 88.37W
04/19/2021  M45 MPH          LSZ264             MI   C-MAN STATION

            C-MAN STATION PILM4 PASSAGE ISLAND
            LIGHTHOUSE.

0552 AM     NON-TSTM WND GST HOUGHTON CO AIRPORT     47.17N 88.48W
04/19/2021  M44 MPH          HOUGHTON           MI   ASOS

            ASOS STATION KCMX HOUGHTON CO. AIRPORT.

0938 AM     NON-TSTM WND GST 1 NW KINGSFORD          45.82N 88.12W
04/19/2021  M41 MPH          DICKINSON          MI   ASOS

            ASOS STATION KIMT KINGSFORD.

&&

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MARQUETTE MI
342 PM EDT MON APR 19 2021

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0329 PM     SNOW             1 W IRONWOOD            46.46N 90.16W
04/19/2021  M2.4 INCH        GOGEBIC            MI   PUBLIC

            SNOWFALL SINCE 9:00 P.M. LAST NIGHT. STILL
            SNOWING AT THIS REPORT.

&&

JSS

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MARQUETTE MI
426 PM EDT MON APR 19 2021

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

1201 PM     NON-TSTM WND GST MUNISING                46.41N 86.65W
04/19/2021  M43 MPH          ALGER              MI   ASOS

            ASOS STATION KP53 MUNISING.

&&

JSS