Friday, August18, 2017 L-36.com


Marine Weather and Tides
Munising, MI

Version 3.4
What's New / NOTES
6/25/2017 - NOAA is having a major issue that impact the 7 day forecast load times. Many users are reporting problems. The issue has been reported.
5/23/2017 - Worked with NOAA again to speed up the 7 day forecast load times. Thanks to them for being responsive.
5/19/2016 - There were issues with the 3 day airport observation history. I switched to another data source. Let me know if you see any issues with the data feeds.

Sunrise 6:51AMSunset 8:54PM Friday August 18, 2017 2:57 AM EDT (06:57 UTC) Moonrise 2:12AMMoonset 5:39PM Illumination 17% Phase: Waning Crescent; Moon at 26 days in cycle
NOTE: Some of the data on this page has not been verified and should be used with that in mind. It may and occasionally will, be wrong. The tide reports are by xtide and are NOT FOR NAVIGATION.
Marine Forecasts
    EDIT      (on/off)   Help
This is a Weather Statement Zone, please check the Date to see if it has expired
LSZ249 749 Pm Edt Wed Aug 9 2017
.strong Thunderstorms over the waters... The areas affected include... 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... Marquette to munising mi... Munising to grand marais mi... At 748 pm edt...doppler radar indicated strong Thunderstorms... Capable of producing winds to around 30 knots and small hail. These Thunderstorms were located along a line extending from 12 nm north of granite island to 18 nm north of grand island to near miners castle...moving east at 25 knots. Precautionary/preparedness actions... Mariners can expect gusty winds to around 30 knots...small hail... Locally higher waves...and lightning strikes. Boaters should seek safe harbor immediately until these storms pass. && lat...lon 4662 8619 4653 8642 4642 8657 4639 8666 4668 8704 4671 8731 4699 8738 4715 8644 4664 8598
This is a Weather Statement Zone, please check the Date to see if it has expired
LSZ249 Expires:201708100045;;136191 FZUS73 KMQT 092349 MWSMQT MARINE WEATHER STATEMENT NATIONAL WEATHER SERVICE MARQUETTE MI 749 PM EDT WED AUG 9 2017 LSZ249-250-266-100045-

7 Day Forecast for Marine Location Near Munising, MI
   Hourly   EDIT   Help
location: 46.38, -86.71     debug


Area Discussion for - Marquette, MI
      (on/off)   Help   NOTE: mouseover dotted underlined text for definition
Fxus63 kmqt 180519
afdmqt
area forecast discussion
national weather service marquette mi
119 am edt Fri aug 18 2017

Short term (this evening through Friday)
issued at 332 pm edt Thu aug 17 2017
latest 19z WV imagery and rap analysis indicated a vigorous
mid upper level low over far NW wi fast approaching western upper
mi. Radar imagery shows increasing shower coverage as forcing
ahead of the mid-upper low combines with MLCAPE values 500-1000
j kg highest over menominee county. Instability has also led to
a few isolated t-storms.

Into this evening, radar trends and short range high res models
suggest showers continuing into the evening hours along
with some isolated t-storms into early evening. The main threat
will be for heavy rainfall of several inches with any stronger
slow moving shra tsra clusters as pwat values climb into the
1.50-2.00 inch range. Even though effective shear will be weak
(generally 25 knots or less), with the strong vorticity center
moving into the area combined with modest instability there may
be a slight potential for a brief weak funnel tornado similar to
what occurred over SRN mn yesterday afternoon and evening.

Tonight, as the mid level low lifts to the northeast, the heavier
shra tsra will diminish by late evening. Additional lighter wrap-
around rain drizzle will develop over the northwest half especially
where upslope nnw flow lift is strongest.

Friday, some isolated showers could linger into the morning hours
especially for NW upslope locations but then as low continues to
lift NE expect drying and partial clearing from the west in the
afternoon. NW winds will remain fairly gusty through much of the
day especially north central and east where gusts of 25-30 mph can
be expected. These blustery winds will lead to large waves and a high
swim risk for the lake superior beaches of marquette and alger
counties on fri. However, it won't be a day to go to the beach due
to clouds shra and temps struggling to get out of the lower 60s over
the N central and NE fcst area where shra cloud cover will be most
persistent. Farther west and for downsloping locations south central
in NW flow, high temps Fri could reach into the lower 70s with the
possibility of afternoon breaks in cloud cover.

Long term (Friday night through Thursday)
issued at 332 pm edt Thu aug 17 2017
Saturday and Sunday: as the upper-level trough and surface low
continue to shift eastward, weak upper level ridging and a suface
high pressure system are expected to build across the upper great
lakes region for Saturday into Sunday morning. This will allow winds
to diminish across the area and allow skies to become clear to
partly cloudy through Sunday morning. There may be a few afternoon
showers that develop over the eastern u.P. On any lake breezes that
develop; however, the coverage should remain isolated for the day
Saturday. Sunday afternoon a weak surface trough is expected to
slide in from the west, which will bring scattered showers and
thunderstorms from west to east across much of the u.P. Through the
evening hours. Sunday afternoon will be very warm ahead of the
surface trough with many locations warming into the mid 80s.

Monday into Tuesday: the next area of broader troughing will shift
eastward toward the upper great lakes for this time period. As this
happens, a cold front is expected to shift into the area Monday
afternoon and then slowly shift eastward into Tuesday afternoon. As
moisture, forcing and instability increase along and ahead of the
front, expect showers, thunderstorms and cloud cover to increase
across the area Monday afternoon through Tuesday.

Rest of the extended: the front will be east of the area on
Wednesday allowing condtions to dry out a bit; however, the upper
level trough axis nearby along with the potential for a shortwave
passing through will allow for at least increased afternoon cloud
cover and possibly some diuranl afternoon rain showers. Temperatures
will be near normal for this time period. At this point, will stick
with a consensus of the models for this time period.

Aviation (for the 06z tafs through 06z Friday night)
issued at 119 am edt Fri aug 18 2017
upslope, moist flow on the back side of a surface low pressure
system currently near ksaw will promote low cigs, rain and reduced
vis at all sites into Friday morning. Gradual improvement from W to
e will be noted on Fri as the low exits the region.

Marine (for the 4 pm lake superior forecast issuance)
issued at 332 pm edt Thu aug 17 2017
easterly winds could briefly gust to low end gales to 35 knots over
far eastern lake superior into late this afternoon. The winds will
become NW on Friday as the low departs to the east, with 20-30 knots
expected for the east half. Lighter winds, mostly under 20 knots,
are expected over the weekend into early next week with high
pressure over the region.

Mqt watches warnings advisories
Upper michigan...

none.

Lake superior...

none.

Lake michigan...

none.

Short term... Voss
long term... Kec
aviation... Titus
marine... Voss


Weather Reporting Stations
   EDIT       (on/off)   Help   NOTE: Click on distance to see the station location on a map
Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
KP53 4 mi61 min NW 12 G 22 64°F 999.6 hPa64°F
45173 15 mi27 min NNW 19 56°F 63°F2 ft999.4 hPa
MCGM4 - 9099018 - Marquette C.G., MI 37 mi39 min WNW 2.9 G 7 62°F 999.5 hPa59°F
GR4 - Grand Marais, MI 44 mi77 min E 7 G 7 64°F 1000.7 hPa
GRIM4 44 mi17 min WNW 22 G 25 61°F 999.9 hPa60°F
45171 44 mi27 min WNW 21 57°F 63°F3 ft1000.4 hPa
FPTM4 - Fairport, MI 53 mi55 min W 13 G 15 68°F 1000 hPa

Wind History for Marquette C.G., MI
(wind in knots)    EDIT      (on/off)   Help
3
AM
4
AM
5
AM
6
AM
7
AM
8
AM
9
AM
10
AM
11
AM
12
PM
1
PM
2
PM
3
PM
4
PM
5
PM
6
PM
7
PM
8
PM
9
PM
10
PM
11
PM
12
AM
1
AM
2
AM
Last
24hr
--
N1
--
S2
SW1
S2
SE6
SE7
SE6
G9
S6
SE5
S7
S17
S9
G16
SE9
S3
G6
SE5
SE5
SE5
NW2
N2
N2
NW2
NW4
G7
1 day
ago
W1
W1
W1
SW3
W1
W1
--
S4
SE7
E7
E4
E5
E8
E10
E7
G11
E11
E3
G7
N1
--
NW1
NW1
--
N1
SW1
2 days
ago
W3
NW1
G4
W2
G5
NW2
G5
NW1
G6
NW3
G8
N5
G13
N4
G8
N4
G10
NW5
G11
N8
G12
N6
G11
N3
G6
N2
G5
NW1
N3
NW2
--
NW2
NW1
NW1
--

Airport Reports
    EDIT      (on/off)   Help   Click EDIT to display multiple airports
AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Munising - Munising Lakeshore Observation, MI4 mi61 minNW 12 G 22 mi64°F64°F100%999.6 hPa

Wind History from P53 (wind in knots)
3
AM
4
AM
5
AM
6
AM
7
AM
8
AM
9
AM
10
AM
11
AM
12
PM
1
PM
2
PM
3
PM
4
PM
5
PM
6
PM
7
PM
8
PM
9
PM
10
PM
11
PM
12
AM
1
AM
2
AM
Last 24hrS7S7SE9
G17
SE10SE10
G21
SE8
G18
SE7SE8SE8SE9
G15
SE8S9
G17
S7SE7S8S5SE7S4W4S3CalmCalmNW12NW12
G22
1 day agoS6S6S5S7S3S4S3CalmS3N5--NE10NE15NE13NE11NE9NE4CalmCalmS3S4S5SE8S9
G15
2 days agoCalmN4CalmS5S6CalmNW5NW7NW7NW7NW8NW6NW11NW10NW12NW10NW6NW8NW4CalmW3N3S3S6

Tide / Current Tables for
   EDIT   RT Ports Option   Weekend mode (on/off)   (on/off)   Help
Tide / Current Tables for
   EDIT      (on/off)   Help
Weather Map and Satellite Images
       (on/off)   Help
Weather Map
wmap_A
IR Satellite Image from GEOS
east_satellite

GOES Local Image of GreatLakes    EDIT
Geos

Wind Forecast for Marquette, MI (2,6,7,8)
      (on/off)   Help

Ground Weather Radar Station Marquette, MI
   (on/off)   Help
weather_mapweather_map weather_map

Ad by Google

Disclaimer:
The information on this web site has not been checked for accuracy. It is for entertainment purposes only and should be independently verified before using for any other reason. There are five sources. 1) Documents and manuals from a variety of sources. These have not been checked for accuracy and in many cases have not even been read by anyone associated with L-36.com. I have no idea of they are useful or accurate, I leave that to the reader. 2) Articles others have written and submitted. If you have questions on these, please contact the author. 3) Articles that represent my personal opinions. These are intended to promote thought and for entertainment. These are not intended to be fact, they are my opinions. 4) Small programs that generate result presented on a web page. Like any computer program, these may and in some cases do have errors. Almost all of these also make simplifying assumptions so they are not totally accurate even if there are no errors. Please verify all results. 5) Weather information is from numerious of sources and is presented automatically. It is not checked for accuracy either by anyone at L-36.com or by the source which is typically the US Government. See the NOAA web site for their disclaimer. Finally, tide and current data on this site is from 2007 and 2008 data bases, which may contain even older data. Changes in harbors due to building or dredging change tides and currents and for that reason many of the locations presented are no longer supported by newer data bases. For example, there is very little tidal current data in newer data bases so current data is likely wrong to some extent. This data is NOT FOR NAVIGATION. See the XTide disclaimer for details. In addition, tide and current are influenced by storms, river flow, and other factors beyond the ability of any predictive program.