Wednesday, June19, 2019 L-36.com


Marine Weather and Tides
Chatham, MI

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6/2/2019. Many thanks to a user for reporting an error on one of the Edit pages. The switch to PHP 7.2 caused many pages that previously worked to quit working. I fixed many but I still depend on users to report ones I missed. Please report errors HERE or send an email to me at L-36.com. Allen

Sunrise 5:54AMSunset 9:47PM Wednesday June 19, 2019 1:30 PM EDT (17:30 UTC) Moonrise 10:45PMMoonset 6:55AM Illumination 95% Phase: Waning Gibbous; Moon at 17 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
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LSZ249 Expires:201905221400;;274510 Fzus73 Kmqt 221227 Mwsmqt Marine Weather Statement National Weather Service Marquette Mi 827 Am Edt Wed May 22 2019 Lsz244-245-249>251-264>267-221400- 827 Am Edt Wed May 22 2019
.a front over the waters... The areas affected include... Eagle river to manitou island mi... Grand marais to whitefish point mi... 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 west of line from manitou island to marquette mi beyond 5nm from shore... Lake superior from grand marais mi to whitefish point mi 5nm off shore to the us/canadian border... Lake superior from upper entrance to portage canal to manitou island mi 5nm off shore to the us/canadian border... Manitou island to point isabelle mi... Marquette to munising mi... Munising to grand marais mi... At 827 am edt, doppler radar indicated a front, capable of producing winds to around 30 knots. This front was located along a line extending from near bete grise to near miners castle, moving north at 40 knots. Precautionary/preparedness actions... Mariners can expect gusty winds to around 30 knots, locally higher waves, and lightning strikes. Boaters should seek safe harbor immediately until these storms pass. && lat...lon 4663 8585 4663 8615 4653 8642 4642 8658 4732 8763 4796 8755 4685 8485
LSZ249


7 Day Forecast for Marine Location Near Chatham, MI
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location: 46.43, -86.84     debug


Area Discussion for - Marquette, MI
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Fxus63 kmqt 191714
afdmqt
area forecast discussion
national weather service marquette mi
114 pm edt Wed jun 19 2019

Short term (today and tonight)
issued at 316 am edt Wed jun 19 2019
short wave evident in WV satellite over nd and northern mn this
morning but it is not producing any precip and only expected to
shear out further as it moves into more confluent flow downstream.

Subtle surface pressure rises behind this wave and through the
day today will eventually lead to clearing skies but the question
is just how quickly. Right now have clearing west to east after
about 13z, with clouds lingering into the afternoon near lake
michigan and over the south central as they will be the last to
feel the effects of subsidence aloft. As long as the clouds aren't
unexpectedly stubborn, should see fairly deep mixing this
afternoon up to about 850 mb, and thus highs in the low 70s away
from lake superior. Could get a bit breezy this afternoon too as
we tap in to some 15-20 knot wind above 900 mb. Though NE flow
like this is not a classic "watch out" fire wx pattern, the
efficient afternoon mixing combined with aforementioned wind gusts
could lead to fire wx concerns should dew points mix out more
than currently forecast.

With surface high pressure over hudson bay continuing to extend a
surface ridge southwestward across lake superior and upper
michigan, tonight looks like a chilly one by june standards. Have
brought lows down into the mid to upper 30s across the interior
west, which could then support patchy frost. Over the east, think
there will be enough onshore flow to keep lows above 40. Hopefully
the drier dew points during the day will limit fog development
tonight, but for the eastern u.P., mainly alger county and east,
could see scattered low clouds redevelop tonight as the marine
layer pushes back onshore.

Long term (Thursday through Tuesday)
issued at 502 am edt Wed jun 19 2019
models suggest that the omega blocking pattern over canada will
gradually shift eastward as a trough develops over the WRN conus
with a slow progression into the north central conus. By the middle
of next week, mainly zonal to wnw flow is expected through the nrn
conus. Dry weather will eventually give way to increasing shra tsra
chances this weekend along with warmer and more humid conditions.

Thursday, confluent mid upper level flow with hudson bay sfc ridging
into the northern great lakes will maintain dry conditions.

Anticyclonic north to northeast flow will keep temps lower near lake
superior with highs only in the 50s to lower 60s while inland temps
climb into the lower to mid 70s.

Friday, with the continued models trend toward a slow progression
and more persistent blocking, expect only minimal rain chances into
the west half, mainly late as WAA and moisture edges toward the
region. The low level dry air dominating the rest of upper michigan
will limit any pcpn chances farther east.

Sat-sun, models remained in reasonable agreement that as a strong
shortwave trough and associated sfc low lift toward southern
manitoba, strengthening WAA and moisture advection will support
increasing pcpn chances from late Sat into sun. Shrtwvs lifting out
of the plains will also likely enhance pcpn chances. Instability
should also be high enough for some tsra. However, the higher
instability is expected to remain south of upper michigan. Some
areas of heavier rain will also be possible as pwat values climb at
or above 1.5 inches.

Mon, models ensembles suggest that another stronger shrtwv and
associated sfc low may lift from the central plains toward the
western great lakes. Although the this feature may bring the
potential for some heavier more widespread rain, most ensemble
members and recent gfs ECMWF runs have kept the impacts from the
shrtwv southeast of upper michigan.

Tue, drier air is expected to move into northern great lakes. Lower
end pops remain with the potential for weak shortwaves along with
daytime to support some sct showers.

Aviation (for the 18z tafs through 18z Thursday afternoon)
issued at 113 pm edt Wed jun 19 2019
vfr conditions are expected to prevail at all three sites through
the forecast period. With high pressure building in, winds will
remain light as well. There is a small chance for marine fog low
stratus to push inland to kiwd overnight tonight, however at this
time confidence is high enough that this will not occur to leave it
out of the taf. On the off chance that fog does reach kiwd, it could
become dense late tonight.

Marine (for the 4 am lake superior forecast issuance)
issued at 352 am edt Wed jun 19 2019
with a high pressure ridge slowly passing across lake superior the
next several days, winds are expected to be 15 knots or less until
Saturday, when a few 15 to 20 knot gusts will be possible on eastern
lake superior ahead of the next low pressure system. Could also be
some marine fog early this morning, mainly on the western arm, and
then again tonight, though so far it appears there has only been low
stratus and not much fog, so confidence in fog development is low.

Mqt watches warnings advisories
Upper michigan...

none.

Lake superior...

none.

Lake michigan...

none.

Short term... Rjc
long term... Jlb
aviation... Kcw
marine... Rjc


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
KP53 10 mi35 min NE 5.1 53°F 1011.9 hPa47°F
MCGM4 - 9099018 - Marquette C.G., MI 30 mi43 min N 4.1 G 7 52°F 1011.9 hPa45°F
GRIM4 36 mi21 min NNW 2.9 G 5.1 49°F 1012.5 hPa47°F
GR4 - Grand Marais, MI 49 mi51 min 46°F 1012.5 hPa
BIGM4 - Big Bay, MI 54 mi51 min NNE 8.9 G 12 57°F 1011.5 hPa

Wind History for Marquette C.G., MI
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Munising - Munising Lakeshore Observation, MI10 mi35 minNE 5 mi53°F46°F80%1011.9 hPa

Wind History from P53 (wind in knots)
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Last 24hr3E3NW11N7E6N8N6N6N5NW5NW4N6NW7NW6NW8N6N7N6N8N9N8N9NE7NE5
1 day agoNE6N6N5N3NE7NE4CalmCalmCalmCalmS4S5S6S4SW6S7S7N9CalmCalmNE4NE3CalmNE7
2 days agoNE11NE10N9N9NE6NE10NE9N7NE3CalmS4S4S5S5S3S5S5S3CalmNE3N3CalmN5N7

Tide / Current Tables for
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Tide / Current Tables for
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Weather Map and Satellite Images
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GOES Local Image of    EDIT
NOTE: East coast views moved to GEOS-16. They are experimental and not well supported by NOAA so they may not be correct so be warned. This change required redoing a large amount of the GOES code. If the image you are expecting is not showing, please let me know. You may need to use the EDIT function to update your location.
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Wind Forecast for Marquette, MI (13,3,4,5)
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Ground Weather Radar Station Marquette, MI
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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.