Tuesday, August22, 2017 L-36.com


Marine Weather and Tides
Lansing, 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 6:52AMSunset 8:29PM Tuesday August 22, 2017 8:49 PM EDT (00:49 UTC) Moonrise 6:44AMMoonset 8:12PM Illumination 1% Phase: New Moon; Moon at 1 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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This is a Weather Statement Zone, please check the Date to see if it has expired
LCZ423 /o.exp.kdtx.ma.w.0044.000000t0000z-170811t2045z/ 442 Pm Edt Fri Aug 11 2017
.the special marine warning will expire at 445 pm edt... The affected areas were... Detroit river... The Thunderstorm has moved out of the area and no longer poses a significant threat to boaters. Lat...lon 4205 8323 4206 8323 4219 8319 4222 8313 4217 8313 4212 8312 4205 8315 4201 8314 4201 8315 time...mot...loc 2042z 269deg 38kt 4210 8301
This is a Weather Statement Zone, please check the Date to see if it has expired
LCZ423 Expires:201708112052;;233222 FZUS73 KDTX 112042 RRA MWSDTX MARINE WEATHER STATEMENT NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI 442 PM EDT FRI AUG 11 2017 LCZ423-112052-

7 Day Forecast for Marine Location Near Lansing, MI
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location: 42.71, -84.56     debug


Area Discussion for - Grand Rapids, MI
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Fxus63 kgrr 222344
afdgrr
area forecast discussion
national weather service grand rapids mi
744 pm edt Tue aug 22 2017
latest update...

aviation

Synopsis
Issued at 315 pm edt Tue aug 22 2017
an unseasonably strong cold front has moved through southwest
michigan early this afternoon. The air is cold enough that it is
kept our air temperatures from rising significantly this
afternoon. Several additional pushes of colder air from central
canada will move into michigan over the next few days keeping
temperatures around 10 degrees below normal into the weekend. On
Thursday as the coldest air moves into the area, we could see
showers on the cold front. With the air so cold and lake michigan
being so warm, we could even see a few lake enhanced light rains
showers Thursday. Canadian polar air will be brought in behind
that front and the surface high that follows will take until
Monday to get east of the area when a slight warm up will begin.

Short term (this evening through Thursday night)
issued at 315 pm edt Tue aug 22 2017
little question the next few days will be much cooler than both
what is normal for this time of year and what we have had over the
past week or so. The only real question is will the air be cold
enough and moist enough for lake enhanced rain showers. As it
turns out it will be on Thursday so we continued to add showers to
our zone and grids.

The core of the polar jet will be over central lower michigan
Wednesday, so areas over our northern CWA just may see a few
sprinkles (not actually in our forecast). On Thursday a decent
shortwave dives into the eastern CONUS trough and that pushes the
polar jet core south of michigan. It also brings 850 temps to near
5c, which is 15c colder than the mean lake michigan surface
temperature. There is just enough moisture between the surface and
700 mb to allow lake enhanced showers. Inland the air is unstable
enough being on the cyclonic side of the polar jet for showers
there too. Any showers would be light. A few cold air funnels are
also possible. Largely for the same reason.

The passage of the secondary cold front has a line of showers with
it but that should gone by 5 to 6 pm so I believe skies should
become mostly clear tonight. Temperatures should fall into the
upper 40s north and lower to mid 50s south. Thursday night should
be the coldest with clear skies and light winds, I could see
locations like leota having lows in the mid to upper 30s.

Elsewhere this is likely to be coldest night with almost all
inland locations having lows in the 40s. The last time grr had a
low below 50 was on the 2nd of june (46).

Bottom line... Pre-fall like weather for a few days.

Long term (Friday through Tuesday)
issued at 315 pm edt Tue aug 22 2017
mid level ridging will dominate the weather across the region
through most of the period. As a result... Expect dry conditions
with below normal temperatures. Surface high pressure will bring
fall like temperatures Friday morning through Saturday
morning... With a slow but steady warm up from Saturday through
Tuesday as the high moves to the east and southerly winds redevelop.

The tropical system expected to develop over the western gulf of
mexico in the next few days could impact the local weather Monday
onward... But uncertainty is high as the longer range models are
handling the remains of this system differently. Widespread rainfall
could be in store for west michigan in the latter part of next week.

Aviation (for the 00z tafs through 00z Wednesday evening)
issued at 745 pm edt Tue aug 22 2017
vfr weather is expected tonight and Wednesday with mainly clr
skies tonight and a scattered to broken high-based cumulus deck
Wednesday afternoon around 5-6k ft. Gusty northwest winds will
diminish with sunset but pick up again by late morning Wednesday.

Marine
Issued at 315 pm edt Tue aug 22 2017
i will keep all headlines as is but will add water spouts to our
forecast on Thursday since since the air is unstable enough.

Hydrology
Issued at 1240 pm edt Tue aug 22 2017
area rivers are around normal levels for the time of the year and
well below bankfull. Rainfall over the past 24 hours has mostly been
under an inch, and only minor river rises have been observed. No
significant precipitation is expected Wednesday through the weekend,
so no river issues are expected.

Grr watches warnings advisories
Mi... Beach hazards statement through Wednesday afternoon for miz037-
043-050-056-064-071.

Lm... Small craft advisory until 6 pm edt Wednesday for lmz844>849.

Synopsis... Wdm
short term... Wdm
long term... Mws
aviation... Meade
hydrology... 63
marine... Wdm


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
SBLM4 - Saginaw Bay Light #1, MI 88 mi50 min WNW 17 G 23 71°F 1009.5 hPa (+2.0)
HLNM4 - 9087031 - Holland, MI 88 mi50 min NW 19 G 24 72°F 1012.3 hPa (+0.8)
CLSM4 - St. Clair Shores, MI 91 mi50 min NW 5.1 G 16 74°F 1010.5 hPa (+3.0)

Wind History for Holland, MI
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Capital Region International Airport, MI5 mi57 minWNW 910.00 miFair69°F50°F51%1011.9 hPa
Mason, Mason Jewett Field Airport, MI12 mi56 minWNW 10 G 1510.00 miFair71°F52°F52%1012.2 hPa
Charlotte, Fitch H Beach Airport, MI16 mi55 minNW 710.00 miFair68°F52°F57%1012.2 hPa

Wind History from LAN (wind in knots)
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Last 24hrS8SW13SW10S7S7S7S9SW8SW10SW14
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1 day agoCalmCalmCalmCalmCalmCalmS3CalmCalmCalmCalmS4S4S3S3Calm5SW6W5SW6W7W5SW6S6
2 days agoW6W7W5CalmCalmCalmCalmCalmS3CalmCalmCalmS3S6S4W7W7SW6W65Calm4W5Calm

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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Weather Map
wmap_A
IR Satellite Image from GEOS
east_satellite

GOES Local Image of GreatLakes    EDIT
Geos

Wind Forecast for Grand Rapids, MI (20,4,5,8)
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Ground Weather Radar Station Detroit, MI
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weather_mapweather_map weather_map

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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.