Monday, March27, 2017 L-36.com


Marine Weather and Tides
Haslett, MI

Version 3.4
What's New / NOTES
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.
3/12/2015 - Added section for Gulf current for users in the GMZ marine zones.
This was requested by a user. If you have requests, please let me know.

Sunrise 7:25AMSunset 8:00PM Monday March 27, 2017 8:28 PM EDT (00:28 UTC) Moonrise 6:25AMMoonset 6:38PM Illumination 0% Phase: New Moon; Moon at 0 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.can.kdtx.ma.w.0004.000000t0000z-170301t0900z/ 349 Am Est Wed Mar 1 2017
.the special marine warning is cancelled... The affected areas were... Detroit river... Michigan waters of lake erie... The Thunderstorms have moved out of the area and no longer pose a significant threat to boaters. A severe Thunderstorm watch remains in effect until 400 am est for southeastern michigan. Lat...lon 4172 8346 4173 8345 4173 8350 4180 8350 4195 8337 4196 8328 4201 8325 4204 8315 4200 8313 4190 8325 4189 8331 4182 8337 4172 8341 time...mot...loc 0846z 274deg 49kt 4211 8288 4163 8356
This is a Weather Statement Zone, please check the Date to see if it has expired
LCZ423 Expires:201703010858;;822801 FZUS73 KDTX 010849 MWSDTX MARINE WEATHER STATEMENT NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI 349 AM EST WED MAR 1 2017 LCZ423-LEZ444-010858-

7 Day Forecast for Marine Location Near Haslett, MI
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location: 42.74, -84.4     debug


Area Discussion for - Grand Rapids, MI
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Fxus63 kgrr 272340
afdgrr
area forecast discussion
national weather service grand rapids mi
740 pm edt Mon mar 27 2017
latest update...

aviation

Synopsis
Issued at 320 pm edt Mon mar 27 2017
a busy spring pattern will persist through the next week. Several
upper level waves will track west to east across the country. Each
system will bring precipitation chances of some degree to parts
of lower michigan. Dry times are almost evenly distributed in the
forecast with fair weather from the later half of Tuesday into
Wednesday and again next weekend. High and low temperatures are
expected to be near seasonal normals.

Short term (this evening through Wednesday night)
issued at 320 pm edt Mon mar 27 2017
an upper level shortwave and weakening surface low will pass well
to our south this evening and overnight. Initially, rain chances
extended as far as central lower michigan. Trends have continued
to keep rain further south, especially with high res models.

Regional radar and surrounding observations point in the same
direction. Rain chances will largely remain south of i-96, but
probabilities have been lowered. What falls will likely be
scattered an light, primarily along and south of i-94 this
evening.

Aside from any leftover sprinkles, the overnight hours continue to
trend drier. Low level moisture hangs around a bit, raising the
question whether patchy fog will develop overnight. Winds may be
the mitigating factor here, as they switch out of the north and
wind speed minimums are short lived. The highest likelihood would
be across the south (azo to jxn) where ground moisture is high,
as well as the far north within cooler valleys. Even what develops
shouldn't result in real impact, but deserves a mention.

The remainder of the period looks rather nice. Dry air increases
in depth, which should break clouds Tuesday afternoon from north
to south. We should see a sunny end to Tuesday with sunshine
extending Wednesday. High clouds will begin to stream in Wednesday
afternoon well ahead of another closed upper level system over the
plains. High temperatures may be underdone a bit, depending on how
fast clouds move in. Rain is likely to hold off through much of
Wednesday before developing late Wednesday night.

Long term (Thursday through Monday)
issued at 320 pm edt Mon mar 27 2017
little change in previous thinking. There is remarkably good
agreement among the mid range models with respect to a slow moving
southern stream upper trough that is expected to bring the next
chance of precipitation to the area beginning late Wednesday night
as it lifts northeast. As noted already, slow movement of this
system will draw a lot of gulf moisture northward ahead of it. We
still expect an initial brief period of mixed precipitation type
early Thursday morning related to wet bulb effects with expected
cold dry northeasterly winds in the lowest levels.

Thursday afternoon and evening could see a period of heavy rain
south of i-96 as several medium range solutions point towards low
level fgen coupled with upper deformation ahead of the approaching
low. Predictability with such details at this time range is limited,
so will keep watching, especially since this same area experienced
the greatest rain totals over the last couple of days.

Very low predictability on next round of precipitation advertised
Sunday into early Monday. Overall pattern shows this system to be
much drier, so little or no impacts expected.

Aviation (for the 00z tafs through 00z Tuesday evening)
issued at 740 pm edt Mon mar 27 2017
MVFR ceilings covered the region early this evening, although a
few breaks withVFR weather was around too. Expect the MVFR will
linger through the night before finally breaking up Tuesday
morning. Some patchy ifr ceilings will possibly develop after
04z, but this was left out of the tafs as the areal coverage
should not be that great. Conditions will finally improve by late
morning/early afternoon on Tuesday as ceilings lift, and then
eventually scattered out from the north by late afternoon.

Marine
Issued at 320 pm edt Mon mar 27 2017
dense fog will continue to gradually lighten up through the
evening with drier air working in from the north.

Northerly winds will keep most of the wave action offshore for the
most part. Big sable and little sable points may see waves briefly
reach near 3 feet Tuesday afternoon/evening. However, winds then
turn out of the east and push waves out over open waters again.

Hydrology
Issued at 320 pm edt Mon mar 27 2017
most rivers have demonstrated within bank rises after rainfall over
the last 4 days. However, more elevated river levels at ionia,
hastings, eagle, and holt may be susceptible to additional rainfall
expected Thursday and Friday, possibly another 0.50"-1.00". This may
act to provide secondary river crests heading into the end of the
week and weekend, potentially higher than the current crests.

Grr watches/warnings/advisories
Mi... None.

Lm... None.

Synopsis... Jam
short term... Jam
long term... Tjt
aviation... Jk
hydrology... Hoving
marine... Jam


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
SBLM4 - Saginaw Bay Light #1, MI 82 mi29 min ENE 7 G 7 41°F 1012.9 hPa (+1.0)
CLSM4 - St. Clair Shores, MI 83 mi29 min SSW 4.1 G 6 56°F 1012.5 hPa (+0.3)
THRO1 - 9063085 - Toledo, OH 87 mi41 min Calm G 1 56°F 1011.6 hPa47°F

Wind History for Toledo, OH
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Lansing, Capital City Airport, MI11 mi36 minWNW 810.00 miOvercast50°F43°F77%1013.4 hPa
Mason, Mason Jewett Field Airport, MI12 mi35 minWNW 610.00 miOvercast52°F47°F85%1012.9 hPa
Owosso, Owosso Community Airport, MI22 mi34 minNW 610.00 miOvercast50°F42°F74%1012.9 hPa
Howell, Livingston County Airport, MI24 mi35 minWNW 410.00 miOvercast53°F46°F78%1012.5 hPa

Wind History from LAN (wind in knots)
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Last 24hrSE5S7S7S6S6SW8SW6W9SW11W8W9W10W8W9W9W8W10W8SW7W11W8W6NW6NW8
1 day agoE10E9E8E5E8E7NE6E8E7E7E7E5E6E7E5E11E10S6S7SE6S7S5SE7SE4
2 days agoN17
G24
NE11NE10NE8NE6NE9NE8NE9NE8NE8NE8NE8NE7NE12NE11NE12NE9NE10E15
G20
NE8E12E8E10E11

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.