Friday, June23, 2017 L-36.com


Marine Weather and Tides
Haslett, MI

Version 3.4
What's New / NOTES
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 5:58AMSunset 9:21PM Friday June 23, 2017 6:19 AM EDT (10:19 UTC) Moonrise 4:45AMMoonset 7:50PM Illumination 1% Phase: New Moon; Moon at 29 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.con.kdtx.ma.w.0014.000000t0000z-170623t0115z/ 844 Pm Edt Thu Jun 22 2017
.a special marine warning remains in effect until 915 pm edt... For the following areas... Detroit river... Lake st. Clair open lake (u.s. Portion)... At 844 pm edt...a strong Thunderstorm was located near the ambassador bridge...moving northeast at 30 knots. Hazard...wind gusts to 40 knots. Source...radar indicated. Impact...small craft could be damaged in briefly higher winds and suddenly higher waves. The strong Thunderstorm will be near... Grosse pointe around 855 pm edt. St. Clair shores around 910 pm edt. Metro beach metropark marina...st clair flats old channel light and mt clemens harbor of refuge around 915 pm edt. Precautionary/preparedness actions... Move to safe harbor until hazardous weather passes. && lat...lon 4255 8259 4256 8263 4254 8266 4237 8283 4232 8306 4232 8312 4238 8295 4245 8291 4254 8291 4259 8285 4266 8285 4272 8269 4270 8263 4261 8254 4262 8260 4261 8258 4260 8255 4261 8253 time...mot...loc 0044z 241deg 29kt 4238 8306 hail...0.00in wind...40kts
This is a Weather Statement Zone, please check the Date to see if it has expired
LCZ423 Expires:201706230115;;663543 FZUS73 KDTX 230044 MWSDTX MARINE WEATHER STATEMENT NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI 844 PM EDT THU JUN 22 2017 LCZ423-460-230115-

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 230730
afdgrr
area forecast discussion
national weather service grand rapids mi
330 am edt Fri jun 23 2017
latest update...

synopsis short term long term marine

Synopsis
Issued at 330 am edt Fri jun 23 2017
a cold front will push south through the area this morning bringing
rounds of showers and thunderstorms. Cooler and less humid air will
filter in behind the front this evening and tonight. Lows tonight
will dip into the upper 50s with highs on Saturday only making it to
around 70 degrees. The cooler conditions will persist into Sunday as
well with highs around 70 once again. After a dry night tonight,
small chances for showers and a scattered thunderstorm return to the
forecast for the weekend.

Short term (today through Sunday)
issued at 330 am edt Fri jun 23 2017
we will be dropping the areal flood watch with this forecast
issuance as the heavier rain is winding down across central lower
michigan. This area is covered by flood advisories and flood
warnings at this time. South of that area, we are expecting more
transient showers and storms as the cold front is finally on the
move south. The front stalled across central lower michigan earlier
in the night resulting in rainfall totals in excess of 5 inches
across portions of isabella county. Showers and storms will work
south into the i-96 corridor before day break and move south of i-94
around noon. Skies will turn partly cloudy this afternoon as deep
layer rh values below 50 percent late this afternoon and evening.

A quiet night tonight will be followed by a return to more unsettled
weather this weekend. Not expecting a washout, but diurnal
instability will build each afternoon with a chance for showers and
a few storms both Saturday and Sunday. The upper pattern will
feature northwest flow with embedded shortwaves working through the
area.

Long term (Sunday night through Thursday)
issued at 330 am edt Fri jun 23 2017
the long term period starts off with a mid to upper level trough
over the great lakes region. Models are in decent agreement in
tracking it slowly east Sunday night into Tuesday. The latest gfs
is quicker with this features departure. So it looks unsettled with
the cold core system overhead and relatively warmer lakes around.

Mid level heights rise steadily into Wednesday as warm air advection
strengthens. Will need to monitor the risk for showers and
thunderstorms as the warm front lifts north.

Another mid level low trough drops out of the canadian prairies for
Thursday resulting in height falls for mi. We could see
thunderstorms developing by the end of the period.

I did warm up temperatures slightly during the warm air advection
period as we commonly see values that end up higher than forecasted
in those regimes this far out.

Aviation (for the 06z tafs through 06z Friday night)
issued at 212 am edt Fri jun 23 2017
a cold front stretches from a little north of kmkg to near kmop at
06z. Showers and thunderstorms are located along and north of the
front. The front will sag south through the night and be near the
i-94 TAF sites in the 12z to 15z time frame. MVFR ceilings will
become more widespread through the remainder of the night and
possibly even dip into the ifr category towards 12z. Showers and
thunderstorms will gradually drop south through the area between
06z and 12z. The showers and storms should be pushing south and
east of the area around 15z or so. After 18z,VFR weather is
expected.

Marine
Issued at 330 am edt Fri jun 23 2017
some borderline small craft advisory conditions are possible this
morning as the low level jet is situated over the southern half of
lake michigan. The port sheldon buoy is at 3.6 feet at the present
time while winds at the mkg ASOS are gusting to 25 knots. Feel these
winds and waves will be short lived this morning and will not issue
a sca. Winds and waves should remain below criteria tonight and
tonight, with addition borderline SCA conditions Saturday into
Sunday.

Hydrology
Issued at 300 pm edt Thu jun 22 2017
locally heavy rainfall and perhaps minor areal flooding appears
possible Thursday evening overnight. Pw values will rise over 1.75
inches this evening as sharply higher-dewpoint air at 850 mb is
advected from the south. These pw values are in the range of
daily records for june in the dtx-area sounding climatology. Higher
moisture content in the column of atmosphere will favor more
efficient rain production. With a tendency for storms to repeat over
parts of the area tonight, it seems reasonable that some locations
could receive over 2 inches of rainfall within a few hours. The most
favored area for significant rain totals Thursday night appears to
be north of i-96.

The tendency for flooding to develop will depend on local antecedent
conditions. While may and early june were rather dry, last week's
rainfall ranged from 1.5 to locally over 5 inches in areas north of
south haven, hastings, and lansing. In addition, areas along and
north of m-20 saw between 0.5 and 1.5 inches of rain Thursday
morning. Places that saw heavy rain last week will be more prone
to having at least minor areal or street flooding. As for rivers,
the the flat near smyrna and the maple near maple rapids are running
high after last week's rain, and will be less tolerant of any
additional heavy rain that falls within their basins. Above bankfull
rises are possible, so people with interests along those rivers
should monitor the situation.

Grr watches warnings advisories
Mi... None.

Lm... None.

Synopsis... Duke
short term... Duke
long term... Mjs
aviation... Duke
hydrology... Cas
marine... Duke


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
SBLM4 - Saginaw Bay Light #1, MI 82 mi80 min S 14 G 17 66°F 1003 hPa (-2.1)
CLSM4 - St. Clair Shores, MI 83 mi80 min SSW 8.9 G 15 73°F 1004.7 hPa (-2.8)
THRO1 - 9063085 - Toledo, OH 87 mi50 min SSW 9.9 G 16 72°F 1005.1 hPa67°F

Wind History for Toledo, OH
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Capital Region International Airport, MI11 mi27 minSSW 75.00 miLight Rain Fog/Mist72°F68°F87%1002.9 hPa
Mason, Mason Jewett Field Airport, MI12 mi28 minS 310.00 miOvercast70°F68°F96%1004.1 hPa
Owosso, Owosso Community Airport, MI22 mi25 minSSW 610.00 miOvercast72°F67°F87%1003.4 hPa
Howell, Livingston County Airport, MI24 mi27 minSSW 310.00 miOvercast70°F66°F90%1004.1 hPa

Wind History from LAN (wind in knots)
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SW13SW9SW11SW7SW7S8S6S11S10S11S9SW8S8S7
1 day agoCalmNW4NW4N4NE54Calm3W4N3W5W3S5SW9S4CalmCalmCalmCalmSE7S9SE7S9S11
2 days agoSW8W10W12W12W12
G17
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W9SW11
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W14W9W6NW3CalmW3CalmCalmCalmCalmCalmCalm

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 (6,6,7,8)
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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.