Monday, June26, 2017 L-36.com


Marine Weather and Tides
Lawrence, 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 6:06AMSunset 9:24PM Monday June 26, 2017 6:32 PM EDT (22:32 UTC) Moonrise 8:07AMMoonset 10:37PM Illumination 8% Phase: Waxing Crescent; Moon at 3 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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LMZ844 St Joseph To South Haven Mi- 343 Pm Edt Mon Jun 26 2017
.small craft advisory in effect until midnight edt tonight...
Tonight..Northwest winds 20 to 25 knots decreasing to 10 to 20 knots after midnight. Partly cloudy with a slight chance of showers and Thunderstorms in the evening, then mostly clear overnight. A slight chance of waterspouts through the night. Waves 4 to 6 feet.
Tuesday..West winds 10 to 20 knots. Sunny. Waves 2 to 3 feet.
Tuesday night..South winds 5 to 15 knots increasing to 15 to 20 knots toward daybreak. Mostly clear. Waves 1 to 2 feet.
Wednesday..South winds 15 to 25 knots. Mostly Sunny until midday, then mostly cloudy with a chance of showers and Thunderstorms in the afternoon. Waves 1 to 3 feet building to 2 to 4 feet.
LMZ844 Expires:201706270315;;862831 FZUS53 KGRR 261943 NSHGRR Nearshore Marine Forecast National Weather Service Grand Rapids MI 343 PM EDT Mon Jun 26 2017 For waters within five nautical miles of shore on Lake Michigan LMZ844-270315-

7 Day Forecast for Marine Location Near Lawrence, MI
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location: 42.23, -86.09     debug


Area Discussion for - Grand Rapids, MI
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Fxus63 kgrr 261922
afdgrr
area forecast discussion
national weather service grand rapids mi
322 pm edt Mon jun 26 2017
latest update...

synopsis short term long term marine

Synopsis
Issued at 322 pm edt Mon jun 26 2017
another afternoon and evening of spotty showers and isolated storms
can be expected tonight as cool canadian air continues to filter
across the area. Conditions will dry out overnight as the system
begins to pull out. A stray shower will be possible across eastern
areas Tuesday afternoon, but temperatures will warm a few degrees
compared to today.

An occasionally active weather pattern is looking more likely
beginning late Wednesday, and lasting at times through early next
week. Multiple waves of low pressure will move east through the
region at times. These waves will bring the threat of showers and
storms with dry periods in between.

Short term (this evening through Wednesday night)
issued at 322 pm edt Mon jun 26 2017
one more round of spotty showers is now beginning to rotate into the
cwfa this afternoon from the NW as one more major wave moves through
the region. The shower chances will linger into the early overnight
period before the wave rotates out. A rumble of thunder will remain
possible as the cold pool aloft interacts with the diurnal heating
this afternoon.

Tuesday should end up mainly dry across the area, however a slight
chance of a rain shower was inserted into the forecast for the
eastern counties. The models have trended toward the cyclonic flow
aloft lingering a little longer. The eastern counties will be on the
wrn periphery of the upper low Tuesday afternoon. Temperatures will
be a few degrees warmer than yesterday with the core of the coolest
air moving east of the area.

We will see a break in the weather then from Tuesday evening through
Wednesday morning. Rain chances will then increase Wednesday
afternoon and especially Wednesday evening. There is a short wave
that is currently coming onshore off of the pacific to the ca or
coast. This short wave will move along the nearly zonal flow that
will take place once the current low moves out. A 60 knot low level
jet is expected to bring a very moist surge to the area. This will
help develop showers storms over the area Wed afternoon evening.

Right now, the heavier pcpn looks to occur across the northern
portion of the area given the forecast track of the wave.

Heavy rain is a concern given the heavy rain that has fallen across
portions of central michigan over the last week. There is a lot of
wind energy available also that could produce damaging winds. We
will continue to monitor the situation.

Long term (Thursday through Monday)
issued at 322 pm edt Mon jun 26 2017
a low pressure system is expected to pass over upper michigan lake
superior Thursday and drape a front across the region, bringing
showers and thunderstorms to lower michigan Thursday into Friday.

Instability, moisture, and lift may all be present in sufficient
quantities to make severe weather possible.

Another low pressure system will then move from southwest to
northeast across lower michigan Friday and Friday night, accompanied
by more rain and thunderstorms. If the focus of the heavy rain ends
up stretching across the area, we could see areal and river flooding
by the end of the week.

Temperatures will be around normal through the week. Normal highs
are around 80 degrees and normal lows are in the upper 50s.

Aviation (for the 18z tafs through 18z Tuesday afternoon)
issued at 129 pm edt Mon jun 26 2017
isolated showers will become more numerous this afternoon, with
thunder also possible in the afternoon and evening. Some small
hail could occur. Even with this, conditions will be mostly at or
aboveVFR minimum levels through Tuesday afternoon.

West winds will be gusty today at 15 to 30 kts, stronger gusts
will be possible with stronger cells. Winds will decrease below
10 knots tonight.

Marine
Issued at 322 pm edt Mon jun 26 2017
the small craft advisory and beach hazards statement look good and
will be maintained. We will see one more uptick in the winds and
waves this afternoon as one more wave moves by and cooler air surges
in. Conditions will start to improve tonight and settle down more on
Tuesday.

We are looking at hazardous conditions likely returning to the
waters late Tuesday night and Wednesday as the next system
approaches the area. These will likely last at least through
Thursday.

Hydrology
Issued at 1119 am edt Mon jun 26 2017
river levels are trying to return to normal across the region... With
the chippewa river at mt. Pleasant and pine river at alma above flood
stage. Scattered showers and thunderstorms... Which will develop as
an upper low moves over the state this afternoon... Are not expected
to produce the areal coverage or intensity of precipitation needed
to slow the falling of the stages. Therefore... Expect river levels
to continue to fall steadily over the next 24 hours.

Another round of potentially heavy rainfall will occur later
Wednesday into Wednesday night. Deep moisture returns to the
region... And bands of heavy rainfall may occur across central
portions of lower michigan. Rivers in isabella and gratiot
counties are especially vulnerable to excessive rainfall... And
significant rises would likely develop on the pine and chippewa
rivers should the heavy rainfall occur in these basins.

Grr watches warnings advisories
Mi... Beach hazards statement until midnight edt tonight for miz037-
043-050-056-064-071.

Lm... Small craft advisory until midnight edt tonight for lmz844>849.

Synopsis... Njj
short term... Njj
long term... 63
aviation... 63
hydrology... Mws
marine... Njj


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
SVNM4 - South Haven, MI 16 mi33 min NW 22 G 26 61°F
45168 17 mi23 min NNW 16 G 21 61°F 68°F4 ft1017.1 hPa49°F
45026 - St. Joseph, MI 33 mi23 min N 16 G 21 64°F 69°F3 ft1016.7 hPa49°F
HLNM4 - 9087031 - Holland, MI 38 mi45 min WNW 13 G 16 58°F 1016.4 hPa
45029 47 mi23 min NNW 12 G 16 58°F 68°F4 ft1016.7 hPa48°F
MCYI3 - Michigan City, IN 56 mi43 min N 15 G 17 66°F 49°F

Wind History for Holland, MI
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W9
G12

Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
South Haven, South Haven Area Regional Airport, MI12 mi38 minNNW 11 G 2010.00 miMostly Cloudy62°F50°F67%1016.9 hPa
Southwest Michigan Regional Airport, MI20 mi40 minNW 9 G 1610.00 miFair67°F46°F49%1016.5 hPa

Wind History from LWA (wind in knots)
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Last 24hrW9W6W6W5W9
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NW6NW5NW7NW7W11
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W4NW9W9
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1 day agoW4CalmNW6CalmCalmW8
G14
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2 days agoW4SW3CalmW6CalmNW7NW6NW7W7W8NW10
G14
NW8NW7NW9
G15
NW7W9
G14
W10W8
G17
NW8W8W7
G16
W11W8
G16
W8

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 (18,4,5,8)
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Ground Weather Radar Station Grand Rapids/Muskegon, 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.