Friday, February23, 2018 L-36.com


Marine Weather and Tides
Delton, 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 7:24AMSunset 6:27PM Friday February 23, 2018 3:37 PM EST (20:37 UTC) Moonrise 11:58AMMoonset 1:41AM Illumination 61% Phase: Waxing Gibbous; Moon at 8 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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LMZ845 South Haven To Holland Mi- 1107 Pm Est Mon Jan 15 2018
Rest of tonight..Southwest winds 10 to 20 knots backing southeast toward daybreak. Snow. Waves 1 to 3 feet.
Tuesday..East winds around 5 knots backing west, then veering north late in the day. Cloudy with a chance of snow showers. Waves calm.
Tuesday night..North winds 5 to 15 knots backing west 10 to 20 knots toward daybreak. Snow showers likely in the evening, then a chance of snow showers overnight. Waves calm.
Wednesday..West winds to 30 knots backing southwest gales to 35 knots late in the day. Partly Sunny. A slight chance of snow showers until midday. Waves calm. Waves are for ice free areas. This is the last nearshore marine forecast (nshgrr) issuance for the season. The nshgrr will again be issued around april 1st 2018, or as conditions warrant.
LMZ845 Expires:201801161015;;514453 FZUS53 KGRR 160407 NSHGRR Nearshore Marine Forecast National Weather Service Grand Rapids MI 1107 PM EST Mon Jan 15 2018 For waters within five nautical miles of shore on Lake Michigan LMZ845-161015-

7 Day Forecast for Marine Location Near Delton, MI
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location: 42.49, -85.43     debug


Area Discussion for - Grand Rapids, MI
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Fxus63 kgrr 232028
afdgrr
area forecast discussion
national weather service grand rapids mi
328 pm est Fri feb 23 2018
latest update...

synopsis short term long term hydro

Synopsis
Issued at 328 pm est Fri feb 23 2018
after a quiet night and Saturday, rain will move back into the area
Saturday night. A couple rumbles of thunder will also be possible.

This will be a quick moving system, so rainfall amounts should only
be around a quarter inch. Sunday and Sunday night look dry again.

The next chance of rain should hold off until the Wednesday and
Thursday time frame.

Daytime high temperatures will stay in the 40s much of the next
seven days, but we may soar into the 50s Tuesday and Wednesday.

Short term (this evening through Sunday night)
issued at 328 pm est Fri feb 23 2018
the short term will be quiet with the exception of Saturday night
when an occluded front comes through.

High pressure will gradually move in by Saturday. Temps will remain
5 to 10 degrees above normal, with Saturday highs in the 40s.

An occluded front swings through Saturday night giving the region a
quick period of showers and perhaps isolated thunderstorms. The
amount of rain will be held down with the fast movement of the
front, and a general quarter inch of rain is expected. Localized
higher amounts could occur within thunderstorms.

It will become very windy into Sunday as a 982 mb surface low passes
to our nw. We may approach wind advisory criteria with frequent
gusts to around 40 mph. However we look to stay dry Sunday into
Sunday night as high pressure builds over the oh valley.

Long term (Monday through Friday)
issued at 328 pm est Fri feb 23 2018
a period of showers returns for Wednesday and Thursday as another
surface low moves in from the southwest. We will have to watch the
low's track trends as the current movement takes it from chicago to
saginaw. A slight track change to the south or east could result in
snow from this system. At it's current path we should largely see
rain, then change to snow Thursday night into Friday. At this point
the snow potential in this time frame looks to be light.

Aviation (for the 18z tafs through 18z Saturday afternoon)
issued at 1220 pm est Fri feb 23 2018
the region was covered under ifr or lifr conditions as of 17z. A
slow trend upward is expected where much of the lifr is expected
to exit by 20z. The ifr is expected to improve to MVFR by around
00z. Finally, clearing is expected toward 04z, along with the fog
dissipating.VFR conditions are expected from 04z onward.

Wsw winds will remain brisk through the afternoon at 10-15 knots.

These will diminish shortly after sunset.

Hydrology
Issued at 328 pm est Fri feb 23 2018
levels along the grand, thornapple, and kalamazoo rivers have
crested in upriver locations and will crest over the next couple
days downriver. Many river forecast points in these basins are
seeing river levels that challenge modern records over the last 5 to
50 years. Moderate to major flooding is ongoing in the most flood-
prone locations. In kalamazoo this is a record high river level, but
flood impacts compared to sep 2008 are reportedly not quite so bad
due to recent flood mitigation projects. Still, many roads are
closed and properties are taking on water. In kent county, the crest
on Saturday is expected to climb just a little under the levels of
april 2013, but flood impacts will nonetheless be substantial near
the river especially in comstock park.

A tenth of an inch of rain fell Friday morning, and a quarter to
locally half inch of rain is expected Saturday night. This may not
increase the flood impacts much if at all, but it could delay the
recession of river levels.

Please see the latest flood statements or river hydrographs for
details. Hydrographs are available by going to weather.Gov grr and
clicking on the "rivers and lakes" link above the map of flood
warnings.

Grr watches warnings advisories
Mi... None.

Lm... None.

Synopsis... Jk
short term... Jk
long term... Jk
aviation... Jk
hydrology... Cas


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
SVNM4 - South Haven, MI 46 mi37 min SW 9.9 G 9.9 36°F
HLNM4 - 9087031 - Holland, MI 46 mi49 min SW 8 G 9.9 35°F 1020.3 hPa
SJOM4 - St. Joseph, MI 63 mi37 min SW 7 G 9.9 36°F 1022.7 hPa (+2.0)
MKGM4 - Muskegon, MI 70 mi37 min W 13 G 13 35°F 1021.7 hPa (+1.3)35°F

Wind History for Holland, MI
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NW14
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G22
NW14
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NW14

Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
W K Kellogg Airport, MI16 mi44 minW 14 G 207.00 miOvercast44°F42°F93%1021 hPa
Kalamazoo/Battle Creek International Airport, MI18 mi44 minW 12 G 185.00 miFog/Mist44°F41°F89%1021.6 hPa

Wind History from BTL (wind in knots)
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Last 24hrE8E10E8E9E10E75E12E9
G19
E9SE11E8SE10E6SE7SE8SE4S7S8SW8SW11SW10W12
G20
W14
G20
1 day agoN6N5N5N4N3N3N3NE4N5NE6NE8NE6NE6NE8E8NE7E6NE10NE8E11E10E12
G17
NE7E11
2 days agoS16
G23
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G22
SW14
G22
W5S8S10SW8W10NW8NW8NW10NW8NW7NW15NW9NW10
G16
NW9NW8N9N12N7N7NW7N6

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 (15,3,4,5)
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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.