Monday, August20, 2018 L-36.com


Marine Weather and Tides
Benton Heights, MI

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Sunrise 6:57AMSunset 8:37PM Monday August 20, 2018 11:03 AM EDT (15:03 UTC) Moonrise 3:52PMMoonset 12:51AM Illumination 67% Phase: Waxing Gibbous; Moon at 9 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- 1042 Am Edt Mon Aug 20 2018
.small craft advisory in effect from Tuesday afternoon through Wednesday evening...
Rest of today..East winds 15 to 20 knots. Showers and Thunderstorms likely in the afternoon. Waves around 1 foot.
Tonight..Southeast winds 15 to 25 knots veering south 10 to 15 knots toward daybreak. Showers and Thunderstorms. Waves 1 to 2 feet.
Tuesday..West winds 10 to 20 knots becoming north to 30 knots. Showers and Thunderstorms likely until midday, then a chance of showers and Thunderstorms in the afternoon. Waves 1 foot or less building to 6 to 8 feet.
Tuesday night..North winds to 30 knots. Partly cloudy. A slight chance of rain showers in the evening. Waves 6 to 8 feet.
LMZ844 Expires:201808202115;;949735 FZUS53 KGRR 201442 NSHGRR Nearshore Marine Forecast National Weather Service Grand Rapids MI 1042 AM EDT Mon Aug 20 2018 For waters within five nautical miles of shore on Lake Michigan LMZ844-202115-


7 Day Forecast for Marine Location Near Benton Heights, MI
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location: 42.11, -86.42     debug


Area Discussion for - Northern Indiana, IN
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Fxus63 kiwx 201050
afdiwx
area forecast discussion
national weather service northern indiana
650 am edt Mon aug 20 2018

Synopsis
Issued at 421 am edt Mon aug 20 2018
an upper level disturbance will move across the area later today
and tonight. Showers and some storms will develop and spread
across the area today and then persist through Tuesday. Rainfall
amounts should be around an inch and a quarter. Drier, cooler and
less humid weather will follow starting Wednesday. Highs will be
from 80 to 85 today, and then in the 70s through Friday.

Short term (today through Tuesday)
issued at 418 am edt Mon aug 20 2018
at the onset, have been monitoring the flash flood potential for a
small privately owned dam (black hawk dam) that prompted a flash
flood watch Sunday. Conditions seemed to have stabilized for now.

Will continue with the watch for now and update as needed.

An upper level low near kansas city early this morning will move
northeast and then become an open upper level trof over the upper
great lakes region tonight. This system will bring another round
of showers and storms today into Tuesday. The low level shear
appears marginal for severe storms, especially with thin capes and
low equilibrium levels per 00z GFS bufkit. Instability will be
very limited with capes under 1000 j kg. An isolated strong to
severe storm is possible with strong gusty winds. In addition,
locally heavy rain that may cause some local flooding. Rainfall
amounts between 1.00 and 1.50 inch are expected by late Tuesday.

Long term (Tuesday night through Sunday)
issued at 418 am edt Mon aug 20 2018
conditions will clear out behind the low pressure area for Wednesday
and Thursday as high pressure builds in and brings cooler and
less humid weather. Highs will be in the 70s through Friday. Lows
should drop well into the 50s Wednesday night and Thursday
night. The next system will bring a chance for storms this
weekend.

Aviation (for the 12z tafs through 12z Tuesday morning)
issued at 608 am edt Mon aug 20 2018
lead short wave with an accompanying upper jet streak will lift
northward across the southern western great lakes region later
this afternoon. Continued broad positive low mid level advection
will accompany warm frontal progression into northern indiana this
afternoon. Diurnally enhanced instability and approach of these
forcing mechanisms should result in period of showers and
thunderstorms during the mid late afternoon hours at both ksbn and
kfwa. Some indications that a brief lull may develop early this
evening as initial zone of stronger theta-e advection low level
moisture convergence lifts across lower michigan, and as weak mid
level dry slot punches into northern indiana. Secondary advective
forcing surge with approach of primary upper low should result in
renewed showers and storms late evening into the overnight.

Thunder will be possible for much of this forecast valid period
from later this afternoon into the overnight, but for 12z tafs
will likely focus on period of greatest confidence this afternoon
for tsra inclusion. Periodic MVFR cigs, possibly below 2000 feet
are expected tonight, and in association with any heavier showers
and thunderstorms late this afternoon. Southeast winds of 10 to 15
knots this afternoon will veer southerly tonight following warm
frontal progression.

Iwx watches warnings advisories
In... Beach hazards statement from Tuesday afternoon through Wednesday
evening for inz003.

Mi... Beach hazards statement from Tuesday afternoon through Wednesday
evening for miz077.

Flash flood watch until 4 pm edt this afternoon for miz080.

Oh... None.

Lm... Small craft advisory from 2 pm Tuesday to 8 pm edt Wednesday for
lmz043-046.

Synopsis... Skipper
short term... Skipper
long term... Skipper
aviation... Marsili
visit us at

Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
SJOM4 - St. Joseph, MI 4 mi63 min Calm G 5.1 73°F 1015.2 hPa (+0.3)
45026 - St. Joseph, MI 14 mi23 min ESE 9.7 G 12 73°F 76°F1 ft1013.7 hPa64°F
45168 20 mi23 min E 9.7 G 14 73°F 76°F1 ft1014.4 hPa64°F
SVNM4 - South Haven, MI 21 mi33 min E 11 G 14 73°F
MCYI3 - Michigan City, IN 37 mi33 min E 8.9 G 9.9 74°F 65°F
45170 38 mi23 min ESE 9.7 G 14 74°F 77°F1 ft67°F
HLNM4 - 9087031 - Holland, MI 47 mi39 min ESE 5.1 G 6 73°F 1014.9 hPa65°F

Wind History for Holland, MI
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Southwest Michigan Regional Airport, MI2 mi70 minESE 710.00 miFair73°F64°F74%1014.4 hPa
South Haven, South Haven Area Regional Airport, MI19 mi68 minESE 810.00 miFair72°F64°F79%1015.2 hPa

Wind History from BEH (wind in knots)
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Last 24hrCalm34NW6NW8N54E3E5CalmCalmE3E3E4E3SE4SE6SE4E5E5E7E8SE7E7
1 day ago445NW6N756--43CalmCalmCalmCalmCalmCalmCalmCalmCalmCalmE3CalmCalmCalm
2 days agoCalmW8W83NW4444N3CalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalm43

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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wmap_A
GOES Local Image of    EDIT
NOTE: East coast views moved to GEOS-16. They are experimental and not well supported by NOAA so they may not be correct so be warned. This change required redoing a large amount of the GOES code. If the image you are expecting is not showing, please let me know. You may need to use the EDIT function to update your location.
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Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for Northern Indiana, IN (11,2,3,4)
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Ground Weather Radar Station Northern Indiana, IN
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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.