Friday, April3, 2020
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Marine Weather and Tides
Detroit, MI

Version 3.4
NOTICE
12/16/2019 NOAA is having trouble with requests that include wind gusts. I am posting graphs without wind gusts until it gets fixed.
10/9/2019 Updated the Marine Zones.
9/4/2019 Fixed the weather maps due to NOAA moving them.
7/25/2019 New feature in the Airports section gives a link to 5 minute updates for data reports.

Sunrise 7:08AMSunset 8:02PM Friday April 3, 2020 5:52 AM EDT (09:52 UTC) Moonrise 1:36PMMoonset 3:51AM Illumination 78% Phase: Waxing Gibbous; Moon at 10 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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LCZ422 /o.exp.kdtx.ma.w.0067.000000t0000z-191230t1300z/ 754 Am Est Mon Dec 30 2019
.the special marine warning will expire at 800 am est... The affected areas were... St. Clair river... Lake st. Clair... The showers have moved out of the area. Lat...lon 4289 8247 4276 8247 4261 8252 4255 8259 4256 8264 4238 8282 4236 8286 4239 8294 4259 8285 4266 8285 4272 8269 4270 8261 4265 8259 4264 8256 4265 8255 4276 8251 4289 8252 4302 8244 4297 8241 time...mot...loc 1254z 216deg 43kt 4352 8232 4307 8173
LCZ422 Expires:201912301304;;588067 FZUS73 KDTX 301254 MWSDTX Marine Weather Statement National Weather Service Detroit/Pontiac MI 754 AM EST Mon Dec 30 2019 LCZ422-460-301304-


7 Day Forecast for Marine Location Near Detroit city, MI
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location: 42.38, -83.1     debug


Area Discussion for - Detroit/Pontiac, MI
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FXUS63 KDTX 030752 AFDDTX

Area Forecast Discussion National Weather Service Detroit/Pontiac MI 352 AM EDT Fri Apr 3 2020

DISCUSSION.

Quiet weather today into Saturday afternoon as an amplified, yet narrow, ridge resides overhead. This ridge is sandwiched in between a strong trough axis swinging through the central Plains and a stacked low pressure system off the east coast. All in all a very dry airmass and subsidence will provide for another warm and sunny day today with high temperatures around 60 as heights increase slightly over that of Thursday where maxes reached into the upper 50s.

The main forcing within the trough over the Plains will get pulled northward into the parent low on its way toward James Bay Saturday. A weakening surface cold front will continue to advance eastward through the afternoon with the aide of a northern stream jet streak rotating into the back of the broad trough. Though the remnant mid level forcing will be weak with the vort max lifting north, there will be some residual fgen that will work through southern MI Saturday afternoon. Decent southerly return flow will result in a narrow corridor of moisture where PWATs increase to around 0.75". With almost no instability showing up in guidance, the residual fgen and moisture should be enough to produce at least scattered rain showers. Euro, NAM, ARW, and RGEM all support previous forecast thinking of holding off showers til after 18Z. GFS is slowing down but still tries to bring in showers between 12-18Z barreling right through the dry air in place ahead of the ribbon of moisture so will disregard. the enhanced cloud cover and showers will keep temps down in the upper 50s, but still above average for early April.

Zonal flow pattern then sets up across the eastern two-thirds of the conus as a trough digging down the west coast becomes cutoff by mid week. Dry area of high pressure becomes reestablished by Sunday but northwesterly flow will keep temps in the low to mid 50s, even with a good deal of sunshine. A weak shortwave then tries to spill into the area bringing some mid clouds Monday other the low amplitude ridge building into the Great Lakes will result in only minor thermal recovery.

We will be watching the mid week period for potential shower/thunderstorm activity as energy ejecting out of the deep cutoff low phases with a trough digging southeast through Canada. Early indications are for a warm front to develop and lift northward toward the southern MI border on Tuesday. How close it gets to MI will dictate how far north precip chances will spread as isentropic ascent expands northward. The associated surface low will then track eastward with a track yet to be determined as it will be guided by the northern stream trough set to drop through the Great Lakes Tuesday night and into Wednesday. Currently tracks are as far north as northern lower MI (GFS) and as far south as the southern MI border (EURO). So will continue to highlight chances of thunderstorms during this time as we wait for better agreement.

MARINE.

High pressure sliding to the east of Michigan into tonight will bring favorable marine conditions today into tomorrow. Winds will shift out of the south Friday night into Saturday ahead of an approaching weak low pressure system and associated cold front from the west. This front will bring a narrow line showers with winds remaining light while winds shift back to northerly Saturday evening behind the front. High pressure building back across the region will bring continued light winds and low waves Sunday into early next week.

PREV DISCUSSION. Issued at 1200 AM EDT Fri Apr 3 2020

AVIATION .

Strongly anticyclonic flow in the sfc-725mb layer has allowed surface ridge axis to build into Southeast Michigan. A very dry airmass is now in place with precipitable water at less than .20 inch. Nil moisture will support high stability through Friday. Enough high cloud spilling down into the Great Lakes to carry a SCT250 group. Light northeasterly or variable wind overnight.

DTW THRESHOLD PROBABILITIES .

* None.

DTX WATCHES/WARNINGS/ADVISORIES. MI . NONE. Lake Huron . NONE. Lake St Clair . NONE. Michigan waters of Lake Erie . NONE.

DISCUSSION . DRK MARINE . AA AVIATION . CB

You can obtain your latest National Weather Service forecasts online at www.weather.gov/detroit.


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
CLSM4 - St. Clair Shores, MI 13 mi52 min W 1.9 G 4.1 38°F 1018.6 hPa (-0.4)
AGCM4 35 mi58 min 32°F 39°F1017.5 hPa
THLO1 - Toledo Light No. 2 OH 39 mi52 min NNW 4.1 G 4.1 43°F
TWCO1 48 mi32 min NNE 5.1 G 7
THRO1 - 9063085 - Toledo, OH 51 mi58 min WNW 6 G 7 42°F 1017.9 hPa29°F

Wind History for Toledo, OH
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Coleman A Young Municipal Airport, MI5 mi59 minWNW 310.00 miFair35°F28°F76%1018.4 hPa
Troy, Oakland/Troy Airport, MI12 mi57 minN 010.00 miFair36°F24°F64%1018.6 hPa
Detroit, Detroit Metropolitan Wayne County Airport, MI16 mi59 minN 09.00 miMostly Cloudy38°F25°F60%1018.5 hPa
Detroit/Grosse Ile, Grosse Ile Airport, MI20 mi56 minN 010.00 miFair35°F31°F87%1017.9 hPa
Selfridge Air National Guard Base, MI22 mi56 minW 310.00 miFair33°F28°F82%1018.4 hPa

Link to 5 minute data for KDET

Wind History from DET (wind in knots)
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Last 24hrNW5NW3NW4NW6NW8N10N6NW10
G16
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N5----S4CalmNE4CalmCalmCalmCalmW3
1 day agoN5N4N5N5N7N5N8NE8N10N8N8N7N6N7N6N3W4NW3NW4W4W4W3W3W5
2 days agoN5N5N6NE8NE6N10NE74E7NE7N75E7NE6NE8N7N8N8NE5NE5N3N4NE7N5

Tide / Current Tables for
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Tide / Current Tables for
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Weather Map
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wmap_A
GEOS Local Image of GreatLakes    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.
Link to Loop

Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for Detroit/Pontiac, MI (5,6,7,8)
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Ground Weather Radar Station Detroit, MI
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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 numerous 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.