Saturday, July11, 2020
Privacy Policy
L-36.com


Marine Weather and Tides
Grosse Pointe Park, 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 6:04AMSunset 9:10PM Saturday July 11, 2020 2:48 PM EDT (18:48 UTC) Moonrise 12:00AMMoonset 11:31AM Illumination 62% Phase: Waning Gibbous; Moon at 21 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
    EDIT      (on/off)   Help
LCZ422 /o.exp.kdtx.ma.w.0022.000000t0000z-200710t1945z/ 336 Pm Edt Fri Jul 10 2020
.the special marine warning will expire at 345 pm edt... The affected areas were... St. Clair river... Lake st. Clair... The Thunderstorms have weakened and no longer pose a significant threat to boaters. Lat...lon 4293 8245 4289 8247 4261 8252 4255 8259 4256 8264 4248 8272 4255 8287 4268 8279 4272 8269 4270 8261 4265 8259 4264 8256 4265 8255 4276 8251 4289 8252 4301 8242 4298 8241 time...mot...loc 1935z 198deg 13kt 4278 8259 4250 8291
LCZ422 Expires:202007101945;;637904 FZUS73 KDTX 101936 MWSDTX Marine Weather Statement National Weather Service Detroit/Pontiac MI 336 PM EDT Fri Jul 10 2020 LCZ422-460-101945-


7 Day Forecast for Marine Location Near Grosse Pointe Park city, MI
   Hourly   EDIT   Help
location: 42.34, -82.94     debug


Area Discussion for - Detroit/Pontiac, MI
      (on/off)   Help   NOTE: mouseover dotted underlined text for definition
FXUS63 KDTX 111633 AFDDTX

Area Forecast Discussion National Weather Service Detroit/Pontiac MI 1233 PM EDT Sat Jul 11 2020

AVIATION.

Breezy afternoon with northwest winds gusting aoa 20 knots with sct- bkn VFR (4-8 kft) cu developing on schedule. Will be watching upper level wave tracking through the Western Great Lakes and into the northern Ohio Valley late tonight. Will allow for an increase in mid clouds across the southern TAF sites by sunrise, but expecting any showers/convective activity to remain south of the border.

DTW THRESHOLD PROBABILITIES.

* Low for cigs aob 5000 ft this afternoon.

PREV DISCUSSION. Issued at 412 AM EDT Sat Jul 11 2020

DISCUSSION .

Airmass modification is underway this morning for SE MI in the wake of heavy rainfall associated with a sharp shortwave trough. While the low-level cyclonic circulation is now east of the CWA, a few lagging deformation showers will persist for a few more hours before drier conditions are realized area-wide. Winds aloft align from the W/NW today on the periphery of an inbound ridge axis. This will be sufficient in the near-term to advect drier air from 850-500 mb flow trajectories tracing back toward Hudson Bay, intersecting a region of lower ThetaE air across northern Ontario. This will contribute to the decrease in mid-level dewpoints during the late morning hours as compressional warming from stronger mid-tropospheric subsidence helps setup a capping inversion in the 750-650 mb layer. HiRes guidance maintains a bearish outlook for diurnal convection even as subtle low-amplitude shortwave energy generates weak vorticity through central Lower Michigan. Cut afternoon PoPs accordingly with an accelerated exit of late morning showers. Outdoor conditions will feel more comfortable given a 3-5 C drop in 850 mb temperatures this afternoon and dewpoints in the low-mid 60s paired with a light breeze. Overnight lows return to normal, in the low 60s with partly clear skies.

Sunday begins dry and cool with increasing cloudiness as a ridge running shortwave trough dives southeast toward the Ohio Valley. While the disturbance primarily remains south of the Michigan border, there may still be enough PVA to facilitate some lift as the wave flattens and pivots into the ambient downstream synoptic trough fusing with what remains of Tropical Depression Fay. PWATs will climb back above the 1.00 inch mark with moisture convergence ahead of a slowly southward propagating cold front. Expect any showers or thunderstorms that develop Sunday afternoon to be focused over the southern tier counties given some evidence that a corridor of +1000 J/kg of MUCAPE and mid-level lapse rates exceeding 6.5 C/km may setup across the aforementioned area. As has been the theme for much of the past week, shear will be lacking (effective less than 15 knots) suggesting a more pulse/cluster-like convective mode. Temperatures will be the coolest the area has seen in a while with highs only peaking in the upper 70s to lower 80s and overnight lows near or just below 60 F across the interior localities.

Higher uncertainty exists with Monday's forecast and the likelihood of showers/storms. PoPs may be a bit overdone given the dryness of the low-levels and solid mid-level capping. Yet it's early, thus decided to maintain NBM values. A warming trend also starts on Monday as a ridge axis pushes into the western Great Lakes. Height rises will gradually increase through mid-week as 90 degree heat returns with higher humidity from a Gulf moisture connection extending from southern Texas. This will help raise storm chances on Wednesday and Thursday.

MARINE .

An area of low pressure and an attendant cold front will slowly wobble northeast towards Georgian Bay the remainder of tonight and into early Saturday. Scattered showers and thunderstorms will diminish in coverage after sunrise as the low moves further northeast from the region. A tightening pressure gradient between the departing low and diffuse high pressure over the upper Midwest and mid-Mississippi Valley will allow for fresh moderate northwest flow to set up across the local waters Saturday, with gusts around 20 knots along the nearshore waters. A few gusts may approach 25 knots at times, but should be sporadic enough coupled with low wave heights to preclude any mention of hazardous small craft conditions at this time.

A secondary cold front will then cross the region late in the weekend with another round of isolated to scattered thunderstorms. Behind the secondary cold front, lighter northwest flow will be reinforced across the local waters heading into early next week.

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

AVIATION . SF DISCUSSION . KK MARINE . IRL/KK

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


Weather Reporting Stations
   EDIT       (on/off)   Help   NOTE: Click on distance to see the station location on a map
Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
CLSM4 - St. Clair Shores, MI 10 mi49 min NW 8.9 G 19 81°F 1008.5 hPa (-0.3)
45147 - Lake St Clair 15 mi49 min NW 14 G 19 75°F2 ft1006.6 hPa (+0.3)
AGCM4 29 mi49 min 82°F 70°F1007.5 hPa (+0.0)
THLO1 - Toledo Light No. 2 OH 38 mi59 min W 20 G 23 79°F
45165 47 mi19 min WNW 14 G 19 80°F 79°F2 ft63°F
TWCO1 47 mi29 min WNW 19 G 23 79°F
SBIO1 - South Bass Island, OH 49 mi49 min WNW 21 G 22 78°F 1008.8 hPa (+0.0)

Wind History for Toledo, OH
(wind in knots)    EDIT      (on/off)   Help
2
PM
3
PM
4
PM
5
PM
6
PM
7
PM
8
PM
9
PM
10
PM
11
PM
12
AM
1
AM
2
AM
3
AM
4
AM
5
AM
6
AM
7
AM
8
AM
9
AM
10
AM
11
AM
12
PM
1
PM
Last
24hr
W4
NE3
S7
SE7
W3
W7
W7
G11
NW10
G14
W9
G14
NW10
G15
NW15
G21
NW10
G15
NW8
G12
NW10
G14
NW10
G15
NW11
G17
NW11
W10
G14
NW11
G16
NW12
G15
NW13
G17
NW11
G16
NW12
G16
NW11
G15
1 day
ago
NE6
G9
E9
NE6
G9
NE5
G10
E10
E6
SE12
SE6
SE11
G15
S6
G11
SW4
G8
SW4
SW5
S3
SW6
G9
S3
G6
SE5
G8
SW6
S4
G10
SW5
G13
SW5
G10
SW7
G11
SW6
G12
W18
G24
2 days
ago
E6
NE4
G7
NE5
G8
E7
W12
G24
E9
S6
W2
S1
G4
S1
SW2
NW3
NW3
S2
S3
S3
W3
SW3
W3
NW3
SE2
E5
SE3
G6
NE3

Airport Reports
    EDIT      (on/off)   Help   Click EDIT to display multiple airports. Follow links for more data.
AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Coleman A Young Municipal Airport, MI8 mi56 minNW 10 G 1810.00 miPartly Cloudy83°F61°F48%1008 hPa
Troy, Oakland/Troy Airport, MI19 mi54 minW 14 G 2110.00 miPartly Cloudy83°F61°F47%1009.5 hPa
Selfridge Air National Guard Base, MI20 mi1.9 hrsNW 9 G 1810.00 miMostly Cloudy81°F65°F59%1007.9 hPa
Detroit/Grosse Ile, Grosse Ile Airport, MI20 mi54 minNW 12 G 2010.00 miPartly Cloudy82°F61°F50%1008.5 hPa
Detroit, Detroit Metropolitan Wayne County Airport, MI22 mi56 minWNW 14 G 2210.00 miMostly Cloudy82°F61°F49%1008.6 hPa

Link to 5 minute data for KDET

Wind History from DET (wind in knots)
3
PM
4
PM
5
PM
6
PM
7
PM
8
PM
9
PM
10
PM
11
PM
12
AM
1
AM
2
AM
3
AM
4
AM
5
AM
6
AM
7
AM
8
AM
9
AM
10
AM
11
AM
12
PM
1
PM
2
PM
Last 24hrE4SE5SE6S3E6NE5SE4SW5NW7NW9NW8NW10NW8NW8NW11
G17
NW8
G19
NW10NW7NW12
G21
NW8
G20
NW12
G22
NW12
G21
NW11
G19
NW10
G18
1 day agoS8S8SW8SW4S4S5S5SE7S8NW7N3E6E5SE3S3SE5S3S7S8SW7S7S7S4W4
2 days agoW11
G25
NE5CalmSW4CalmSE3CalmCalmCalmCalmCalmSE3CalmCalmW3CalmCalmCalmSE43S6S5S75

Tide / Current Tables for
   EDIT   Weekend mode (on/off)   (on/off)   Help
Tide / Current Tables for
   EDIT      (on/off)   Help
Weather Map
       (on/off)   Help Weather Map
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 (14,3,4,5)
      (on/off)   Help

Ground Weather Radar Station Detroit, MI
   (on/off)   Help
weather_mapweather_map weather_map

Ad by Google

Cookie Policy:
This website uses cookies to save your settings. No personal information is saved. I do not collect statistics on your visit. You can disable cookies in your browser if you like but it is not recommended for this site. I do not sell cookies. Go to a bakery for that. In fact I do not sell anything. To disable cookies from L-36.com, please refer to the Help button in your browser.
Privacy Policy:
I do not sell or share any user data or anything else for that matter. The only personal information I save is in the site log which has a line for each page view which includes the IP address your browser sends in the header as well as which page you requested. I use this to block hackers and other bad actors. I do not use this raw data to create profiles on users. I periodically delete the log files. If you are subject to CCPA, Google ads on this site will not be based on your past behavior so you will likely not see an ad for a lawn mower just because you looked for one at a big box website. I do not believe this site is subject to CCPA but I am doing what I can to follow the guidelines anyway.
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.