Saturday, December7, 2019
Privacy Policy
L-36.com


Marine Weather and Tides
Bay City, MI

Version 3.4
NOTICE
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.
6/2/2019. Many thanks to a user for reporting an error on one of the Edit pages. The switch to PHP 7.2 caused many pages that previously worked to quit working. I fixed many but I still depend on users to report ones I missed. Please report errors HERE or send an email to me at L-36.com. Allen

Sunrise 7:53AMSunset 5:00PM Saturday December 7, 2019 12:59 AM EST (05:59 UTC) Moonrise 2:50PMMoonset 2:55AM 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
    EDIT      (on/off)   Help
LHZ422 Inner Saginaw Bay Sw Of Point Au Gres To Bay Port Mi- 1006 Pm Est Fri Dec 6 2019
Rest of tonight..Northwest winds 10 to 15 knots becoming west 5 to 10 knots early in the morning. Partly cloudy. Waves 2 feet or less.
Saturday..Southwest winds 5 to 10 knots increasing to 10 to 15 knots in the late morning and afternoon. Cloudy. Waves 1 to 3 feet.
Saturday night..South winds 15 to 20 knots increasing to 20 to 25 knots after midnight. Partly cloudy in the evening becoming mostly cloudy. Waves 1 to 3 feet building to 2 to 4 feet in the late evening and overnight. A small craft advisory may be needed.
Sunday..Southwest winds 20 to 25 knots diminishing to 15 to 20 knots early in the afternoon. Gusts to 30 knots. Cloudy. Waves 3 to 5 feet. Waves occasionally around 7 feet. SEe lake huron open lake forecast for days 3 through 5.
LHZ422 Expires:201912071015;;968569 FZUS53 KDTX 070306 NSHDTX Nearshore Marine Forecast for Michigan National Weather Service Detroit/Pontiac MI 1006 PM EST Fri Dec 6 2019 For waters within five nautical miles of shore Waves are the significant wave height - the average of the highest 1/3 of the wave spectrum. Occasional wave height is the average of the highest 1/10 of the wave spectrum. LHZ422-071015-


7 Day Forecast for Marine Location Near Bay City, MI
   Hourly   EDIT   Help
location: 43.58, -83.88     debug


Area Discussion for - Detroit/Pontiac, MI
      (on/off)   Help   NOTE: mouseover dotted underlined text for definition
FXUS63 KDTX 070453 AFDDTX

Area Forecast Discussion National Weather Service Detroit/Pontiac MI 1153 PM EST Fri Dec 6 2019

AVIATION.

Cold cyclonic flow will remain over Lower Michigan through tonight with composite longwave trough in place over far eastern North America. Differential anticyclonic vorticity advection with rising geopotential heights supports increasing high pressure over the region. Satellite trends show steady erosion of lower cloud stratus through the course of the evening. High cloud will move into the state on Saturday in response to increasing warm air advection aloft and remnant shortwave passing from the Dakotas down through the Great Lakes. VFR conditions. Low confidence in any MVFR boundary layer cloud for Saturday.

DTW THRESHOLD PROBABILITIES .

* Low for cigs aob 5000 feet tonight and Saturday.

PREV DISCUSSION. Issued at 343 PM EST Fri Dec 6 2019

DISCUSSION .

Anticyclonic flow in place with active isentropic downglide will continue to produce dry weather throughout the bulk of the cwa with the exception of the northern portion of the Thumb, where a slight chance for an isolated snow shower will exist. Advancing moisture off of Lake Superior/Huron & sufficient CAPE/potential instability (for winter standards) may be just enough to produce the aforementioned snow shower, however, a dry sub-cloud layer and weak forcing will be a limiting factor. Overall, no accumulation is expected, and all PoP chances diminish after 00Z.

Approaching ridge axis and lowering inversion heights to aid in scouring out some lake effect cloud cover this evening and overnight as the 1028 mb low tracks across the Ohio Valley. Some radiational cooling and ongoing northwesterly flow will help support overnight lows in the upper-teens across the northern cwa and lower-20s across the urban Metro area before return flow from the departing high allows mid-level clouds to fill back in across the state. Mid-level cloud cover to hold on through the bulk of the morning and likely early afternoon before southerly flow pulls cloud cover to the north. Expecting another dry day under the influence of high pressure, but have added a very low-end chance for PoPs across the Tri-Cities given the latest ECMWF solution, where weak waa/isentropic interacts with a glancing shortwave. Given high cloud bases and subsequent dry air below, it will remain hard to come by any precipitation. Otherwise, flow turning zonal in the mid-levels and advancing clouds will help keep temperatures in the 30s for a high.

Attention will then turn to Sunday, where return flow from high pressure located the western Atlantic will start to stream in Gulf moisture and increase waa with h850 temperatures rising from an average of -7C (Sat 12Z) to 2C (Sun 12Z). Resulting daytime highs look to peak in the mid to upper-40s across the Metro area and low to mid-40s across the Tri-Cities and Thumb. Efficient transport of warmer air and moisture will be aided by a 40-50 knot LLJ setting up over the Great Lakes as a stationary front sets up across lower MI. Series of shortwaves advancing through the mean trough and PW rising toward .80 inches will be more than sufficient to produce widespread rain late Sunday through Monday. Continued SW flow will help support a second day in the 40s on Monday (peaking near 50 closer to MI/OH border). Passage of the low is projected to travel across northern lower Michigan late Monday into Tuesday, allowing a deep thermal trough to start to build in across the region. A transition from rain to snow will be possible on the back end of the system early Tuesday, before moisture axis moves well east of the state.

For the middle of the week, thermal trough with h850 temperatures nearing -20C to support below normal temperatures, where wind chills will near or dip down into the single digits (Thursday morning). This will also likely be an active week regarding lake effect snow showers given the cold airmass and will be something to address early next week.

MARINE .

Low pressure moves off to New England tonight but leaves an elevated northwest gradient in its wake while high pressure builds into the western and southern Great Lakes. Gusts to near-gales this afternoon over central Lake Huron will weaken this evening and tonight as the high moves in, and wave action will also weaken and turn more offshore through tonight. The Small Craft Advisory for the nearshore waters around the tip of the Thumb will remain in effect into tonight when waves dissipate below criteria.

The aforementioned high will move to the east coast by early Sunday, allowing a tightened southwesterly gradient to set up over the Great Lakes. The resultant relatively warm flow will lead to stable over- lake conditions which will generally put a cap on the magnitude of wind, put long southwest fetch over the central basin of Lake Huron may lead to gales Sunday morning into Sunday afternoon. A low pressure system will then move through the central Great Lakes on Monday and usher in a fresh northwest wind by Monday night.

HYDROLOGY .

Stationary front and approaching low pressure system is set to develop across Michigan on Monday which will bring the next potential for an extended period of rainfall. Precipitation totals look to range between .25 to .50 inches at this time, with localized higher amount possible depending on the strength of the stationary front and if any training will take place along the front. Precipitation is expected to fall as all rain Monday, with a possible transition to a wintry mix and eventually snow through early Tuesday, before precipitation moves off to the east.

DTX WATCHES/WARNINGS/ADVISORIES. MI . NONE. Lake Huron . Gale Watch from late Saturday night through Sunday afternoon for LHZ362-363.

Lake St Clair . NONE. Michigan waters of Lake Erie . NONE.

AVIATION . CB DISCUSSION . AM MARINE . TF HYDROLOGY . AM

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
SBLM4 - Saginaw Bay Light #1, MI 18 mi59 min NNW 11 G 15 28°F 1027.1 hPa (+1.4)
GSLM4 - Gravelly Shoals Light MI 35 mi58 min W 11 G 14 26°F
TAWM4 - Tawas City, MI 52 mi79 min N 2.9 G 5.1 22°F 1027.8 hPa

Wind History for Harbor Beach, MI
(wind in knots)    EDIT      (on/off)   Help
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
3
PM
4
PM
5
PM
6
PM
7
PM
8
PM
9
PM
10
PM
11
PM
Last
24hr
S6
S9
S8
G11
S6
S6
SW1
W3
NW9
G13
N21
N16
N19
G23
N16
G22
NW7
G10
NW13
G17
NW11
G18
NW11
G16
NW13
G18
W9
G20
NW12
G17
NW7
G12
NW9
G14
NW9
G15
NW11
G15
NW7
G11
1 day
ago
W9
W10
G15
W8
G11
NW8
G12
NW6
G9
NW8
G13
NW13
G20
NW15
G23
NW11
G17
NW10
G17
NW10
G17
NW12
G16
NW11
G16
NW9
G12
NW7
G12
W7
W5
SW4
SW2
G5
SW3
S4
S4
S6
S4
2 days
ago
W6
G9
SW4
G7
W6
G10
W6
G11
W9
W12
G19
W9
G15
W12
G17
W14
G20
W11
G18
W12
G18
W8
G15
NW8
G12
NW10
G13
NW11
G15
NW12
G17
NW10
G16
NW12
G15
NW11
G16

Airport Reports
    EDIT      (on/off)   Help   Click EDIT to display multiple airports. Follow links for more data.
AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Saginaw County H W Browne Airport, MI10 mi64 minW 310.00 miFair25°F17°F74%1028.4 hPa
MBS International Airport, MI11 mi66 minW 610.00 miFair23°F15°F72%1029.6 hPa
Jack Barstow Airport, MI21 mi64 minN 010.00 miFair19°F17°F93%1028.4 hPa

Link to 5 minute data for KHYX

Wind History from HYX (wind in knots)
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
3
PM
4
PM
5
PM
6
PM
7
PM
8
PM
9
PM
10
PM
11
PM
12
AM
1
AM
Last 24hrS5S3SW5W5NW8NW8NW13
G18
NW12NW10
G17
NW12
G15
NW10NW11
G17
NW12NW13
G20
NW11NW13
G17
NW13
G17
W9NW12W9NW7W6W3W5
1 day agoW10
G15
W12W10
G15
W8W8W7W9W7NW9W8W9W7W7CalmW5SW3CalmCalmSE3SE3SE4SE5S5S5
2 days agoSW8SW10W10W7SW5W9W7W5W7W10W8
G14
W10W8W10W13
G16
W11W11W11W11W11
G17
W11W9W9W10

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    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 (0,6,7,8)
      (on/off)   Help

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

Ad by Google

Cookie Policy:
This webiste uses cookies to save your settings. No personal information is saved. 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. I do not keep site logs longer than I need to to keep bad actors off the site. Basically, I delete them after looking at them. 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 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.