Tuesday, January21, 2020
Privacy Policy
L-36.com


Marine Weather and Tides
Ypsilanti, 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 7:55AMSunset 5:34PM Tuesday January 21, 2020 12:27 PM EST (17:27 UTC) Moonrise 5:13AMMoonset 2:42PM Illumination 13% Phase: Waning Crescent; Moon at 26 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
LCZ423 /o.exp.kdtx.ma.w.0066.000000t0000z-191230t1215z/ 714 Am Est Mon Dec 30 2019
.the special marine warning will expire at 715 am est... The affected areas were... Detroit river... Michigan waters of lake erie... The wind shift has moved out of the warned area. Lat...lon 4173 8349 4180 8350 4195 8337 4197 8328 4223 8319 4234 8310 4237 8299 4235 8294 4232 8306 4224 8313 4212 8312 4203 8315 4196 8311 4172 8341 time...mot...loc 1214z 232deg 43kt 4292 8284 4267 8247 4234 8204
LCZ423 Expires:201912301224;;155656 FZUS73 KDTX 301214 MWSDTX Marine Weather Statement National Weather Service Detroit/Pontiac MI 714 AM EST Mon Dec 30 2019 LCZ423-LEZ444-301224-


7 Day Forecast for Marine Location Near Ypsilanti, MI
   Hourly   EDIT   Help
location: 42.3, -83.54     debug


Area Discussion for - Detroit/Pontiac, MI
      (on/off)   Help   NOTE: mouseover dotted underlined text for definition
FXUS63 KDTX 211102 AFDDTX

Area Forecast Discussion National Weather Service Detroit/Pontiac MI 602 AM EST Tue Jan 21 2020

AVIATION.

A weak low-level wind field will gain a little strength this morning before backing slowly to the west. Expect the MVFR stratus deck to hold for an hour or two beyond daybreak before temporarily scattering out for the early afternoon hours. Recent soundings have increased confidence in bringing MVFR cigs back again this evening as shallow lake effect moisture advects more efficiently into the airspace off the coast of western lower Michigan. Coverage may be somewhat variable, but confidence is high enough to include prevailing MVFR mention at all terminals for the latter portion of the day. Chance for additional MVFR cigs returns for the overnight period.

For DTW . Low stratus deck will scatter-out mid-morning. Additional low stratus development becoming more probable again this evening.

DTW THRESHOLD PROBABILITIES .

* High for ceilings below 5000 ft this morning, then moderate for this evening.

PREV DISCUSSION. Issued at 257 AM EST Tue Jan 21 2020

DISCUSSION .

Another chilly day can be expected today as return southwest flow around high pressure centered to the south remains weak. While warm air advection will continue, the process will be rather slow today. In addition, low level temperatures look to be just cold enough, at least during the first part of the day, to maintain some moisture flux from Lake Michigan. This will slow the overall drying of low levels that will occur as very dry synoptic scale air mass works in the from the west. All told, would expect high temperatures to stall in the upper 20s to around 30 this afternoon with a gradual trend form mostly cloudy to party cloudy skies.

On Wednesday, upper ridging builds into the area between shortwave digging well south of the area and the next upper trough organizing over the central CONUS. Between the upper ridge and large surface high pressure centered to the south, anticipate a fair amount of sunshine. With this sunshine and a steadier south to southwest flow around the surface high, temperatures should moderate fairly well. That said, extensive snow cover, with a rather high albedo, should limit the warmup with high temperatures likely stalling in the mid 30s.

The upper ridge will shift east of the area and flatten out on the northern periphery as shortwave energy tracks across Ontario and clips the far northern Great Lakes. This feature will force a low level boundary south into the northern Great Lakes back southwest into the upper midwest (basically around the northwest edge of the ridging over the eastern CONUS by that time frame). This will bring at least a small chance of rain/snow showers to parts of the area by late Thursday/Thursday night, and even for locations that remain dry, expect extensive cloud cover. This will maintain temperatures in the mid/upper 30s despite the moderation in the overall air mass in place.

The aforementioned upper trough over the central CONUS evolves into an upper low pressure system late Thursday into Friday as Pacific shortwave energy rounds western NOAM upper ridging and digs into the plains. This system translates eastward through the southern Ohio Valley Friday into Saturday. ECMWF has remained far enough north to impact the area with deformation from this system with other 00z models also continuing to support this scenario. While the system is not tied into the northern stream, residual cold air does settle south through the region late this weak as the stalled frontal boundary positioned just northwest of the region washes out with time.

This will make for an interesting precipitation type scenario as both rain/snow will be possible. That said, trends suggest that a fair amount of the precipitation will fall as wet snow, and with a slightly faster start time late Friday into Friday night, diurnal considerations would support a better chance of some accumulations. This will be aided by the at least modest precipitation rates that look more likely now that model consensus suggests the area of deformation will impact the region for a fairly extended period from Friday evening into Saturday morning.

With the northern stream still largely cutoff from the region, not much cold air settles in behind this system as it exits to the east Saturday night. So, temperatures basically remain unchanged from the weekend into early next week as highs average in the mid/upper 30s and lows dip into the 20s to around 30. Precipitation, if any, will be very transient beyond Saturday/Saturday night as only weak shortwave energy is expected to clip the area once the shortwave ridge in the immediate wake of the Friday/Saturday system settles southeast of the region.

MARINE .

A broad surface high pressure system will continue to fill in across the Ohio Valley today, with a moderate pressure gradient building in across Lake Huron in response to the advancing high pressure. Gusts on the order of 20 to 25 knots to hold across Lake Huron, mainly northern and central zones, as winds back to southwest. Gusts around 25 knots to hold across Lake Huron late Tuesday through Wednesday as the moderate pressure gradient fails to budge through the midweek period. No active weather in the forecast until at earliest Wednesday night.

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

AVIATION . KK DISCUSSION . DG MARINE . DG

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 37 mi28 min WSW 8.9 G 12 24°F 1035.2 hPa (-0.4)
THLO1 - Toledo Light No. 2 OH 38 mi148 min W 12 G 14 22°F
THRO1 - 9063085 - Toledo, OH 42 mi58 min 24°F 1036.2 hPa11°F
TWCO1 44 mi28 min W 8.9 G 11

Wind History for Toledo, OH
(wind in knots)    EDIT      (on/off)   Help
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
2
AM
3
AM
4
AM
5
AM
6
AM
7
AM
8
AM
9
AM
10
AM
11
AM
12
PM
Last
24hr
NW4
G8
NW7
G11
NW5
G9
N4
G7
NW4
NW5
G8
NW5
NW8
G11
NW4
NW3
NW4
N3
W2
NW3
W3
NW4
W2
W6
NW6
NW4
G7
NW3
NW7
G10
NW5
G8
W6
G9
1 day
ago
W13
G20
W15
G20
W14
G19
W11
G16
W9
G14
W9
G12
W8
G13
W7
W6
W4
W5
W6
NW7
W5
NW6
G9
NW6
W4
NW5
NW4
NW4
G7
NW4
G7
NW6
G9
NW7
NW6
G9
2 days
ago
S16
G21
SW16
G25
SW13
G21
W15
G24
W18
G30
W20
G29
W18
G27
W11
G22
W19
G31
W13
G22
W20
G31
W17
G23
W15
G26
W20
G25
W15
G21
W13
G20
W15
G23
W15
G24
W10
G18
W12
G23
W13
G20
W16
G22
W14
G23
W12
G18

Airport Reports
    EDIT      (on/off)   Help   Click EDIT to display multiple airports. Follow links for more data.
AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Detroit, Willow Run Airport, MI5 mi35 minWSW 810.00 miFair25°F12°F60%1035.9 hPa
Ann Arbor, Ann Arbor Municipal Airport, MI12 mi35 minWSW 610.00 miFair23°F12°F63%1036.1 hPa
Detroit, Detroit Metropolitan Wayne County Airport, MI12 mi35 minWSW 910.00 miPartly Cloudy25°F12°F60%1036.3 hPa
Detroit/Grosse Ile, Grosse Ile Airport, MI24 mi33 minWSW 610.00 miFair25°F12°F60%1035.2 hPa

Link to 5 minute data for KYIP

Wind History from YIP (wind in knots)
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
2
AM
3
AM
4
AM
5
AM
6
AM
7
AM
8
AM
9
AM
10
AM
11
AM
12
PM
Last 24hrN7N6NW9NW6NW7NW8NW9N5CalmS3S3CalmW3NW5NW7N6NW8NW6W8W6SW6W8W7SW8
1 day agoW15W11W9W11N11NW8NW6NW6NW6NW7NW7NW8NW8NW9NW8N6NW9N9NW6NW8N8N8N8NW6
2 days agoS16
G21
SW17
G25
SW15SW17
G26
W22
G31
W21
G31
--W17
G24
SW13W17
G27
W25
G36
W27
G37
W23
G30
W21
G31
W18
G29
W19
G31
W19
G28
W19
G26
W18
G26
W15W12W16
G22
W17
G23
W16

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 (12,3,4,5)
      (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.