Saturday, May30, 2020
Privacy Policy
L-36.com


Marine Weather and Tides
Copper Harbor, 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 5:17AMSunset 9:13PM Saturday May 30, 2020 8:31 PM EDT (00:31 UTC) Moonrise 11:59AMMoonset 2:34AM Illumination 64% 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
    EDIT      (on/off)   Help


7 Day Forecast for Marine Location Near Copper Harbor, MI
   Hourly   EDIT   Help
location: 63.03, -82.89     debug


Area Discussion for - Marquette, MI
      (on/off)   Help   NOTE: mouseover dotted underlined text for definition
FXUS63 KMQT 302346 AFDMQT

Area Forecast Discussion National Weather Service Marquette MI 746 PM EDT Sat May 30 2020

SHORT TERM. (This evening through Sunday) Issued at 342 PM EDT SAT MAY 30 2020

Still a bit chilly for the end of May across Upper Michigan this afternoon as colder air aloft and morning CAA has allowed plenty of low-level clouds across the region. RAP analysis and soundings earlier this morning actually showed a very small amt of CAPE with the low-level CAA and steep lapse rates. This aided the early morning -SHRA given the relatively shallow saturation. As rising heights, increasing 850mb temps, and sfc high pressure continue across Upper Michigan, skies will continue to clear into this afternoon. Expecting temperatures to increase this afternoon slightly under increasing sunshine, but should remain generally in the 50s with low 60s across the south.

With sfc high pressure tonight and generally lighter winds expected tonight, opted to issue a frost advisory across much of the CWA. Model guidance was a little separated with deterministic and BC guidance suggesting a little warmer lows than MOS and adjusted MOS guidance. Looking upstream and running backwards HYSPLITs suggest our airmass tonight will be similar to that over Dryden, Ontario (CYHD) last night. The winds last night there remained near 5kts or so with a little more clouds than were expecting here tonight. Their lows fell to around 34F last night which brings the best chances for frost tonight across much of the interior, away from the Great Lakes.

By tomorrow, high pressure will be over Upper Michigan with mostly sunny skies expected. There may be some clouds across the far east in the morning on the edge of an exiting shortwave and mid-level ridge shifting east. Model soundings backed off slightly on deeper mixing tomorrow, with mixing up to 5k-6kft. With this, raised the Tds only slightly from the going forecast, but still on track to bring minimum RH values into the mid 20s tomorrow across the interior. High temperatures will be generally in the 60s with low 70s across the west and south.

LONG TERM. (Sunday night through Saturday) Issued at 339 PM EDT SAT MAY 30 2020

Models suggest that the high amplitude pattern with a ridge from the Southern Plains to northwest Canada and a trough through Quebec and the mid Atlantic will become more zonal through much of next week as the ridge expands through the southern CONUS. Models then indicate the pattern will become amplified again next weekend as a deep trough digs into the West Coast, inducing a broad amplified downstream ridge across much of the central CONUS. Temps will climb above average next week and likely remain that way into next weekend.

Beginning Sun night, high pressure over the western Great Lakes will continue the dry conditions over the area. The approach of a shortwave rounding the Plains ridge and the WAA/isentropic ascent response ahead of it should result in increasing mid-high clouds from the west after midnight. The increasing clouds combined with increased low-level mixing should keep min temps from dropping off too much. Expect readings generally in the 40s.

Mon-Tue, models generally in good agreement showing thickening clouds and increasing rain chances in association with the northern Plains shortwave moving through the area, especially Mon afternoon into the Mon evening, supported by strengthening WAA and moisture transport. Elevated instability should generally remain farther to the south and west, but could be enough elevated CAPE (near 400 j/kg) to support isolated thunderstorms near the Wi border. Most places should see overall rainfall amounts in the 0.10-0.25 inch range, although amounts up to 0.50 could be possible south with any t-storms that occur. Increasing clouds will help keep max temps in the upper 60s and lower 70s Mon. Much warmer air will move in Tue with drier conditions as 850 mb temps climb to 14C-17C supporting inland temps into the mid and upper 80s west and the mid 70s east.

Wed-Sat, confidence is lower given model differences and variability in handling any additional shortwaves moving through the area. Right now it looks like a shortwave moving through the area could bring shower and possibly t-storm chances on Wed with another shortwave bringing in another round of showers late Thu into Fri time frame. At some point next weekend, most likely late Sat into Sun, the deterministic GFS and ECMWF advertise a more vigorous shortwave rounding the Plains ridge into the Upper Great Lakes resulting in a strengthening WAA southerly flow and increasing moisture return and instability to support showers/t-storms into the area.

AVIATION. (For the 00Z TAFS through 00Z Sunday evening) Issued at 744 PM EDT SAT MAY 30 2020

SKC will roll into Upper Michigan over the next few hours as high pressure and dryer low levels continue to work their way into the region. Gusty winds blo 20 knots have ended for today, although they will return again tomorrow. VFR conditions will last at all TAF sites through the TAF period.

MARINE. (For the 4 AM Lake Superior forecast issuance) Issued at 148 PM EDT SAT MAY 30 2020

Northwest winds will back more to the west by this evening as high pressure moves over Upper Michigan. This high pressure will then linger over the lake for Sunday bringing west to southwest winds over the lake. A warm front on Monday evening may bring gusts up to 25 knots from the south across the east half of Lake Superior, otherwise winds are expected to remain blo 25 knots through the rest of the forecast period.

MQT WATCHES/WARNINGS/ADVISORIES. Upper Michigan . Frost Advisory from midnight EDT /11 PM CDT/ tonight to 9 AM EDT /8 AM CDT/ Sunday for MIZ002-004>007-009>014-084-085.

Lake Superior . None. Lake Michigan . None.

SHORT TERM . JAW LONG TERM . Voss AVIATION . TAP MARINE . JAW


Weather Reporting Stations
   EDIT       (on/off)   Help   NOTE: Click on distance to see the station location on a map

Airport Reports
    EDIT      (on/off)   Help   Click EDIT to display multiple airports. Follow links for more data.
Click EDIT to select an airport
Tide / Current Tables for Coral Harbour, Southampton Island, Nunavut
   EDIT   Weekend mode (on/off)   (on/off)   Help   One Week of Data
Coral Harbour
Click for Map
Sat -- 12:21 AM EDT     1.32 meters Low Tide
Sat -- 03:31 AM EDT     Sunrise
Sat -- 03:39 AM EDT     Moonset
Sat -- 06:00 AM EDT     2.79 meters High Tide
Sat -- 12:52 PM EDT     1.16 meters Low Tide
Sat -- 12:55 PM EDT     Moonrise
Sat -- 07:20 PM EDT     2.76 meters High Tide
Sat -- 11:30 PM EDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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
1.31.41.622.42.72.82.72.62.321.51.21.21.31.622.42.72.82.72.62.31.9

Tide / Current Tables for Coral Harbour, Southampton Island, Nunavut (2)
   EDIT      (on/off)   Help   One Week of Data
Coral Harbour
Click for Map
Sat -- 01:08 AM EDT     1.37 meters Low Tide
Sat -- 03:31 AM EDT     Sunrise
Sat -- 03:40 AM EDT     Moonset
Sat -- 06:47 AM EDT     2.97 meters High Tide
Sat -- 12:56 PM EDT     Moonrise
Sat -- 01:41 PM EDT     0.93 meters Low Tide
Sat -- 07:25 PM EDT     2.82 meters High Tide
Sat -- 11:31 PM EDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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
1.51.41.51.82.22.62.932.82.52.11.71.310.91.21.62.12.52.82.82.62.42

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 Marquette, MI (20,4,5,8)
      (on/off)   Help

Ground Weather Radar Station Marquette, 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.