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Marine Weather and Tides
Version 3.4 |
6/25/2017 - NOAA is having a major issue that impact the 7 day forecast load times. Many users are reporting problems. The issue has been reported. 5/23/2017 - Worked with NOAA again to speed up the 7 day forecast load times. Thanks to them for being responsive. 5/19/2016 - There were issues with the 3 day airport observation history. I switched to another data source. Let me know if you see any issues with the data feeds. |
| Sunrise 6:50AM | Sunset 8:56PM | Thursday August 17, 2017 7:36 AM EDT (11:36 UTC) | Moonrise 1:16AM | Moonset 4:40PM | Illumination 23% |  |
Marine Forecasts
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This is a Weather Statement Zone, please check the Date to see if it has expired LSZ249 749 Pm Edt Wed Aug 9 2017 .strong Thunderstorms over the waters... The areas affected include... Lake superior east of a line from manitou island to marquette mi and west of a line from grand marais mi to the us/canadian border beyond 5nm from shore... Marquette to munising mi... Munising to grand marais mi... At 748 pm edt...doppler radar indicated strong Thunderstorms... Capable of producing winds to around 30 knots and small hail. These Thunderstorms were located along a line extending from 12 nm north of granite island to 18 nm north of grand island to near miners castle...moving east at 25 knots. Precautionary/preparedness actions... Mariners can expect gusty winds to around 30 knots...small hail... Locally higher waves...and lightning strikes. Boaters should seek safe harbor immediately until these storms pass. && lat...lon 4662 8619 4653 8642 4642 8657 4639 8666 4668 8704 4671 8731 4699 8738 4715 8644 4664 8598 |
This is a Weather Statement Zone, please check the Date to see if it has expired LSZ249 Expires:201708100045;;136191 FZUS73 KMQT 092349 MWSMQT MARINE WEATHER STATEMENT NATIONAL WEATHER SERVICE MARQUETTE MI 749 PM EDT WED AUG 9 2017 LSZ249-250-266-100045- |
7 Day Forecast for Marine Location Near Munising, MI
Hourly EDIT Helplocation: 46.38, -86.71 debug
Area Discussion for - Marquette, MI
(on/off) Help NOTE: mouseover dotted underlined text for definition| Fxus63 kmqt 170905 afdmqt area forecast discussion national weather service marquette mi 505 am edt Thu aug 17 2017 Short term (today and tonight) issued at 501 am edt Thu aug 17 2017 wv imagery and rap analysis indicated a vigorous mid upper level low over SRN mn. At the surface, a 998mb low was located near msp with a warm front extending into SE wi. A shortwave ahead of the low supported a band of showers from WRN lake superior through west and srn portions of the cwa. Today, radar trends and short range high res models suggest that the initial rain band will move into the ern CWA and NRN keweenaw by 12z with only isold sct lighter showers over the rest of the area for most of the morning. However, expect rain coverage to increase during the afternoon with daytime heating and the approach of the mid level low that should track into WRN upper michigan. Forecast mlcape to around 1k j kg will also be enough to support thunderstorms. The main threat will be for heavy rainfall, especially central, of several inches with any stronger slow moving shra tsra clusters as pwat values climb into the 1.50-2.00 inch range. Even though 0-6km shear will be weak, with the strong vorticity center moving into the area there may be a slight potential for a brief weak funnel tornado similar to what occurred over SRN mn Wednesday afternoon and evening. Tonight, as the mid level low lifts to the northeast, the heavier shra tsra will diminish by late evening. Additional lighter wrap- around rain drizzlle will develop over the northwest half especially where upslope nnw flow lift is strongest. The gusty southeast winds ahead of the low will result in high waves and high swim risk for the beaches of schoolcraft county today where a beach hazards statement is in effect. Long term (Friday through Wednesday) issued at 413 am edt Thu aug 17 2017 a fairly progressive pattern will prevail over the next 7 days. Very well-defined shortwave currently lifting toward the upper great lakes will reach quebec new england on sun. Meanwhile, the next trof which arrives over western canada Fri will reach central canada early next week and will then be in the hudson bay to great lakes region on tue. Longer range guidance is in quite good agreement that the pattern should then slow down become much more amplified across canada again as sharp ridging rebuilds over central canada by late next week. This will result in the trof over the hudson bay to great lakes region on Tue amplifying over eastern N america during the last half of the week. These large scale changes will lead to cool conditions over the next couple of days as approaching trof crosses the area. Temps will then swing above normal over the weekend ahead of approaching cold front tied to the trof reaching central canada. As that trof then GOES on to amplify over eastern N america, temps will fall back, and there will probably be at least a couple of days of blo normal temps during the last half of next week. As for pcpn, wet period today into Fri associated with passing trof will give way to a dry weekend for most of the fcst area. The next potential of a more widespread pcpn event should arrive Mon into early Tue in association with the cold front tied to the trof progressing from central canada to the great lakes region and hudson bay. Drier weather will return late Tue thru thu, but the amplifying trof over eastern N america raises some concern for diurnally driven isold sct convection as summertime NW flow over the area is notorious for that kind of activity. Beginning fri, sfc low pres will be exiting to the E of lake superior upper mi during the morning. Wrap around upslope enhanced shra affecting much of the area early in the morning, except the s central, will end from W to E during the day into the evening. It will be a breezy day behind the rather vigorous low pres system for aug. NW winds will likely be gusting frequently into the 15-25mph |
range from the keweenaw to central and eastern upper mi. Gusts up to 30 mph will be possible along the lakeshore over N central and ne upper mi. These blustery winds will lead to large waves and a high swim risk for the lake superior beaches of marquette and alger counties on fri. However, it won't be a day to go to the beach due to clouds shra and temps struggling to get out of the lower 60s over the N central and NE fcst area where shra cloud cover will be most persistent. Not out of the question that a few locations will fail to get above 60f if shra clouds persist thru the daylight hrs. Over the W and SW fcst area, temps may reach 70f, aided by some breaks in the cloud cover during the aftn. Trailing shortwave dropping into the departing trof late Fri night will probably prevent skies from completely clearing out. Could even be a few sprinkles over the w late Fri night. Although potential is very low, passage of the trailing shortwave on sat may lead to isold -shra or a few sprinkles. Otherwise, expect a partly cloudy, warmer day with temps rebounding back to normal or even slightly above normal Sat aftn. Trof moving across western canada Fri will evolve into a broad mid- level low over central canada on sun. Shortwave swinging around the s and SE side of the low will push associated cold front toward the upper lakes late in the day, and it may spark a few shra tsra over the w. Ahead of the front, expect a warm day Sun with highs in the 80s, except E along lake michigan. As the mid level low W of hudson bay drifts e, a shortwave will amplify troffing into the great lakes by tue. This additional energy should support an increase in shra tsra coverage along frontal boundary and across upper mi for mon, perhaps lingering into tue. Dry weather should mostly follow for Wed thu. However, NW flow in addition to the potential of shortwaves to drop SE across area could generate mainly diurnally driven isold sct convection. Aviation (for the 06z tafs through 06z Friday morning) issued at 122 am edt Thu aug 17 2017 vfr conditions are expected at all sites into early morning. A shield of shra will spread northeastward across all sites overnight through Thursday, resulting in deteriorating conditions at all sites. Conditions will drop to lifr vlifr at all sites on Thu and this will last into Thu evening. Marine (for the 4 am lake superior forecast issuance) issued at 501 am edt Thu aug 17 2017 easterly winds will increase today across central and eastern lake superior as low pressure lifts from mn to the upper great lakes. Some gale gusts to 35 knots will be possible across eastern lake superior from late morning into the afternoon. The winds will become nw on Friday as the low departs to the east, with 20-30 knots expected for the east half. Lighter winds, mostly under 20 knots, are expected over the weekend into early next week with high pressure over the region. Mqt watches warnings advisories Upper michigan... beach hazards statement through this evening for miz014. Lake superior... none. Lake michigan... none. Short term... Jlb long term... Rolfson aviation... 07 marine... Jlb |
Weather Reporting Stations
EDIT (on/off) Help NOTE: Click on distance to see the station location on a map| Stations | Dist | Age | Wind | Air Temp | Water Temp | Waves | Pressure | DewPt |
| KP53 | 4 mi | 41 min | SE 9.9 G 21 | 64°F | 1006.8 hPa | 64°F | ||
| 45173 | 15 mi | 97 min | SSE 21 | 58°F | 63°F | 2 ft | 1006.5 hPa (-2.6) | |
| MCGM4 - 9099018 - Marquette C.G., MI | 37 mi | 49 min | E 1 G 1.9 | 61°F | 1005.6 hPa | 59°F | ||
| GR4 - Grand Marais, MI | 44 mi | 57 min | SSE 16 G 20 | 66°F | 1009.8 hPa | |||
| GRIM4 | 44 mi | 37 min | E 9.9 G 11 | 63°F | 1006.5 hPa (-2.4) | 63°F | ||
| 45171 | 44 mi | 97 min | E 7.8 | 59°F | 63°F | 2 ft | 1006.4 hPa (-2.2) | |
| FPTM4 - Fairport, MI | 53 mi | 57 min | SE 20 G 25 | 67°F | 1006.1 hPa |
Wind History for Marquette C.G., MI
(wind in knots) EDIT (on/off) Help| 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 | 2 AM | 3 AM | 4 AM | 5 AM | 6 AM | 7 AM | |
| Last 24hr | W | -- | S | SE | E | E | E | E | E | E G11 | E | E G7 | N | -- | NW | NW | -- | N | SW | -- | N | -- | S | SW |
| 1 day ago | NW G5 | NW G6 | NW G8 | N G13 | N G8 | N G10 | NW G11 | N G12 | N G11 | N G6 | N G5 | NW | N | NW | -- | NW | NW | NW | -- | W | W | W | SW | W |
| 2 days ago | SE | S | N | N | N | N | N | N G7 | N G8 | N | N | NW | NW | NW | W | SW | -- | W | SW | SW | -- | W | NW G4 | W G5 |
Airport Reports
EDIT (on/off) Help Click EDIT to display multiple airports| Airport | Dist | Age | Wind kt | Visibility | Sky/Weather | Temp | DewPt | Humidity | Pressure |
| Munising - Munising Lakeshore Observation, MI | 4 mi | 1.7 hrs | SE 10 | mi | 65°F | 63°F | 93% | 1008 hPa | |
Wind History from P53 (wind in knots)
| 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 | 2 AM | 3 AM | 4 AM | 5 AM | 6 AM | 7 AM | |
| Last 24hr | S | S | Calm | S | N | NE | NE | NE | NE | NE | NE | Calm | Calm | S | S | S | SE | S G15 | S | S | SE G17 | SE | SE G21 | |
| 1 day ago | Calm | NW | NW | NW | NW | NW | NW | NW | NW | NW | NW | NW | NW | NW | Calm | W | N | S | S | S | S | S | S | S |
| 2 days ago | S | S | S | S | S | SW | W | Calm | N | NE | NE | N | NW | N | Calm | Calm | Calm | N | Calm | N | Calm | S | S |
Tide / Current Tables for
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Wind Forecast for Marquette, MI (7,2,3,4)
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Ground Weather Radar Station Marquette, 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 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. |