Wednesday, February24, 2021
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Marine Weather and Tides
White Pine, MI

Version 3.4
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1/26/2021 -- The West Coast Satellite images havd been updated. They now use GEOS-17.
1/1/2021 -- The 7 day forecast are now working well. Thank you NOAA for your support.

Sunrise 6:54AMSunset 5:48PM Wednesday February 24, 2021 11:01 AM CST (17:01 UTC) Moonrise 2:25PMMoonset 5:42AM Illumination 95% Phase: Waxing Gibbous; Moon at 13 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
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LSZ241 Expires:202009260100;;365077 FZUS73 KMQT 260051 MWSMQT Marine Weather Statement National Weather Service Marquette MI 851 PM EDT Fri Sep 25 2020 LSZ241-242-263-260100-


7 Day Forecast for Marine Location Near White Pine, MI
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location: 46.86, -90     debug


Area Discussion for - Marquette, MI
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FXUS63 KMQT 241104 AFDMQT

Area Forecast Discussion National Weather Service Marquette MI 604 AM EST Wed Feb 24 2021

SHORT TERM. (Today and tonight) Issued at 241 AM EST WED FEB 24 2021

RAP analysis and GOES show a shrtwv trof across central MN as a compact sfc low shifts NE through WI ahead of this wave. As models have predicted the last few runs, ongoing -SN across a decent portion of the CWA is ongoing after being delay several hours due to antecedent dry layers in the column. Area webcams show snow is starting to accumulate on the roadways, but an overall lack of webcams where the heaviest snow is occuring makes it a little tougher to keep tabs on the trends. KMQT shows a solid fgen band of pcpn through central Menominee County, but a bit hard to tell if this is falling as rain or snow and where the transition may be (Hermansville webcam appears to have just transitioned over to snow). ESC and IMT show -SN at the airports with MNM showing -RA as well as on the Door Peninsula. Up north at ISQ, -SN is being seen.

As the previous update described, the decrease in amts was warranted and still appears to be on track. I think the bigger impact to snowfall amts would be the SLRs, did take about 10-20% off all of them based on the smaller snowflake size observed here at the office and upstream SLR obs near 11:1, but impact wise I think the ongoing advy will be fine. Have yet to see any pcpn move into the Keweenaw, and it may not make it into Keweenaw county, or even Houghton. I trended amts a little downward across the northern half of the cwa as well through this morning based on trends, with the tricky part remaining in the south half and along Lk Michigan. Models keep the fgen band going down there for some time, so could still 3 to 5 inches total accums along this band.

Pcpn should still come to an end early on this morning from west to east and probably be done with around sunrise or sooner at IWD. Could still see some enhancement off Lk Superior with model 850mb temps near -7 to -8C, but it's marginal at best and shouldn't make much of an impact besides clouds lingering a little while.Slight rise in heights and a subtle hint of subsidence in GOES WV imagery upstream suggest some locations across the west half could see some afternoon sunshine as well. With some CAA and pres rises behind this low, it does look to get briefly gusty along Superior and in the central and east after lunch sometime. Winds shouldn't last too long or get too out of hand, though.

Heights rise some more into tonight with some clearing expected from west to east. Models do show another weak wave approaching with some CAA and 850mb temps falling to around -12 to -13C, which will look to bring a smaller chance at some light LES and clouds late tonight across the far west. I think midlevel clouds start to return tonight before boundary layer completely decouples, so didn't go too low for temps tonight, but around 10 seems reasonable.

LONG TERM. (Thursday through Tuesday) Issued at 215 AM EST WED FEB 24 2021

Upper air pattern consists of a 500 mb trough in the Pacific NW and another over the desert sw and a broad trough in the upper Great Lakes 12z Thu. The Pacific NW trough moves into the northern Rockies 12z Fri and into the northern plains and upper Great Lakes Fri night. Weak shortwave moves through on Thu and will have some lingering pops for this before bringing in some pops again later Fir night. Overall, did not make too many changes to the going forecast.

In the extended, the GFS and ECMWF show a 500 mb trough in the Rockies 12z Sat with a shortwave affecting the upper Great Lakes 12z Sat. More upper troughing will move into central Canada and into the northern plains 12z Sun before this trough drops into the lower Great Lakes 12z Mon and into New England 12z Tue. Another shortwave trough drops into the upper Great Lakes on Wed. Above normal temperatures will cool to below normal on Monday with a brief cold air intrusion, and then temperatures will go back above normal towards the end of this forecast period.

AVIATION. (For the 12Z TAFS through 12Z Thursday morning) Issued at 603 AM EST WED FEB 24 2021

An area of low pressure is east over Lk Michigan this morning as snow is begining to wind down from west to east. Low level moisture and some upslope conditions have brought pockets of LIFR conditions at all terminals this morning, but most have remained in IFR. Expect this trend to continue for the next couple hours this morning before improving conditions move in late this morning. IFR conditions will linger the longest at SAW as norhterly winds upslope into the terminal off Lk Superior. NNW wind will become gusty to around 25kt at KCMX/KSAW today.

MARINE. (For the 4 AM Lake Superior forecast issuance) Issued at 241 AM EST WED FEB 24 2021

Behind a sfc low moving through WI this morning, northwest winds increase with some CAA to around 30 knots across the central and east. Could see some gales to 35 knots with this colder air push, but not expecting them to persist for too long. Heights rise a little tonight as winds back westerly and relax to around 20 knots across the east and lower in the west. Southerly increase to 30 knots again on Friday. A few gale force gusts may also be possible. The wind then dies down to 25 knots out of the northwest on Saturday.

MQT WATCHES/WARNINGS/ADVISORIES. Upper Michigan . Winter Weather Advisory until 11 AM EST this morning for MIZ005>007-013-014-085.

Winter Weather Advisory until 7 AM EST /6 AM CST/ this morning for MIZ002-004-009-010-084.

Winter Weather Advisory until 9 AM CST this morning for MIZ011- 012.

Lake Superior . None. Lake Michigan . None.

SHORT TERM . JAW LONG TERM . 07 AVIATION . JAW MARINE . JAW


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
SXHW3 - Saxon Harbor, WI 31 mi21 min N 12 G 15 31°F 1014.6 hPa
OTNM4 - Ontonagon, MI 36 mi61 min ENE 9.9 G 13 29°F 1012.9 hPa (+3.8)
DISW3 - Devils Island, WI 41 mi61 min NNW 12 G 15 30°F 1015.4 hPa (+3.6)20°F

Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Ironwood, Gogebic-Iron County Airport, MI23 mi65 minNNW 1110.00 miOvercast29°F25°F85%1014.6 hPa

Link to 5 minute data for KIWD

Wind History from IWD (wind in knots)
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Last 24hrW11NW10
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NW10NW7NW7NW6N3CalmCalmCalmCalmCalmCalmCalmCalmCalmN3N7N5N3N7N106N11
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S6S7S3SE6SE5S9SE5E4SE63S3SW3CalmS5SW6SW5SW7SW8SW84S8SW9SW9

Tide / Current Tables for
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Tide / Current Tables for
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NOTE: This section has been updated as of 1/26/2021. If the image you are expecting is not showing, please let me know. You may use the EDIT function to update your location.
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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.