Marine Weather and Tides
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 7:50AM||Sunset 4:23PM||Sunday December 15, 2019 12:25 PM CST (18:25 UTC)||Moonrise 8:05PM||Moonset 11:02AM||Illumination 84%|
7 Day Forecast for Marine Location Near International Falls, MNHourly EDIT Help
Area Discussion for - Duluth, MN  (on/off)  Help NOTE: mouseover dotted underlined text for definition
FXUS63 KDLH 151744 AAD AFDDLH
Area Forecast Discussion . UPDATED National Weather Service Duluth MN 1144 AM CST Sun Dec 15 2019
UPDATE. Issued at 1144 AM CST Sun Dec 15 2019
Update for new 18Z Aviation Discussion below.
UPDATE Issued at 923 AM CST Sun Dec 15 2019
Clouds are on the increase across the area this morning and have beefed up the cloud cover. Added some flurries in north central Wisconsin for a few hours. Made some other minor adjustments.
SHORT TERM. (Today through Monday) Issued at 426 AM CST Sun Dec 15 2019
A ridge of high pressure over northern Minnesota this morning has allowed temperatures to plummet over western portions of the forecast area. Temperatures have fallen to around 25 below in some places so far, and will not be surprised to see a handful of locations approaching 30 below once all the observations come in. Farther east, light north flow has become northwest and become very light, and while there are lake effect clouds along the south shore of Lake Superior, it does not appear that they are getting more than a few light snow showers or flurries under those clouds. While get pressure gradient implies there should be northwest to west flow over the area, most surface observations are west or even southwest, and are generally less than 10 knots. The exception is the north shore, where drainage/katabatic winds have been accelerating winds along the shoreline and out into the lake, with winds gusting over 25 knots at times, as shown on the Grand Marais Harbor AWOS. Both of these wind effects should slowly diminish this morning as the surface ridge axis slowly slides east and allows southwest flow to strengthen over the area this afternoon. The leading edge of this warm air advection is the mid level clouds that have spread into western Minnesota, which should continue to spread east today. With the very cold start that we will have this morning and the increasing cloud cover today, it will remain a cold day with highs only in the single digits. Late this afternoon and evening the models are depicting a surge of warm moist air that moves across the area, some of which are squeezing out some small pops over our western CWA. Where this warm moist surge is this morning is producing some light snow showers over central North Dakota, have decided to maintain some slight chance pops this afternoon and evening over the western CWA, but weakening that as it moves farther east into the dry airmass we will have over the area. A weak cold front moves through the forecast area tonight, which should also bring some chances for snow to the area during the overnight hours, mainly for areas north of the Iron Range. Little to no snow accumulation is expected. The cloud cover will keep temperatures from dropping off like they have tonight, but it will still be cold with lows in the single digits below zero. Monday remains quiet with the weak cold front continuing to slide east over the area and a small high pressure ridge building over the forecast area in the afternoon. Temperatures will moderate, but we are still only looking at highs in the single digits to teens above zero.
LONG TERM. (Monday night through Saturday) Issued at 426 AM CST Sun Dec 15 2019
Quiet conditions will continue to prevail through the extended with no major systems currently expected. There will be a few shots at light snow and lake effect for the South Shore of Lake Superior, but the overall forecast is dry as temperatures warm to near to above normal levels for Thursday into the weekend.
High pressure will pass to our south Monday night as another weak shortwave and surface cold front move out of Canada and through the Northland during the morning hours Tuesday. Models are in a bit better agreement than they were yesterday in bringing some light snow showers to the region, but no accumulations are expected with this wave. However, northwest winds behind the surface cold front will lead to lake effect snow showers, primarily across the Iron County snowbelt for Tuesday into Tuesday night, especially with Arctic air spilling into the region in the wake of the cold front. This may lead to an inch or two of accumulation before ending early Wednesday morning. Very cold temperatures will be in place Wednesday morning as cold Arctic high pressure passes overhead. Lows will be in the teens below zero across Minnesota with slightly warmer readings in northwest Wisconsin.
Northwest flow will persist for Wednesday with another wave skirting through the Borderland Wednesday afternoon into Wednesday night with low chances for light snow. Heading into Thursday, upper ridging begins to move in allowing warmer air to move into the Northland. Overall forecast confidence outside of the warmer temperatures remains lower heading into the weekend as the models are not handling a trough/closed low working through the Mississippi Valley very well. The GFS is the strongest of the models, but keeps most of the affects to the south of our area. Winds ahead of this feature are southerly/southeasterly, so that may lead to some lake effect snows along the North Shore of Lake Superior, but with the warmer temperatures aloft, that reduces the likelihood of this occurring. Temperatures Friday into the weekend will continue to run above normal with perhaps a few spots in northwest Wisconsin possibly reaching the freezing mark by Sunday.
AVIATION. (For the 18Z TAFS through 18Z Monday afternoon) Issued at 1144 AM CST Sun Dec 15 2019
A compact shortwave trough will move across northern Minnesota and over western Lake Superior this afternoon and tonight. Upstream observations suggest a period of light with MVFR ceilings and visibility. Behind the initial period of snow, light snow and flurries may continue off and on for the next several hours. Look for ceilings to remain in the MVFR range for most sites through late tomorrow morning as low-level moisture remains overhead.
MARINE. Issued at 1026 AM CST Sun Dec 15 2019
Winds will back southwesterly over western Lake Superior today and wind speeds will increase as an area of surface high pressure passes to the south and the pressure gradient tightens this afternoon. Sustained winds of 10 to 20 knots are expected and a few gusts to 25 knots are possible tonight, mainly for waters on the northern and northwestern portions of the Bayfield Peninsula. A Small Craft Advisory may be needed. Winds will subside Monday morning.
Attention then shifts to a cold front and a period of strong northwest winds Tuesday and Tuesday night. Winds will start from the west and will veer northwesterly by late Tuesday morning. Wind speeds increase to 10 to 20 knots with gusts 25 to 30 knots possible. The strongest winds will be along the South Shore. The wind speeds will decrease late Tuesday night and winds will back southwesterly by late Wednesday morning.
PRELIMINARY POINT TEMPS/POPS. DLH 7 -1 11 -2 / 10 10 0 10 INL 8 -3 7 -2 / 20 30 0 20 BRD 8 0 11 0 / 20 10 0 0 HYR 9 -1 15 -2 / 10 10 10 0 ASX 11 3 15 2 / 10 10 10 20
DLH WATCHES/WARNINGS/ADVISORIES. WI . None. MN . None. LS . None.
UPDATE . GSF SHORT TERM . LE LONG TERM . BJH AVIATION . Huyck MARINE . Huyck
Weather Reporting StationsEDIT (on/off)  Help NOTE: Click on distance to see the station location on a map
Airport ReportsEDIT (on/off)  Help Click EDIT to display multiple airports. Follow links for more data.
|Falls International Airport, MN||0 mi||31 min||SSE 3||10.00 mi||Overcast||-5°F||-9°F||79%||1018.4 hPa|
Link to 5 minute data for KINL
Wind History from INL (wind in knots)
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|2 days ago||NE||NE||NE||NE||NE||NE||NE||E||E||E||E||E||E||E||E||E||E||E||E||E||E||E||E||E |
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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.
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Other links: Northern Pacific Contential US Full GOES-East
Wind Forecast for Duluth, MN (13,3,4,5)(on/off)  Help
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