Marine Weather and Tides
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 6:07AM||Sunset 9:58PM||Sunday July 12, 2020 4:09 PM EDT (20:09 UTC)||Moonrise 12:30AM||Moonset 1:01PM||Illumination 51%|
7 Day Forecast for Marine Location Near Grand Marais city, MNHourly EDIT Help
Area Discussion for - Duluth, MN  (on/off)  Help NOTE: mouseover dotted underlined text for definition
FXUS63 KDLH 121745 AFDDLH
Area Forecast Discussion National Weather Service Duluth MN 1245 PM CDT Sun Jul 12 2020
SHORT TERM. (Today through Monday) Issued at 442 AM CDT Sun Jul 12 2020
Today will be another lovely day for outdoor activities with a weak ridge of high pressure over the area with light winds. A field of diurnal cumulus should develop for the afternoon hours. A few models develop some afternoon showers along the lake breeze boundary along the North Shore, but the low level airmass is relatively dry, and am not terribly convinced these showers will develop and have left them out of the forecast for this afternoon. Tonight will also be quiet with southerly flow increasing as the high pressure ridge slides off to the east.
Monday and Monday night a cold front will advance toward the area. Ahead of it, a surge of warm moist air will move in from the south, pooling ahead of the cold front, setting up afternoon CAPE values over western MN of over 1500j/kg and westerly bulk shear values of 35-40 knots. A shortwave moving through the southwesterly flow aloft across the Dakotas will intersect with the cold front Monday afternoon over eastern North Dakota, and we should see convective initiation during the late afternoon along the MN/ND border region. Some of these storms will be strong to severe, especially during the afternoon and evening hours. Later on during the overnight hours the storms should weaken, but is still a fairly big question mark if they weaken before or after the storms move into the CWA. The Storm Prediction Center has placed the western CWA into a Slight Risk. By the time the storms move in, they should have formed into a linear mode, which should bring damaging winds and large hail threats. I have slowed down pops as they move into the forecast area as compared to previous forecasts, and we will have to see what further adjustments are needed in the coming forecast runs.
LONG TERM. (Monday night through Saturday) Issued at 442 AM CDT Sun Jul 12 2020
Tuesday the showers and thunderstorms continue east across northwest Wisconsin. Instability is expected to decline, as well as the severe weather threat, as the cold front moves into Wisconsin. Once the front moves through, the Northland will stay under the influence of the upper level trough on Wednesday as it deepens and could bring another round of showers and thunderstorms. Disagreement in the global model suite indicates uncertainty in the coverage and placement of the showers.
Early Thursday, the trough should move east and by Thursday afternoon, another trough should make its way to our area from North Dakota, along with chances of showers and thunderstorms. The trough should move east and out of our CWA by late Friday morning.
In the evening on Friday, yet another trough should follow the first. More showers and thunderstorms will be possible across the Northland into Saturday early afternoon as it moves east. But wait, we're not done yet! Another upper level trough is expected to follow, with another round of showers and thunderstorms Sunday night into Monday.
AVIATION. (For the 18Z TAFS through 18Z Monday afternoon) Issued at 1245 pm CDT Sun Jul 12 2020
High pressure centered over northern Minnesota this afternoon will slowly drift toward northern Lower Michigan by 18Z Monday. Look for areas of VFR ceilings and light winds through today. A few sprinkles are possible, mainly over the Arrowhead. Visibility may dip to 4 or 5 miles in showers. Given the isolated coverage, have kept any mention out of the TAF for now. Will amend if showers develop. Patchy areas of fog possible once again tonight, mainly at HYR, HIB, and BRD. Winds will turn from the south on Monday and wind speeds will increase to around 10 knots.
MARINE. Issued at 1019 AM CDT Sun Jul 12 2020
High pressure centered over northern Minnesota will keep conditions quiet over western Lake Superior today through Monday. Winds will be variable in direction this morning turning southerly this afternoon at 3 to 8 knots. An area of low pressure will develop in the western Dakotas Monday and will push northeastward into Ontario by midday Tuesday. The low will be accompanied by a cold front which will touch off thunderstorms in the Dakotas Monday afternoon. The storms will move eastward over Lake Superior Monday night and early Tuesday morning. Winds over the lake will be from the northeast ahead of the front Monday at 5 to 15 knots. The storms will bring a potential for large hail, gusty winds, and torrential rainfall.
PRELIMINARY POINT TEMPS/POPS. DLH 78 57 80 62 / 10 10 10 90 INL 80 58 83 58 / 10 10 20 90 BRD 81 60 84 64 / 0 0 20 90 HYR 79 55 84 65 / 10 10 0 90 ASX 79 56 85 64 / 10 10 0 80
DLH WATCHES/WARNINGS/ADVISORIES. WI . None. MN . None. LS . None.
SHORT TERM . LE LONG TERM . LE/Kossen AVIATION . Huyck MARINE . Huyck
Weather Reporting StationsEDIT (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|
|KGNA||26 mi||134 min||WSW 6||61°F||1014.3 hPa||57°F|
|GD5 - 9099090 - Grand Marais, MN||26 mi||52 min||68°F||49°F||64°F|
|ROAM4 - Rock of Ages, MI||30 mi||70 min||WSW 11 G 11||62°F||1016 hPa (-0.8)|
|DISW3 - Devils Island, WI||71 mi||70 min||W 5.1 G 8||68°F||1015 hPa (-1.0)||61°F|
Airport ReportsEDIT (on/off)  Help Click EDIT to display multiple airports. Follow links for more data.
|Grand Marais/Cook County Airport, MN||27 mi||75 min||N 5||10.00 mi||Partly Cloudy||73°F||51°F||47%||1015.2 hPa|
Link to 5 minute data for KCKC
Wind History from CKC (wind in knots)
|1 day ago||W||W||NW||NW||NW||Calm||Calm||Calm||W||Calm||Calm||Calm||Calm||Calm||Calm||Calm||Calm||Calm||NW||NW||NW||NW||NW||NW|
|2 days ago||W||W||SW||S||SW||S||Calm||SW||Calm||Calm||Calm||Calm||Calm||Calm||Calm||NW||W||W||W||NW||W|
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GEOS Local Image of GreatLakes 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 Duluth, MN (16,3,4,5)(on/off)  Help
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