Friday, September25, 2020
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Marine Weather and Tides
Portland, ND

Version 3.4
NOTICE
8/26/2020 The 7 day forecast is taking about 5 seconds to load but it will eventually load. NOAA is still working on it.
8/18/2020 NOAA continues to have trouble. Wind guest will occasionally be left off graphs. I am working with NOAA to resolve the issue.
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 7:18AMSunset 7:20PM Friday September 25, 2020 8:28 AM CDT (13:28 UTC) Moonrise 3:56PMMoonset 12:00AM Illumination 58% Phase: Waxing Gibbous; Moon at 8 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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7 Day Forecast for Marine Location Near Portland, ND
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location: 47.5, -97.37     debug


Area Discussion for - Grand Forks, ND
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FXUS63 KFGF 251159 AFDFGF

Area Forecast Discussion National Weather Service Grand Forks ND 659 AM CDT Fri Sep 25 2020

UPDATE. Issued at 654 AM CDT Fri Sep 25 2020

Forecast on track. Area of showers expanded as expected as 500 mb shortwave moving thru southern ND. A few t-storms developed in NW MN about 09z just east of Grand Forks thru TVF to Baudette. A few lightning strikes remain west of Bemidji so did have mention of isold t-storms in NW MN. Overall moisture will continue to move northeast with an eastward trend as frontal boundary moves eastward. Still looks like clearing and warm for this aftn in E ND/RRV.

SHORT TERM. (Today through Saturday) Issued at 332 AM CDT Fri Sep 25 2020

Main 500 mb low is in northern Saskatchewan. One bit stronger short wave moved thru NW ND into southern Manitoba Thu evening generating a few t-storms. That has moved into NW Ontario. The weak frontal boundary is moving into the Devils Lake basin and not much there for precipitation. A second 500 mb wave appears to be in SE Montana and this will move thru southern ND this morning reaching western MN this aftn. An area of light rain showers with this has been expanding in the Bismarck area and will move NE thru the morning and thus look for chances for showers to increase this morning over NE ND and NW MN with highest chances midday in north central MN. Skies will clear out from the west during the day, except in the far east which will stay cloudy. West winds today 10-20 kts today with a few higher gusts in E ND. No cooling behind the front and with favorable west wind look for highs to rise a bit above Thursday levels and reach 75-80 in the RRV.

Skies mainly clear tonight with increasing clouds late ahead of next short wave which will spread showers across most areas Saturday, highest chances in the north. Rain amounts do look light perhaps up to 0.25 inch in parts of NW MN.

LONG TERM. (Saturday night through Thursday) Issued at 332 AM CDT Fri Sep 25 2020

A notable shift towards cooler temperatures along with increased winds and periodic light precip chances highlights the forecast Saturday night into late next week. While not anticipated at this time, ensemble guidance is teasing at the possibility of seeing some non-impactful flurries in portions of the CWA late next week.

The upper level flow will continue to greatly amplify through next week with a deepening upper trough near the Hudson Bay-Great Lakes region coupled with large upper ridge building over western North America. Ensemble guidance suggests the Northern Plains will fall under the influence of the trough's backside. A projected tight gradient in geopotential heights aloft behind the trough, persistent north to northwesterly flow, and the likelihood of continued cold air advection point towards an extended period of breezy north to northwesterly winds throughout next week. The increased signal in wind is also supported by upper percentiles in mean wind speed from the NAEFS as well as lower percentiles in V component of the wind (suggesting northerly flow aloft). This combined with a anomalous signal of below normal temperatures should make for some brisk days ahead. While there is some variability in the temperature forecast beyond mid week, the general trend is towards cooler temps with highs generally in the 50s and lows in the 40s to 30s, with a chance of near or below freezing temps beyond Wednesday next week during the overnight periods.

With the deepening broad upper trough, one or more shortwave troughs and associated cold fronts moving through northwest flow will bring periodic chances for precip. At this time confidence in timing of these shortwaves/fronts is low. Should one move through the region during the overnight hours late next week when coldest temps aloft are expected to be nearest to the region, there will be a non-zero chance for light rain to transition to flurries. Given the anticipated light nature of precip and surface temps expected to be well above freezing, no impact is expected from this very conditional and uncertain possibility. Thus have left this mention out of any products besides this AFD.

AVIATION. (For the 12Z TAFS through 12Z Saturday morning) Issued at 654 AM CDT Fri Sep 25 2020

Stubborn IFR cigs around Bemidji and not certain when they will give way . but idea is they will lift mid morning as winds turn a bit more south-southwest vs southeast. Otherwise VFR cloud bases with clouds in the 8k to 15k ft range agl. West winds 10-20 kts in E ND and less wind in MN and more southwest.

FGF WATCHES/WARNINGS/ADVISORIES. ND . None. MN . None.

UPDATE . Riddle SHORT TERM . Riddle LONG TERM . CJ AVIATION . Riddle


Weather Reporting Stations
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Grand Forks, Grand Forks International Airport, ND33 mi35 minSE 139.00 miLight Rain59°F55°F90%1001.7 hPa

Link to 5 minute data for KGFK

Wind History from GFK (wind in knots)
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Last 24hrNW5CalmSE4S5S6SE7S9SE11S12SE11SE11SE10SE15SE16S17
G23
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1 day agoN8N12N19
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NE15NE10N11N13N10NE7N8N7N6N6N5N7NW4NW7W3N3
2 days agoCalmS5S9S12S10SW12
G20
SW10S10SW8S9S8S7S6S6S9S6S7S5NW6NW4N8NW7N8NW6

Tide / Current Tables for
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Tide / Current Tables for
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Weather Map
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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
Ground Weather Radar Station Fargo, ND
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