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 8:12AM||Sunset 4:48PM||Monday December 16, 2019 3:47 AM CST (09:47 UTC)||Moonrise 9:51PM||Moonset 11:58AM||Illumination 78%|
7 Day Forecast for Marine Location Near Cleveland, NDHourly EDIT Help
Area Discussion for - Bismarck, ND  (on/off)  Help NOTE: mouseover dotted underlined text for definition
FXUS63 KBIS 160937 AFDBIS
Area Forecast Discussion National Weather Service Bismarck ND 337 AM CST Mon Dec 16 2019
SHORT TERM. (Today through Tuesday) Issued at 337 AM CST Mon Dec 16 2019
A northwest flow pattern continues for the short term period. A deepening shortwave trough currently over the Northwest Territories of Canada will drop into Manitoba today, with an attendant surface low moving from northern Saskatchewan into central Manitoba. This will place western and central North Dakota in the warm sector of this system. However, cloud cover may keep high temperatures similar to yesterday, mainly from the upper teens east to upper 20s southwest. Some light snow or flurries may develop along the 850 mb warm front as it moves across the area this morning, with better chances near the Turtle Mountains. Very little to no accumulation is expected.
As the northern shortwave moves into western Ontario Tuesday night, a tightening gradient of the mid level height field will strengthen a baroclinic zone extending from southeast Saskatchewan into northern North Dakota. Several models produce a narrow band of light snow along this baroclinic zone and propagate it southeast into the James River Valley through Tuesday morning. Forcing for ascent may initially be aided by a 700 mb impulse and later on, an approaching upper level jet streak. While this event does not have the appearance of anything to be much concerned about, there is potential for some enhanced snowfall rates given the presence of strong lift in a deep DGZ, frontogenesis, and EPV nearing zero, signaling potential CSI.
A cold Arctic air mass will plunge into the Red River Valley on Tuesday, giving our area a glancing blow. Temperatures will struggle to make it above 10 F east of Highway 83 and north of Interstate 94 during the day Tuesday, and the Turtle Mountains may stay below zero. It will be much warmer farther west, with the far southwest corner of the state seeing highs near 30.
LONG TERM. (Tuesday night through Sunday) Issued at 337 AM CST Mon Dec 16 2019
On Tuesday night, Arctic high pressure is forecast to slide from the Red River Valley into central Minnesota. Eastern portions of our forecast area may see temperatures fall near -10 F early Tuesday night before warm air advection kicks in. It does not appear wind chills will reach headline criteria.
A long period of warm and dry weather under upper level ridging is favored Wednesday through the upcoming weekend. Both the deterministic GFS and ECMWF briefly flatten the ridge by bringing a shortwave across the Northern Plains on Thursday, but the atmospheric moisture profile appears far too dry to allow any precipitation to from with this system. GEFS plumes favor 850 mb temperatures above freezing through much of this time period. Surface temperatures will be dependent on cloud cover and snow depth, but could see widespread highs in the 30s and 40s for the weekend.
AVIATION. (For the 06Z TAFS through 06Z Monday night) Issued at 337 AM CST Mon Dec 16 2019
UPDATE . No longer expecting fog to develop across southwest and south central ND due to persistent VFR clouds streaming over the area. While there are some patches of MVFR clouds in the vicinity, think that KBIS and KDIK will remain at VFR now.
PREVIOUS DISCUSSION . MVFR stratus is beginning to clear across northern and western ND. Expect to see it continue through much of the night at KBIS and KJMS. The clearing stratus may allow fog to develop overnight. The greatest potential for visibility reductions from fog is at KDIK overnight, shifting east towards KBIS by sunrise Monday morning. Winds will generally be from the west at 5 to 10 knots overnight, increasing to 10 to 15 knots Monday afternoon.
BIS WATCHES/WARNINGS/ADVISORIES. NONE.
SHORT TERM . Hollan LONG TERM . Hollan AVIATION . Hollan
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|Jamestown, Jamestown Municipal Airport, ND||23 mi||1.9 hrs||NNW 12||10.00 mi||Overcast||18°F||12°F||81%||1018.6 hPa|
Link to 5 minute data for KJMS
Wind History from JMS (wind in knots)
|1 day ago||NW||NW||NW||NW||NW||NW||NW||N||N||NW||N||NW||N||N||Calm||Calm||Calm||S||S||SE||S||S||S||S|
|2 days ago||SE||SE||S||S||S||SE||S||Calm||NW||NW|
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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.
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Wind Forecast for Bismarck, ND (4,6,7,8)(on/off)  Help
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