Monday, March27, 2017

Marine Weather and Tides
Northfield, MN

Version 3.4
What's New / NOTES
5/19/2016 - There were issues with the 3 day airport observation history. I switched to another data source. Let me know if you see any issues with the data feeds.
3/12/2015 - Added section for Gulf current for users in the GMZ marine zones.
This was requested by a user. If you have requests, please let me know.

Sunrise 6:59AMSunset 7:36PM Monday March 27, 2017 9:40 AM CDT (14:40 UTC) Moonrise 6:02AMMoonset 6:15PM Illumination 0% Phase: New Moon; Moon at 0 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 Northfield, MN
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location: 44.46, -93.17     debug

Area Discussion for - Twin Cities, MN
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Fxus63 kmpx 271200
area forecast discussion
national weather service twin cities/chanhassen mn
700 am cdt Mon mar 27 2017

Short term (today and tonight)
issued at 335 am cdt Mon mar 27 2017
a rather convoluted pattern across the region early this morning.

The upper level low that was south of us yesterday morning at
this time is now over the western great lakes. The band of
precipitation that we had on the backside of the low, to the west
and north of the twin cities, is now a narrow band from northeast
of the twin cities through northwest wi. The precipitation will
move off slowly to the east this morning in concert with the upper
low. Therefore, had to include a small area of likely pops for a
time early this morning as a result. A ridge of high pressure over
the dakotas will work into the western fa during the afternoon
and then cover the region tonight. Some sunshine will develop
across central and northwest areas of mn today. The south and east
will be hard pressed to see much sunshine due to a second strong
short wave/upper low over the central/southern plains that is
moving rather briskly to the ene. This is going to aid in keep the
low ceilings stuck over the eastern and southern fa until

Highs today will be warmest in the NW fa and coldest in the SE fa
due to the cloud and low level thermal pattern. Went with
highs in the mid to upper 50s across west central and portions of
central mn where 925 mb temperatures are progged to reach 10 c. This
setup in the nd on Sunday with some sunshine yielded highs around
60. Highs in the middle 40s to lower 50s were used to the east and

Low tonight are expected to drop off into the mid/upper 20s across
central mn and west central wi with high pressure overhead at
daybreak Tuesday. Lows in the lower to middle 30s are common to the
south and west. Still concerned about the fog potential tonight.

Hydrolapse data is pretty vertical until right before sunrise when
there is a little increase in specific humidity in the 100-200 foot
level. Hence, indicated some fog development in the 09z-12z

Long term (Tuesday through Sunday)
issued at 335 am cdt Mon mar 27 2017
longer term trends continue the overall model differences in
handling the overall split flow upper level flow pattern and the
ejection of the closed low to the south in the wed-thu night

We start out with plenty of sunshine and highs in 50s for Tuesday.

Mix down did bring some upper 50s over the mn portion of the cwa.

The next cutoff circulation over the southern stream will move
east into the mississippi river valley by Wednesday. There is some
interaction with the northern stream trough which does tend to
phase some with the southern circulation. This should at least
lift some clouds into the region during the day Wednesday... Along
with a small chance of light rain over the southern cwa. We will
hold onto chance pops for now. The low ejects to the
east/northeast Wednesday night as both the GFS and ECMWF drop
another strong trough into the west then. This should spread light
rain into far southern mn and perhaps northeast toward eau claire
during through Thursday. We did mention some likely pops over the
southernmost tier of counties. Colder air filters into the
region... And there could be at least a rain/snow mix as the
precipitation moves east into Thursday morning. Expect a lot of
cloud cover as the system moves through... Mainly to the south.

This will limit temperatures some with lower and mid 40s common to
the southeast. The GFS is furtherest south with the rain
threat... With both the ECMWF and canadian models drawing some
moisture into the southern metro during this period.

This system pulls east Friday... And we should see more sunshine
lingering through at least Saturday. The northern stream brings a
weak front into the area sometime Sunday. Moisture is limited
however... And we will retain a slight chance for this feature for
now. Temperatures will warm through the 50s over the entire
region for the weekend... With the above normal temperature trend
continuing into early april.

Aviation (for the 12z tafs through 12z Tuesday morning)
issued at 700 am cdt Mon mar 27 2017
the back edge of MVFR ceilings are just to the north of krwf,
kmsp and krnh at TAF issuance. They are drifting to the SE near 8
knots and should clear the aforementioned terminals in the 15z-16z
period. MainlyVFR conditions cover central mn although some
patchy MVFR or lower visibilities in br/fg exist. A pesky band of
light rain and drizzle still persists from the east side of the
twin cities through krnh to krcx. This band is finally showing
signs of breaking down and only vcsh was used at keau this
morning. This terminal will also be the last to becomeVFR during
the afternoon. High pressure will cover the terminals tonight.

The main concern is whether or not there will be widespread br/fg
development during the late night hours. The vertical hydrolapse
is not very supportive at this time and later forecasts will need
to fine tune the potential. Light nne winds through the period.

Kmsp... Stayed conservative with ceilings becomingVFR by 16z. This
could occur up to an hour earlier. Any drizzle is now SE of the

/outlook for kmsp/
wed...VFR. Chc -ra late. Wind ese at 7-10kts.

Thu...VFR. Chc -ra. Wind E at 8-10kts.

Fri...VFR. Wind NE 4-8kts.

Mpx watches/warnings/advisories
Wi... None.

Mn... None.

Short term... Rah
long term... Dwe
aviation... Rah

Weather Reporting Stations
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Stanton Airfield, MN8 mi47 minN 510.00 miOvercast38°F36°F93%1014.2 hPa
Faribault, Faribault Municipal Airport, MN11 mi47 minN 67.00 miOvercast37°F37°F100%1014.6 hPa
Minneapolis, Airlake Airport, MN13 mi49 minN 410.00 miOvercast37°F37°F100%1014.6 hPa
Owatonna Degner Regional Airport, MN24 mi47 minN 54.00 miFog/Mist37°F35°F93%1013.9 hPa

Wind History from SYN (wind in knots)
Last 24hrNE7NE5NE6NE5N7NW5N5N4N4N4CalmN4CalmN3N3CalmCalmN3NW3CalmN5N4N5N5
1 day agoNE13
2 days agoN8N8N12N13N9NE10N11N15

Tide / Current Tables for
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Weather Map and Satellite Images
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Weather Map
IR Satellite Image from GEOS

GOES Local Image of Midwest    EDIT

Wind Forecast for Twin Cities, MN (10,2,3,4)
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Ground Weather Radar Station Minneapolis, MN
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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 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 numerious of sources and is presented automatically. It is not checked for accuracy either by anyone at 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.