Monday, September27, 2021
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Marine Weather and Tides
Altoona, WI

Version 3.4
NOTICE
3/30/2021 -- ANZ330 has been split into ANZ331 and ANZ332. Click EDIT in Marine Forecast and select your new zone.
1/26/2021 -- The West Coast Satellite images havd been updated. They now use GEOS-17.
1/1/2021 -- The 7 day forecast are now working well. Thank you NOAA for your support.

Sunrise 6:58AMSunset 6:55PM Monday September 27, 2021 2:58 AM CDT (07:58 UTC) Moonrise 9:25PMMoonset 12:45PM Illumination 66% Phase: Waning Gibbous; Moon at 21 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 Altoona, WI
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location: 44.78, -91.48     debug


Area Discussion for - Twin Cities, MN
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FXUS63 KMPX 270344 AFDMPX

Area Forecast Discussion National Weather Service Twin Cities/Chanhassen MN 1044 PM CDT Sun Sep 26 2021

SHORT TERM. (This evening through Monday night) Issued at 251 PM CDT Sun Sep 26 2021

Very tranquil next 36 hours expected across the region with plenty of clear skies and warmer than normal temperatures. A weak cold front will drop through the region this evening, having next to no impact other than actually helping clear out skies behind it with its subsidence and slightly drier air. High pressure over Manitoba province will then drop southeast tonight through tomorrow into the Great Lakes, with its western extent sitting over the Upper Midwest through the short-term period. Winds will swing around to NE tomorrow with where the high pressure center settles in, resulting in a slightly cooler flow behind the front but otherwise no effects are expected with clear skies. Highs will drop back to the lower 70s to lower 80s, this after highs today maxed out in the mid 70s to mid 80s. Lows both tonight and tomorrow night will range from the mid 40s to the mid 50s.

LONG TERM. (Tuesday through Sunday) Issued at 251 PM CDT Sun Sep 26 2021

The long term still looks to be dominated by upper level ridging and above normal temperatures. Climatologically, the end of September/early October is the median date for seeing our first freeze of the season, but the EPS continues to show a basically zero chance of seeing sub-freezing temperatures anywhere over the MPX CWA over the next 2 weeks, with our mild fall weather looking to extend into at least the 2nd week of October. Rain chances remain for Wednesday night through next weekend, though spread remains pretty high with how far east this front makes it before washing out and how quickly it gets to that point.

For Tuesday and Wednesday the ridge moves in aloft and surface winds get going out of the south, which will bring in well above normal temperatures. Highs in the 80s will be common area wide both days, with a 90 not out of the question on Tuesday out by Madison and Canby in western MN. By Wednesday afternoon, cloud cover will be increasing in western MN as a front works across the Dakotas, though precip chances really look to hold off in western MN until Wednesday night.

From Wednesday night through next weekend, the front mentioned earlier will be the predominate player in our weather. This front gets going on Tuesday to the lee of the Rockies as a strong shortwave moves through the interior west as it rounds the base of a western NOAM trough. This shortwave heads off to the northwest side of Hudson Bay, so this front will be losing its forcing as it works across the Dakotas and heads toward the Great Lakes upper ridge. The GFS/GEFS continues to be the most aggressive with the progress of this front, bringing it through Wednesday night/Thursday, while the ECMWF is more Friday/Friday night. PoPs didn't change much with this update from the NBM given the timing spread in the models, but pretty much every one of the 51 members of the EPS has precip occurring in the Thursday night through Sunday period, with the highest concentration of members generating precip in the Friday night/Saturday morning period, which matches up with when the ECMWF brings the remnants of the front through the Twin Cities. We'll likely see some higher pops eventually materialize at the end of the week when confidence in timing increases. At the very least, increased cloud cover will knock hows back out of the 80s, but we'll still be above normal.

AVIATION. (For the 06Z TAFS through 06Z Monday night) Issued at 1045 PM CDT Sun Sep 26 2021

Very little change from previous TAF issuance as a weak front moves through Minnesota by morning with a general NE wind at 5 to 10 kts. Winds will shift slightly to the E/SE late in the period.

KMSP .

No other concerns.

/OUTLOOK FOR KMSP/

Tue-Wed . VFR. Wind generally SE less than 10 kt. Thu . Mainly VFR. Chance p.m. MVFR/SHRA/TSRA. Wind variable around 5 kt becoming N/NE 5-10 kt.

MPX WATCHES/WARNINGS/ADVISORIES. MN . None. WI . None.

SHORT TERM . JPC LONG TERM . MPG AVIATION . JLT


Weather Reporting Stations
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Chippewa Valley Regional Airport, WI7 mi63 minN 03.00 miFog/Mist54°F53°F97%1005.7 hPa
Menomonie Municipal Airport-Score Field, WI22 mi64 minN 010.00 mi53°F53°F100%1006.1 hPa

Link to 5 minute data for KEAU

Wind History from EAU (wind in knots)
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Last 24hrW3CalmCalmNE3CalmCalmSW3SW7S5S5S7CalmSW54S4SE3SE5NE3CalmN5NE3CalmCalmCalm
1 day agoSW5SW5SW6SW3S4CalmW4SW8SW9SW5SW8W9
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2 days agoCalmCalmCalmCalmCalmCalmS5SW5NW7N11NW10
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N7NW5W8CalmCalmCalmSW6W8W5W5W5

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NOTE: This section has been updated as of 1/26/2021. If the image you are expecting is not showing, please let me know. You may use the EDIT function to update your location.
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