Wednesday, May24, 2017 L-36.com


Marine Weather and Tides
Rochester, MN

Version 3.4
What's New / NOTES
5/23/2017 - Worked with NOAA again to speed up the 7 day forecast load times. Thanks to them for being responsive.
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.

Sunrise 5:32AMSunset 8:41PM Wednesday May 24, 2017 10:14 PM CDT (03:14 UTC) Moonrise 4:07AMMoonset 6:17PM Illumination 0% Phase: New Moon; Moon at 29 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
    EDIT      (on/off)   Help
7 Day Forecast for Marine Location Near Rochester, MN
   Hourly   EDIT   Help
location: 44.05, -92.49     debug


Area Discussion for - La Crosse, WI
      (on/off)   Help   NOTE: mouseover dotted underlined text for definition
Fxus63 karx 242323
afdarx
area forecast discussion
national weather service la crosse wi
623 pm cdt Wed may 24 2017

Short term (tonight through Thursday night)
issued at 237 pm cdt Wed may 24 2017
pesky closed low that has been responsible for the clouds and
scattered showers over the last couple days now centered over mo per
latest GOES water vapor visible loops rap 500mb analysis. Shower
activity has pretty much shut down and moved south of the area
closer to the low, but still plenty of stratus and perhaps a patch
or two of drizzle to contend with today. Clouds also holding
temperatures back with reading this afternoon in the 50s, or some 20
degrees below our normal highs for today.

For tonight the closed low finally budges east more into the ohio
river valley as a ridge of high pressure builds in from the plains.

Clouds and areas of fog could become problematic tonight. Where
clouds do clear, fog will almost be a certainty late tonight into
Thursday morning. This looks most likely along and west of the
mississippi river closer to the ridge axis. East of the river,
clouds look to hang on overnight limiting the extent of fog. Will
have to keep and eye on how dense this fog becomes along west of the
mississippi overnight into Thursday morning. Otherwise, plan on lows
tonight in the lower and middle 40s.

After some morning fog, mid-level ridge and surface warm air
advection will provide a nice Thursday for the area. Look for highs
topping off in the upper 60s to the lower 70s.

Increasing warm air advection 850-700mb moisture transport ahead of
a mid-level trough moving through the northern plains could produce
some elevated high-based showers across the area Thursday night.

Cape at this point looks very minimal, so will leave thunderstorm
mention out for now. Look for lows in the lower middle 50s.

Long term (Friday through Wednesday)
issued at 237 pm cdt Wed may 24 2017
Friday Friday evening will see a chance of showers storms as a weak
mid-level trough surface cold front pushes east across the area. Nam
builds a corridor of 1000-2000 j kg across eastern mn northwest wi
along the front but rapidly diminishes it with loss of heating
toward evening as it moves into our area. Therefore, severe threat
looks minimal at this time. Otherwise, temperatures pre-frontally
expected warm into the upper 60s to middle 70s.

A weak east west frontal boundary hangs up across central southern
sections of the forecast area Saturday with weak mid-level
frontogenesis and incoming weak pv-advection. For this reason, will
carry a slight chance of showers in the morning and 20-40 pops in
the afternoon with daytime heating. Still warm though with highs
expected to be in the 70s.

For Sunday into memorial day... Models in good agreement on dropping
a mid-level trough through the region from canada. This will bring a
chance of showers and afternoon early evening thunderstorms given
steepening lapse rates.

Tuesday looks like a return to cooler showery weather a cyclonic
flow takes hold across the region. Plan on highs in the lower middle
60s.

Latest ECMWF gfs showing some differences for Wednesday with the gfs
building a ridge into the area while ec maintains cooler cyclonic
flow and continued showers. Consensus has the day dry for now with
highs in the mid-upper 60s.

Aviation (for the 00z tafs through 00z Thursday evening)
issued at 623 pm cdt Wed may 24 2017
satellite imagery late this afternoon shows lots of clouds
covering a good share of the area, but there are some breaks in
the overcast. The concern becomes will the clouds or the breaks
win out overnight. A weak ridge of high pressure extends from
northeast minnesota into eastern nebraska with the clouds
extending into and through the ridge axis over minnesota. This
ridge axis is expected to slide east and extend from northwest
wisconsin into northern missouri by 25.12z. The 24.18z NAM is
pretty pessimistic on the clouds remaining overnight as it keeps
the low level moisture high but looking at the forecast soundings,
it does thin out the moisture depth. The 24.21z rap is more
optimistic and suggest it will clear out overnight. For now, have
maintained forecast continuity and gone with the clearing
overnight, but have also hedged toward the NAM and not dropped the
sky coverage nearly as much as the previous forecast. This will
all have a big impact on whether or how much fog will form
overnight. If it does clear out, with all the moisture and light
winds, would expect to see fog form with ifr conditions for both
airports. Without the clearing, any fog would be minimal but
ceilings could come back down to MVFR. Again, have maintained
forecast continuity with fog forming and ifr conditions
developing. Expect this will burn off not long after sunrise
Thursday withVFR conditions the rest of the day.

Hydrology
Issued at 237 pm cdt Wed may 24 2017
recent heavy rainfall will continue to cause minor flooding along
portions of the mississippi river and also the trempealeau river at
dodge this week into early next week. Be sure to monitor river
levels closely if you have any plans or interests along these rivers.

You can access this information on our website at weather.Gov arx.

Arx watches warnings advisories
Wi... None.

Mn... None.

Ia... None.

Short term... Das
long term... .Das
aviation... 04
hydrology... .Das


Weather Reporting Stations
   EDIT       (on/off)   Help   NOTE: Click on distance to see the station location on a map

Airport Reports
    EDIT      (on/off)   Help   Click EDIT to display multiple airports
AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Rochester, Rochester International Airport, MN10 mi81 minNNE 510.00 miOvercast55°F48°F77%1006.3 hPa
Dodge Center Airport, MN18 mi2 hrsNNE 410.00 miOvercast57°F46°F67%1005.4 hPa

Wind History from RST (wind in knots)
11
PM
12
AM
1
AM
2
AM
3
AM
4
AM
5
AM
6
AM
7
AM
8
AM
9
AM
10
AM
11
AM
12
PM
1
PM
2
PM
3
PM
4
PM
5
PM
6
PM
7
PM
8
PM
9
PM
10
PM
Last 24hrN10N13N12N10N11N10N10N10N9N11N11N10N10N10
G17
N12NE10NE9N9N8NE9N7N5N5E4
1 day agoN3N8NW9N7NW10N11N6NW7NW6NW7NW7NW6N5N9N11N8N10N10N10N12N11N9N10N17
G24
2 days agoW11W12SW12W10SW9SW8SW7S7S5SW9SW10W10W6W6SW8W9W8W5W6W8N7N6NW8SW10

Tide / Current Tables for
   EDIT   RT Ports Option   Weekend mode (on/off)   (on/off)   Help
Tide / Current Tables for
   EDIT      (on/off)   Help
Weather Map and Satellite Images
       (on/off)   Help
Weather Map
wmap_A
IR Satellite Image from GEOS
east_satellite

GOES Local Image of Midwest    EDIT
Geos

Wind Forecast for La Crosse, WI (23,6,7,8)
      (on/off)   Help

Ground Weather Radar Station La Crosse, WI
   (on/off)   Help
weather_mapweather_map weather_map

Ad by Google

Disclaimer:
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 L-36.com. 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 L-36.com 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.