Marine Weather and Tides
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 7:22AM||Sunset 4:55PM||Tuesday January 19, 2021 12:02 PM CST (18:02 UTC)||Moonrise 11:04AM||Moonset 11:53PM||Illumination 38%|
7 Day Forecast for Marine Location Near Spring Green, WIHourly EDIT Help
Area Discussion for - Milwaukee/Sullivan, WI  (on/off)  Help NOTE: mouseover dotted underlined text for definition
FXUS63 KMKX 191459 AFDMKX
Area Forecast Discussion National Weather Service Milwaukee/Sullivan WI 859 AM CST Tue Jan 19 2021
UPDATE. (Issued 859 AM CST Tue Jan 19 2021)
Light snow is expected to move into the area from the west around mid day, pushing east through the afternoon. Have increased snow amounts slightly for areas southwest of Madison based on the latest hi-res guidance. There will likely be a couple of bands of heavier snow (relatively speaking) across this area, and around an inch of accumulation is expected. Elsewhere, amounts should be less than 1 inch.
SHORT TERM. (Issued 348 AM CST Tue Jan 19 2021)
Today through Wednesday Night:
A swath of weak reflectivity extending from central WI down into central IA is pushing east early this morning. Seeing a few stations in the Dells and Lone Rock areas reporting light snow at times. So it is not out the question to see a few flakes fly through the morning further east as this swath pushes across the area.
Otherwise, the main concern today will be the mid-level shortwave trough digging across the Upper Midwest. This is bringing a weak surface low across the eastern Dakotas this morning and as it progresses southeastward into southern MN/northern IA through the morning it is expected to weaken further into a surface trough later this afternoon. Nevertheless, this clipper is progged to bring some light snow chances to portions of southern WI this afternoon and linger into the early evening. Not expecting much in the way of snowfall accumulations, but amounts should generally remain below an inch. However, use caution if traveling this afternoon as even a little bit of snow on untreated roads can cause slick road conditions.
The light snow is expected to tapper off through the evening as the wave exits the region, but stronger CAA on the backside of the system will bring in a frigid, arctic airmass this evening/tonight. Overnight temps look to fall into the single digits inland and the low teens for areas closer to the lake front while even colder wind chills around 0 degrees F are expected.
These cold conditions will not last long as southwesterly winds and a WAA regimes setups across the region on Wednesday ahead of strong low that is progged to work its way across central Canada and the northern Great Lakes Region. Looking at temps to climb back into the upper 20s to low 30s. However, it will be breezy as the pressure gradient increases across the Upper Midwest and a 40-50+ knot low level jets moves over WI. As this low, which will remain to our north, pushes east it is expected to drag a cold front across WI overnight Wednesday and bring westerly winds across WI.
LONG TERM. (Issued 348 AM CST Tue Jan 19 2021)
Thursday through Monday:
Strong low pressure will move from Ontario to New England for Thu-Fri. Brisk wly flow on Thu will veer to nwly with the dry cold frontal passage. High temps will fall from the 30s on Thu to the upper teens and lower 20s for Fri. Polar high pressure around 1030 mb will then shift ewd across srn WI late Fri nt-Sat AM. Good radiational cooling conditions will lower temps to near zero degrees well inland. Another cold day will follow on Sat.
Much uncertainty for Sat nt-Mon due to a split jet stream flow and whether or not any phasing will occur. Overall, warm, moist advection will develop with increasing chances for light snow into Sun and possibly continuing into Mon.
AVIATION. (Issued 859 AM CST Tue Jan 19 2021)
MVFR ceilings will return to the entire area by late morning, with light snow developing this afternoon. Janesville and Kenosha will be most affected by the snow, though light amounts are still expected at Madison, Waukesha, and Milwaukee. Ceilings and visibility should generally remain MVFR during the snow, though brief visibility drops to IFR are possible. Snow will end from west to east this evening.
Winds through the day and into tonight will be from the west, shifting to the southwest tomorrow morning.
MARINE. (Issued 348 AM CST Tue Jan 19 2021)
Westerly winds persist today as high pressure builds to the south of Lake Michigan and a weakening surface wave tracks across southern MN/northern IA. Winds then shift to the southwest into Wednesday as a stronger low works its way across central Canada. This system will bring a 40-50+ knot low-level jet over the region and windier conditions across our waters. Still have some uncertainty with whether we could tap into the higher winds and mix them down, but it likely will be enough to bring gale conditions across the open waters of Lake Michigan Wednesday afternoon and evening. Thus, a Gale Watch remains in effect for this time. However, winds across the nearshore waters should remain below gale and will need a Small Craft Advisory. Then a cold front will push across the Lake and gusty west to northwest winds will develop Wednesday night and continue through Friday.
MKX WATCHES/WARNINGS/ADVISORIES. WI . None. LM . Gale Watch . LMZ080-LMZ261-LMZ362-LMZ364-LMZ366-LMZ563-LMZ565- LMZ567-LMZ669-LMZ671-LMZ673-LMZ675-LMZ777-LMZ779-LMZ868- LMZ870-LMZ872-LMZ874-LMZ876-LMZ878 . 3 PM Wednesday to midnight Thursday.
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Weather Reporting StationsEDIT (on/off)  Help NOTE: Click on distance to see the station location on a map
Airport ReportsEDIT (on/off)  Help Click EDIT to display multiple airports. Follow links for more data.
|Lone Rock Tri-County Regional Airport, WI||11 mi||67 min||W 5||10.00 mi||Overcast||27°F||21°F||78%||1020.5 hPa|
|Iowa County Airport, WI||21 mi||68 min||WSW 6||10.00 mi||Partly Cloudy||28°F||21°F||74%||1019.3 hPa|
Link to 5 minute data for KLNR
Wind History from LNR (wind in knots)
|1 day ago||NW||NW||N||W||W||W||W||W||W||W||NW||W||W||W||W||W||W||W||W||W||W||W||NW||W|
|2 days ago||NW||NW||NW||NW||W||W||NW||NW||NW||NW||NW||W||W||W||W||W||NW||N||N||NW||N||N||Calm||W |
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GEOS Local Image of EDIT
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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