Marine Weather and Tides
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 5:19AM||Sunset 8:27PM||Saturday May 30, 2020 2:37 AM CDT (07:37 UTC)||Moonrise 1:09PM||Moonset 2:06AM||Illumination 57%|
7 Day Forecast for Marine Location Near Lake Koshkonong, WIHourly EDIT Help
Area Discussion for - Milwaukee/Sullivan, WI  (on/off)  Help NOTE: mouseover dotted underlined text for definition
FXUS63 KMKX 300432 AFDMKX
Area Forecast Discussion National Weather Service Milwaukee/Sullivan WI 1132 PM CDT Fri May 29 2020
UPDATE. No change to ongoing forecast at this point.
AVIATION(06Z TAFS). Expect a period of sct-bkn lower VFR clouds to spread back into southern WI late tonight into Saturday morning. The clouds should thin later in the day as subsidence increases and the main thermal trof shifts east.
PREV DISCUSSION. (Issued 927 PM CDT Fri May 29 2020)
UPDATE . Lingering clouds continue to gradually thin and dissipate with first surge of low level cold air advection. However still expect some increase in clouds later tonight into Saturday morning due to reinforcing push of low level cold air. Temperatures at this point look on track for overnight.
MARINE . A few wind gusts to 25 knots are possible over far northern Lake Michigan overnight closer to a weak cool front in southern Canada just north of the Great Lakes. The winds will settle down to mostly 10 to 20 knots across the north, and 5 to 15 knots elsewhere overnight. A weakening pressure gradient ahead of approaching high pressure will result in a lake breeze developing later Saturday morning and afternoon.
PREV DISCUSSION . (Issued 601 PM CDT Fri May 29 2020)
UPDATE . Clouds may be a little slow to totally clear across the area this evening as last vestiges of first surge of cold air advection remains across the area before turning more neutral late this evening. Still thinking at a period of clearing will occur but may see an increase in clouds again later tonight or early Saturday as secondary push of low level cold air advection moves across the region, before subsidence and drier air takes over for the afternoon.
AVIATION(00Z TAFS) . VFR conditions expected for this forecast period. Lower VFR clouds should clear for a period overnight, but may return late tonight into Saturday morning as a secondary push of low level cold air moves across the region. The clouds should clear in increasing subsidence and drier air Saturday afternoon and/or evening.
PREV DISCUSSION . (Issued 246 PM CDT Fri May 29 2020)
SHORT TERM .
Tonight through Saturday Night . Forecast Confidence is Moderate .
A broad area of stratocumulus clouds have spread over southern Wisconsin owing to ascent driven by an upper level shortwave and mid-level moisture. In association with these features, sprinkles and light rain showers remain possible toward central and east- central Wisconsin this afternoon and early this evening. We should see some clearing overnight as high pressure builds in from the east. This clearing should remain in place for much of southern Wisconsin during the day tomorrow, save for areas near the lakeshore, where short-range models seem to agree that remnants of the slow-moving shortwave may spark off another round of stratocu and sprinkles/light rain during the late morning and early afternoon hours.
Skies will then clear for all going into Saturday night as high pressure will be firmly in place overhead.
LONG TERM .
Sunday through Friday . Forecast Confidence: Low to Medium.
Upper level high pressure will begin to build across the central CONUS Monday as the surface high pressure shift eastward out of the midwest. Despite the upper level high pressure, showers and thunderstorms will be possible Monday as a warm front moves through Wisconsin. A brief period of dry and warm weather is expected Tuesday. By mid-week, the front may try to move back through Wisconsin as a cold front. There are a series of shortwaves that are moving along the northern edge of the upper level ridge. This type of scenario introduces quite a bit of uncertainty in regards to temperatures and precipitation potential for southern Wisconsin. This is causing the surface front to move back and forth across the region through the end of the week.
AVIATION(18Z TAFS) .
Widespread stratocu remains in place for all terminals, causing MVFR cigs. These clouds will linger for the rest of the afternoon before rising to VFR this evening. A stray sprinkle/light shower remains possible this afternoon. Skies begin to clear overnight and remain clear through tomorrow, save for lakeshore terminals, where stratocu and sprinkles/light showers may redevelop for a brief period during the late morning and early afternoon hours, causing a return to MVFR cigs.
Winds will remain out of the NW at 5-10 kts through tonight and into the first half of tomorrow before becoming more NE-erly during the afternoon hours. Winds gusts to 15 to 20 kts will die down tonight and then return tomorrow afternoon. Waves will remain at 2 feet and below.
MKX WATCHES/WARNINGS/ADVISORIES. WI . None. LM . None.
Update . mbK Tonight/Saturday and Aviation/Marine . mbK Saturday Night through Friday . Patterson
Weather Reporting StationsEDIT (on/off)  Help NOTE: Click on distance to see the station location on a map
|Stations||Dist||Age||Wind||Air Temp||Water Temp||Waves||Pressure||DewPt|
|MLWW3 - Milwaukee, WI||56 mi||28 min||NNW 13 G 14||59°F|
|KNSW3 - Kenosha, WI||63 mi||38 min||WNW 7 G 8.9||57°F||1019.3 hPa (+0.3)|
|PWAW3 - Port Washington, WI||66 mi||58 min||NNW 2.9 G 5.1||58°F||1020.7 hPa|
Airport ReportsEDIT (on/off)  Help Click EDIT to display multiple airports. Follow links for more data.
|Janesville-Rock County, WI||19 mi||63 min||N 0||10.00 mi||Fair||50°F||50°F||100%||1020.7 hPa|
|Watertown, WI||22 mi||43 min||N 0||10.00 mi||Fair||50°F||49°F||98%||1020 hPa|
Link to 5 minute data for KJVL
Wind History from JVL (wind in knots)
|1 day ago||S||Calm||Calm||Calm||S||S||SW||SW||SW||SW||N||N||N||N||NW||NW||W||NW||NW||N||Calm||S||Calm||Calm|
|2 days ago||S||S||S||S||S||S||S||S||S||S|
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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.
Link to Loop
Other links: Northern Pacific Contential US Full GOES-East
Wind Forecast for Milwaukee/Sullivan, WI (3,6,7,8)(on/off)  Help
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