Marine Weather and Tides
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.
6/2/2019. Many thanks to a user for reporting an error on one of the Edit pages. The switch to PHP 7.2 caused many pages that previously worked to quit working. I fixed many but I still depend on users to report ones I missed. Please report errors HERE or send an email to me at L-36.com. Allen
|Sunrise 7:20AM||Sunset 4:24PM||Monday December 16, 2019 1:55 AM CST (07:55 UTC)||Moonrise 10:18PM||Moonset 12:06PM||Illumination 79%|
7 Day Forecast for Marine Location Near Deerfield, WIHourly EDIT Help
Area Discussion for - Milwaukee/Sullivan, WI  (on/off)  Help NOTE: mouseover dotted underlined text for definition
FXUS63 KMKX 160547 AFDMKX
Area Forecast Discussion National Weather Service Milwaukee/Sullivan WI 1147 PM CST Sun Dec 15 2019
UPDATE. Light snow and flurries are occurring across southern Wisconsin at the moment with the main area of snow accumulations being from Green County near Monroe over to Janesville in Rock county where visibility has been down around 2-3sm for the past hour. DOT cams show that a light dusting has occurred there with some powdery snow on the shoulders of the highways. Based on reflectivity on radar to the west of the office, expected that visibility was about to drop in Madison, etc but it hasn't. Only site out in SW WI that has been reporting anything has been Viroqua. Main forcing appears to come in the 850-600mb column and based on the past few runs of the RAP, it should be through within the next few hours, well before the morning rush. Thus, sticking to the dusting to no accumulation forecast through early morning.
AVIATION(06Z TAFS). Conditions are mainly VFR across southern WI, but some brief drops in visibility down to around 2sm have occurred at Monroe on over to Kenosha as a system moves through. Could have some brief drops in ceilings as well, down to around 1.5kft. Conditions should quickly improve this morning after the system moves off to the east and a ridge of high pressure sits over the region. A patch of MVFR ceilings around 2kft may move in during the afternoon/evening, but conditions may remain dry enough in the low levels down here that it doesn't materialize.
PREV DISCUSSION . (Issued 247 PM CST Sun Dec 15 2019)
SHORT TERM .
Tonight and Monday . Forecast confidence is high.
A rather moist mid level trof axis will drift across the area tonight . associated with the bigger system staying well south of Wisconsin. It looks like it could produce some flurries for a time, mainly south of Milwaukee and Madison. We may even see a dusting of accumulation southwest of Madison. None of this will have any impact on travel for Monday morning. This is a brief event and will be south and east of the area by the morning commute. The clouds spreading across the area will keep temps in check tonight, though still chilly in the teens. Winds will be light or calm into Monday morning.
LONG TERM .
Monday Night through Wednesday . Forecast Confidence is High .
The system to the south will push east/northeast ushering in some cooler and drier air behind it as light winds turn to the northwest. The upper level low will continue pushing southeast into the great lakes region Tuesday. This will actually bring a chance for some light snow Tuesday night but given fairly dry air in the lower levels not much, if anything, is expected. Wednesday will see high pressure push in as the upper level low pulls out to the east.
Generally quiet conditions are expected through this period with mostly dry conditions though some cooler temperatures are likely, especially Tuesday night.
Thursday through Sunday . Forecast Confidence is Medium .
This period continues to look fairly quiet at the moment with an upper level ridge dominating the region Thursday. However, models are indicating that an upper level low will move through the region late next week, which will areas of low pressure, however, models remain mostly dry due to the dominance of dry air, especially near the surface. If we can get any sort of influx of moisture the situation late next week could change but for now dry conditions are expected. Otherwise temperatures for this period look to be more mild for this time of year.
AVIATION(00Z TAFS) . VFR conditions are expected through the period. May have some flurries or light snow move through overnight but visibilities are expected to stay VFR, perhaps briefly to MVFR. Ceilings will drop into the 4-6kft range as this feature moves through overnight but then lift going into tomorrow morning. Winds will be very light to calm as a ridge of high pressure sits overhead on into tomorrow.
Strongest winds tonight/tomorrow will be across the northern end of Lake Michigan with a broad ridge of high pressure setup across the southern portion of it. This ridge will gradually dissipate with more of a northwesterly flow setup developing with a cold front pushing through on Tuesday.
MKX WATCHES/WARNINGS/ADVISORIES. WI . None. LM . None.
Update . Halbach Tonight/Monday and Aviation/Marine . Davis Monday Night through Sunday . ARK
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||59 mi||46 min||WNW 4.1 G 5.1||23°F|
|PWAW3 - Port Washington, WI||64 mi||76 min||WNW 4.1 G 6||23°F||1021.7 hPa|
|KNSW3 - Kenosha, WI||71 mi||56 min||NW 7 G 8||23°F||1020 hPa (+0.0)|
Airport ReportsEDIT (on/off)  Help Click EDIT to display multiple airports. Follow links for more data.
|Watertown, WI||16 mi||61 min||N 0||2.50 mi||Light Snow||20°F||18°F||93%||1020 hPa|
|Madison, Dane County Regional-Truax Field, WI||18 mi||63 min||N 0||2.00 mi||Light Snow||19°F||14°F||81%||1021.4 hPa|
Link to 5 minute data for KRYV
Wind History from RYV (wind in knots)
|1 day ago||Calm||Calm||NW||NW||NW||NW||NW||NW||NW||NW|
|2 days ago||N||Calm||Calm||Calm||N||Calm||N||NE||Calm||Calm||Calm||Calm||Calm||Calm||W||NW||Calm||Calm||E||Calm||Calm||Calm||Calm||Calm|
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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 (2,6,7,8)(on/off)  Help
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