Marine Weather and Tides
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.
3/12/2015 - Added section for Gulf current for users in the GMZ marine zones.
This was requested by a user. If you have requests, please let me know.
|Sunrise 6:51AM||Sunset 7:15PM||Thursday March 23, 2017 4:59 PM CDT (21:59 UTC)||Moonrise 4:21AM||Moonset 2:32PM||Illumination 14%|
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|LMZ644 Sheboygan To Port Washington Wi- Port Washington To North Point Light Wi- 323 Pm Cdt Thu Mar 23 2017 |
.small craft advisory in effect until 1 am cdt Friday...
Tonight..South wind 15 to 20 knots easing to 10 to 15 knots after midnight. Gusts up to 25 knots. Slight chance of Thunderstorms in the evening. Chance of showers through around midnight, then slight chance of rain after midnight. Waves 4 to 6 feet subsiding to 3 to 5 feet late in the evening, then subsiding to 3 to 4 feet after midnight.
Friday..Southwest wind 10 to 15 knots veering northwest early in the afternoon, then veering north with gusts to around 20 knots late in the afternoon. Chance of rain through the day. Waves 2 to 4 feet subsiding to 1 to 3 feet in the late morning and early afternoon, then building to 2 to 4 feet late in the afternoon.
Friday night..Northeast wind 15 to 20 knots becoming 15 to 25 knots after midnight. Slight chance of Thunderstorms through around midnight. Periods of showers through the night. Waves 3 to 4 feet.
Saturday..Northeast wind 15 to 20 knots with gusts to around 25 knots. Periods of showers. Waves 3 to 4 feet.
|LMZ644 Expires:201703240415;;967869 FZUS53 KMKX 232023 NSHMKX NEARSHORE MARINE FORECAST NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI 323 PM CDT THU MAR 23 2017 FOR WATERS WITHIN FIVE NAUTICAL MILES OF SHORE ON LAKE MICHIGAN LMZ643-644-240415-|
7 Day Forecast for Marine Location Near Madison, WIHourly EDIT Help
Area Discussion for - Milwaukee/Sullivan, WI  (on/off)  Help NOTE: mouseover dotted underlined text for definition
|Fxus63 kmkx 232024|
area forecast discussion
national weather service milwaukee/sullivan wi
325 pm cdt Thu mar 23 2017
Tonight and Friday - forecast confidence Medium.
A complex situation is playing out across the northern plains. A
weak warm front is pushing northeast through iowa and illinois while
a secondary boundary stretching from north central ia into NE kansas
also pushes to the ne. Near the intersection of these two
boundaries, a small cluster of thunderstorms have developed and have
been pushing across northern iowa though the afternoon. Meanwhile, a
large dry slot has developed between the two frontal features.
High res guidance has a very poor handle on all of these features,
but given current trends and set up of the atmosphere, am expecting
the cluster of thunderstorms to gradually weaken before making it
to our western cwa. Shortly after those showers and storms arrive,
the warm front will push through the area. We can expect at least a
slight chance of precip as these features move through the area.
Guidance is in good agreement that the warm front will stall out in
central wisconsin, but there is quite a bit of noise regarding how
much moisture will remain in place to the south of the front. Most
guidance keeps much of the moisture in the vicinity of the front, so
am expecting broken to occasionally scattered clouds in the southern
half of the cwa.
The warm front will stay to the north of the CWA though the night
before it begins to slowly creep southward tomorrow. As it moves
south, am expecting cloud coverage and precip chances to increase
into the afternoon. Mu CAPE looks limited through at least the early
afternoon, so chose to leave thunder out until after 21z. Before the
front moves into our area, we can expect broken to scattered clouds
in our south along with moderately strong southerly winds. This will
result in very warm temperatures in the southern half of the cwa,
perhaps breaching 70 in some locations.
Friday night through Sunday - forecast confidence Medium to
More widespread precipitation threat expected Friday night into
Saturday morning as approaching low pressure system still
undergoing minor strengthening. Impressive layer q-vector
convergence of 20 to 30 units brushes southern wi Fri night along
with layer frontogenetical forcing for a time. Short term guidance
trending slightly south with axis of heavier precipitation
during this period. Will continue highest pops Friday night
into Saturday morning, then trend slowly downward. However
occasional light rain or drizzle will likely continue into
Sunday as low pressure weakens and gets nudged eastward later in
the weekend as weak convergence and low level deformation lingers
across the area along with plentiful low level moisture. Fog threat
will increase as bounday layer winds weaken Saturday night into
Sunday. Will continue to mention thunder threat as well Friday|
night when strongest synoptic scale forcing is expected along with
nearness of southward moving boundary.
Sunday night through Thursday - forecast confidence... Medium.
Unsettled weather looks to continue through early next week.
Secondary weakening short wave over central plains trending
toward more northerly track and may bring more light rain back
to southern wi on Monday and Monday night. Cool ene surface wind
flow to continue so cooler by the lake for much of the period. More
amplified 500h pattern sets up for several days as upstream long
wave trof moves across the western conus, and resulting large scale
ridging builds across the great lakes and upper midwest. Around mid-
week, upstream trof wl get nudged eastward into the central conus,
eventually returning rain chances to the great lakes Thu into
Friday. ECMWF and canadian more bullish in spreading rain back into
srn wi on Thursday, while GFS holds off for 24 hours. Wpc blend
has more confidence in faster solution so wl spread chance pops back
in for Thursday. Warmer low level thermal structure favors rain
for the expected precipitation events during the period.
.Aviation (21z TAF update)
warm front continues to approach the area from the southwest.
Scattered showers and isolated thunderstorms have developed along
the front, along with some MVFR to occasionally ifr cigs. As the
front passes through the region in the late afternoon and evening,
most guidance has the CIGS improving and the precipitation
dissipating. However, models do not currently have a good handle on
the complex unfolding situation, so uncertainty in the forecast is
high. It seems like a good bet the MVFR CIGS will reach at least to
msn as the front passes later this afternoon, and perhaps farther
east toward evening. Meanwhile, llws remains likely though the
Winds should begin to diminish this evening as the pressure gradient
gradually weakens. Accordingly, SCA expiration looks to be on
schedule. After a brief period of weaker winds overnight and into
tomorrow morning, offshore winds will ramp back up in the early
afternoon, especially in the south. Another SCA may be needed for
Lm... Small craft advisory until 7 pm cdt this evening for lmz645-646.
Small craft advisory until 1 am cdt Friday for lmz643-644.
Tonight and Friday/marine... Bhs
Friday night through Thursday... mbk
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||82 mi||49 min||SSE 18 G 20||36°F|
|PWAW3 - Port Washington, WI||85 mi||79 min||S 18 G 25||37°F||1023 hPa|
|KNSW3 - Kenosha, WI||93 mi||59 min||SE 17 G 19||38°F||1021.7 hPa (-3.7)|
Airport ReportsEDIT (on/off)  Help Click EDIT to display multiple airports
|Middleton Muni - Morey Field, WI||6 mi||84 min||S 14 G 17||10.00 mi||Overcast||46°F||20°F||36%||1020 hPa|
|Madison, Dane County Regional-Truax Field, WI||6 mi||66 min||S 18||10.00 mi||Overcast and Breezy||45°F||19°F||35%||1020.3 hPa|
Wind History from C29 (wind in knots)
|1 day ago||N|
|2 days ago||NE|
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Weather Map and Satellite Images(on/off)  Help
|Weather Map ||IR Satellite Image from GEOS|
GOES Local Image of Midwest EDIT
Wind Forecast for Milwaukee/Sullivan, WI (17,4,5,8)(on/off)  Help
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