Marine Weather and Tide Forecast for Ephraim, WI
September 8, 2024 12:44 AM CDT (05:44 UTC) Change Location
 | Sunrise 6:22 AM Sunset 7:16 PM Moonrise 12:01 PM Moonset 9:13 PM |
LMZ541 Rock Island Passage To Sturgeon Bay Wi- 854 Pm Cdt Sat Sep 7 2024
Tonight - NW wind 5 to 10 kts backing W after midnight. Mostly clear. Waves 2 ft or less.
Sunday - SW wind 5 to 10 kts. Partly cloudy. Waves 2 ft or less.
Sunday night - W wind 10 to 15 kts. Mostly clear. Waves 2 ft or less.
Monday - NW wind 5 to 10 kts veering se in the afternoon. Sunny. Waves 2 ft or less.
LMZ500
No data
No data
FXUS63 KGRB 080241 AFDGRB
Area Forecast Discussion National Weather Service Green Bay WI 941 PM CDT Sat Sep 7 2024
Updated aviation portion for 06Z TAF issuance
KEY MESSAGES
- Brief chance for isolated showers possible near the Upper Peninsula border in northern Wisconsin tomorrow.
- Despite the fall-like temperatures today, more summer-like temperatures return over the course of the work week, with temperatures will slowly warm through next week, with highs back in the 80s early next week and lasting through at least the end of next week.
DISCUSSION
Issued at 239 PM CDT Sat Sep 7 2024
Short Term...Tonight and Sunday
Cool northerly flow across the region brought in high pressure conditions for the afternoon, with cool temperatures and light winds. The remaining lake effect cloud cover was also gradually pushed eastwards out of the region.
Clear skies will remain in place across the region this evening, making for a sunny albeit cool end to the day. Temperatures may make a brief drop in the early overnight hours before an approaching mid-level feature brings back mid to high cloud cover.
The additional cloud cover should help keep temperatures from dropping as far as they did last night, so not currently anticipating any frost or freeze concerns for tonight.
Sunday, the shortwave mentioned above will pass across the region in the late morning to early afternoon hours, which will keep some additional cloud cover in the forecast as well as produce some isolated (~20%) shower chances for areas near the Upper Peninsula border. Winds with the shortwave could also briefly come back up to around 15 mph before turning westerly, which will allow some warmer air to work its way back into the region.
Long Term...Sunday Night Through Saturday
The extended period will feature a fairly long dry period for the region, with no real precipitation features currently expected.
The overall upper pattern shows broad and persistent ridging across central CONUS, which will help keep a long period of dry conditions in place across the region. As the ridge slowly drifts eastwards, surface flow will shift southwards for our area, which will bring back an extended period of gradually warming through the work week. High temperatures are expected to get back towards the lower 80s by Monday/Tuesday and then well into the 80s by the end of the week. So despite the fall-like temperatures today, much more summer feeling temperatures will return in the upcoming week.
AVIATION
for 06Z TAF Issuance Issued at 940 PM CDT Sat Sep 7 2024
VFR flying weather is expected through Sunday night. Upper level jet streaks will produce middle and high clouds at times, and there could be a few showers across far northeast Wisconsin on Sunday. If these showers do materialize they could produce brief MVFR conditions.
GRB WATCHES/WARNINGS/ADVISORIES
None.
Area Forecast Discussion National Weather Service Green Bay WI 941 PM CDT Sat Sep 7 2024
Updated aviation portion for 06Z TAF issuance
KEY MESSAGES
- Brief chance for isolated showers possible near the Upper Peninsula border in northern Wisconsin tomorrow.
- Despite the fall-like temperatures today, more summer-like temperatures return over the course of the work week, with temperatures will slowly warm through next week, with highs back in the 80s early next week and lasting through at least the end of next week.
DISCUSSION
Issued at 239 PM CDT Sat Sep 7 2024
Short Term...Tonight and Sunday
Cool northerly flow across the region brought in high pressure conditions for the afternoon, with cool temperatures and light winds. The remaining lake effect cloud cover was also gradually pushed eastwards out of the region.
Clear skies will remain in place across the region this evening, making for a sunny albeit cool end to the day. Temperatures may make a brief drop in the early overnight hours before an approaching mid-level feature brings back mid to high cloud cover.
The additional cloud cover should help keep temperatures from dropping as far as they did last night, so not currently anticipating any frost or freeze concerns for tonight.
Sunday, the shortwave mentioned above will pass across the region in the late morning to early afternoon hours, which will keep some additional cloud cover in the forecast as well as produce some isolated (~20%) shower chances for areas near the Upper Peninsula border. Winds with the shortwave could also briefly come back up to around 15 mph before turning westerly, which will allow some warmer air to work its way back into the region.
Long Term...Sunday Night Through Saturday
The extended period will feature a fairly long dry period for the region, with no real precipitation features currently expected.
The overall upper pattern shows broad and persistent ridging across central CONUS, which will help keep a long period of dry conditions in place across the region. As the ridge slowly drifts eastwards, surface flow will shift southwards for our area, which will bring back an extended period of gradually warming through the work week. High temperatures are expected to get back towards the lower 80s by Monday/Tuesday and then well into the 80s by the end of the week. So despite the fall-like temperatures today, much more summer feeling temperatures will return in the upcoming week.
AVIATION
for 06Z TAF Issuance Issued at 940 PM CDT Sat Sep 7 2024
VFR flying weather is expected through Sunday night. Upper level jet streaks will produce middle and high clouds at times, and there could be a few showers across far northeast Wisconsin on Sunday. If these showers do materialize they could produce brief MVFR conditions.
GRB WATCHES/WARNINGS/ADVISORIES
None.
| Stations | Dist | Age | Wind | Air | Water | Waves | inHg | DewPt |
| CBRW3 - Chambers Island, WI | 10 mi | 64 min | 0G | 55°F | ||||
| NPDW3 - Northport Pier at Death's Door WI | 14 mi | 104 min | N 2.9G | 55°F | 30.13 | |||
| MN4 - 9087088 - Menominee, MI | 22 mi | 56 min | WSW 2.9G | 54°F | 67°F | 30.07 | 46°F | |
| FPTM4 - Fairport, MI | 42 mi | 64 min | 0G | 49°F | ||||
| 45002 - N MICHIGAN- Halfway between North Manitou and Washington Islands. | 43 mi | 44 min | NW 7.8G | 57°F | 65°F | 30.11 | 47°F |
toggle option: (graph/table)
Link to 1 hour of 5 minute data for KMNM
Terminal Aerodrome Forecast (TAF) for KMNM
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Terminal Aerodrome Forecast (TAF) for KMNM
Wind History graph: MNM
(wind in knots)
Green Bay, WI,
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