Marine Weather and Tide Forecast for Horton Bay, MI
April 18, 2025 6:38 PM EDT (22:38 UTC) Change Location
![]() | Sunrise 6:42 AM Sunset 8:30 PM Moonrise 12:49 AM Moonset 8:36 AM |
LMZ342 Norwood Mi To 5nm West Of Mackinac Bridge Including Little Traverse Bay- 311 Pm Edt Fri Apr 18 2025
Through early evening - West wind 5 to 10 knots. Chance of showers and Thunderstorms. Waves 2 feet or less.
Tonight - Northwest wind 10 to 15 knots. Rain showers likely and a chance of Thunderstorms. Waves 2 to 3 feet.
Saturday - Northwest wind 10 to 15 knots. Partly Sunny. Waves 2 to 3 feet.
Saturday night - North wind 10 to 15 knots. Mostly clear. Waves 2 feet or less.
Sunday - East wind 10 to 15 knots. Partly Sunny. Waves 2 feet or less.
winds and waves higher in the vicinity of Thunderstorms.
see the open lakes forecast for days 3 through 5.
winds and waves higher in the vicinity of Thunderstorms.
see the open lakes forecast for days 3 through 5.
LMZ300
No data
No data
7 Day Forecast for Marine Location Near Horton Bay, MI

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Area Discussion for Gaylord, MI
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FXUS63 KAPX 181955 AFDAPX
Area Forecast Discussion National Weather Service Gaylord MI 355 PM EDT Fri Apr 18 2025
KEY MESSAGES
- Showers and some thunderstorms possible this afternoon; minimal chance for severe weather for Saginaw Bay region
- Rainy and breezy conditions expected Sunday night into Monday night.
- Above normal temperatures likely later next week.
SHORT TERM /THROUGH SATURDAY/
Issued at 354 PM EDT Fri Apr 18 2025
PATTERN SYNOPSIS/FORECAST:
First round of convective activity now well stage-right. Some clearing earlier this afternoon in its wake...but clouds now spreading back in as moisture increases from the southwest ahead of the positively tilted trough axis aloft...and subtle PV maxes embedded in the main flow. Surface low over SW WI with an area of convection developing over northern IL...and subtle/nebulous boundary across southern WI into northern MI to a surface low well north over Ontario. Winds generally NW behind this; generally some kind of southerly component ahead of this. Expecting the overall front/surface trough axis to slowly drop southeastward through the night; troughing lingers in the region through Saturday afternoon, with a much cooler but potentially breezy day...until high pressure finally tries to build back into the area late in the day.
Primary Forecast Concerns:
Thunderstorm/severe(?) potential through tonight...at this point...not sure how much in the way of actual severe weather will end up developing. Do think we still have a shot at seeing some rain and perhaps embedded thunder through this evening. A lot of gravity waves showing up on satellite imagery with the mid/high moisture moving in...and do wonder if this will be able to influence anything that does try to crop up. Area of convection developing over S WI/N IL...and initial thoughts are this will primarily track through SW Lower MI again...where temps are warmer despite morning convection.
Across our area...think there is still enough instability aloft to support somewhat deeper convection if we can get enough forcing aloft to kick things off. Best chance for this would be generally along and south of the M-72 corridor...with hail still the most likely threat, followed by wind...though we may very well end up on the stratiform rain side of things yet again.
LONG TERM /SATURDAY NIGHT THROUGH FRIDAY/
Issued at 354 PM EDT Fri Apr 18 2025
Easter Sunday looks like it will be alright weather wise with sunshine giving way to increasing cloudiness. Temperatures for most will be near seasonable levels (low and mid 50s), except cooler near the Lake Huron shorelines as easterly winds come off the cold lake.
More much needed rainfall is then expected Sunday night into Monday as low pressure moves across the region. Winds will be gusty at times as well. The remainder of the forecast looks mainly uneventful with extended guidance varying on possible disturbances moving through the flow. Seasonably warm Monday followed by cooler readings on Tuesday. This is likely to be followed by a warming trend through the remainder of the work week with highs in the 50s and even 60s by the end of the week.
AVIATION /18Z TAFS THROUGH 18Z SATURDAY/
Issued at 147 PM EDT Fri Apr 18 2025
Some clearing over most of northern Lower attm, but redevelopment of MVFR cigs from TVC/MBL toward Y31 already ongoing as of 17z. Cigs slowly improving for CIU this afternoon. Expecting some rain/TS to develop across the area later this afternoon into this evening, esp for APN to TVC
with cigs/visbys crashing to MVFR/IFR
and LIFR largely after 0z for all sites. Window for TS should be 20z to 05z.
Wind shift from SW to NW expected starting first in the EUP and tracking toward Saginaw Bay; variable winds elsewhere with some lake breezes possible (already seeing this at TVC). Winds increase for Sat AM with sustained 10-15kts gusting 25kts; MVFR cigs with some daytime showers possible.
APX WATCHES/WARNINGS/ADVISORIES
MI...None.
MARINE...Small Craft Advisory until 6 PM EDT this evening for LHZ346>349.
Area Forecast Discussion National Weather Service Gaylord MI 355 PM EDT Fri Apr 18 2025
KEY MESSAGES
- Showers and some thunderstorms possible this afternoon; minimal chance for severe weather for Saginaw Bay region
- Rainy and breezy conditions expected Sunday night into Monday night.
- Above normal temperatures likely later next week.
SHORT TERM /THROUGH SATURDAY/
Issued at 354 PM EDT Fri Apr 18 2025
PATTERN SYNOPSIS/FORECAST:
First round of convective activity now well stage-right. Some clearing earlier this afternoon in its wake...but clouds now spreading back in as moisture increases from the southwest ahead of the positively tilted trough axis aloft...and subtle PV maxes embedded in the main flow. Surface low over SW WI with an area of convection developing over northern IL...and subtle/nebulous boundary across southern WI into northern MI to a surface low well north over Ontario. Winds generally NW behind this; generally some kind of southerly component ahead of this. Expecting the overall front/surface trough axis to slowly drop southeastward through the night; troughing lingers in the region through Saturday afternoon, with a much cooler but potentially breezy day...until high pressure finally tries to build back into the area late in the day.
Primary Forecast Concerns:
Thunderstorm/severe(?) potential through tonight...at this point...not sure how much in the way of actual severe weather will end up developing. Do think we still have a shot at seeing some rain and perhaps embedded thunder through this evening. A lot of gravity waves showing up on satellite imagery with the mid/high moisture moving in...and do wonder if this will be able to influence anything that does try to crop up. Area of convection developing over S WI/N IL...and initial thoughts are this will primarily track through SW Lower MI again...where temps are warmer despite morning convection.
Across our area...think there is still enough instability aloft to support somewhat deeper convection if we can get enough forcing aloft to kick things off. Best chance for this would be generally along and south of the M-72 corridor...with hail still the most likely threat, followed by wind...though we may very well end up on the stratiform rain side of things yet again.
LONG TERM /SATURDAY NIGHT THROUGH FRIDAY/
Issued at 354 PM EDT Fri Apr 18 2025
Easter Sunday looks like it will be alright weather wise with sunshine giving way to increasing cloudiness. Temperatures for most will be near seasonable levels (low and mid 50s), except cooler near the Lake Huron shorelines as easterly winds come off the cold lake.
More much needed rainfall is then expected Sunday night into Monday as low pressure moves across the region. Winds will be gusty at times as well. The remainder of the forecast looks mainly uneventful with extended guidance varying on possible disturbances moving through the flow. Seasonably warm Monday followed by cooler readings on Tuesday. This is likely to be followed by a warming trend through the remainder of the work week with highs in the 50s and even 60s by the end of the week.
AVIATION /18Z TAFS THROUGH 18Z SATURDAY/
Issued at 147 PM EDT Fri Apr 18 2025
Some clearing over most of northern Lower attm, but redevelopment of MVFR cigs from TVC/MBL toward Y31 already ongoing as of 17z. Cigs slowly improving for CIU this afternoon. Expecting some rain/TS to develop across the area later this afternoon into this evening, esp for APN to TVC
with cigs/visbys crashing to MVFR/IFR
and LIFR largely after 0z for all sites. Window for TS should be 20z to 05z.
Wind shift from SW to NW expected starting first in the EUP and tracking toward Saginaw Bay; variable winds elsewhere with some lake breezes possible (already seeing this at TVC). Winds increase for Sat AM with sustained 10-15kts gusting 25kts; MVFR cigs with some daytime showers possible.
APX WATCHES/WARNINGS/ADVISORIES
MI...None.
MARINE...Small Craft Advisory until 6 PM EDT this evening for LHZ346>349.
Stations | Dist | Age | Wind | Air | Water | Waves | inHg | DewPt |
GTLM4 - Grand Traverse Light, MI | 30 mi | 59 min | ENE 4.1G | 42°F | 29.71 | |||
MACM4 - 9075080 - Mackinaw City, MI | 35 mi | 51 min | WNW 1.9G | 51°F | 41°F | 29.64 | 44°F | |
CYGM4 - Cheybogan, MI | 37 mi | 24 min | N 8G | 52°F | 29.71 | 41°F |
Wind History for Mackinaw City, MI
toggle option: (graph/table)
Airport Reports
Airport | Dist | Age | Wind kt | Vis | Sky | Weather | Air | DewPt | RH | inHg |
KMGN HARBOR SPRINGS,MI | 10 sm | 13 min | SW 03 | 10 sm | Overcast | 46°F | 43°F | 87% | 29.70 | |
KBFA BOYNE MOUNTAIN,MI | 11 sm | 24 min | S 04 | 10 sm | Overcast | 61°F | 54°F | 77% | 29.69 | |
KCVX CHARLEVOIX MUNI,MI | 15 sm | 24 min | WNW 02 | 10 sm | Overcast | 48°F | 43°F | 81% | 29.70 | |
KPLN PELLSTON RGNL AIRPORT OF EMMET COUNTY,MI | 21 sm | 45 min | WNW 05 | 10 sm | Overcast | 57°F | 46°F | 67% | 29.70 |
Link to 1 hour of 5 minute data for KMGN
Terminal Aerodrome Forecast (TAF) for KMGN
Wind History Graph: MGN
(wind in knots)GEOS Local Image of great lakes
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Gaylord, MI,

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