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Marine Weather and Tides
Version 3.4 |
3/30/2021 -- ANZ330 has been split into ANZ331 and ANZ332. Click EDIT in Marine Forecast and select your new zone. 1/26/2021 -- The West Coast Satellite images havd been updated. They now use GEOS-17. 1/1/2021 -- The 7 day forecast are now working well. Thank you NOAA for your support. |
| Sunrise 6:25AM | Sunset 9:03PM | Thursday July 29, 2021 10:47 AM EDT (14:47 UTC) | Moonrise 11:16PM | Moonset 11:22AM | Illumination 73% |  |
LMZ845 South Haven To Holland Mi- 805 Am Edt Thu Jul 29 2021
.small craft advisory in effect through Friday morning...
Today..Northwest winds 10 to 20 knots increasing to 20 to 25 knots late in the day. Mostly cloudy until midday then clearing. Waves 4 to 6 feet.
Tonight..North winds 15 to 25 knots. Mostly clear. Waves 4 to 6 feet.
Friday..North winds 15 to 20 knots backing northwest late in the day. Mostly Sunny. Waves 1 to 3 feet.
Friday night..North winds 10 to 15 knots backing northwest around 5 knots late at night, then backing southwest toward daybreak. Partly cloudy. Waves 1 to 2 feet.
Saturday..Southwest winds 10 to 15 knots. Mostly Sunny with a chance of rain showers. Waves 1 to 3 feet.
Sunday..North winds around 15 knots becoming 15 to 20 knots. Sunny. Waves 3 to 5 feet.
Monday..Northwest winds 10 to 20 knots. Sunny. Waves around 1 foot.
.small craft advisory in effect through Friday morning...
Today..Northwest winds 10 to 20 knots increasing to 20 to 25 knots late in the day. Mostly cloudy until midday then clearing. Waves 4 to 6 feet.
Tonight..North winds 15 to 25 knots. Mostly clear. Waves 4 to 6 feet.
Friday..North winds 15 to 20 knots backing northwest late in the day. Mostly Sunny. Waves 1 to 3 feet.
Friday night..North winds 10 to 15 knots backing northwest around 5 knots late at night, then backing southwest toward daybreak. Partly cloudy. Waves 1 to 2 feet.
Saturday..Southwest winds 10 to 15 knots. Mostly Sunny with a chance of rain showers. Waves 1 to 3 feet.
Sunday..North winds around 15 knots becoming 15 to 20 knots. Sunny. Waves 3 to 5 feet.
Monday..Northwest winds 10 to 20 knots. Sunny. Waves around 1 foot.
LMZ845 Expires:202107292000;;640928
FZUS53 KGRR 291206
NSHGRR
Nearshore Marine Forecast
National Weather Service Grand Rapids MI
805 AM EDT Thu Jul 29 2021
For waters within five nautical miles of shore on Lake Michigan
LMZ845-292000-
7 Day Forecast for Marine Location Near Grand Ledge, MI
Hourly EDIT Help
location: 42.75, -84.75 debug
Area Discussion for - Grand Rapids, MI
(on/off) Help NOTE: mouseover dotted underlined text for definitionFXUS63 KGRR 291200 AFDGRR
Area Forecast Discussion National Weather Service Grand Rapids MI 800 AM EDT Thu Jul 29 2021
LATEST UPDATE . Aviation
SYNOPSIS. Issued at 327 AM EDT Thu Jul 29 2021
- Storms move out this morning
- Cooler Friday
- Showers/thunderstorms later Saturday into Sunday
- Cool into midweek
DISCUSSION. (Today through next Wednesday) Issued at 327 AM EDT Thu Jul 29 2021
- Storms move out this morning
The threat for strong to severe storms is now mostly for the counties south and west of Grand Rapids. The rest of the area, will see showers and thunderstorms ending from north to south over the next few hours. Most area should be dry by 9 to 10 am. In those areas strong to severe storms are very unlikely.
The primary thunderstorm complex has dropped south to southern Wisconsin and with the best instability south of that line, it does seem greatest threat is now west of Lower Michigan. Still the low level jet does develop eastward from Wisconsin into Lower Michigan by 7 am, near I-94. The 1000/850 moisture transport vectors increase and move into our SW CWA by sunrise. So, given the mix layer cape is still expected to be near 2000 j/kg near I-94 west of US-131 and all the other factors, it seems reasonable to believe strong to severe storms are still possible in that area.
Once the convection is south of this area (mid to late morning) we should see decreasing clouds and lower dew points. The real push of cooler air comes in tonight when a secondary cold front comes through the area. Skies should be mostly clear.
- Cooler Friday
The surface high moves in to our area as the polar jet continues to deepen over the eastern CONUS. 850 temperatures fall to between 5 and 10C, which is the coolest it has been since late June. This will result in mostly sunny skies with highs only in the 70s.
- Showers/thunderstorms later Saturday into Sunday
A strongly digging northern stream shortwave moves into this area by later Saturday and that even farther deepens the eastern trough. That shortwave will have cold front associated with it and will have just enough moisture and instability for some scattered showers and thunderstorms. That will mostly be late Saturday into midday Sunday.
- Cool into midweek
As I have been writing about for most of this past week, the eastern trough will remain in place through at least the middle of next week. That will mean cooler temperatures into Wednesday. Once we get past Sunday I expect mostly dry weather through most of next week.
AVIATION. (For the 12Z TAFS through 12Z Friday morning) Issued at 800 AM EDT Thu Jul 29 2021
TAF sites are VFR to begin period as precipitation pulls away from CWA. However, still anticipate a period of MVFR ceilings later this morning as modest low-level cold advection commences behind cold front in cyclonically curved flow. As winds veer this afternoon, MVFR ceilings will lift/mix as drier air arrives, and VFR is then expected for remainder of period. Have included some wind gusts at MKG, given its proximity to stronger boundary-layer winds over Lk Michigan, and this is supported by HRRR wind gust diagnostic.
MARINE. Issued at 327 AM EDT Thu Jul 29 2021
With the cold air coming into tonight we do expect hazardous conditions for beach goes and small water craft into Friday. We will leave our marine headlines as is.
GRR WATCHES/WARNINGS/ADVISORIES. MI . Beach Hazards Statement through Friday morning for MIZ037-043- 050-056-064-071.
LM . Small Craft Advisory until 8 AM EDT Friday for LMZ844>849.
SYNOPSIS . WDM DISCUSSION . WDM AVIATION . Kenyon MARINE . WDM
Weather Reporting Stations
EDIT (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 |
| HLNM4 - 9087031 - Holland, MI | 78 mi | 47 min | NW 12 G 14 | 75°F | 78°F | 1011.5 hPa (+1.2) | 69°F | |
| MKGM4 - Muskegon, MI | 90 mi | 27 min | N 17 G 22 | 73°F | 1011.3 hPa | 67°F | ||
| SBLM4 - Saginaw Bay Light #1, MI | 91 mi | 47 min | WNW 5.1 G 7 | 74°F | 1008.8 hPa (+0.0) |
Wind History for Holland, MI
(wind in knots) EDIT (on/off) Help| 10 AM | 11 AM | 12 PM | 1 PM | 2 PM | 3 PM | 4 PM | 5 PM | 6 PM | 7 PM | 8 PM | 9 PM | 10 PM | 11 PM | 12 AM | 1 AM | 2 AM | 3 AM | 4 AM | 5 AM | 6 AM | 7 AM | 8 AM | 9 AM | |
| Last 24hr | E | E | SW | W | W | SW | SW | S | S | S | S | S | S | E | SE | S | S G14 | SW | SW | S | W | W G17 | SW | NW |
| 1 day ago | NW | S | S | SW | SW | SW | SW | SW | SW | S | S | N | NE | E | E | SE | NE | E | NE | E | E | E | E | E |
| 2 days ago | NW | NW | NW | S | SW | NW | SW | S | S | S | S | S | S | S | S | S | S | S | SW G14 | W | NW G11 | W | NW | NW |
Airport Reports
EDIT (on/off) Help Click EDIT to display multiple airports. Follow links for more data.| Airport | Dist | Age | Wind kt | Visibility | Sky/Weather | Temp | DewPt | Humidity | Pressure |
| Capital Region International Airport, MI | 8 mi | 54 min | W 14 G 22 | 10.00 mi | Mostly Cloudy | 77°F | 67°F | 71% | 1010.5 hPa |
| Charlotte, Fitch H Beach Airport, MI | 13 mi | 52 min | W 14 G 18 | 10.00 mi | Mostly Cloudy | 79°F | 68°F | 68% | 1011.5 hPa |
| Mason, Mason Jewett Field Airport, MI | 21 mi | 52 min | W 8 G 16 | 10.00 mi | Fair | 78°F | 68°F | 72% | 1011.8 hPa |
| Ionia County Airport, MI | 21 mi | 69 min | W 11 G 16 | 10.00 mi | Partly Cloudy | 76°F | 68°F | 76% | 1010.8 hPa |
Link to 5 minute data for KLAN
Wind History from LAN (wind in knots)
| 11 AM | 12 PM | 1 PM | 2 PM | 3 PM | 4 PM | 5 PM | 6 PM | 7 PM | 8 PM | 9 PM | 10 PM | 11 PM | 12 AM | 1 AM | 2 AM | 3 AM | 4 AM | 5 AM | 6 AM | 7 AM | 8 AM | 9 AM | 10 AM | |
| Last 24hr | NE | NE | Calm | Calm | N | Calm | W | Calm | SE | S | S | Calm | S | S | SW | SW | SW | SW | W | W | W | W G22 | ||
| 1 day ago | W | NW | NW | N | N | W | W | W | W | W | W | W | Calm | Calm | W | Calm | W | W | NW | Calm | Calm | NE | ||
| 2 days ago | W | W | W | NW | NW G16 | NW | W | W | W | W | W | W | W | W | SW | Calm | SW | W | SW | W | W | SW | W | W G20 |
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NOTE: This section has been updated as of 1/26/2021. If the image you are expecting is not showing, please let me know. You may use the EDIT function to update your location.
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