Thursday, March4, 2021
Privacy Policy
L-36.com

Marine Weather and Tides
St. James, MI

Version 3.4
NOTICE
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 7:08AMSunset 6:29PM Thursday March 4, 2021 8:05 PM EST (01:05 UTC) Moonrise 12:11AMMoonset 10:10AM Illumination 62% Phase: Waning Gibbous; Moon at 21 days in cycle
NOTE: Some of the data on this page has not been verified and should be used with that in mind. It may and occasionally will, be wrong. The tide reports are by xtide and are NOT FOR NAVIGATION.
Marine Forecasts
    EDIT      (on/off)   Help
LMZ362 Expires:202103050415;;472782 Fzus63 Kmkx 042023 Glflm Open Lake Forecast For Lake Michigan National Weather Service Milwaukee/sullivan Wi 223 Pm Cst Thu Mar 4 2021 For Waters Beyond Five Nautical Miles Of Shore On Lake Michigan. Waves Are Provided As A Range Of Significant Wave Heights, Which Is The Average Of The Highest 1/3 Of The Wave, Along With The Average Height Of The Highest 10% Of The Waves Which Will Occasionally Be Encountered.
Synopsis.. Strong high pressure of 30.6 inches will linger to the west of hudson bay today into Friday, before shifting southeast across ontario on Saturday. North winds are generally expected through tonight, then become northwest on Friday. North to northwest winds are then expected Friday night into Saturday. Winds should shift to the south later in the weekend and potentially become gusty at times in the early to middle portions of next week. && lmz261-362-364-366-563-565-567-868-050415- lake michigan from seul choix point to rock island passage 5 nm offshore to mid lake- lake michigan south of a line from seul choix point to the mackinac bridge and north of a line from charlevoix mi to south fox island 5 nm offshore- lake michigan from charlevoix to point betsie mi 5 nm offshore to mid lake- lake michigan from point betsie to manistee mi 5 nm offshore to mid lake- lake michigan from rock island passage to sturgeon bay wi- lake michigan from sturgeon bay to two rivers wi 5 nm offshore to mid lake- lake michigan from two rivers to sheboygan wi 5 nm offshore to mid lake- lake michigan from pentwater to manistee mi 5 nm offshore to mid lake- 223 pm cst Thu mar 4 2021 sheboygan wi to pentwater mi north...
Tonight..North winds 10 to 20 kt becoming northwest 10 to 15 kt. Waves 3 to 5 ft subsiding to 2 to 4 ft.
Friday..Northwest winds 10 to 20 kt becoming north 15 to 25 kt. Waves 3 to 5 ft.
Friday night..North winds 15 to 25 kt diminishing to 10 to 20 kt. Waves 4 to 6 ft occasionally to 8 ft.
Saturday..North winds 10 to 20 kt becoming northwest. Waves 3 to 5 ft.
Saturday night..North winds 10 to 20 kt diminishing to 5 to 10 kt overnight. Waves 2 to 4 ft subsiding to 1 to 2 ft.
Sunday..Southeast winds 5 to 10 kt becoming south 10 to 20 kt in the afternoon. Waves 1 to 2 ft building to 2 to 4 ft.
Sunday night..South winds 10 to 20 kt becoming southwest 15 to 25 kt. Waves 4 to 6 ft occasionally to 8 ft.
Monday..Southwest winds 10 to 20 kt. Waves 4 to 6 ft occasionally to 8 ft subsiding to 3 to 5 ft.
Tuesday..South winds 10 to 20 kt. Waves 2 to 4 ft building to 4 to 6 ft occasionally to 8 ft.
LMZ362


7 Day Forecast for Marine Location Near St. James, MI
   Hourly   EDIT   Help
location: 45.58, -85.54     debug


Area Discussion for - Gaylord, MI
      (on/off)   Help   NOTE: mouseover dotted underlined text for definition
FXUS63 KAPX 042344 AFDAPX

Area Forecast Discussion National Weather Service Gaylord MI 644 PM EST Thu Mar 4 2021

NEAR TERM. (Through Tonight) Issued at 331 PM EST Thu Mar 4 2021

High Impact Weather Potential: Minimal.

Pattern Synopsis/Forecast: 18z surface analysis shows a 1033mb high centered north of Lake Superior with a ridge axis extending southward across western Upper/eastern Wisconsin/eastern Illinois. Michigan on the chilly side of this high but at least skies are mainly sunny across the board. A couple of anticyclonically curved bands of warm advection induced clouds can be found over northwest Ontario and starting to spill into western Lake Superior. Meanwhile multi-band lake convection remains over Lakes Michigan and Huron.

Amplifying large scale pattern expected to strengthen the northwesterly jet axis across the Great Lakes tonight . with some weak height falls moving into Michigan Friday. Upstream surface ridge axis may not make much additional progress eastward . with time will begin to see some pressure falls back into Michigan from the northeast as surface pressure gradient expected to tighten up again going into Friday.

Primary Forecast Concerns: Impacts of increasing isentropic ascent across the forecast area later tonight . combined with lingering low level cold air/overwater instability (925mb temperatures in the -6C to -10C range from west to east). After a clear start to the evening expect to see at least some mid clouds spreading/developing southeast into Upper Michigan later this evening and then into northern Lower after midnight. Low level flow is expected to back more to the northwest this evening (already starting on Lake Superior per satellite imagery) . though don't expect an immediate lake response on Lake Michigan this evening. Upstream moist layer is pretty thin but there a few spotty radar returns across northwest Ontario and the Minnesota Arrowhead . and the combination of this mid cloud and an increasing lake response overnight may be enough to get some snow flurries going in spots . or some light snow showers off Lake Superior. Or maybe even some freezing drizzle depending on cloud layer temperatures which could be somewhat marginal though not totally sure on the likelihood of this scenario coming to pass.

Temperatures may tank this evening under initially clear skies . light winds..and dew points mixing into the single digits this afternoon. A few lows in the single digits possible before clouds roll back in later.

SHORT TERM. (Friday through Sunday) Issued at 331 PM EST Thu Mar 4 2021

Primary forecast concerns/challenges: Any lake effect?

No big changes in the guidance since yesterday with a northwest flow aloft expected to remain in place through Sunday morning. This will be followed by building heights Sunday afternoon. It's marginally cold enough for lake processes to take hold Friday into early Saturday but the airmass appears to be rather dry so only some lake clouds and perhaps a few passing flurries are expected. Partly to mostly cloudy Friday morning, otherwise most spots should see a good deal of sunshine through the period. Temperatures will be a few degrees below normal Friday and Saturday with highs ranging from the upper 20s to mid 30s. Not quite as cold Sunday with highs moderating into the mid and upper 30s. Lows will be quite cold with the upper single digits and teens Friday night then with surface high pressure settling overhead Saturday, lows mainly in the single digits above zero with a few spots likely dipping below zero.

LONG TERM. (Sunday night through Thursday) Issued at 331 PM EST Thu Mar 4 2021

High impact weather potential: None is expected.

Zonal to upper level ridging for the first half of the week leads to unseasonably mild conditions. Low pressure likely tracking by to our northwest will then increase chances for rain heading toward midweek. Not as mild to end the period. Highs are expected to be well into the 40s to the low 50s Monday then mainly the 50s Tuesday and Wednesday when a few spots could even hit the 60 degree mark. Highs Thursday in the upper 30s and 40s. Lows in the mid 20s to low 30s Monday and Wednesday nights and the 30s to low 40s Tuesday night.

AVIATION. (For the 00Z TAFS through 00Z Friday evening) Issued at 639 PM EST Thu Mar 4 2021

VFR conditions expected this evening before ceilings lower overnight into Friday morning. MVFR conditions will become widespread across much of the area. A few flurries or a light snowshower will be possible but not enough of a chance to warrant a mention in the TAF. VFR conditions will return by Friday afternoon. Light winds tonight. Winds increasing and becoming gusty from the northwest on Friday (G20kts).

MARINE. Issued at 331 PM EST Thu Mar 4 2021

Increasing wind speeds will be the issue starting tonight as pressure gradient begins to ramp up again especially on the Lake Huron side. Small Craft Advisories have already been issued for the nearshore zones north of Sturgeon Point Light which is where the greatest probability of small craft conditions will occur through Friday. Will expand Lake Huron SC.A into the remaining zones starting Friday morning . and will probably need advisories for the Lake Michigan nearshore zones starting Friday afternoon.

APX WATCHES/WARNINGS/ADVISORIES. MI . NONE. LH . SMALL CRAFT ADVISORY from noon Friday to 5 AM EST Saturday for LHZ346-349. SMALL CRAFT ADVISORY until 5 AM EST Saturday for LHZ347-348. LM . NONE. LS . NONE.

NEAR TERM . JPB SHORT TERM . AS LONG TERM . AS AVIATION . JK MARINE . JPB


Weather Reporting Stations
   EDIT       (on/off)   Help   NOTE: Click on distance to see the station location on a map
Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
GTLM4 - Grand Traverse Light, MI 26 mi86 min NNE 5.1 G 7 27°F 1028.4 hPa
WSLM4 28 mi36 min NNW 12 22°F 1028.1 hPa5°F
PNLM4 - 9087096 - Port Inland, MI 32 mi48 min 23°F 1027.9 hPa
NABM4 - Naubinway, MI 35 mi86 min N 5.1 G 11 23°F 1027.1 hPa
MACM4 - 9075080 - Mackinaw City, MI 45 mi48 min NW 8.9 G 13 23°F 34°F1026.2 hPa7°F

Wind History for Port Inland, MI
(wind in knots)    EDIT      (on/off)   Help
Last
24hr
1 day
ago
2 days
ago

Airport Reports
    EDIT      (on/off)   Help   Click EDIT to display multiple airports. Follow links for more data.
AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Beaver Island, Beaver Island Airport, MI8 mi71 minNNE 310.00 miFair25°F10°F53%1028.1 hPa
Charlevoix, Charlevoix Municipal Airport, MI24 mi71 minN 810.00 miFair26°F13°F57%1027.8 hPa

Link to 5 minute data for KSJX

Wind History from SJX (wind in knots)
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
11
AM
12
PM
1
PM
2
PM
3
PM
4
PM
5
PM
6
PM
7
PM
8
PM
Last 24hrNW8
G17
N8
G17
N12
G15
NW8N7
G14
N7N6N9
G16
N10
G15
N11
G16
NE7
G15
NE6N7N7N8N6N8
G17
NW5N6N4NW8N4N6N4
1 day agoSW20
G31
SW16
G28
SW16
G24
SW14
G21
SW13
G18
W12
G17
SW7SW4W6W5CalmW3CalmNW3CalmNW7NW6NW9
G15
NW12
G16
NW11
G15
N9
G15
NW10
G19
N6
G16
NW7
G16
2 days agoNW9
G19
NW6
G17
NW8NW4W7W5CalmW8W9SW5S4SW6SW9S9SW11
G22
SW20
G27
SW17
G28
SW21
G29
SW22
G35
SW25
G35
SW24
G32
SW17
G30
SW21
G29
SW21
G36

Tide / Current Tables for
   EDIT   Weekend mode (on/off)   (on/off)   Help
Tide / Current Tables for
   EDIT      (on/off)   Help
Weather Map
       (on/off)   Help Weather Map
wmap_A
GEOS Local Image of    EDIT
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.
Link to Loop

Other links: GEOS-West     Contential US     Full GOES-East
Ground Weather Radar Station




Please read website Cookie, Privacy, and Disclamers by clicking HERE.