Monday, May20, 2019 L-36.com


Marine Weather and Tides
Grosse Pointe Park, MI

Version 3.4
What's New / NOTES
10/6/2018 Colors of tide XTide graphs changed to emphasize that they were upgraded. See next note. Comments welcome.
10/4/2018 I have fixed XTide and updated the harmonic files. There were some name changes so you might have to click EDIT to find the new station name.

Sunrise 6:04AMSunset 8:52PM Monday May 20, 2019 3:17 AM EDT (07:17 UTC) Moonrise 9:52PMMoonset 6:33AM Illumination 98% Phase: Waning Gibbous; Moon at 16 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
LCZ422 /o.exp.kdtx.ma.w.0002.000000t0000z-190519t1945z/ 345 Pm Edt Sun May 19 2019
.the special marine warning will expire at 345 pm edt... The affected areas were... Harbor beach to port sanilac mi... Lake huron from harbor beach to port sanilac 5nm off shore to us/canadian border... Lake huron from port sanilac to port huron 5nm off shore to us/canadian border... Lake st. Clair open lake (u.s. Portion)... Port sanilac to port huron mi... St. Clair river... The Thunderstorms have weakened and no longer pose a significant threat to boaters. Lat...lon 4292 8246 4278 8247 4258 8256 4254 8266 4238 8282 4236 8288 4237 8289 4239 8295 4266 8285 4272 8269 4270 8261 4264 8256 4265 8255 4303 8248 4377 8265 4388 8272 4389 8268 4384 8264 4385 8218 4359 8212 time...mot...loc 1944z 240deg 55kt 4428 8227 4399 8195 4381 8190 4301 8188
LCZ422 Expires:201905191954;;129531 FZUS73 KDTX 191945 MWSDTX Marine Weather Statement National Weather Service Detroit/Pontiac MI 345 PM EDT Sun May 19 2019 LCZ422-460-LHZ442-443-463-464-191954-


7 Day Forecast for Marine Location Near Grosse Pointe Park city, MI
   Hourly   EDIT   Help
location: 42.34, -82.94     debug


Area Discussion for - Detroit/Pontiac, MI
      (on/off)   Help   NOTE: mouseover dotted underlined text for definition
Fxus63 kdtx 200358
afddtx
area forecast discussion
national weather service detroit pontiac mi
1158 pm edt Sun may 19 2019

Aviation
A cold front will slip across southeast michigan overnight. The
cool moist post-frontal environment will support the expansion of
lower stratus during the early-mid morning hours. This will likely
result in a period of MVFR lasting well into Monday. West-southwest
winds in the wake of the front overnight, veering to westerly and
turning gusty on Monday. Noting the extensive stratus upstream,
clearing potential unlikely until late Monday into early Monday
night.

Dtw threshold probabilities
* low in ceilings at or below 5000 feet tonight. High Monday morning
and afternoon.

Prev discussion
Issued at 311 pm edt Sun may 19 2019
discussion...

convection anchored to the incoming h5 wind MAX and lead mid-level
isentropic ascent is unfolding in a manner consistent with
expectations thus far this afternoon. Updraft intensity is limited
due to poor lapse rates while storms have increasingly been able to
root in the boundary layer with eastward progress. A couple of cells
have demonstrated organized low-level rotation indicative of an
environment supportive of weak tornado threat as well. The
convection will maintain this character until it exits east by about
4pm.

Stratiform rain with a few embedded convective elements will trail
the current broken convective line and likely linger in some fashion
until at least 6pm local time. Boundary layer recovery is underway
in the wake of this line as temperatures are back in the 70s along
the lake michigan shoreline and far northwest indiana. Although
improved insolation won't reach SE michigan until late in the
diurnal cycle, the strong southwesterly wind field may be sufficient
to advect modest instability into the CWA even as solar heating
wanes. Improved mid-level forcing associated with the incoming pv
anomaly may provide an added boost as well. Convection entering our
westernmost counties during this period will encounter hodographs
exhibiting noticeably more 0-1km curvature than suggested by
yesterday's progs. Thus, while any sw-ne moving convection which
organizes perpendicular to the mean wind vector will likely still
acquire a character similar to this afternoon's activity in the
thumb, cells with a stronger eastward component may benefit from
improved & more accessible 0-1km SRH (250+ j kg) not present with
this afternoon's activity. Thus, both a wind and tornado threat will
exist mainly west of us-23 in the aforementioned time window. The
same wind tor threat also exists for locations east of us-23 but
carries more uncertainty due to instability time of day concerns,
the exception being the southernmost tier of counties where surface
instability climatologically persists longer.

Cold front readily apparent in regional obs defined by a transition
to deep layer westerly flow and temperatures in the 40s and low 50s
over the upper ms river valley at press time. 850mb temps behind the
front will fall into the mid single digits by Monday morning and
near 0c by Mon aftn. Ongoing cold advection and abundant boundary
layer clouds will limit temperatures to the 50s to go along with
gusty westerly winds. Little change in the existing airmass by early
Tuesday morning, but increasing confluent flow aloft will scour out
clouds and allow temps rebound into the mid 60s.

A ridge of high pressure will be over the great lakes region
throughout the day Tuesday before sliding eastward into canada
Tuesday night into Wednesday morning. The warm front from a strong
surface low over the plains begins to move into SE mi late afternoon
into evening Wednesday. This will bring shower and thunderstorm
chances during that same timeframe. The front will advect much
warmer air into the area with summer-like temperatures Thursday and
Friday. Shower and storm chances return Thursday night through
Saturday as a weak shortwave south of the hudson bay tracks eastward
and an additional low begins to develop over the plains and move
north-northeast.

Marine...

low pressure will travel northeast from lake michigan into the
georgian bay tonight which will allow southerly winds to hold across
the lakes, gusting up to 20-25 knots at times. This increase in wind
speed has resulted in the issuance of small craft advisories for the
shorelines of lake huron, lake st. Clair, and the western shoreline
of lake erie. Lingering warm front may also result in marine fog.

The passage of the low pressure system will then drive a cold front
across the great lakes late tonight and overnight, eventually
shifting winds from the south to the west southwest. Both the warmer
air and and passage of the cold front will bring the chance for
showers and thunderstorms, some strong, this afternoon and evening.

Otherwise, breezy westerly conditions will fill in behind the cold
front tomorrow morning and afternoon, gusting up to 20-25 knots,
which may result in another issuance of small craft advisories.

Hydrology...

rain and thunderstorm chances continue this afternoon and evening as
a low pressure system travels northeast tonight from lake michigan
into the georgian bay. Due to the scattered nature and varying
strength of storms, rainfall amounts will be highly variable across
se mi. In general, a tenth to a half-inch of accumulation will be
possible with today's precipitation, with isolated amounts up to or
in excess of an inch possible with any strong thunderstorms.

Otherwise, all precipitation is expected to move out of the area
after midnight, leading to a dry Monday.

Lastly, flooding concerns continue along lake st. Clair shorelines
this afternoon into tonight as gusty winds hold from the south. Wind
direction will drive waters northward with the already high lake
levels to result in lakeshore flooding concerns from lake st. Clair
metropark north to anchor bay and across to harsens island.

Dtx watches warnings advisories
Mi... Lakeshore flood advisory until 4 am edt Monday for miz063-070.

Lake huron... Small craft advisory until 10 am edt Monday for lhz421-441.

Lake st clair... None.

Michigan waters of lake erie... None.

Aviation... ..Mr
discussion... Jvc kdk
marine... ... .Sc
hydrology... .Sc
you can obtain your latest national weather service forecasts online
at

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
CLSM4 - St. Clair Shores, MI 10 mi77 min WSW 8 G 13 63°F 1007.1 hPa (-0.0)
45147 - Lake St Clair 15 mi77 min SW 7.8 G 7.8 55°F 50°F1 ft1005.7 hPa (-0.4)
AGCM4 29 mi35 min 61°F 49°F1006.1 hPa
THLO1 - Toledo Light No. 2 OH 38 mi137 min SW 15 G 16 62°F
45165 47 mi37 min SW 5.8 G 5.8 62°F 58°F1 ft59°F
TWCO1 47 mi27 min E 12 G 13 64°F 1004.3 hPa61°F
SBIO1 - South Bass Island, OH 49 mi77 min WSW 17 G 18 62°F 1007.4 hPa (+0.7)

Wind History for Toledo, OH
(wind in knots)    EDIT      (on/off)   Help
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
9
PM
10
PM
11
PM
12
AM
1
AM
2
AM
3
AM
Last
24hr
S3
S4
S6
G9
S7
G10
S9
G13
S10
G17
SW13
G21
SW14
G19
SW18
G27
S12
G20
S17
G27
S13
G23
SW9
G16
SW8
G11
S11
G14
S15
S9
G16
S10
G17
SW9
G16
SW5
G11
SW8
G12
SW7
G11
W5
G9
W6
G10
1 day
ago
E6
G9
E6
E6
G11
E7
G10
E10
E11
G16
E11
G14
E9
G12
NE7
NE6
G9
NE6
NE4
G8
NE8
E11
E8
NE5
NE6
E3
SE4
S6
S4
G8
W3
SE2
S4
2 days
ago
W5
G8
W7
G11
W4
G7
NW5
NE6
G10
NE9
G12
NE5
G8
NE5
G8
E5
G8
NE7
E13
E9
E7
E10
E11
G16
SE4
E7
SE5
G8
E5
E6
E7
G10
E6
G9
E6

Airport Reports
    EDIT      (on/off)   Help   Click EDIT to display multiple airports
AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Coleman A Young Municipal Airport, MI8 mi24 minWSW 710.00 miFair62°F54°F75%1006.2 hPa
Troy, Oakland/Troy Airport, MI19 mi22 minWSW 610.00 miFair59°F54°F85%1006.8 hPa
Selfridge Air National Guard Base, MI20 mi21 minSW 610.00 miFair60°F59°F100%1006 hPa
Detroit/Grosse Ile, Grosse Ile Airport, MI20 mi21 minWSW 410.00 miFair61°F58°F91%1007.1 hPa
Detroit, Detroit Metropolitan Wayne County Airport, MI22 mi24 minWSW 810.00 miFair61°F54°F78%1006.9 hPa

Wind History from DET (wind in knots)
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
9
PM
10
PM
11
PM
12
AM
1
AM
2
AM
Last 24hrN3E4E4CalmCalmSE4S7SW12S16
G22
S12S15
G26
S18
G27
S14
G25
W15
G23
SW10SE5S14
G21
S10
G19
S9S7SW7S4SW8W9
1 day agoCalmNE3NE5E5E5CalmE5SE7SE8SE7SE6E8E7E7SE7E4E6SE9SE6SE6E5CalmCalmCalm
2 days agoW6W4NE9NE6NE5E4NE6NE6E9E8E86E8NE7E6E7SE8NE8E7E4CalmCalmNE4Calm

Tide / Current Tables for
   EDIT   Weekend mode (on/off)   (on/off)   Help
Tide / Current Tables for
   EDIT      (on/off)   Help
Weather Map and Satellite Images
       (on/off)   HelpWeather Map
wmap_A
GOES Local Image of GreatLakes    EDIT
NOTE: East coast views moved to GEOS-16. They are experimental and not well supported by NOAA so they may not be correct so be warned. This change required redoing a large amount of the GOES code. If the image you are expecting is not showing, please let me know. You may need to use the EDIT function to update your location.
Link to Loop

Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for Detroit/Pontiac, MI (3,6,7,8)
      (on/off)   Help

Ground Weather Radar Station Detroit, MI
   (on/off)   Help
weather_mapweather_map weather_map

Ad by Google

Disclaimer:
The information on this web site has not been checked for accuracy. It is for entertainment purposes only and should be independently verified before using for any other reason. There are five sources. 1) Documents and manuals from a variety of sources. These have not been checked for accuracy and in many cases have not even been read by anyone associated with L-36.com. I have no idea of they are useful or accurate, I leave that to the reader. 2) Articles others have written and submitted. If you have questions on these, please contact the author. 3) Articles that represent my personal opinions. These are intended to promote thought and for entertainment. These are not intended to be fact, they are my opinions. 4) Small programs that generate result presented on a web page. Like any computer program, these may and in some cases do have errors. Almost all of these also make simplifying assumptions so they are not totally accurate even if there are no errors. Please verify all results. 5) Weather information is from numerious of sources and is presented automatically. It is not checked for accuracy either by anyone at L-36.com or by the source which is typically the US Government. See the NOAA web site for their disclaimer. Finally, tide and current data on this site is from 2007 and 2008 data bases, which may contain even older data. Changes in harbors due to building or dredging change tides and currents and for that reason many of the locations presented are no longer supported by newer data bases. For example, there is very little tidal current data in newer data bases so current data is likely wrong to some extent. This data is NOT FOR NAVIGATION. See the XTide disclaimer for details. In addition, tide and current are influenced by storms, river flow, and other factors beyond the ability of any predictive program.