Tuesday, August20, 2019 L-36.com


Marine Weather and Tides
Detroit, MI

Version 3.4
NOTICE
7/25/2019 New feature in the Airports section gives a link to 5 minute updates for data reports.
6/2/2019. Many thanks to a user for reporting an error on one of the Edit pages. The switch to PHP 7.2 caused many pages that previously worked to quit working. I fixed many but I still depend on users to report ones I missed. Please report errors HERE or send an email to me at L-36.com. Allen

Sunrise 6:43AMSunset 8:28PM Tuesday August 20, 2019 11:51 AM EDT (15:51 UTC) Moonrise 10:08PMMoonset 10:27AM Illumination 75% Phase: Waning Gibbous; Moon at 20 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.0045.000000t0000z-190819t0130z/ 923 Pm Edt Sun Aug 18 2019
.the special marine warning will expire at 930 pm edt... The affected areas were... St. Clair river... Lake st. Clair. The Thunderstorms have moved out of the area and no longer pose a significant threat to boaters. Lat...lon 4289 8247 4276 8247 4261 8252 4255 8259 4256 8264 4254 8266 4246 8275 4245 8291 4254 8291 4259 8285 4266 8282 4272 8269 4270 8261 4265 8259 4265 8255 4276 8251 4289 8252 4298 8248 4300 8243 4297 8241 time...mot...loc 0122z 252deg 44kt 4283 8204 4271 8228 4259 8236
LCZ422 Expires:201908190132;;443306 FZUS73 KDTX 190123 MWSDTX Marine Weather Statement National Weather Service Detroit/Pontiac MI 923 PM EDT Sun Aug 18 2019 LCZ422-460-190132-


7 Day Forecast for Marine Location Near Detroit city, MI
   Hourly   EDIT   Help
location: 42.38, -83.1     debug


Area Discussion for - Detroit/Pontiac, MI
      (on/off)   Help   NOTE: mouseover dotted underlined text for definition
Fxus63 kdtx 201036
afddtx
area forecast discussion
national weather service detroit pontiac mi
636 am edt Tue aug 20 2019

Aviation
There is a weak sfc boundary draped across roughly the i-69
corridor. Ongoing low level moisture advection into this frontal
boundary has supported some isolated showers. The main push of low
level moisture and the lead edge of some steeper mid level lapse
rates into far SW lower mi early this am has resulted in a few
thunderstorms. The potential for thunderstorms impacting the
terminals through at least early afternoon is too low to include in
the tafs. An upper level short wave feature emerging out of the
convective complex over iowa will track across northern indiana this
afternoon. This system will drive a little better instability push
into SE mi this afternoon and will support at least a scattered
coverage of thunderstorms. The most probable time period for tsra
will be between 21z and 02z.

For dtw... .Low level moisture will develop into a sct to bkn
afternoon CU field, based between 4k and 5k ft per model soundings,
with the onset of daytime heating. There has been increasing
probabilities for thunderstorms around metro detroit late this
afternoon evening. Enough confidence to introduce thunderstorms in
the taf.

Dtw threshold probabilities
* moderate in ceilings at or below 5000 feet today.

* moderate in thunderstorms late this afternoon and evening.

Prev discussion
Issued at 342 am edt Tue aug 20 2019
discussion...

abundant low-level moisture is present along and south of i-69 with
dew points in the mid to upper 60s, resulting in a muggy night and
morning. Just enough moisture advection into the stalled frontal
boundary across the region has been able to touch off a few showers
overnight, while radiational cooling and light to calm winds has
allowed for patches of fog to develop across the region. Today will
be a hot and humid day as the moisture continues advecting northward
along with higher temperatures. Upstream obs suggest highs in the
mid to upper 80s are in store. Heat indices in the lower 90s can be
expected along and south of the i-69 corridor.

A well-advertised MCS is taking shape over northwest iowa this
morning and will act to enhance a shortwave in the westerly flow.

The 00z nam, wrf-arw, ecmwf, and rgem have moved toward the gfs
solution and trended southward with this wave mcv, tracking it
either along the mi oh in border or just south by this evening. A
modest 10-20 kt LLJ ahead of this will introduce a surge of unstable
air into SE michigan by the early afternoon. Appears there will be
enough lift via PVA and isentropic ascent during the afternoon to
result in isolated to scattered showers and storms. Model soundings
depict weak midlevel subsidence producing a modest cap around 700mb
which will limit some of the instability early in the day, but
impressive midlevel lapse rates of around 7 c km will contribute to
cape of 1250-2000 j kg by the late afternoon. Bulk shear on the
order of 20-25 kt and this amount of instability will allow for some
isolated stronger to possibly severe storms in a 2-9pm window. The
best chance for any stronger storms will be generally south of
i-96 696 where the greatest amount of instability resides, but the
threat will spread north if the instability can march farther north.

The instability will linger across the area with a slight chance of
showers and storms continuing tonight. A potent upper trough will
swing through the northern great lakes tomorrow afternoon evening,
pushing a cold front across the state during the afternoon and early
evening. This could provide a focus for more scattered showers and
storms, but soundings look relatively dry and the front may not have
much to work with. Additionally, forcing from the upper wave and jet
streak will be delayed displaced over the upper peninsula. The front
will however be very effective at delivering a much cooler and drier
air mass, with 850 mb temps falling from the mid teens to the mid
single digits c by Thursday morning. Strong subsidence will ensue
with a surface high drifting across the region during the late week
and weekend. Dry weather, highs in the 70s, and lows in the 50s can
be expected. A warming trend will commence by Sunday with return
flow bringing warmer air back north. The next chance for rain holds
off until the early week when longwave troughing begins to expand
across the central conus.

Marine...

high pressure will depart the region to the east today. The gradient
will still remain weak across the great lakes, so south to southeast
winds in the wake of the high will be light. A cold front will drop
south across the region on Wednesday. The gradient along the front
will remain weak, so overall winds will be light. The passage of the
front will be marked by a veering of the winds to the northwest. A
push of cooler post frontal air will then arrive across lake huron
late Wednesday and will result in an increase in the northwest
winds. A strengthening north-northwest gradient within a push of
colder low level air will affect all of the lakes Wed night. Winds
and waves will decrease slightly late Thursday into Friday as high
pressure nudges into the region from the northwest.

Dtx watches warnings advisories
Mi... None.

Lake huron... None.

Lake st clair... None.

Michigan waters of lake erie... None.

Aviation... ..Sc
discussion... Tf
marine... ... .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 13 mi51 min SE 7 G 8.9 77°F 1018.3 hPa (+0.4)
45147 - Lake St Clair 23 mi51 min Calm 76°F 75°F1 ft1017.5 hPa (+0.3)
AGCM4 35 mi57 min 77°F 74°F1018.3 hPa
THLO1 - Toledo Light No. 2 OH 39 mi71 min SE 8 G 8 77°F
45165 48 mi31 min ENE 5.8 G 5.8 79°F 78°F72°F
TWCO1 48 mi31 min ESE 6 G 8 76°F
THRO1 - 9063085 - Toledo, OH 51 mi57 min S 4.1 G 6 82°F 1018 hPa70°F

Wind History for Toledo, OH
(wind in knots)    EDIT      (on/off)   Help
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
11
AM
Last
24hr
E3
E3
NE3
E6
E8
SE6
G9
SW2
SW3
NE1
NE2
SW1
SW1
S2
S2
S4
S6
G9
S4
G7
SW1
--
S1
S2
S5
G8
S4
S2
1 day
ago
SW10
G15
SW5
G10
NW9
G14
W2
G5
SW4
S3
G8
SW3
S2
G5
SW3
NW21
G31
W8
G13
W8
G12
SW5
G12
SW6
G9
W4
W5
W4
SW4
G7
W4
G7
W6
W5
NW3
W3
NW2
2 days
ago
W2
G5
SW5
G9
W4
G7
SW4
G7
SW7
G11
S2
SW3
SW3
S3
G6
SW3
SW5
G8
S3
G6
SW5
G8
SW4
G7
SW4
W4
S3
SW3
G6
S3
G6
S4
G7
S6
SW8
G11
SW8
G13
S7
G10

Airport Reports
    EDIT      (on/off)   Help   Click EDIT to display multiple airports. Follow links for more data.
AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Coleman A Young Municipal Airport, MI5 mi58 minS 910.00 miFair83°F69°F63%1017.5 hPa
Troy, Oakland/Troy Airport, MI12 mi56 minS 410.00 miPartly Cloudy84°F71°F66%1018.3 hPa
Detroit, Detroit Metropolitan Wayne County Airport, MI16 mi58 minS 710.00 miOvercast82°F70°F67%1017.7 hPa
Detroit/Grosse Ile, Grosse Ile Airport, MI20 mi56 minSSE 410.00 miFair79°F74°F87%1017.9 hPa
Selfridge Air National Guard Base, MI22 mi1.9 hrsSSE 510.00 miMostly Cloudy76°F76°F100%1017.8 hPa

Link to 5 minute data for KDET

Wind History from DET (wind in knots)
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
11
AM
Last 24hrNW3NW3SE65--SW7SW10S6S8S6S4SW4--------S5SW3CalmCalmCalmS7S6S9
1 day agoS10
G18
SW10
G16
W17
G36
SW12
G16
S11S14S8S10SW10W13
G25
SW10SW6SW6SW12
G17
--W9----W3W4CalmCalm4--
2 days agoW105
G18
W9
G25
W9
G16
3
G20
SW9SW7S8SW11
G20
S6SW6S3S3NE5CalmE3--CalmCalmS4Calm----S13

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 (11,2,3,4)
      (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.