Wednesday, June20, 2018 L-36.com


Marine Weather and Tides
Dauphin Island, AL

Version 3.4
What's New / NOTES
5/20/2018 -- NOAA is having problems with the data feed that I use to draw the graphs. They are aware of the issue and working to resolve it. Sometimes changing the location by about a mile will give a correct graph. 3/3/2018 - There is a new GOES Satellite for the east coast that required rewriting that part of the code. Please report any issues.

Sunrise 5:48AMSunset 7:58PM Wednesday June 20, 2018 7:40 PM CDT (00:40 UTC) Moonrise 1:10PMMoonset 1:03AM Illumination 51% Phase: First Quarter Moon; Moon at 8 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
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GMZ631 Southern Mobile Bay-mississippi Sound- 339 Pm Cdt Wed Jun 20 2018
Tonight..Southwest winds 8 to 13 knots. Waves around 1 foot. Isolated showers and Thunderstorms in the evening.
Thursday..Southwest winds 8 to 13 knots increasing to 10 to 15 knots. Waves around 1 foot. Slight chance of showers and Thunderstorms.
Thursday night..Southwest winds 10 to 15 knots. Waves around 1 foot. Slight chance of showers and Thunderstorms.
Friday..Southwest winds 10 to 15 knots. Waves around 1 foot. Slight chance of showers and Thunderstorms.
Friday night..Southwest winds 10 to 15 knots. Waves around 1 foot.
Saturday..Southwest winds 10 to 15 knots becoming south. Waves around 1 foot.
Saturday night..Southwest winds 10 to 15 knots. Waves around 1 foot.
Sunday..Southwest winds 8 to 13 knots. Waves around 1 foot. Slight chance of showers and Thunderstorms.
Sunday night..Southwest winds 8 to 13 knots. Waves less than 1 foot.
Monday..Southwest winds 5 to 10 knots. Waves less than 1 foot. Chance of showers and Thunderstorms.
Monday night..Southwest winds 3 to 8 knots. Waves less than 1 foot. Slight chance of showers and Thunderstorms.
GMZ600 Synopsis For Pascagoula Ms To Okaloosa Walton County Line Fl Out 60 Nm Including Major Area Bays And Sounds- 339 Pm Cdt Wed Jun 20 2018
Synopsis..A light to occasionally moderate southwest flow will generally prevail over the marine area through early next week as high pressure ridges westward across the northern gulf. Southwesterly flow will increase Thursday night into early Saturday with a slight build in seas.

7 Day Forecast for Marine Location Near Dauphin Island, AL
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location: 30.25, -88.08     debug


Area Discussion for - Mobile/Pensacola, FL
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Fxus64 kmob 202321
afdmob
area forecast discussion
national weather service mobile al
621 pm cdt Wed jun 20 2018

Discussion Updated for latest aviation discussion below.

Aviation
00z issuance...VFR conditions and generally light southwest winds
prevail through the period. Scattered showers and thunderstorms
develop during afternoon and evening hours. Stronger storms will
be capable of producing frequent lightning and gusty winds, as
well as locally lower CIGS vis due to heavy rain. 49

Prev discussion issued 358 pm cdt Wed jun 20 2018
near term now through Thursday ... Currently, upper level high
pressure is centered over the northeastern gulf of mexico, with an
upper ridge stretching north along the mississippi river. An upper
trough stretches south across the central southern plains from an
upper low over the northern plains. A surface ridge stretches north
over the eastern gulf of mexico, over the lower mississippi river
valley and western portions of the southeast. Looking at moisture
levels over the area, analysis' show a band of higher precip h20
levels (>2") stretching southwest across the forecast area attm. A
northward moving seabreeze off the gulf is initiating isolated tsra
along the i10 corridor in this band of higher moisture levels. A
bay breeze moved off mobile bay and is spreading east west from the
bay mobile river.

Looking ahead in time, guidance is advertising our usual summer
progression this afternoon into this evening, with shra tsra
developing inland as the gulf breeze outflow boundaries spread
inland. Coverage is expected to be generally isolated over most of
the forecast area, with a bit of an increase in coverage as one
moves northwest due to less influence from the upper high counter-
balancing the high moisture levels. More activity is expected to
develop south of the coast tonight as a land breeze sets up and
moves south of the coast. For tonight's lows, with the upper
high ridge maintaining control, above seasonal temps continue.

Thursday, guidance is advertising a lobe of energy swinging around
the base of the northern plains upper low, pushing the upper trough
west of the forecast area eastward. With that comes increased cloud
cover and rain beginning to affect western portions of the forecast
area. Helping to limit rain chances east of the alabama river is a
band of drier air (well, precip h20 levels < 2") along the upper
ridge. Guidance is inconsistent with the eastward location strength
of the approaching upper trough, with the GFS the wettest farthest
east, the ECMWF the driest farthest west. Have leaned towards the
middle of the road NAM and added in a bit of the ecmwf, with the
upper ridge remaining a slowing factor to the eastward moving upper
trough. With that in mind, a gradient of pops maxts is in the grids
for Thursday, with higher pops lower maxts northwest, lower
pops higher maxts southeast. Looking at model soundings, enough
instability will be present Thursday for the usual possible strong
to severe storm or two, with stronger winds the primary issue.

Wetbulb "0" heights remain above 14k', so damaging hail will be hard
to realize on Thursday afternoon.

16 sam
short term Thursday night through Saturday night ... Broad upper
trough remains over the region through most of the short term
period. This weakness aloft, combined with continued deep layer
moisture in the low to mid levels of the atmosphere will continue
the trend of mostly afternoon and early evening showers and
thunderstorms across the region. Expect mainly chance pops through
the period, as low level ridging keeps convection scattered in
nature across the area. Will have to monitor for any shortwave
energy rounding the base of the upper trough, as timing and
strength of these potential systems could aid in the development
of slightly better coverages of showers and storms than what we
have advertised. Otherwise, continued summer pattern. Hot daytime
temperatures primarily in the lower 90s through the period, with a
few upper 80s along the immediate coast. Heat index values will
continue to top out in the 100-104 range in many areas each
afternoon. Nighttime lows in the low to mid 70s. 12 ds
long term Sunday through Wednesday ... The upper trough begins to
lift out late on Saturday with upper ridging building back over
the area through Wednesday. This will return the area to a more
isolated to low-end scattered diurnal pop pattern. Highs will
remain in the low 90s with heat index values in the 100-105 range
each day. 12 ds
marine... An approaching upper trough will shift a surface ridge
over the eastern gulf southward, to a westward stretching surface
ridge over the central gulf. Flow remains a light to at time
moderate southwesterly the rest of the week through the weekend as a
result. Upper level high pressure will develop over the northern
gulf coast Sunday night into Monday, bringing weak surface high
pressure over the northern gulf and light and variable winds for the
beginning of the week. 16 sam

Mob watches warnings advisories
Al... None.

Fl... None.

Ms... None.

Gm... None.

This product is also available on the web at:
http: weather.Gov mob


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
DPIA1 - Dauphin Island, AL 0 mi41 min SW 5.1 G 7 85°F 1012.7 hPa (-0.8)74°F
FMOA1 - 8734673 - Fort Morgan, AL 3 mi41 min SW 8 G 8.9 84°F
CRTA1 - Cedar Point, AL 5 mi71 min SSW 8 85°F 1012.5 hPa
KATA1 - Katrina Cut, AL 7 mi71 min SW 7 85°F 1012.9 hPa
MBLA1 - Middle Bay Light, AL 13 mi71 min SSW 12 85°F 1012.5 hPa
WBYA1 18 mi41 min 89°F
WKXA1 - Weeks Bay Reserve, AL 18 mi56 min 87°F 1012 hPa75°F
GDXM6 - Grand Bay Reserve, MS 20 mi56 min SSW 6 85°F 1014 hPa74°F
PTBM6 - 8741003 - Petit Bois Island, MS 23 mi41 min S 6 G 8 84°F 1013.5 hPa (-1.0)
PNLM6 - 8741533 - Pascagoula NOAA Lab, MS 27 mi41 min 85°F
MCGA1 - 8736897 - Coast Guard Sector Mobile, AL 28 mi41 min SW 2.9 G 5.1 86°F 85°F1012.5 hPa (-0.8)
PPTA1 28 mi41 min 86°F 1013.2 hPa (-0.7)
PTOA1 29 mi41 min 88°F 74°F
MHPA1 - Meaher Park, AL 30 mi41 min S 8.9 86°F 1012.9 hPa (-0.0)
42012 - Orange Beach AL Buoy 31 mi31 min WSW 7.8 G 9.7 85°F 1012.7 hPa76°F
OBLA1 - 8737048 - Mobile State Docks, AL 32 mi41 min 88°F 85°F1012.3 hPa (-0.9)
PCLF1 - 8729840 - Pensacola, FL 47 mi41 min SW 6 G 9.9 88°F 88°F1012.6 hPa (-0.7)

Wind History for Dauphin Island, AL
(wind in knots)    EDIT      (on/off)   Help
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Sonny Callahan Airport, AL18 mi66 minN 010.00 miFair84°F77°F79%1012.5 hPa
Jack Edwards Airport, AL22 mi66 minWSW 610.00 miFair86°F72°F65%1012.5 hPa

Wind History from CQF (wind in knots)
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Last 24hrCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmSW4W3S3SW3SW4SW3Calm
1 day agoCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmNE4NE4E5NE7E3SW4CalmS4S7SW3SW3Calm
2 days agoCalmCalmNE3NE3CalmE3CalmCalmCalmE3CalmCalmE4E4E4E8SE7SE10NE3SE5S3S5S5Calm

Tide / Current Tables for Dauphin Island, Mobile Bay, Alabama
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Dauphin Island
Click for Map
Wed -- 01:02 AM CDT     Moonset
Wed -- 01:44 AM CDT     0.21 feet Low Tide
Wed -- 05:50 AM CDT     Sunrise
Wed -- 05:52 AM CDT     First Quarter
Wed -- 01:09 PM CDT     Moonrise
Wed -- 02:03 PM CDT     0.78 feet High Tide
Wed -- 07:56 PM CDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0.30.20.20.20.30.30.40.50.60.60.70.70.80.80.80.80.80.70.70.60.60.50.40.4

Tide / Current Tables for Mobile Bay Entrance, Alabama Current
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Mobile Bay Entrance
Click for Map
Wed -- 01:02 AM CDT     Moonset
Wed -- 03:47 AM CDT     0.00 knots Slack
Wed -- 05:50 AM CDT     Sunrise
Wed -- 05:52 AM CDT     First Quarter
Wed -- 09:35 AM CDT     0.92 knots Max Flood
Wed -- 01:09 PM CDT     Moonrise
Wed -- 04:04 PM CDT     -0.00 knots Slack
Wed -- 07:56 PM CDT     Sunset
Wed -- 09:24 PM CDT     -0.77 knots Max Ebb
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
-1-0.8-0.5-0.20.10.30.60.70.90.90.90.90.80.60.40.20-0.2-0.4-0.6-0.7-0.8-0.8-0.7

Weather Map and Satellite Images
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wmap_A
GOES Local Image of    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.
target = "new">Link to Loop

Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for Mobile/Pensacola, FL (20,4,5,8)
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Ground Weather Radar Station Mobile, AL
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weather_mapweather_map weather_map

Gulf Stream Current


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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.