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Marine Weather and Tides
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7/21/2018 Trying to make page Mobile Friendly |
| Sunrise 6:27AM | Sunset 7:38PM | Saturday August 18, 2018 11:25 AM CDT (16:25 UTC) | Moonrise 1:49PM | Moonset 12:10AM | Illumination 47% |  |
GMZ534 Lake Borgne- 1029 Am Cdt Sat Aug 18 2018
Rest of today..Southwest winds 5 to 10 knots. Waves 1 foot or less. Dominant period 4 seconds. Chance of showers and Thunderstorms late in the morning, then showers and Thunderstorms likely in the afternoon.
Tonight..Southwest winds 5 to 10 knots. Waves 1 to 2 feet. Dominant period 4 seconds. Chance of showers and Thunderstorms.
Sunday..Southwest winds 5 to 10 knots. Waves 1 to 2 feet. Dominant period 4 seconds. Showers and Thunderstorms likely in the morning, then chance of showers and Thunderstorms in the afternoon.
Sunday night..Southwest winds 5 to 10 knots. Waves 1 foot or less. Dominant period 4 seconds. Chance of showers and Thunderstorms.
Monday..South winds 5 to 10 knots. Waves 1 foot or less. Dominant period 4 seconds. Chance of showers and Thunderstorms.
Monday night..Southwest winds 5 to 10 knots. Waves 1 foot or less. Dominant period 4 seconds. Slight chance of showers and Thunderstorms.
Tuesday..West winds 5 to 10 knots. Waves 1 foot or less. Dominant period 4 seconds. Chance of showers and Thunderstorms.
Tuesday night..Northwest winds 5 to 10 knots. Waves 1 foot or less. Dominant period 4 seconds. Chance of showers and Thunderstorms.
Wednesday..Northwest winds 5 to 10 knots. Waves 1 foot or less. Dominant period 4 seconds. Chance of showers and Thunderstorms.
Wednesday night..North winds 5 to 10 knots. Waves 1 foot or less. Slight chance of showers and Thunderstorms.
Rest of today..Southwest winds 5 to 10 knots. Waves 1 foot or less. Dominant period 4 seconds. Chance of showers and Thunderstorms late in the morning, then showers and Thunderstorms likely in the afternoon.
Tonight..Southwest winds 5 to 10 knots. Waves 1 to 2 feet. Dominant period 4 seconds. Chance of showers and Thunderstorms.
Sunday..Southwest winds 5 to 10 knots. Waves 1 to 2 feet. Dominant period 4 seconds. Showers and Thunderstorms likely in the morning, then chance of showers and Thunderstorms in the afternoon.
Sunday night..Southwest winds 5 to 10 knots. Waves 1 foot or less. Dominant period 4 seconds. Chance of showers and Thunderstorms.
Monday..South winds 5 to 10 knots. Waves 1 foot or less. Dominant period 4 seconds. Chance of showers and Thunderstorms.
Monday night..Southwest winds 5 to 10 knots. Waves 1 foot or less. Dominant period 4 seconds. Slight chance of showers and Thunderstorms.
Tuesday..West winds 5 to 10 knots. Waves 1 foot or less. Dominant period 4 seconds. Chance of showers and Thunderstorms.
Tuesday night..Northwest winds 5 to 10 knots. Waves 1 foot or less. Dominant period 4 seconds. Chance of showers and Thunderstorms.
Wednesday..Northwest winds 5 to 10 knots. Waves 1 foot or less. Dominant period 4 seconds. Chance of showers and Thunderstorms.
Wednesday night..North winds 5 to 10 knots. Waves 1 foot or less. Slight chance of showers and Thunderstorms.
GMZ500 Synopsis Pascagoula To Sw Pass Mississippi- Synopsis Sw Pass Mississippi River To Atchafalaya River- 1029 Am Cdt Sat Aug 18 2018
Synopsis..A ridge of high pressure will prevail over the northern gulf of mexico through the weekend into early next week. A cold front will enter the coastal waters on Wednesday.
Synopsis..A ridge of high pressure will prevail over the northern gulf of mexico through the weekend into early next week. A cold front will enter the coastal waters on Wednesday.
7 Day Forecast for Marine Location Near Slidell, LA
Hourly EDIT Helplocation: 30.27, -89.79 debug
Area Discussion for - New Orleans/Baton Rouge, LA
(on/off) Help NOTE: mouseover dotted underlined text for definition| Fxus64 klix 181404 afdlix area forecast discussion national weather service new orleans la 904 am cdt Sat aug 18 2018 Sounding discussion The column is generally quite moist with a pwat of 2.23 inches, around the same as the past 2 days, with a prominent dry slot around 450mb. It is also above the daily mean of 1.88 inch for this day. MLCAPE at 1883 j kg and relatively low convt indicates storms should have no problem forming given sufficient forcing. Cin is present at the surface (-150 j kg) but will likely erode quickly as temps warm up. Winds are generally light throughout the column, with the surface at about 15 knots wsw. It speeds up to 25-30 knots and becomes mostly southerly near the top. -bl Prev discussion issued 405 am cdt Sat aug 18 2018 short term... old outflow boundaries exist in most locations this morning. This can act to initiate sh TS and should be able to do so today once heating begins. Should still get a crop of sh TS moving in from the gulf during the morning, maybe not as many as yesterday. Thunderstorms today through much of the upcoming week will be capable of very heavy rainfall in a short period causing some flooding of low lying and poor drainage areas and roadways will definitely make that list. Guidance is still advertising a cold front to move into the area by mid week dropping temps down into the mid to upper 80s with no dense cloud cover. For this time of year, that is relatively strong cool air advection. Dry air will also accompany the front bringing dp temps back down to the mid 60s. This would only last a day maybe two at the most around wed. The moisture surges back to the north once again by the end of the work week bringing the warmth, humidity and sh TS back to the area. By next weekend, deep easterlies will develop again and at least one if not two easterly waves will bring a better chance of sh ts to the area possibly by the end of next weekend or into the new week. Easterly waves affecting the area are very normal for august but an actual cold front with cooler temps is not but we will take it. Aviation... forecast scenario is little changed from the past several days. ExpectVFR conditions to predominate through the forecast period outside of convective activity. A little less convection noted over the coastal waters at 08z compared to the past 2 mornings, so pre- dawn convection may not be quite as common as the past 2 mornings. Will tend to use vcts with only a 4 hour window of tempo in most terminals today, as instantaneous areal coverage of convection may not be much more than 30-40 percent. If convection is expected to directly impact a terminal, ifr or lower conditions will be possible, with wind gusts to 30 knots or so. Most convection should |
run out of steam around 00z-01z, with a restart of coastal convection Sunday morning around 10z. 35 marine... high pressure will remain centered east of the waters through early next week. As a result, a prevailing onshore flow of 5 to 10 knots is expected across most of the coastal waters through the period. The only exception will be over the nearshore waters off the mississippi coast where a seabreeze is expected to develop each day. This could induce some stronger onshore winds of 10 to 15 knots for a few hours each afternoon across the mississippi and chandeleur sounds. Seas will range from 1 to 2 feet through the entire period across all of the waters. Medium range models do depict at least a brief period of northerly winds late Wednesday with a cold frontal passage, but no strong winds indicated with this frontal passage outside of convection. 35 decision support... dss code: green. Deployed: none. Activation: none. Activities: none. Decision support services (dss) code legend green = no weather impacts that require action. Blue = long-fused watch, warning, or advisory in effect or high visibility event; marginal risk severe or excessive rain. Yellow = heightened impacts with short-fused watch, warning or advisory issuances; radar support for slight risk severe or excessive rain. Orange = high impacts; enhanced risk severe; nearby tropical events; hazmat or other large episodes. Red = full engagement for moderate to high risk of severe and or excessive rainfall, or direct tropical threats; events of national significance. Preliminary point temps pops Mcb 90 73 90 73 70 20 60 30 btr 91 75 90 75 60 20 60 30 asd 90 76 90 76 60 30 70 40 msy 90 77 90 77 60 30 70 30 gpt 89 77 89 77 70 30 70 40 pql 89 76 90 76 70 40 70 40 Lix watches warnings advisories La... None. Gm... None. Ms... None. Gm... None. |
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 |
| NWCL1 - 8761927 - New Canal, LA | 24 mi | 44 min | SW 4.1 G 5.1 | 85°F | 87°F | 1018.4 hPa | ||
| WYCM6 - 8747437 - Bay Waveland Yacht Club, MS | 25 mi | 44 min | S 6 G 13 | 80°F | 86°F | 1019 hPa | ||
| SHBL1 - 8761305 - Shell Beach, LA | 28 mi | 44 min | S 11 G 13 | 80°F | 89°F | 1019.3 hPa | ||
| CARL1 | 30 mi | 38 min | 86°F | |||||
| FREL1 | 35 mi | 44 min | SW 5.1 G 7 | 86°F | 1017.2 hPa | |||
| BYGL1 - 8762482 - Bayou Gauche, LA | 47 mi | 44 min | SE 4.1 G 6 | 85°F | 87°F | 1018.7 hPa |
Wind History for New Canal Station, LA
(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 | E | -- | S | SW | S | SE G4 | E | SW | S | S | SE | SW | S | S | S G8 | SW | S | SW | SW | SW | SW | S | SW G11 | SW G9 |
| 1 day ago | E | NE | E G5 | SE G8 | SE G7 | SE G10 | S G10 | SW | S | S | SW | S | S | SW | S | SE | S | S | SW | SW | N | NE | W | N |
| 2 days ago | N | N | N | E | S G5 | SE G8 | S | SW | S | S | S | S | S | SE | SE | SE | S | S | S | S | S | W | N | NE G14 |
Airport Reports
EDIT (on/off) Help Click EDIT to display multiple airports| Airport | Dist | Age | Wind kt | Visibility | Sky/Weather | Temp | DewPt | Humidity | Pressure |
| Slidell, Slidell Airport, LA | 6 mi | 33 min | ESE 8 | 10.00 mi | Thunderstorm | 82°F | 78°F | 88% | 1018.4 hPa |
| Bay St. Louis, Stennis International Airport, MS | 19 mi | 34 min | SW 9 G 16 | 7.00 mi | Thunderstorm Rain | 81°F | 73°F | 79% | 1019 hPa |
| New Orleans, New Orleans Lakefront Airport, LA | 20 mi | 33 min | ESE 3 | 8.00 mi | Light Rain | 82°F | 77°F | 85% | 1017.9 hPa |
Wind History from ASD (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 24hr | NW | SW | S | SW | S | SW | SE | Calm | Calm | Calm | Calm | Calm | Calm | S | S | Calm | Calm | Calm | N | Calm | Calm | Calm | E | |
| 1 day ago | Calm | E | Calm | Calm | SE | S | S | S | S | Calm | Calm | Calm | Calm | Calm | Calm | S | Calm | Calm | Calm | NW | Calm | Calm | Calm | Calm |
| 2 days ago | NE | N | SE G21 | S | E | S | S | S | S | SE | Calm | Calm | Calm | Calm | Calm | Calm | Calm | Calm | Calm | NW | Calm | SE | S | S |
Tide / Current Tables for Bayou BonFouca, Route 433, Louisiana
EDIT RT Ports Option Weekend mode (on/off) (on/off) Help One Week of DataBayou BonFouca
Click for Map
Sat -- 12:10 AM CDT Moonset
Sat -- 01:28 AM CDT 0.16 feet Low Tide
Sat -- 02:49 AM CDT First Quarter
Sat -- 06:28 AM CDT Sunrise
Sat -- 01:48 PM CDT Moonrise
Sat -- 02:07 PM CDT 0.54 feet High Tide
Sat -- 07:37 PM CDT Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Click for Map
Sat -- 12:10 AM CDT Moonset
Sat -- 01:28 AM CDT 0.16 feet Low Tide
Sat -- 02:49 AM CDT First Quarter
Sat -- 06:28 AM CDT Sunrise
Sat -- 01:48 PM CDT Moonrise
Sat -- 02:07 PM CDT 0.54 feet High Tide
Sat -- 07:37 PM CDT Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
| 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 | 9 pm | 10 pm | 11 pm |
| 0.2 | 0.2 | 0.2 | 0.2 | 0.2 | 0.2 | 0.3 | 0.3 | 0.3 | 0.4 | 0.4 | 0.5 | 0.5 | 0.5 | 0.5 | 0.5 | 0.5 | 0.5 | 0.4 | 0.4 | 0.3 | 0.3 | 0.2 | 0.2 |
Tide / Current Tables for Pearlington, Pearl River, Mississippi
EDIT (on/off) Help One Week of DataPearlington
Click for Map
Sat -- 12:10 AM CDT Moonset
Sat -- 02:49 AM CDT First Quarter
Sat -- 06:27 AM CDT Sunrise
Sat -- 08:46 AM CDT 1.24 feet High Tide
Sat -- 01:47 PM CDT Moonrise
Sat -- 07:36 PM CDT Sunset
Sat -- 08:15 PM CDT 0.22 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Click for Map
Sat -- 12:10 AM CDT Moonset
Sat -- 02:49 AM CDT First Quarter
Sat -- 06:27 AM CDT Sunrise
Sat -- 08:46 AM CDT 1.24 feet High Tide
Sat -- 01:47 PM CDT Moonrise
Sat -- 07:36 PM CDT Sunset
Sat -- 08:15 PM CDT 0.22 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
| 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 | 9 pm | 10 pm | 11 pm |
| 0.6 | 0.6 | 0.7 | 0.8 | 1 | 1 | 1.1 | 1.2 | 1.2 | 1.2 | 1.2 | 1.1 | 1.1 | 0.9 | 0.8 | 0.7 | 0.5 | 0.4 | 0.3 | 0.3 | 0.2 | 0.2 | 0.3 | 0.3 |
Weather Map and Satellite Images
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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 New Orleans/Baton Rouge, LA (12,3,4,5)
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Ground Weather Radar Station New Orleans/Baton Rouge, LA
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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. |