Tuesday, September22, 2020
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L-36.com

Marine Weather and Tides
Diamondhead, MS

Version 3.4
NOTICE
8/26/2020 The 7 day forecast is taking about 5 seconds to load but it will eventually load. NOAA is still working on it.
8/18/2020 NOAA continues to have trouble. Wind guest will occasionally be left off graphs. I am working with NOAA to resolve the issue.
12/16/2019 NOAA is having trouble with requests that include wind gusts. I am posting graphs without wind gusts until it gets fixed.
10/9/2019 Updated the Marine Zones.
9/4/2019 Fixed the weather maps due to NOAA moving them.
7/25/2019 New feature in the Airports section gives a link to 5 minute updates for data reports.

Sunrise 6:43AMSunset 6:53PM Tuesday September 22, 2020 7:27 AM CDT (12:27 UTC) Moonrise 12:29PMMoonset 11:03PM Illumination 27% Phase: Waxing Crescent; Moon at 5 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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GMZ532 Mississippi Sound- 409 Am Cdt Tue Sep 22 2020
.small craft advisory in effect through Wednesday evening...
Today..East winds 20 to 25 knots. Waves 3 to 5 feet. Dominant period 4 seconds. Chance of showers until late afternoon, then showers likely and slight chance of Thunderstorms late.
Tonight..East winds 15 to 20 knots. Waves 3 to 5 feet. Dominant period 4 seconds. Chance of showers.
Wednesday..East winds 15 to 20 knots. Waves 3 to 5 feet. Dominant period 4 seconds. Chance of showers in the morning, then showers likely and slight chance of Thunderstorms in the afternoon.
Wednesday night..Southeast winds 15 to 20 knots. Waves 3 to 5 feet. Dominant period 4 seconds. Showers likely and slight chance of Thunderstorms.
Thursday..South winds 10 to 15 knots. Waves 2 to 4 feet. Dominant period 4 seconds. Showers likely and slight chance of Thunderstorms.
Thursday night..South winds 10 to 15 knots. Waves 1 to 3 feet. Dominant period 4 seconds. Showers likely in the evening, then chance of showers after midnight.
Friday..South winds 10 to 15 knots. Waves 1 to 3 feet. Dominant period 4 seconds. Isolated Thunderstorms in the morning. Scattered showers through the day. Scattered Thunderstorms in the afternoon.
Friday night..South winds 5 to 10 knots. Waves 1 to 2 feet. Dominant period 4 seconds. Isolated Thunderstorms in the evening. Scattered showers through the night.
Saturday..Southeast winds 5 to 10 knots. Waves 1 to 2 feet. Dominant period 4 seconds. Scattered showers through the day. Isolated Thunderstorms in the afternoon.
Saturday night..South winds 5 to 10 knots becoming southwest after midnight. Waves 1 to 2 feet. Dominant period 4 seconds. Isolated showers and Thunderstorms through the night.
GMZ500 Synopsis Pascagoula To Sw Pass Mississippi- Synopsis Sw Pass Mississippi River To Atchafalaya River- 409 Am Cdt Tue Sep 22 2020
Synopsis..Tropical storm beta made landfall near matagorda bay overnight. Meanwhile, high pressure over the eastern u.s. Is interacting with the circulation of beta to provide strong easterly flow across the coastal waters. Refer to the latest advisories issued by the national hurricane center regarding tropical storm beta.


7 Day Forecast for Marine Location Near Diamondhead, MS
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location: 30.36, -89.34     debug


Area Discussion for - New Orleans/Baton Rouge, LA
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FXUS64 KLIX 221159 AFDLIX

Area Forecast Discussion National Weather Service New Orleans LA Issued by National Weather Service Jacksonville FL 659 AM CDT Tue Sep 22 2020

AVIATION.

Tropical Storm Beta will meander over the middle Texas coast today and then move slowly northeastward along the coast tonight. A frontal boundary was located south of the area this morning over the northern Gulf, and this boundary will lift northward later today and tonight. VFR/MVFR cigs are forecast to become IFR this afternoon as a steady rain develops. East winds 10-15 knots with higher gusts will prevail through the day.

PREV DISCUSSION. /issued 447 AM CDT Tue Sep 22 2020/

DISCUSSION . Overall it has been fairly quiet overnight with convection remaining offshore. There has still been scattered to numerous very light rain across the area. Winds have relaxed over land but are still blowing hard over the marine areas and tides are either at high tide or will be there in the next few hours.

Today through Thursday is the main forecast concern. Beta made landfall near Matagorda Bay. Rainfall has been the primary concern over the last few days for Tuesday and Wednesday and that is still the case but overall the threat of flash flooding is beginning to look much lower. Despite good LL convergence across the area and abundant moisture in place, rain just hasn't been able to penetrate inland much at all. What is likely the biggest hitch in that potential, the old front which has drifted even farther south from where it was the previous night. It is now well into the Gulf and north of the boundary is not really an unstable environment. Last nights sndg was saturated through the entire column and was conditionally unstable but with no real forcing in place we haven't seen anything more than light to very light shra if not sprinkles across the area. This should begin to change at some point today and tonight. As Beta sits over coastal TX today the front will begin to drift north and should move towards the coast later today and tonight. This will finally lead to better LL convergence, deeper LL moisture, and some instability. The front will increase the potential for showers and thunderstorm thanks to the increase in forcing it will provide as well. This band this afternoon and tonight will have the potential to produce heavy rain and isolated flash flooding is still possible but the rather heavy amounts that were previously thought 24 hrs or so ago are not anticipated. The greatest potential for heavy rain will be across mainly coastal portions of SELA.

Wednesday, Beta will begin to lift to the northeast out of southeast TX and into southwest LA late Wednesday. We should still see the boundary draped across the area mainly oriented N-S. Abundant moisture will remain in place and all features that lead to rain today and tonight will still be in place Wednesday and Wednesday night. Additional rainfall is expected along it and a we could still see pockets of heavy rain.

Thursday what is questionable but there is still the potential for pockets of heavy rain. Whatever is left of Beta will continue to lift to the northeast and should move into central MS. The boundary should take more of a SW-NE orientation and this lingering boundary could continue to serve as a focus for additional rain with locally heavy rain possible but the better dynamics will likely be north and east of the area.

Although the threat for flash flooding has decreased the potential is still there and no changes will be made to the flash flood watch at this time. WPC still has mainly the southwestern 3rd of the CWA under a Slight Risk for excessive rainfall today and then all of the area tomorrow and Thursday. Overall we could still see widespread 2 to 4 inches of rain with locally higher amounts.

Friday and into the weekend we will start to see things slowly work back to normal. Friday and Saturday will still be slightly below normal mainly for highs and we could still see some decent cloud cover as the trough axis left behind by Beta will still be west of the area. The base of the trough looks to close off Saturday and by Sunday would move over the area. This could provide one last shot of some rain before what could finally be the first real fall cold front next week. Models have been pinging on this front for about a week now and they are still showing it. Fingers crossed. /CAB/

MARINE . The coastal waters are still seeing a lot of impacts. Hazardous conditions continue across all waters and the Small Craft advisory remains in place. Winds look to remain strong through Wednesday and frequent gusts abv 20 kts could still continue well into Wednesday night, especially east of the MS River. The SCY has been extended through 00z Thursday but will likely need to be extended for portions of the coastal waters even longer.

As for the coastal flood advisory/warning no changes made at this time. The warning is set to expire at 17z today after all sites have sufficiently come off of high tide. After 17z all locations in the warning will then transition to a coastal flood advisory which will remain in effect through Thursday morning. /CAB/

PRELIMINARY POINT TEMPS/POPS. MCB 74 67 79 70 / 70 50 80 70 BTR 76 70 82 72 / 80 60 90 60 ASD 76 68 82 71 / 80 50 90 60 MSY 79 74 83 74 / 80 60 80 60 GPT 76 69 80 72 / 50 40 70 60 PQL 76 67 81 71 / 50 30 70 60

LIX WATCHES/WARNINGS/ADVISORIES. LA . Flash Flood Watch through Wednesday evening for LAZ034>037- 046>050-056>072.

Coastal Flood Advisory until 7 AM CDT Thursday for LAZ049-066.

Coastal Flood Warning until noon CDT today for LAZ040-050-058- 060>062-064-067>070-072.

Coastal Flood Advisory from noon today to 7 AM CDT Thursday for LAZ040-050-058-060>062-064-067>070-072.

GM . Small Craft Advisory until 7 PM CDT Wednesday for GMZ530-532-534- 536-538-550-552-555-557-570-572-575-577.

Tropical Storm Warning for GMZ550-552-570-572-575.

MS . Coastal Flood Advisory until 7 AM CDT Thursday for MSZ081-082.

Coastal Flood Warning until noon CDT today for MSZ080.

Coastal Flood Advisory from noon today to 7 AM CDT Thursday for MSZ080.

GM . Small Craft Advisory until 7 PM CDT Wednesday for GMZ532-534-536- 538-550-552-555-557-570-572-575-577.

Tropical Storm Warning for GMZ552-570-572-575.




Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
WYCM6 - 8747437 - Bay Waveland Yacht Club, MS 2 mi57 min ENE 12 G 15 72°F 71°F1018.8 hPa
SHBL1 - 8761305 - Shell Beach, LA 38 mi57 min E 14 G 17 74°F 76°F1017.6 hPa
PNLM6 - 8741533 - Pascagoula NOAA Lab, MS 41 mi57 min 73°F
PTBM6 - 8741003 - Petit Bois Island, MS 45 mi57 min ENE 19 G 24 71°F 1018.8 hPa
NWCL1 - 8761927 - New Canal, LA 47 mi57 min ENE 15 G 20 72°F 76°F1016.4 hPa
GDXM6 - Grand Bay Reserve, MS 49 mi102 min ENE 12 69°F 1020 hPa64°F

Wind History for Bay Waveland Yacht Club, MS
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Bay St. Louis, Stennis International Airport, MS6 mi37 minENE 87.00 miMostly Cloudy68°F62°F83%1018.6 hPa
Gulfport - Gulfport-Biloxi International Airport, MS15 mi34 minENE 1010.00 miMostly Cloudy68°F60°F76%1018.7 hPa
Keesler Air Force Base / Biloxi, MS23 mi31 minENE 1110.00 miOvercast67°F60°F79%1019.2 hPa

Link to 5 minute data for KHSA

Wind History from HSA (wind in knots)
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Tide / Current Tables for Waveland, Mississipi Sound, Mississippi
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Waveland
Click for Map
Tue -- 02:52 AM CDT     2.20 feet High Tide
Tue -- 06:45 AM CDT     Sunrise
Tue -- 12:29 PM CDT     Moonrise
Tue -- 02:15 PM CDT     0.32 feet Low Tide
Tue -- 06:53 PM CDT     Sunset
Tue -- 11:02 PM CDT     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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1.922.22.22.121.81.61.31.10.80.60.40.30.30.30.40.50.60.81.11.31.51.7

Tide / Current Tables for Cat Island (West Point), Mississippi
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Cat Island (West Point)
Click for Map
Tue -- 01:53 AM CDT     2.36 feet High Tide
Tue -- 06:45 AM CDT     Sunrise
Tue -- 12:28 PM CDT     Moonrise
Tue -- 02:23 PM CDT     0.20 feet Low Tide
Tue -- 06:52 PM CDT     Sunset
Tue -- 11:02 PM CDT     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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2.22.32.42.32.221.81.51.310.70.50.40.30.20.20.30.40.60.81.11.31.61.9

Weather Map
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wmap_A
GEOS 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.
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Other links: Northern Pacific     Contential US     Full GOES-East
Ground Weather Radar Station New Orleans/Baton Rouge, LA
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Gulf Stream Current



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