Saturday, July22, 2017 L-36.com


Marine Weather and Tides
Bassfield, MS

Version 3.4
What's New / NOTES
6/25/2017 - NOAA is having a major issue that impact the 7 day forecast load times. Many users are reporting problems. The issue has been reported.
5/23/2017 - Worked with NOAA again to speed up the 7 day forecast load times. Thanks to them for being responsive.
5/19/2016 - There were issues with the 3 day airport observation history. I switched to another data source. Let me know if you see any issues with the data feeds.

Sunrise 6:06AMSunset 8:00PM Saturday July 22, 2017 3:36 PM CDT (20:36 UTC) Moonrise 5:18AMMoonset 7:29PM Illumination 1% Phase: Waning Crescent; Moon at 29 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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GMZ530 Lake Pontchartrain And Lake Maurepas- 310 Pm Cdt Sat Jul 22 2017
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.
Sunday night..West winds 10 to 15 knots. Waves 2 to 4 feet. Dominant period 4 seconds. Chance of showers and Thunderstorms.
Monday..West winds near 10 knots. Waves 1 to 2 feet. Dominant period 4 seconds. Chance of showers and Thunderstorms.
Monday night..West winds near 10 knots. Waves 1 to 2 feet. 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. Slight chance of showers and Thunderstorms.
Tuesday night..West winds 5 to 10 knots. Waves 1 foot or less. Dominant period 4 seconds.
Wednesday..West winds 5 to 10 knots. Waves 1 foot or less. Dominant period 4 seconds. Chance of showers and Thunderstorms.
Wednesday night..West winds 5 to 10 knots. Waves 1 foot or less. Dominant period 4 seconds. Slight chance of showers and Thunderstorms.
Thursday..West winds 5 to 10 knots. Waves 1 foot or less. Chance of showers and Thunderstorms.
Thursday night..West 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- 310 Pm Cdt Sat Jul 22 2017
Synopsis..An upper low will move through the northern gulf today. Surface high pressure will remain over the area through next week.

7 Day Forecast for Marine Location Near Bassfield, MS
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location: 31.5, -89.84     debug


Area Discussion for - Jackson, MS
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Fxus64 kjan 221751
afdjan
area forecast discussion
national weather service jackson ms
1251 pm cdt Sat jul 22 2017

Slight heat relief expected over the next several days...

Update
Updated for 18z aviation discussion

Aviation
18z TAF discussion:
vfr conditions are expected to prevail for the TAF period with the
exception of vcsh vcts during the afternoon and early evening
hours (21z 22 - 2z 23) which will bring tempo MVFR ifr conditions.

Greatest thunderstorm coverage will be along and south of i-20
with only isolated activity further north at glh gwo gtr. Winds
will be light out of the south southwest through the period. Tw

Discussion
As of 14z, the main synoptic scale features influencing the
weather over the arklamiss are a 593dam ridge currently centered
over northeast oklahoma and extending east through the lower
mississippi river valley, and a cold core closed mid upper-level
low and associated inverted trough drifting west over the northern
gulf of mexico beneath the aforementioned ridge. Convective
activity has gotten an early start this morning across the hwy 82
corridor with area radars showing a cluster of showers and
thunderstorms moving west towards i-55 and the delta. While there
hasn't been much lightning activity these showers and storms have
been efficient rain makers so locally heavy rainfall can be
expected. For the remainder of today, the main headline will
continue to be the heat stress concerns with a heat advisory
ongoing for most of the delta and the hwy 82 corridor where heat
index values are expected to peak between 105-108 degrees. One
limiting factor will be the ongoing showers and storms that could
cut back on high temperatures in some locations, however coverage
is not great enough to warrant canceling the heat advisory or
adding any other counties, so will let it ride as is for the rest
of the day. Elsewhere outside of the heat advisory, heat index
values are expected to remain between 100-105 degrees with greater
afternoon convective coverage as the upper low inverted trough
continue to slide west. Adjusted 12z jan sounding indicated a low
end potential for an isolated microburst or two with any deeper
convection this afternoon, but organized severe weather is not
expected. Storms should start to weaken with loss of daytime
heating tonight and expect most activity to be gone by midnight.

Tw
prior discussion below:
today and tonight:
the upper ridge will continue weaken across the area today, and
this combined pwats ranging from 1.8 to 2.0 inches and afternoon
heating, will allow for another round of thunderstorms. High
temperatures will be a little cooler across most of the area, with
highs in the low mid 90s. Although the temperatures will be a
touch cooler than yesterday, dewpoints in the mid 70s will cause
heat indices to exceed 105 degrees for areas generally along and
north of i-20. A heat advisory is in affect for later this morning
through the afternoon hours.

The convection will diminish after sunset this evening with skies
becoming partly cloudy overnight. Expect warm overnight lows once
again in the mid 70s. 15
Sunday through the end of the coming work week:
still looking like our region will get a bit of relief from the
hot and humid conditions through the first portion of the coming
week as the eastern extent of the heat ridge yields to a very weak
cut-off upper level disturbance over the lower ms valley vicinity.

It is important to emphasize that overall heat and humidity
levels will not be drastically lower over this period and the
main relief will come from a good deal of afternoon shower and
thunderstorm activity. On Sunday some northern and western
locations still may peak near 105 heat index values midday through
early afternoon, but at this point we do not anticipate needing
an advisory for tomorrow. The very slight cooling trend will
continue into Monday and Tuesday when peak heat index values
should remain closer to 100 degrees for most areas. Overall rain
chances Sunday through Tuesday will be highest over the eastern
half of zones although all locations should be fairly confident of
getting at least a bit of rain over this span. Certainly not out
of the question that some (luckier?) spots in eastern ms may get a
few inches of precipitation Sunday through Tuesday considering
thunderstorms will be producing locally torrential downpours. We
are relatively confident any flooding issues that arise should be
minor and extremely localized. There are no great signals for
particularly robust afternoon storms worthy of more than marginal
microburst threats.

Of course the re-wetting of the region through the early portion
of the coming week may have some negative impact by the time we
get to mid through late in the coming work week. By that time
model consensus is now pretty good that the very "dirty" eastern
extent of the heat ridge over us in the short term will
restrengthen over at least the northwest half of our region. This
evolution should gradually decrease rain chances and confine them
to mainly the southeast half of zones with peak afternoon
temperatures and heat index values responding upwards
(particularly over the arklamiss delta). So, once we get past
Tuesday it is quite possible will may be dealing with some
additional heat advisories being necessary, especially by Thursday
or Friday. This will be briefly mentioned in the hwo although
graphics will focus on short term heat implications for now.

Model consensus shows potential for a cold (more like "cool")
front sliding south into the region sometime next weekend. If this
boundary can come through with gusto our region has some hope of
getting more than marginal relief from the heat. However, at this
point it is too early to have much confidence in details this far
out in the forecast. Bb

Preliminary point temps pops
Jackson 92 74 92 75 45 34 48 22
meridian 92 74 92 74 40 23 44 23
vicksburg 92 75 92 75 37 20 47 23
hattiesburg 92 74 91 74 50 25 54 23
natchez 91 74 90 74 50 30 59 24
greenville 94 76 93 75 47 10 36 23
greenwood 93 75 92 76 47 11 42 22

Jan watches warnings advisories
Ms... Heat advisory until 7 pm cdt this evening for msz018-019-025>042-
046-047.

La... Heat advisory until 7 pm cdt this evening for laz007>009-015-016-
023-025.

Ar... Heat advisory until 7 pm cdt this evening for arz074-075.

Tw 15 bb


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
OSTF1 - Stennis Test Facility 80 mi46 min Calm G 1.9 78°F 1016.2 hPa (-1.1)76°F
WYCM6 - 8747437 - Bay Waveland Yacht Club, MS 86 mi48 min E 1.9 G 4.1 83°F 89°F1015.7 hPa

Wind History for Bay Waveland Yacht Club, MS
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Hattiesburg/Laurel, Hattiesburg-Laurel Regional Airport, MS27 mi41 minSE 610.00 miMostly Cloudy91°F73°F56%1030 hPa

Wind History from PIB (wind in knots)
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Last 24hrNE5SE55CalmCalmSW4CalmS3CalmS3SW3CalmCalmCalmCalmS3S3SW4SW4CalmCalmE3SE36
1 day ago45N4CalmCalmCalmCalmCalmNW4N5CalmCalmCalmCalmCalmCalmNW3N4NW34N3NE4E4E7
2 days agoCalmNE4N4CalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmN43NW4NE55N3N6N5

Tide / Current Tables for Tchefuncta River, Lake Pontchartrain, Louisiana
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Tchefuncta River
Click for Map
Sat -- 05:21 AM CDT     Moonrise
Sat -- 06:13 AM CDT     Sunrise
Sat -- 06:35 AM CDT     -0.22 feet Low Tide
Sat -- 07:27 PM CDT     Moonset
Sat -- 07:44 PM CDT     0.78 feet High Tide
Sat -- 08:00 PM CDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0.40.20.1-0-0.1-0.2-0.2-0.2-0.2-0.1-00.10.20.30.40.50.60.70.70.80.80.80.70.6

Tide / Current Tables for Wolf River, Henderson Avenue bridge, Mississippi
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Wolf River
Click for Map
Sat -- 05:18 AM CDT     Moonrise
Sat -- 06:09 AM CDT     Sunrise
Sat -- 11:26 AM CDT     2.20 feet High Tide
Sat -- 07:23 PM CDT     Moonset
Sat -- 07:57 PM CDT     Sunset
Sat -- 09:55 PM CDT     -0.59 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
-0.3-00.20.50.711.31.51.822.12.22.22.11.81.51.10.70.3-0.1-0.4-0.5-0.6-0.5

Weather Map and Satellite Images
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Weather Map
wmap_A
IR Satellite Image from GEOS
east_satellite

GOES Local Image of Southeast    EDIT
Geos

Wind Forecast for Jackson, MS (16,3,4,5)
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Ground Weather Radar Station Jackson/Brandon, MS
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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.