Monday, April19, 2021
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Marine Weather and Tides
Byram, MS

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1/26/2021 -- The West Coast Satellite images havd been updated. They now use GEOS-17.
1/1/2021 -- The 7 day forecast are now working well. Thank you NOAA for your support.

Sunrise 6:25AMSunset 7:34PM Monday April 19, 2021 6:01 PM CDT (23:01 UTC) Moonrise 10:43AMMoonset 12:38AM Illumination 55% 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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7 Day Forecast for Marine Location Near Byram, MS
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location: 32.22, -90.24     debug


Area Discussion for - Jackson, MS
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FXUS64 KJAN 192054 AFDJAN

Area Forecast Discussion National Weather Service Jackson MS 354 PM CDT Mon Apr 19 2021

DISCUSSION.

Tonight-Tuesday .

Tonight: As shortwave ridging builds east tonight, shortwave trough will dampen over the northern Gulf Coast. With increasing isentropic ascent & upper level jet strengthening, mid-high level cloudiness will increase across most of the area tonight. Broad surface ridge will sit across the area, leading to dry conditions. Due to some ascent & some deepening moisture aloft, can't fully rule out some sprinkles in the S MS overnight. However, there is quite a bit of dry air to overcome so measurable precip looks unlikely. Increasing cloudiness will keep lows warmer, but still below normals, in the mid-upper 40s north to near 50 degrees in the south.

Tuesday: As the shortwave trough axis quickly moves across the northern Gulf Coast & the ascent/PVA pushes to the east, this will lead to decrease in clouds into the mid-morning to midday hours. As the center of the surface ridge builds east, another sharp trough/jet energy will be diving through the Ozarks/Mid-MS Valley. This will drive a sfc low development across the Ozarks & dry front diving down towards the the Delta through the day. In response, some subtle WAA will occur warming highs to just near normals, generally in the mid 70s. In addition, we should remain dry in the low-levels, so we should be able to mix out again Tuesday. Mixing won't be as efficient & humidity won't be as low as today. However, an increase in pressure gradient/SW winds, especially across the Delta, will keep very limited fire danger across some areas. It can't be fully ruled out as fuels continue to dry. Will hold off any mention in the HWO. /DC/

Tuesday night through the weekend .

Broad troughing encompasses the eastern half of the country. This will result in a cooler weather pattern across the region, more springlike than summerlike. A reinforcing cold front will drop south through the region on Tuesday night into Wednesday. This should be a dry front but the pressure gradient will be tight behind it. This will result in gusty winds on Wednesday across the region. While we won't put anything out on this just yet, this may raise some fire danger concerns for Wednesday across the region, with the drier airmass moving in and the gusty winds.

Dry weather will continue through the period. However, cooler air will move in behind this front. Wednesday and Thursday mornings will be on the cool side with potential for frost possibly both mornings in the northeast(though not as likely Wednesday given continued gusty winds). Will continue to advertise in the HWO/graphics. By the end of the week, the surface high will shift east and some shortwave ridging will move overhead. This will allow southerly flow to return to the region for the end of the week. An upper trough will dig south across the Desert Southwest with rain slowly moving east across the region later on Friday into early Saturday. The bulk of the precipitation looks to move across the region on Saturday as the upper trough quickly swings by behind it, all exiting the region by Sunday. At this point, looks like showers with maybe some isolated thunder. However, it is entering the end of April so we will continue to monitor for any stronger storm potential with this approaching system but for now looks benign. /28/

AVIATION. 18Z TAF discussion: VFR flight cats will prevail through the TAF period with generally light wind, but 10-15mph winds/gusts are possible across E TAF sites, mainly MEI, PIB & HBG. Mid-high clouds will increase into this evening, especially across S MS & central LA where a few sprinkles cannot be entirely ruled out overnight. Winds will turn more SW into Tues. & slightly gustier, especially into the afternoon. /DC/DL/

PRELIMINARY POINT TEMPS/POPS. Jackson 48 75 42 63 / 7 1 0 0 Meridian 48 75 43 64 / 4 2 0 0 Vicksburg 49 75 42 63 / 4 2 1 0 Hattiesburg 49 75 46 67 / 11 6 0 0 Natchez 50 73 44 63 / 6 2 0 0 Greenville 48 73 40 61 / 0 3 4 0 Greenwood 48 73 40 61 / 0 2 4 0

JAN WATCHES/WARNINGS/ADVISORIES. MS . None. LA . None. AR . None.



DC/28


Weather Reporting Stations
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Jackson, Hawkins Field Airport, MS8 mi69 minNW 610.00 miFair71°F39°F31%1014.3 hPa
JB Williams Airport, MS11 mi67 minNNW 710.00 miFair72°F41°F33%1014.9 hPa
Jackson, Jackson International Airport, MS11 mi68 minVar 410.00 miA Few Clouds72°F38°F29%1014.5 hPa

Link to 5 minute data for KHKS

Wind History from HKS (wind in knots)
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Last 24hrNW6
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NW53CalmCalmCalmCalmNW3CalmCalmCalmCalmCalmCalmNE5N7NW7NW6W10
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1 day ago3NW3CalmCalmCalmNW3CalmCalmCalmN3NW3CalmCalmCalmNE4NE4NE6N4NW46NW7
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2 days agoE5NE5E4NE6E3CalmN4CalmCalmCalmNE3CalmN33N5N34--5NW5444NW5

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