Marine Weather and Tides
3/30/2021 -- ANZ330 has been split into ANZ331 and ANZ332. Click EDIT in Marine Forecast and select your new zone.
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 6:09AM||Sunset 8:03PM||Sunday July 25, 2021 11:20 AM CDT (16:20 UTC)||Moonrise 9:41PM||Moonset 7:37AM||Illumination 98%|
7 Day Forecast for Marine Location Near Pelahatchie, MSHourly EDIT Help
Area Discussion for - Jackson, MS  (on/off)  Help NOTE: mouseover dotted underlined text for definition
FXUS64 KJAN 251557 AFDJAN
Area Forecast Discussion National Weather Service Jackson MS 1057 AM CDT Sun Jul 25 2021
UPDATE. Updated for morning discussion.
DISCUSSION. Another hot and humid day expected under the upper level ridge. Plenty of low level moisture pushing the heat indices to advisory criteria for much of the forecast area. Areas in the east may be more borderline . where the cu field has already started to develop, along with sct convection, limiting the max temps. Will leave the current advisory as is . have made minor updates to the hourly trends. However, the forecast is largely on track for more showers/TS in the afternoon, particularly in the east and southeast per last few runs of the HRRR.
Prior discussion below:
Today and tonight .
The heat continues for our area today with conditions similar to yesterday. The upper ridge will remain entrenched across our region, which will result in hot temperatures and some convection. A muggy morning is unfolding across the region with overnight readings only getting thus far into the mid to upper 70s. This will make for a warm start as temperatures will rise into the 80s soon after sunrise before topping out in the mid 90s. The highest temperatures should again be in the west to central parts of the forecast area with temperatures rising into the lower to mid 90s across the eastern third of the forecast area. In addition, with sufficient atmospheric moisture in place, heat indices will once again climb into the 105 to 110 degree range, especially for the western two thirds of the CWA. This area has already been placed in a Heat Advisory for today and this was continued with a small extension in the east. The remainder of the forecast area will fall in a limited risk for heat indices near 105 degrees, but if conditions are just a bit warmer or muggier, it won't take much for these locations to reach higher than 105 for a little while. The main concern with the eastern part of the forecast area again will be a better chance for convection and cloud cover to hinder temperatures. This area has, like yesterday, the better chance for convection. However, the hi-res models indicate that coverage is less today than was the case yesterday. Will allow later shifts to monitor trends and expand the heat advisory if desired.
Additional storms will occur today during the afternoon before dissipating this evening. Weak lapse rates and vertical totals along with insufficient DCAPE should limit any microburst potential for today. However, with PW values nearing 2 inches, any storm has potential for locally heavy rainfall. These will dissipate during the evening, leaving us with another muggy night with overnight lows in the mid 70s. /28/
Monday through Next Sunday .
Upper level ridging along with a high pressure will continue to dominate through the long-term period. A low pressure system about 150 miles east of Cape Canaveral has some influence with the amount of moisture(PWs 2+ inches) and increased humidity states across the Deep South have been experiencing. Outside of strong ridging, normal like summertime patterns which consists of afternoon scattered showers and thunderstorms will be possible each day through the period. The main concern throughout the long-term period continues to be the HEAT! Temperatures combined with humidity (dew points ranging from the mid to upper 70s) will possibly raise heat indices between 105-110F late this weekend and early next week. Monday and Tuesday will have better rain chance coverage than what we've seen these last few days so this could play a factor as to how much we heat up especially if convection starts early. So the need for heat advisories will be played by ear for these days. Regardless of rain, it will be hot and will continue to highlight the heat stress in the HWO. An Elevated Risk will cover pretty much everywhere west of Highway 15 and places along and east of Highway 15 will be under a Limited Risk for Monday and Tuesday. Additional graphics and advertisement may be needed for heat during the latter half of the week but wait until we get closer to those days to determine. Highs will range from the low to mid 90s during the beginning half of the period but temperatures could rise to the upper 90s during the latter half of the week as the previous mentioned ridge begin to deepens out west and a strong high pressure(594-596dam) will take control.
With an increasing heat threat, it is suggested that outside work/play is limited and to remember to stay hydrated as much as possible this week!/JNE/
AVIATION. 12Z TAF discussion: VFR conditions are prevailing this morning. Patchy fog is affecting KPIB but this should improve since daybreak has occurred. A few showers are present but not currently affecting any TAF site. Additional afternoon storms are likely once again today, especially in the east and could bring localized MVFR conditions. Otherwise, VFR conditions should prevail. /28/
PRELIMINARY POINT TEMPS/POPS. Jackson 96 76 93 76 / 38 8 65 20 Meridian 94 75 94 74 / 46 9 60 22 Vicksburg 98 77 95 76 / 23 9 51 17 Hattiesburg 96 76 94 76 / 51 7 51 14 Natchez 95 76 93 75 / 23 9 55 15 Greenville 95 76 94 75 / 23 9 47 18 Greenwood 96 76 95 75 / 23 8 55 20
JAN WATCHES/WARNINGS/ADVISORIES. MS . Heat Advisory until 7 PM CDT this evening for MSZ018-019-025>028- 034>037-040>044-047>050-053>056-059>066-072>074.
LA . Heat Advisory until 7 PM CDT this evening for LAZ007>009-015-016- 023>026.
AR . Heat Advisory until 7 PM CDT this evening for ARZ074-075.
Weather Reporting StationsEDIT (on/off)  Help NOTE: Click on distance to see the station location on a map
Airport ReportsEDIT (on/off)  Help Click EDIT to display multiple airports. Follow links for more data.
|Jackson, Jackson International Airport, MS||12 mi||27 min||Var 3||10.00 mi||Mostly Cloudy||89°F||74°F||61%||1016.2 hPa|
|Jackson, Hawkins Field Airport, MS||19 mi||28 min||N 0||10.00 mi||Partly Cloudy||90°F||76°F||63%||1016 hPa|
Link to 5 minute data for KJAN
Wind History from JAN (wind in knots)
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|2 days ago||SW||W||NE||NW||W||W||W||Calm||S||SE||Calm||Calm||Calm||SE||Calm||S||S||SW||SW||W||W||NW |
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