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 6:51AM||Sunset 6:51PM||Monday September 27, 2021 1:53 AM CDT (06:53 UTC)||Moonrise 10:57PM||Moonset 1:00PM||Illumination 67%|
7 Day Forecast for Marine Location Near Grenada, MSHourly EDIT Help
Area Discussion for - Jackson, MS  (on/off)  Help NOTE: mouseover dotted underlined text for definition
FXUS64 KJAN 270548 AAA AFDJAN
Area Forecast Discussion . UPDATED National Weather Service Jackson MS 1248 AM CDT Mon Sep 27 2021
UPDATE. Updated for 06Z aviation discussion
AVIATION. 06Z TAF discussion: VFR flight cats expected at most TAF sites tonight. Shallow ground fog psbl at GTR & PIB overnight. Some brief MVFR-IFR vis psbl, mainly between 27/11-12Z before improving to VFR after 27/13Z. Winds have decoupled or are very light. S-SE winds will generally be less than 10mph today, with brief higher gusts in the NW Delta. Some sct-bkn high cirrus will build in from the W today. /DC/
DISCUSSION. Expect another cool and dry night as high pressure remains in control across the region. Overnight low temperatures will fall into the middle 50s to around 60 for most locations. Shallow patchy fog will be possible late tonight mainly in low lying areas. No significant changes were needed to the current forecast. /27/
Prior discussion below:
Through Monday: The surface ridge will begin to shift eastward, ushering in modest southerly low level flow by Monday. With rather dry air still lingering across the region tonight, we'll have another cool night, though perhaps not quite as cool given the weak return flow. Brief patchy shallow fog is likely again in low spots. With the shift in flow, dewpoints will begin a trend of ticking slowly upward tomorrow. By late afternoon, isolated shower activity will begin to approach central LA, though the daytime hours will remain dry. /DL/
Tomorrow night through Saturday . The steady return of southerly flow to the region will continue the warmer temperatures in the mid to upper 80s through the extended forecast. Along with the warm temps, the pattern will feed more moisture from the Gulf into the airmass, with dewpoints climbing back into the lower 70s by Tuesday west of I-55. With that return of warmth and moisture, the forecast gets into a shower and thunderstorm pattern that will be largely driven by diurnal influences . at least early. A shortwave pivoting around the larger upper trough in the west enhances rain chances for Wednesday. Models then seem to get in a stalled pattern for a bit underneath a building upper level ridge . through the end of the week Showers/thunderstorm chances remain in the forecast. though guidance is trying to be more diurnal in timing . all summer those pops have lingered beyond 00Z and started before 18Z . so the forecast is pop heavy. Both the ECMWF and the GFS lift the main western trough to the north while another piece of energy pivots through, diving into the southwest at the end of the week. As the pattern starts to make a major shift, models are trying to bring a front through with associated rainfall. However, the influence of the southern wave is not as clear. Given the precip forecast dependence on rainfall, not to mention the temperatures . will say that the end of the forecast is not particularly high confidence. /HJS/
PRELIMINARY POINT TEMPS/POPS. Jackson 58 87 65 86 / 0 1 10 42 Meridian 57 85 61 85 / 0 0 1 17 Vicksburg 59 88 66 87 / 0 1 15 54 Hattiesburg 59 86 65 86 / 0 2 5 37 Natchez 59 86 68 84 / 0 4 19 64 Greenville 59 87 65 88 / 0 0 7 31 Greenwood 59 87 63 88 / 0 0 3 20
JAN WATCHES/WARNINGS/ADVISORIES. MS . None. LA . None. AR . None.
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|Greenwood, Greenwood-LeFlore Airport, MS||24 mi||60 min||N 0||10.00 mi||Fair||63°F||59°F||87%||1018.3 hPa|
Link to 5 minute data for KGWO
Wind History from GWO (wind in knots)
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