Marine Weather and Tides
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 6:42AM||Sunset 6:18PM||Tuesday March 2, 2021 7:58 PM CST (01:58 UTC)||Moonrise 10:13PM||Moonset 9:03AM||Illumination 81%|
7 Day Forecast for Marine Location Near Nacogdoches, TXHourly EDIT Help
Area Discussion for - Shreveport, LA  (on/off)  Help NOTE: mouseover dotted underlined text for definition
FXUS64 KSHV 022325 AFDSHV
Area Forecast Discussion National Weather Service Shreveport LA 525 PM CST Tue Mar 2 2021
AVIATION. Surface high pressure across the region to maintain light and variable winds overnight, becoming east at around 5 knots on Wednesday. Low-level moisture across the region could support patchy ground fog across much of southern Arkansas and north Louisiana by daybreak. Some terminal sites including ELD and MLU could see FZFG conditions. Conditions to improve to VFR by 03/15Z. /05/
PREV DISCUSSION. /issued 253 PM CST Tue Mar 2 2021/
SHORT TERM . /Tonight through Wednesday Night/
The back edge of the -RA has exited the region stage right into the Lower MS Valley, along the base of the upper trough extending from the closed low which has shifted E into ECntrl AR. Much of the elevated cigs are following suit, although some cu and stratocu cigs have redeveloped farther W across portions of SCntrl AR and NCntrl LA, which has helped limit the extent of insolation over these areas. However, these too should erode during the evening and drier air advects in from the NE and subsidence increases on the backside of the sfc-H850 low that will lift NE from the Nrn Gulf into Coastal AL/FL. The center of sfc ridging will backbuild SW into the region tonight from Ern AR, and given the very dry air mass in place yielding a clear sky, will set the stage for good radiational cooling atop the very wet grounds in place. Thus, patchy FG should develop late tonight over much of the region, with the main focus centered over SCntrl AR/much of N LA which have seen limited sun today and currently have lower temp/dewpoint depressions. In fact, some patchy FZFG will be possible as well over these areas where temps fall to or below freezing, with the evening shift monitoring this closely should this become more widespread late. Confidence is not that great attm though with the extent of FG development (hence the patchy wording being maintained), with varying discrepancies still amongst the "drier" NAM/GFS, compared to the more bullish HRRR. However, any FG that develops late will lift by mid-morning Wednesday.
Sfc ridging will be maintained over the region Wednesday, as the flow aloft flattens out in wake of the departure of the closed low to the E. Some flat ridging is progged to develop over the Srn Plains Wednesday afternoon/night though, ahead of the next closed low expected to move ashore across Srn CA, before ejecting NE into the Four Corners Region by Thursday morning. Another day of strong insolation and subsidence beneath the sfc ridge should yield a return of more seasonal temps areawide, and have trended max temps a couple degrees above the cool-biased NBM. Temps Wednesday night should begin a gradual moderating trend as a weak SSErly bndry lyr flow returns as the ridge begins to drift E into the Lower MS Valley, with readings ranging from the mid 30s to near 40 degrees. Any patchy FG development Wednesday night looks to be more limited given the full day of solar insolation, with the warming trend continuing into Thursday.
LONG TERM . /Thursday through next Tuesday/
Northwest flow being steered by an upper-level ridge will keep temperatures slightly above average during the day Thursday, with dry conditions and mostly clear skies dominating throughout the region.
The next rainmaker will arrive on Friday as an upper-level low slides into the area from the northwest. Clouds will begin building in Thursday evening, keeping overnight lows relatively mild. Rainfall may begin as early as midnight Friday in our northwest zones, propagating to the southeast throughout the day Friday and exiting the area by the early hours of Saturday. The orientation of the upper-level trough may induce elevated instability, so some embedded thunder cannot be ruled out. New rainfall accumulations are not expected to exceed a tenth to a quarter of an inch. High temps on Friday will remain at or slightly below average, from the upper 50s to low 60s.
Once the rainfall and cloud cover clear out, dry conditions and mostly clear to partly cloudy skies are expected through the weekend, with temperatures trending warmer each day. Northerly flow associated with the next upper-level ridge will suppress rainfall chances through Monday, while keeping afternoon highs above normal early next week.
The next disturbance on the horizon for next week will be steered by an upper-level low over the northern plains, guiding a cold front into the area. The boundary looks like it will be draped across the southern plains by next Tuesday, and will introduce the next chance of precipitation to the Four-State Region. /26/
PRELIMINARY POINT TEMPS/POPS. SHV 34 66 38 69 / 0 0 0 0 MLU 32 63 37 69 / 0 0 0 0 DEQ 31 66 35 68 / 0 0 0 0 TXK 33 64 36 68 / 0 0 0 0 ELD 30 65 35 69 / 0 0 0 0 TYR 35 67 40 69 / 0 0 0 0 GGG 34 66 38 69 / 0 0 0 0 LFK 34 68 38 71 / 0 0 0 0
SHV WATCHES/WARNINGS/ADVISORIES. AR . None. LA . None. OK . None. TX . None.
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|Nacogdoches, A L Mangham Jr. Regional Airport, TX||4 mi||62 min||ENE 3||10.00 mi||Fair||50°F||37°F||61%||1022.1 hPa|
Link to 5 minute data for KOCH
Wind History from OCH (wind in knots)
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