Lower Atchafalaya River to Intracoastal City, LA from 20 - 60 NM Marine Forecast
| Tonight...East Winds 10 To 15 Knots, Becoming Northeast 5 To 10 Knots After Midnight. Seas 2 To 3 Feet. Wave Detail: Southeast 3 Feet At 7 Seconds. |
| Thursday...Northeast Winds 10 To 15 Knots, Diminishing To 5 To 10 Knots In The Afternoon. Seas 2 To 3 Feet. Wave Detail: Southeast 3 Feet At 7 Seconds And Northeast 2 Feet At 4 Seconds. |
| Thursday Night...Northeast Winds 5 To 10 Knots. Seas Around 2 Feet. Wave Detail: Southeast 2 Feet At 6 Seconds. |
| Friday...Northeast Winds 5 To 10 Knots. Seas Around 2 Feet. Wave Detail: Northeast 2 Feet At 3 Seconds And Southeast 2 Feet At 6 Seconds. |
| Friday Night...East Winds 10 To 15 Knots With Gusts Up To 20 Knots. Seas 2 To 4 Feet. Wave Detail: East 4 Feet At 5 Seconds. |
| Saturday...East Winds 15 To 20 Knots With Gusts Up To 25 Knots. Seas 3 To 5 Feet, Occasionally To 6 Feet. Wave Detail: East 5 Feet At 6 Seconds. |
| Saturday Night...East Winds 20 To 25 Knots With Gusts Up To 30 Knots. Seas 5 To 7 Feet, Occasionally To 9 Feet. |
| Sunday...Northeast Winds 20 To 25 Knots. Seas 5 To 8 Feet, Occasionally To 10 Feet. A Slight Chance Of Showers In The Afternoon. |
| Sunday Night...East Winds 25 To 30 Knots. Seas 6 To 9 Feet, Occasionally To 11 Feet. |
| Monday...East Winds 20 To 25 Knots, Diminishing To 15 To 20 Knots In The Afternoon. Seas 5 To 8 Feet, Occasionally To 10 Feet, Subsiding To 4 To 6 Feet, Occasionally To 8 Feet In The Afternoon. |
| Monday Night...East Winds 15 To 20 Knots. Seas 4 To 6 Feet, Occasionally To 8 Feet. |
| Area Forecast Discussion National Weather Service Lake Charles LA 641pm CDT Tuesday Oct 20 2026 (This evening through next Monday) Issued at 229pm CDT Tuesday Oct 20 2026 Water vapor and upper air analysis depict broad ridging aloft over the central US this afternoon. An expansive area of surface high pressure centered over the Great Lakes dominates the eastern CONUS, leading to light easterly flow at the low levels over our CWA. A weak wave over the central Gulf has allowed deep layer moisture to increase slightly today, with the 18z LCH RAOB (Radiosonde Observation or Upper-Air Observation) reporting a PWAT (Precipitable Water) of 0.93 inches (up from 0.41 inches at this time yesterday). Surface dewpoints have climbed a bit from yesterday and now sit in the 50s across much of the CWA. This slight increase in moisture and cloud cover will be the only impact from this wave in our area, with any associated shower activity remaining well offshore. The upper level ridge will amplify and shift slightly to the east over the southern Plains through the end of this week, setting up an omega block pattern as upper-level troughs deepen over the southwest US and Florida. This will keep our CWA (County Warning Area) in a dry, subsident regime into the weekend. As the ridge axis gradually shifts eastward, a slight warming trend is expected. Afternoon highs will increase a degree or two each day, reaching the mid 80s by Friday. Northerly flow aloft and easterly flow at the surface will keep any Gulf moisture away from the area, with LREF mean PWAT (Precipitable Water) through this time in the 0.6-0.7 inch range, around 25th percentile relative to climatology. So despite the warming trend, it will generally feel more comfortable outside than in previous weeks, with dewpoints sitting in the 50s. Overnight lows through the week will generally range from near 50 for interior central LA to around 60 along the coast. The large-scale omega block looks to break up by the weekend, but surface and upper-level ridging will persist over our area, allowing dry conditions and seasonable temperatures to continue. At this time, there does not appear to be any appreciable chance of precipitation through at least the middle of next week. As such, especially given low afternoon humidity with the dry airmass in place, expect some elevated fire weather concerns each afternoon and a worsening of regional drought conditions throughout this time period. 64/Silas Marine Issued at 229pm CDT Tuesday Oct 20 2026 Breezy east winds continue across the offshore Gulf waters this afternoon into evening as a wave moves westward across the central Gulf. Winds of 10-20 kt and seas 2-6 feet will be possible. Thereafter, high pressure over the eastern US will yield east to northeast winds at 5-15 kt with low seas through the weekend and into next week. Fire Weather Issued at 229pm CDT Tuesday Oct 20 2026 An omega block pattern with a building ridge over the south-central US will keep dry conditions in place over the CWA through the weekend and into next week. Afternoon highs will be on a slight warming trend, with no real increase in moisture expected, which will allow RH to fall to the 25 to 35 percent range each afternoon. Although winds will remain light through the forecast period, out of the east at around 5-10 mph, fire danger is likely to be elevated each afternoon with the combination of the dry airmass and very dry fuels due to ongoing drought. NOAA Lake Charles LA Office: Watches - Warnings - Advisories LA...None. TX...None. GM...None. |
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