textproduct: Lake Charles

KEY MESSAGES

- Heavy rain continues as a coastal low remains offshore. Widespread 1 to 3 inches is expected with pockets of up to 6 inches possible.

- An approaching cold front will keep precipitation lingering through early Saturday with milder air filtering in through early Sunday

- Dry and cool conditions expected Monday through the midweek as a stronger high pressure airmass moves into the region.

SHORT TERM

(Today through Saturday night) Issued at 1124 AM CST Thu Dec 4 2025

Widespread heavy rain continues to impact Acadiana with widespread 1 to 3 inches of rain and pockets of higher amounts. Tonight through Saturday we will continue to see periods of moderate to heavy showers as low pressure remains offshore with weakness aloft. Moisture will remain an issue as PWATs remain near the 90th percentile with low and mid-level RH values above 75%. This will create conditions that will be favorable for efficient rain rates and the possibility for localized flash flooding. As the surface low continues to move eastward, conditions will slowly improve. By the end of the weekend, dry air aloft will put an end to the widespread rain with any remaining convection remaining offshore.

Temperatures will remain chilly despite the overcast skies and rain with lows in the 30s and 40s and highs in the 50s. Overall, the short-term forecast is for wet and cold conditions.

LONG TERM

(Sunday through Thursday) Issued at 1124 AM CST Thu Dec 4 2025

The rest of the weekend and into next week looks to be calm due to post-frontal high pressure and strong cold air advection. At the start of the work week, we will be looking at some large temperature swings with highs in the 50s to 60s and lows back down into the 30s and 40s. This cool down will be short-lived as onshore flow will return as surface high pressure builds in the Gulf and pushes warm marine air north. Temperatures will rise in response, with our highs breaking back into the 70s and our lows into the 50s. The end of the week and going into the weekend will be benign as dry air aloft will keep PWATs around half an inch and PoPs will remain near zero.

AVIATION

(18Z TAFS) Issued at 1124 AM CST Thu Dec 4 2025

IFR to LIFR ceilings are impacting all terminals this morning and will continue to impact our airports through this forecast cycle. A coastal low continues to bring periods of moderate to heavy rain with visibility dropping to MVFR/IFR levels near the showers. Winds will remain from the N/NE around 10 knots through the TAF forecast.

MARINE

Issued at 1124 AM CST Thu Dec 4 2025

A small craft advisory is now in effect as ASCAT showed 20 knot winds in our western waters. Winds will remain gusty and offshore through tonight with the SCA ending at 09Z tonight. With the offshore flow there is a possibility for a low water event (-1.0 ft below MLLW) during low tide on Friday morning. For the weekend conditions will improve before another cold front brings more gusty offshore winds on Monday.

FIRE WEATHER

Issued at 1124 AM CST Thu Dec 4 2025

Widespread rain will continue to limit the danger of fire weather across the region. KBDI values have fallen from the 700s to 400 and below across the CWA. Early next week dry air will reduce the chance of rain to zero with gusty north winds and minimum RH values in the 50s.

PRELIMINARY POINT TEMPS/POPS

AEX 49 35 49 40 / 90 30 20 50 LCH 57 41 51 45 / 90 20 50 50 LFT 57 42 51 45 / 100 40 50 60 BPT 59 41 52 45 / 80 10 40 50

LCH WATCHES/WARNINGS/ADVISORIES

LA...None. TX...None. GM...Small Craft Advisory until 3 AM CST Friday for GMZ430-432-450- 452-470-472.