Marine Weather and Tide Forecast for Iowa, LA

DISCUSSION
(This afternoon through next Saturday)
Issued at 1103 AM CST Sun Nov 8 2026

Surface high pressure is centered over Arkansas. The low-level flow from this high is from the northeast, advecting dry air across the CWA Aloft, a cutoff low is located south of the Mexico border and is moving upper-level moisture across the region. While we could see some virga from the high clouds, the low levels are too dry for any rain to reach the surface. With this setup, we are looking at high clouds across the region but without any chances for rain.

The high pressure is forecast to shift south, moving overhead today and Monday. This will lead to further dry air advection on the eastern half of the CWA, while subsidence will dry out the rest of the area's low levels with 850 mb RH around 15%. As the high pressure is elongated to the northeast, there will be no moisture return in the low levels. Rain chances will stay near zero for the first half of the week.

On Thursday, we will see the first blast of cold air across the region as a cold front with significant cold air advection arrives.
Unfortunately, rain chances will be near zero with this front as moisture return won’t happen before it.

Temperatures behind the front will be chilly, with highs at the end of the week in the mid to upper 60s and lows in the 40s south of I- 10 and in the 30s farther north.

AVIATION
(18Z TAFS)
Issued at 1103 AM CST Sun Nov 8 2026

Northeasterly winds around 10 kt will prevail through the afternoon, diminishing slightly to around 5-10 kt with sunset. VFR conditions prevail throughout the entire TAF period, as high clouds associated with an upper low over Texas continue to stream across the area.

MARINE
Issued at 1103 AM CST Sun Nov 8 2026

Winds will start to decrease this afternoon and will drop below the 20 knot criteria for a Small Craft Advisory. To start the work week, conditions will be benign with winds below 10 knots and waves between 1 and 2 feet.

FIRE WEATHER
Issued at 1103 AM CST Sun Nov 8 2026

High pressure is located overhead and will dominate our weather pattern for the first half of the week. Dry conditions will remain in place with minRH each afternoon around 30%. Fuels remain dry with seasonal ERC values above 70%. In addition, KBDI values remain high between 600 and 700 for most of the CWA The main limiting factor is light winds, with 20 ft winds remaining below 10 mph for the first half of the week. If winds look to increase, then Fire Danger Statements could be needed before Thursday.

A dry cold front will move across the CWA on Thursday. Winds behind this front will be elevated and dry. Fire partners should monitor the forecast closely for Red Flag Warning or other fire-related dangers.

LCH WATCHES/WARNINGS/ADVISORIES
LA...None.
TX...None.
GM...Small Craft Advisory until noon CST today for GMZ450-470.