Sunrise 6:05 AM   Sunset 7:54 PM Moonrise 5:26 PM   Moonset 3:43 AM

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GMZ455 Coastal Waters From Lower Atchafalaya River To Intracoastal City La Out 20 Nm- 316 Pm Cdt Tue May 21 2024
Tonight - Southeast winds 10 to 15 knots with gusts up to 20 knots. Seas around 2 feet. Wave detail: southeast 2 feet at 3 seconds. Wednesday - Southeast winds 10 to 15 knots. Seas around 2 feet. Wave detail: southeast 2 feet at 3 seconds. Wednesday night - Southeast winds 10 to 15 knots. Seas around 2 feet. Wave detail: southeast 2 feet at 3 seconds. Thursday - Southeast winds 10 to 15 knots with gusts up to 20 knots. Seas 2 to 3 feet. Wave detail: south 2 feet at 3 seconds. Thursday night - South winds 10 to 15 knots with gusts up to 20 knots. Seas 2 to 3 feet. Wave detail: south 2 feet at 3 seconds. Friday - South winds 10 to 15 knots with gusts up to 20 knots. Seas 2 to 3 feet. Wave detail: south 2 feet at 4 seconds. Friday night - South winds 10 to 15 knots. Seas 2 to 3 feet. Saturday - South winds 10 to 15 knots. Seas 2 to 3 feet. Saturday night - South winds 10 to 15 knots. Seas 2 to 3 feet. Sunday - South winds around 15 knots. Seas 2 to 3 feet. Sunday night - South winds 10 to 15 knots. Seas 2 to 4 feet.

GMZ400 316 Pm Cdt Tue May 21 2024
Synopsis - Southeast flow is expected to prevail through the period. Winds and seas are forecast to increase today due to the pressure gradient increasing between surface high pressure to the east and low pressure across the plains.

FXUS64 KLCH 212348 AFDLCH

Area Forecast Discussion National Weather Service Lake Charles LA 648 PM CDT Tue May 21 2024

New AVIATION

SHORT TERM
(Tonight through Thursday night)
Issued at 200 PM CDT Tue May 21 2024

Very little to no change in the day to day forecast and overall weather pattern for the period. The surface high pressure will remain off to the east of us with a disturbance moving into the Central Plains. As a result of that, we will have elevated to gusty southerly flow bringing in an abundance of moisture. Aloft there is a stubborn high pressure centered over Mexico, with ridging extending into the Gulf Coast States. This should keep us "dry" in terms of rain however it will be hot and humid.

MaxTs will range from the upper 80s to mid 90s with MinTs in the 70s. Dewpoints will be in the 70s as well yielding heat indices in the 94-102 range. Tis the season. Stay cool.

Stigger/87

LONG TERM
(Friday through next Monday)
Issued at 200 PM CDT Tue May 21 2024

A repetitive early summer pattern will persist throughout much of the long term period, with little day to day chances anticipated.
Aloft, a strong mid to upper level ridge will remain anchored from north/central Mexico across the Gulf of Mexico throughout the forecast period. This will result in a persistent warm and dry pattern, with highs expected to warm into the lower to mid-90s each afternoon through the beginning of next week. In addition, southerly flow at the surface will keep an continuous fetch of Gulf moisture across the region, allowing dewpoints to remain in the low to mid- 70s. This will in turn, hinder overnight lows from fall beyond the low to mid-70s each night.

Around the end of the forecast period models continue to want to swing a cold front through the region, although there remains a decent bit of uncertainty. Regardless, if this were to occur cooler temps are unlikely however, a reduction in dewpoints looks possible which would at least bring down heat indices and overnight lows for a brief period. This front may also be accompanied by a small chance showers early Tuesday, which looks to be our next best chance of precip for the foreseeable future.

17

AVIATION
(00Z TAFS)
Issued at 641 PM CDT Tue May 21 2024

MVFR to VFR conditions will persist through the evening hours.
Eastern sites, ARA, LFT continue to see mostly clear conditions through late evening before cloud cover builds from the west lowering and bordering MVFR thresholds. Western sites BPT and LCH will see these BKN decks under 3kft throughout the early morning hours keeping conditions primarily MVFR. Eastern and inland locations have more favorable chance at seeing periods of ground layer BR after 11z, therefore minimal reduction of visibility expected. Upper level cirrus decks above 10kft will continue through morning and afternoon while low level clouds become scattered under 5kft during the mid afternoon.

30



MARINE
Issued at 200 PM CDT Tue May 21 2024

Southeast flow is expected to prevail through the period. Winds and seas are forecast to increase today due to the pressure gradient increasing between surface high pressure to the east and low pressure across the Plains.

PRELIMINARY POINT TEMPS/POPS
AEX 71 88 71 91 / 0 10 10 0 LCH 76 86 74 87 / 0 10 0 0 LFT 74 89 74 90 / 0 0 0 0 BPT 76 87 75 89 / 10 0 0 0

LCH WATCHES/WARNINGS/ADVISORIES
LA...None.
TX...None.
GM...None.

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Eugene Island
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Tue -- 04:37 AM CDT     2.12 feet High Tide
Tue -- 04:42 AM CDT     Moonset
Tue -- 06:09 AM CDT     Sunrise
Tue -- 08:41 AM CDT     1.71 feet Low Tide
Tue -- 01:05 PM CDT     1.76 feet High Tide
Tue -- 06:25 PM CDT     Moonrise
Tue -- 07:29 PM CDT     -0.02 feet Low Tide
Tue -- 07:54 PM CDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION

Eugene Island, Louisiana, Tide feet

Shell Island
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Tue -- 04:42 AM CDT     Moonset
Tue -- 05:56 AM CDT     1.62 feet High Tide
Tue -- 06:09 AM CDT     Sunrise
Tue -- 10:05 AM CDT     1.31 feet Low Tide
Tue -- 02:24 PM CDT     1.34 feet High Tide
Tue -- 06:25 PM CDT     Moonrise
Tue -- 07:54 PM CDT     Sunset
Tue -- 08:53 PM CDT     -0.02 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION

Shell Island, Louisiana, Tide feet

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