Marine Weather and Tide Forecast for Cut Off, LA
May 17, 2024 3:19 PM CDT (20:19 UTC) Change Location
Sunrise 6:07 AM Sunset 7:51 PM Moonrise 1:44 PM Moonset 1:52 AM |
GMZ550 Coastal Waters From Port Fourchon La To Lower Atchafalaya River La Out 20 Nm- Coastal Waters From The Southwest Pass Of The Mississippi River To Port Fourchon Louisiana Out 20 Nm- 1128 Am Cdt Fri May 17 2024
.small craft advisory in effect through Saturday morning - .
This afternoon - South winds 10 to 15 knots, becoming southwest 5 to 10 knots late. Seas 2 to 4 feet, occasionally to 5 feet. Wave detail: south 4 feet at 6 seconds. A slight chance of Thunderstorms early. A slight chance of showers and Thunderstorms late.
Tonight - South winds 5 to 10 knots with gusts up to 20 knots, increasing to 15 to 20 knots with gusts up to 30 knots after midnight. Seas 2 to 4 feet, occasionally to 5 feet. Wave detail: south 4 feet at 7 seconds. A slight chance of showers and Thunderstorms in the evening, then showers likely with a chance of Thunderstorms after midnight.
Saturday - North winds 15 to 20 knots with gusts up to 30 knots, becoming south 10 to 15 knots with gusts up to 20 knots in the afternoon. Seas 2 to 4 feet, occasionally to 5 feet. Wave detail: south 4 feet at 8 seconds. Showers with a chance of Thunderstorms in the morning, then a chance of showers and Thunderstorms in the afternoon with visibility 1 nm or less.
Saturday night - South winds 5 to 10 knots, becoming west after midnight. Seas 2 to 3 feet. Wave detail: south 3 feet at 8 seconds. A slight chance of showers and Thunderstorms.
Sunday - North winds around 5 knots, becoming east in the afternoon. Seas 2 to 3 feet. Wave detail: south 3 feet at 8 seconds.
Sunday night - South winds around 5 knots. Seas around 2 feet. Wave detail: south 2 feet at 7 seconds.
Monday - Southeast winds around 5 knots. Seas 1 to 2 feet. Wave detail: south 2 feet at 7 seconds.
Monday night - South winds 5 to 10 knots. Seas 1 to 2 feet. Wave detail: southeast 2 feet at 6 seconds.
Tuesday - Southeast winds 5 to 10 knots. Seas around 2 feet. Wave detail: south 2 feet at 5 seconds.
Tuesday night - South winds 10 to 15 knots. Seas 2 to 3 feet. Wave detail: south 2 feet at 5 seconds.
winds and seas higher in and near Thunderstorms.
winds and seas higher in and near Thunderstorms.
GMZ500 1128 Am Cdt Fri May 17 2024
Synopsis for pascagoula to atchafalaya river out 60 nm -
a stationary boundary will remain over the region this afternoon before eventually moving southeastward as a cold front on Saturday. South to southwesterly winds will be hazardous to small craft, before subsiding and shifting out of the northwest in wake of the cold frontal passage. High pressure builds in Sunday and remains over the waters through early next week.
a stationary boundary will remain over the region this afternoon before eventually moving southeastward as a cold front on Saturday. South to southwesterly winds will be hazardous to small craft, before subsiding and shifting out of the northwest in wake of the cold frontal passage. High pressure builds in Sunday and remains over the waters through early next week.
Area Discussion for - New Orleans/Baton Rouge, LA
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FXUS64 KLIX 171926 AFDLIX
Area Forecast Discussion National Weather Service New Orleans LA 226 PM CDT Fri May 17 2024
New UPDATE, SHORT TERM, LONG TERM, AVIATION, MARINE
UPDATE
Issued at 200 PM CDT Fri May 17 2024
Updated forecast through Saturday with a focus on timing of severe wx and heavy rainfall threat for the next event.
Convection has struggled to develop so far today (and we aren't complaining). A special 18Z RAOB sounding from KLIX shows a subsidence inversion near 850 mb in wake of last night's MCS that has helped to cap convection thus far. We are closely monitoring for convection to initiate along the quasi-stationary frontal boundary that is located just south of a line from Lafayette to Baton Rouge to Hattiesburg. This boundary has become increasingly better-defined as differential heating has magnified the temperature gradient (upper 60s/lower 70s on the cool side of the boundary and mid 80s in the warm sector). Low-level convergence has also strengthened near the front and this will provide a source of lift, but appears to be too shallow for convective updrafts to reach the LFC. Recent satellite trends show the CU field is building just south of the warm front along the Southshore, Coastal MS, and parts of coastal southeastern LA. This is the area where storms are most likely to initiate through mid afternoon. Expect coverage of storms to be widely scaterred given the absence of deeper forcing. However, any storms that to break the cap has the potential to quickly become severe with an EML overhead and strong instability rooted in the boundary layer. These storms will be capable of producing locally damaging winds (favorable wet microburst environment with high instability and mid-level dry air) and large hail (steep mid-level lapse rates).
SHORT TERM
(Today through Saturday)
Issued at 235 AM CDT Fri May 17 2024
Although there are a few storms remaining early this morning, any severe threat likely limited to borderline hail as main portion of shortwave is east of the area. Quite a bit of uncertainty regarding severe threat and heavy rain threat over the next 24 hours. Deepest moisture remains just offshore where dew points are in the mid and upper 70s, but drier air is over the northern portion of the area, where dew points are in the lower 60s. Next shortwave actually won't approach the area until the overnight period tonight into Saturday morning when precipitable water values will again approach 2 inches, as southerly surface winds pull moisture back into the area. Quite a bit of mid level dry air for much of the area until perhaps 06z Saturday, and would anticipate that instantaneous areal coverage during the day today should remain on the scattered side, with a significant increase in areal coverage during the mid to late evening hours. Drier air returns during the day Saturday.
Will keep the Flood Watch in place, as there was a fairly sizeable area of 1.5 to 3 inch rainfalls, and another inch or two on top of that overnight tonight could cause runoff issues.
Will not move off the NBM temperature forecast at this time, but the main question for high temperatures today will be cloud cover.
LONG TERM
(Saturday night through Thursday)
Issued at 235 AM CDT Fri May 17 2024
Upper ridging builds from Mexico into the Lower Mississippi River Valley beginning Saturday evening through much or all of the workweek. At present, it appears that any significant chance of precipitation beyond tomorrow morning is likely to wait until beyond the end of the forecast package, with at least some potential to remain dry through next weekend. Temperatures are expected to remain above normal through the forecast period.
AVIATION
(18Z TAFS)
Issued at 108 PM CDT Fri May 17 2024
A stationary boundary was drapped across the region this afternoon. Low clouds and fog has been socked in north of the boundary at KBTR and KMCB. Expected IFR conditions to continue through most of the afternoon although eventual improvement to MVFR should occur late in the day (between 21Z and 00Z). South of the boundary, CIGs are higher but a CU field has developed and kept the other TAF sites in MVFR CIGs . Expect bases to gradually increase through the rest of the afternoon and eventually VFR CIGs will become increasingly common south of the front. Coverage of showers and storms will be too isolated to mention in 18Z TAFs before about 02Z this evening. Showers and storms will become better organized late this evening and especially overnight as a disturbance approaches. This activity will be focused along the front which will progress slowly southward through the area.
Confidence in heavy rain and an extended period of IFR/LIFR conditions increases farther south. This is reflected in the 18Z TAFs with the greatest restrictions and longest period of TSRA mentioned for HUM, MSY, NEW, and GPT.
MARINE
Issued at 108 PM CDT Fri May 17 2024
The strongest winds thus far today has been present across the far southeastern coastal waters, but even here observations marginally support a SCA with occasional gusts to 20 kt. Winds have actually become light over the lakes where the pressure gradient is light near a stationary boundary.
Isolated thunderstorms are expected to develop near the coast late this afternoon and early evening. Although coverage will be limited, any of these storms have the potential to produce locally strong winds in excess of 34 kt, large hail, heavy downpours, lightning, and higher seas. The risk of hazardous conditions on the waters will increase overnight and continue through Saturday morning as storms organize along the front and move southward. Some of our model guidance is showing the potential for intense convective wind gusts in excess of 50 kt, perhaps locally to hurricane strength.
PRELIMINARY POINT TEMPS/POPS
MCB 66 84 65 88 / 60 30 0 10 BTR 70 87 70 93 / 60 30 0 0 ASD 69 84 69 92 / 70 70 0 10 MSY 71 84 73 90 / 80 70 0 10 GPT 69 81 69 89 / 80 80 10 10 PQL 69 82 67 91 / 70 80 10 10
LIX WATCHES/WARNINGS/ADVISORIES
LA...Small Craft Advisory until noon CDT Saturday for LAZ068.
Flood Watch through Saturday morning for LAZ034>037-039-046>048- 057-058-060-064-071-076>087-089.
GM...Small Craft Advisory until noon CDT Saturday for GMZ530-532-534- 536-538-550-552-555-557-570-572-575-577.
MS...Flood Watch through Saturday morning for MSZ068>071-077-083>088.
GM...Small Craft Advisory until noon CDT Saturday for GMZ532-534-536- 538-550-552-555-557-570-572-575-577.
Area Forecast Discussion National Weather Service New Orleans LA 226 PM CDT Fri May 17 2024
New UPDATE, SHORT TERM, LONG TERM, AVIATION, MARINE
UPDATE
Issued at 200 PM CDT Fri May 17 2024
Updated forecast through Saturday with a focus on timing of severe wx and heavy rainfall threat for the next event.
Convection has struggled to develop so far today (and we aren't complaining). A special 18Z RAOB sounding from KLIX shows a subsidence inversion near 850 mb in wake of last night's MCS that has helped to cap convection thus far. We are closely monitoring for convection to initiate along the quasi-stationary frontal boundary that is located just south of a line from Lafayette to Baton Rouge to Hattiesburg. This boundary has become increasingly better-defined as differential heating has magnified the temperature gradient (upper 60s/lower 70s on the cool side of the boundary and mid 80s in the warm sector). Low-level convergence has also strengthened near the front and this will provide a source of lift, but appears to be too shallow for convective updrafts to reach the LFC. Recent satellite trends show the CU field is building just south of the warm front along the Southshore, Coastal MS, and parts of coastal southeastern LA. This is the area where storms are most likely to initiate through mid afternoon. Expect coverage of storms to be widely scaterred given the absence of deeper forcing. However, any storms that to break the cap has the potential to quickly become severe with an EML overhead and strong instability rooted in the boundary layer. These storms will be capable of producing locally damaging winds (favorable wet microburst environment with high instability and mid-level dry air) and large hail (steep mid-level lapse rates).
SHORT TERM
(Today through Saturday)
Issued at 235 AM CDT Fri May 17 2024
Although there are a few storms remaining early this morning, any severe threat likely limited to borderline hail as main portion of shortwave is east of the area. Quite a bit of uncertainty regarding severe threat and heavy rain threat over the next 24 hours. Deepest moisture remains just offshore where dew points are in the mid and upper 70s, but drier air is over the northern portion of the area, where dew points are in the lower 60s. Next shortwave actually won't approach the area until the overnight period tonight into Saturday morning when precipitable water values will again approach 2 inches, as southerly surface winds pull moisture back into the area. Quite a bit of mid level dry air for much of the area until perhaps 06z Saturday, and would anticipate that instantaneous areal coverage during the day today should remain on the scattered side, with a significant increase in areal coverage during the mid to late evening hours. Drier air returns during the day Saturday.
Will keep the Flood Watch in place, as there was a fairly sizeable area of 1.5 to 3 inch rainfalls, and another inch or two on top of that overnight tonight could cause runoff issues.
Will not move off the NBM temperature forecast at this time, but the main question for high temperatures today will be cloud cover.
LONG TERM
(Saturday night through Thursday)
Issued at 235 AM CDT Fri May 17 2024
Upper ridging builds from Mexico into the Lower Mississippi River Valley beginning Saturday evening through much or all of the workweek. At present, it appears that any significant chance of precipitation beyond tomorrow morning is likely to wait until beyond the end of the forecast package, with at least some potential to remain dry through next weekend. Temperatures are expected to remain above normal through the forecast period.
AVIATION
(18Z TAFS)
Issued at 108 PM CDT Fri May 17 2024
A stationary boundary was drapped across the region this afternoon. Low clouds and fog has been socked in north of the boundary at KBTR and KMCB. Expected IFR conditions to continue through most of the afternoon although eventual improvement to MVFR should occur late in the day (between 21Z and 00Z). South of the boundary, CIGs are higher but a CU field has developed and kept the other TAF sites in MVFR CIGs . Expect bases to gradually increase through the rest of the afternoon and eventually VFR CIGs will become increasingly common south of the front. Coverage of showers and storms will be too isolated to mention in 18Z TAFs before about 02Z this evening. Showers and storms will become better organized late this evening and especially overnight as a disturbance approaches. This activity will be focused along the front which will progress slowly southward through the area.
Confidence in heavy rain and an extended period of IFR/LIFR conditions increases farther south. This is reflected in the 18Z TAFs with the greatest restrictions and longest period of TSRA mentioned for HUM, MSY, NEW, and GPT.
MARINE
Issued at 108 PM CDT Fri May 17 2024
The strongest winds thus far today has been present across the far southeastern coastal waters, but even here observations marginally support a SCA with occasional gusts to 20 kt. Winds have actually become light over the lakes where the pressure gradient is light near a stationary boundary.
Isolated thunderstorms are expected to develop near the coast late this afternoon and early evening. Although coverage will be limited, any of these storms have the potential to produce locally strong winds in excess of 34 kt, large hail, heavy downpours, lightning, and higher seas. The risk of hazardous conditions on the waters will increase overnight and continue through Saturday morning as storms organize along the front and move southward. Some of our model guidance is showing the potential for intense convective wind gusts in excess of 50 kt, perhaps locally to hurricane strength.
PRELIMINARY POINT TEMPS/POPS
MCB 66 84 65 88 / 60 30 0 10 BTR 70 87 70 93 / 60 30 0 0 ASD 69 84 69 92 / 70 70 0 10 MSY 71 84 73 90 / 80 70 0 10 GPT 69 81 69 89 / 80 80 10 10 PQL 69 82 67 91 / 70 80 10 10
LIX WATCHES/WARNINGS/ADVISORIES
LA...Small Craft Advisory until noon CDT Saturday for LAZ068.
Flood Watch through Saturday morning for LAZ034>037-039-046>048- 057-058-060-064-071-076>087-089.
GM...Small Craft Advisory until noon CDT Saturday for GMZ530-532-534- 536-538-550-552-555-557-570-572-575-577.
MS...Flood Watch through Saturday morning for MSZ068>071-077-083>088.
GM...Small Craft Advisory until noon CDT Saturday for GMZ532-534-536- 538-550-552-555-557-570-572-575-577.
Stations | Dist | Age | Wind | Air Temp | Water Temp | Waves | inHg | DewPt |
BYGL1 - 8762482 - Bayou Gauche, LA | 19 mi | 50 min | 81°F | 81°F | 29.79 | |||
GISL1 - 8761724 - Grand Isle, LA | 27 mi | 50 min | SSW 7G | 81°F | 80°F | 29.80 | ||
CARL1 | 31 mi | 50 min | 75°F | |||||
NWCL1 - 8761927 - New Canal, LA | 37 mi | 50 min | WSW 5.1G | 84°F | 80°F | 29.79 | ||
SHBL1 - 8761305 - Shell Beach, LA | 43 mi | 50 min | SSW 12G | 82°F | 73°F | 29.79 | ||
LOPL1 - Louisiana Offshore Oil Port, LA | 47 mi | 69 min | SW 12G | 80°F | 4 ft | 29.80 | 78°F | |
TESL1 - Tesoro Marine Terminal - 8764044 - Berwick, LA | 49 mi | 50 min | SW 4.1G | 83°F | 75°F | 29.79 |
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No data
Airport Reports
EDIT HIDE  Help Click EDIT to display multiple airports. Follow links for more data.Airport | Dist | Age | Wind kt | Vis | Sky | Weather | Temp | DewPt | RH | inHg |
KGAO SOUTH LAFOURCHE LEONARD MILLER JR,LA | 7 sm | 24 min | SW 07 | 7 sm | Overcast | 82°F | 77°F | 84% | 29.78 | |
KHUM HOUMATERREBONNE,LA | 17 sm | 1.5 hrs | W 08 | 5 sm | Overcast | 84°F | 77°F | 79% | 29.78 |
Tide / Current for Manilla, Mississippi River Delta, Louisiana
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Manilla
Click for Map
Fri -- 02:50 AM CDT Moonset
Fri -- 06:06 AM CDT Sunrise
Fri -- 06:08 AM CDT 0.28 feet Low Tide
Fri -- 02:42 PM CDT Moonrise
Fri -- 07:45 PM CDT 0.54 feet High Tide
Fri -- 07:46 PM CDT Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Click for Map
Fri -- 02:50 AM CDT Moonset
Fri -- 06:06 AM CDT Sunrise
Fri -- 06:08 AM CDT 0.28 feet Low Tide
Fri -- 02:42 PM CDT Moonrise
Fri -- 07:45 PM CDT 0.54 feet High Tide
Fri -- 07:46 PM CDT Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Manilla, Mississippi River Delta, Louisiana, Tide feet
12 am |
0.5 |
1 am |
0.5 |
2 am |
0.4 |
3 am |
0.4 |
4 am |
0.3 |
5 am |
0.3 |
6 am |
0.3 |
7 am |
0.3 |
8 am |
0.3 |
9 am |
0.4 |
10 am |
0.4 |
11 am |
0.4 |
12 pm |
0.5 |
1 pm |
0.5 |
2 pm |
0.5 |
3 pm |
0.5 |
4 pm |
0.5 |
5 pm |
0.5 |
6 pm |
0.5 |
7 pm |
0.5 |
8 pm |
0.5 |
9 pm |
0.5 |
10 pm |
0.5 |
11 pm |
0.5 |
Cocodrie
Click for Map
Fri -- 02:52 AM CDT Moonset
Fri -- 05:45 AM CDT 0.37 feet Low Tide
Fri -- 06:09 AM CDT Sunrise
Fri -- 01:30 PM CDT 0.69 feet High Tide
Fri -- 02:45 PM CDT Moonrise
Fri -- 07:49 PM CDT Sunset
Fri -- 08:35 PM CDT 0.58 feet Low Tide
Fri -- 11:33 PM CDT 0.58 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Click for Map
Fri -- 02:52 AM CDT Moonset
Fri -- 05:45 AM CDT 0.37 feet Low Tide
Fri -- 06:09 AM CDT Sunrise
Fri -- 01:30 PM CDT 0.69 feet High Tide
Fri -- 02:45 PM CDT Moonrise
Fri -- 07:49 PM CDT Sunset
Fri -- 08:35 PM CDT 0.58 feet Low Tide
Fri -- 11:33 PM CDT 0.58 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Cocodrie, Terrebonne Bay, Louisiana, Tide feet
12 am |
0.6 |
1 am |
0.5 |
2 am |
0.5 |
3 am |
0.4 |
4 am |
0.4 |
5 am |
0.4 |
6 am |
0.4 |
7 am |
0.4 |
8 am |
0.4 |
9 am |
0.5 |
10 am |
0.6 |
11 am |
0.6 |
12 pm |
0.7 |
1 pm |
0.7 |
2 pm |
0.7 |
3 pm |
0.7 |
4 pm |
0.6 |
5 pm |
0.6 |
6 pm |
0.6 |
7 pm |
0.6 |
8 pm |
0.6 |
9 pm |
0.6 |
10 pm |
0.6 |
11 pm |
0.6 |
New Orleans/Baton Rouge, LA,
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