251
FNUS74 KLIX 181732
FWSLIX
SPOT FORECAST FOR GRAND ISLE BLOCK 59 RELEASE *INLAND*...NOAA
NATIONAL WEATHER SERVICE NEW ORLEANS LA
1232 PM CDT SAT APR 18 2026
IF CONDITIONS BECOME UNREPRESENTATIVE, CONTACT THE NATIONAL WEATHER
SERVICE.
WE CAN BE REACHED AT (985) 649-0357 IF YOU HAVE QUESTIONS OR CONCERNS
WITH THIS FORECAST.
DISCUSSION
SOUTH TO SOUTHEASTERLY FLOW WILL REMAIN PREVALENT ACROSS THE
REGION THROUGH TODAY WITH WIND SPEEDS IN THE 10-15 MPH RANGE.
MOISTURE LEVELS WILL REMAIN LARGELY UNCHANGED WITH MIN RH VALUES
IN THE 40S ACROSS INLAND AREAS AND CLOSER TO THE LOW 50S NEAR THE
COAST. SOME FOG WILL BE POSSIBLE EARLY THIS MORNING, ESPECIALLY
ACROSS INTERIOR SECTIONS OF SOUTHWEST MISSISSIPPI AND THE FLORIDA
PARISHES IN SOUTHEAST LOUISIANA. A COLD FRONT WILL MOVE THROUGH
WITH A LINE OF SHOWERS AND A FEW STORMS BRINGING SOME MUCH NEEDED
RAINS TO THE AREA. THIS MAY NOT BE A WETTING RAIN FOR MOST OF THE
AREA THOUGH. RH VALUES WILL PLUMMET SUNDAY TO THE MID TO LOWER
30S AND REMAIN THIS WAY THROUGH MONDAY. A SLOW MODERATION IN RH
VALUES WILL OCCUR AFTERWARDS.
REST OF TODAY
SKY/WEATHER.........PARTLY SUNNY (45-55 PERCENT).
CHANCE OF PCPN......0 PERCENT.
MAX TEMPERATURE.....AROUND 77.
MIN HUMIDITY........77 PERCENT.
MAX APPARENT TEMP...77.
SURFACE WINDS (KTS).SOUTH WINDS 7 TO 8 KNOTS.
TRANSPORT WINDS.....SOUTH 10 TO 13 MPH.
TRANSPORT WINDS M/S.SOUTH 4 TO 6 METERS/SECOND.
WAVE HEIGHT.........LESS THAN 1 FOOT.
WAVE PERIOD.........2 SECONDS.
CEILING (KFT).......25.
WIND (20 FT)........SOUTH WINDS 7 TO 8 MPH.
TIME (CDT) 2PM 3PM 4PM 5PM
SKY (%).........35 43 67 65
WEATHER COV.....
WEATHER TYPE....
TSTM COV........
CHC OF PCPN (%).0 0 0 0
TEMP............76 77 76 77
RH..............81 77 81 80
APARNT TMP (F)..76 77 76 77
20 FT WIND DIR..S S SSW SSW
20 FT WIND SPD..8 8 9 9
20 FT WIND GUST.9 10 13 13
SFC WND DIR.....S S SSW SSW
SFC WND SPD KTS.7 7 8 8
SFC WND GST.....9 10 13 13
TRANSP WIND DIR.S SSW SSW SSW
TRANSP WIND SPD.10 12 13 12
TRANS WIND DIR..S SSW SSW SSW
TRANS SPD (M/S).4 5 6 5
WAVE PERIOD (S).2 1 1 1
WAVE HEIGHT (FT)0 0 0 0
CEILING (KFT)...25 25 25 25
TONIGHT
SKY/WEATHER.........MOSTLY CLOUDY (80-90 PERCENT). CHANCE OF
SHOWERS AND THUNDERSTORMS OVERNIGHT.
CHANCE OF PCPN......50 PERCENT.
MIN TEMPERATURE.....AROUND 63.
MAX HUMIDITY........87 PERCENT.
MAX APPARENT TEMP...77.
SURFACE WINDS (KTS).BREEZY. WEST WINDS 6 TO 8 KNOTS SHIFTING TO THE
NORTHWEST 6 TO 7 KNOTS LATE IN THE EVENING,
THEN SHIFTING TO THE NORTH 10 TO 16 KNOTS
OVERNIGHT INCREASING TO 21 TO 24 KNOTS AFTER 3
AM.
TRANSPORT WINDS.....SOUTHWEST 10 TO 12 MPH SHIFTING TO THE
NORTHWEST 12 TO 18 MPH OVERNIGHT, THEN
INCREASING TO NORTH 22 TO 31 MPH AFTER 3 AM.
TRANSPORT WINDS M/S.SOUTHWEST AROUND 4 METERS/SECOND INCREASING TO
4 TO 5 METERS/SECOND IN THE EVENING, THEN
SHIFTING TO THE NORTHWEST 5 TO 8 METERS/SECOND
OVERNIGHT INCREASING TO NORTH 10 TO 14
METERS/SECOND AFTER 3 AM.
WAVE HEIGHT.........1 FOOT.
WAVE PERIOD.........2 SECONDS.
CEILING (KFT).......25 DECREASING TO 5.8 LATE IN THE EVENING, THEN
DECREASING TO 1.8 OVERNIGHT DECREASING TO 1.3
AFTER 3 AM INCREASING TO 1.8.
WIND (20 FT)........BREEZY. SOUTHWEST WINDS 6 TO 8 MPH SHIFTING TO
THE NORTHWEST 6 TO 7 MPH LATE IN THE EVENING,
THEN SHIFTING TO THE NORTH 10 TO 17 MPH
OVERNIGHT INCREASING TO 22 TO 25 MPH AFTER 3
AM. GUSTY AND ERRATIC WINDS EXPECTED NEAR
THUNDERSTORMS OVERNIGHT. GUSTY AND ERRATIC
WINDS EXPECTED NEAR THUNDERSTORMS AFTER 3 AM.
TIME (CDT) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
SKY (%).........74 73 82 77 85 88 89 87 92 91 90 87
WEATHER COV..... CHC CHC CHC CHC SCH
WEATHER TYPE.... RW RW RW RW RW
TSTM COV........ CHC CHC CHC SCH SCH
CHC OF PCPN (%).0 0 0 0 0 10 10 30 50 40 30 20
TEMP............76 77 76 76 77 76 75 75 74 72 69 68
RH..............81 76 82 82 79 82 84 84 84 84 87 84
APARNT TMP (F)..76 77 76 76 77 76 75 75 74 72 69 68
20 FT WIND DIR..SSW SSW SW SW WSW W WNW NW NNW N N N
20 FT WIND SPD..9 9 8 7 7 7 7 8 12 18 24 28
20 FT WIND GUST.12 12 10 9 9 9 9 10 15 20 26 30
SFC WND DIR.....SSW SSW SW SW WSW W WNW NW NNW N N N
SFC WND SPD KTS.8 8 7 6 6 6 6 7 10 16 21 24
SFC WND GST.....12 12 10 9 9 9 9 10 15 20 26 30
TRANSP WIND DIR.SSW SSW SW WSW WSW W W WNW NW N N N
TRANSP WIND SPD.10 12 12 10 10 10 12 15 18 22 30 31
TRANS WIND DIR..SSW SSW SW WSW WSW W W WNW NW N N N
TRANS SPD (M/S).4 5 5 4 4 4 5 7 8 10 13 14
WAVE PERIOD (S).1 1 1 1 1 1 1 1 1 1 1 2
WAVE HEIGHT (FT)0 0 0 0 0 0 0 0 0 1 1 1
CEILING (KFT)...25 25 25 25 25 5.8 5.8 5.8 1.8 1.8 1.3 1.8
SUNDAY
SKY/WEATHER.........MOSTLY CLOUDY (70-80 PERCENT) THEN BECOMING
MOSTLY SUNNY (35-45 PERCENT). CHANCE OF SHOWERS
AND SLIGHT CHANCE OF THUNDERSTORMS EARLY IN THE
MORNING.
CHANCE OF PCPN......30 PERCENT.
MAX TEMPERATURE.....AROUND 71.
MIN HUMIDITY........46 PERCENT.
MAX APPARENT TEMP...70.
SURFACE WINDS (KTS).BREEZY. NORTHEAST WINDS 20 TO 27 KNOTS.
TRANSPORT WINDS.....NORTHEAST 23 TO 32 MPH.
TRANSPORT WINDS M/S.NORTHEAST 10 TO 14 METERS/SECOND.
WAVE HEIGHT.........1 FOOT.
WAVE PERIOD.........2 SECONDS.
CEILING (KFT).......1.8 DECREASING TO 1.3 LATE IN THE MORNING, THEN
INCREASING TO 1.8 LATE IN THE MORNING
INCREASING TO 3.5 EARLY IN THE AFTERNOON
INCREASING TO 25 DECREASING TO 10 EARLY IN THE
AFTERNOON INCREASING TO 25.
WIND (20 FT)........BREEZY. NORTHEAST WINDS 21 TO 29 MPH. GUSTY AND
ERRATIC WINDS EXPECTED NEAR THUNDERSTORMS EARLY
IN THE MORNING.
TIME (CDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........91 89 88 80 75 69 64 58 57 48 37 29
WEATHER COV.....CHC CHC CHC CHC
WEATHER TYPE....RW RW RW RW
TSTM COV........SCH SCH SCH SCH
CHC OF PCPN (%).30 30 30 30 10 10 10 10 10 0 0 0
TEMP............65 65 64 63 63 63 64 66 68 68 70 69
RH..............86 85 84 80 81 75 70 61 55 51 47 46
APARNT TMP (F)..65 65 64 63 63 63 64 66 68 68 70 69
20 FT WIND DIR..NNE NNE NNE NNE NNE NE NE NE NE NE NE NE
20 FT WIND SPD..30 31 31 30 28 28 26 24 23 24 23 23
20 FT WIND GUST.32 35 33 33 31 30 29 29 28 26 25 25
SFC WND DIR.....NNE NNE NNE NNE NNE NE NE NE NE NE NE NE
SFC WND SPD KTS.26 27 27 26 24 24 23 21 20 21 20 20
SFC WND GST.....32 35 33 33 31 30 29 29 28 26 25 25
TRANSP WIND DIR.NNE NNE NNE NNE NNE NE NE NE NE NE NE NE
TRANSP WIND SPD.31 32 31 30 29 28 28 28 26 25 23 23
TRANS WIND DIR..NNE NNE NNE NNE NNE NE NE NE NE NE NE NE
TRANS SPD (M/S).14 14 14 13 13 13 13 13 12 11 10 10
WAVE PERIOD (S).2 2 2 2 2 2 2 2 2 2 2 2
WAVE HEIGHT (FT)1 1 1 1 1 1 1 1 1 1 1 1
CEILING (KFT)...2.2 1.8 1.8 1.5 1.3 1.8 3.5 25 10 25 25 25
FORECASTER...EFFERSON
REQUESTED BY...BRANDI TODD
TYPE OF REQUEST...HAZMAT
.TAG 2610500.5/LIX
.DELDT 04/18/26
.FORMATTERVERSION 2.0.0
.EMAIL PETER.LEBEL@NOAA.GOV,ELYONS@AMPOL.NET,SR-LIX.FORECASTERS@NOAA.GOV,RLOZADA@RESPONSEGROUP.COM,NWCOPELAND@LOOPLLC.COM,VCARREIRO@RESPONSEGROUPINC.COM,BRANDI.TODD@NOAA.GOV,RCDAUTERIVE@LOOPLLC.COM,DEMASKEY@CLEANGULFASSOC.COM,TCSHAW@LOOPLLC.COM,APARDO@RESPONSEGROUPINC.COM,JSILVA@RESPONSEGROUPINC.COM
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