TCMCP2
TROPICAL STORM LALA FORECAST/ADVISORY NUMBER 20
NWS CENTRAL PACIFIC HURRICANE CENTER HONOLULU HI CP012026
ISSUED BY NWS NATIONAL HURRICANE CENTER MIAMI FL
0900 UTC MON AUG 17 2026
TROPICAL STORM CENTER LOCATED NEAR 20.7N 162.6W AT 17/0900Z
POSITION ACCURATE WITHIN 30 NM
PRESENT MOVEMENT TOWARD THE WEST OR 270 DEGREES AT 11 KT
ESTIMATED MINIMUM CENTRAL PRESSURE 997 MB
MAX SUSTAINED WINDS 50 KT WITH GUSTS TO 60 KT.
50 KT....... 40NE 0SE 0SW 40NW.
34 KT....... 80NE 50SE 50SW 90NW.
4 M SEAS....210NE 90SE 120SW 150NW.
WINDS AND SEAS VARY GREATLY IN EACH QUADRANT. RADII IN NAUTICAL
MILES ARE THE LARGEST RADII EXPECTED ANYWHERE IN THAT QUADRANT.
REPEAT...CENTER LOCATED NEAR 20.7N 162.6W AT 17/0900Z
AT 17/0600Z CENTER WAS LOCATED NEAR 20.7N 162.0W
FORECAST VALID 17/1800Z 20.6N 164.0W
MAX WIND 50 KT...GUSTS 60 KT.
50 KT... 40NE 0SE 0SW 40NW.
34 KT...100NE 50SE 50SW 80NW.
FORECAST VALID 18/0600Z 20.5N 165.9W
MAX WIND 55 KT...GUSTS 65 KT.
50 KT... 40NE 0SE 0SW 40NW.
34 KT...100NE 60SE 50SW 80NW.
FORECAST VALID 18/1800Z 20.6N 167.7W
MAX WIND 60 KT...GUSTS 75 KT.
50 KT... 50NE 20SE 0SW 40NW.
34 KT...100NE 70SE 50SW 90NW.
FORECAST VALID 19/0600Z 20.9N 169.2W
MAX WIND 70 KT...GUSTS 85 KT.
64 KT... 25NE 0SE 0SW 25NW.
50 KT... 50NE 30SE 20SW 50NW.
34 KT...110NE 80SE 50SW 90NW.
FORECAST VALID 19/1800Z 21.7N 170.7W
MAX WIND 75 KT...GUSTS 90 KT.
64 KT... 30NE 0SE 0SW 25NW.
50 KT... 60NE 30SE 20SW 50NW.
34 KT...110NE 80SE 60SW 90NW.
FORECAST VALID 20/0600Z 22.6N 171.9W
MAX WIND 75 KT...GUSTS 90 KT.
64 KT... 30NE 20SE 0SW 25NW.
50 KT... 60NE 40SE 30SW 50NW.
34 KT...110NE 80SE 60SW 90NW.
EXTENDED OUTLOOK. NOTE...ERRORS FOR TRACK HAVE AVERAGED NEAR 150 NM
ON DAY 4 AND 200 NM ON DAY 5...AND FOR INTENSITY NEAR 20 KT EACH DAY
OUTLOOK VALID 21/0600Z 24.5N 172.9W
MAX WIND 70 KT...GUSTS 85 KT.
50 KT... 50NE 40SE 30SW 40NW.
34 KT...110NE 90SE 60SW 100NW.
OUTLOOK VALID 22/0600Z 26.9N 172.2W
MAX WIND 70 KT...GUSTS 85 KT.
50 KT... 60NE 40SE 30SW 40NW.
34 KT...130NE 110SE 70SW 100NW.
REQUEST FOR 3 HOURLY SHIP REPORTS WITHIN 300 MILES OF 20.7N 162.6W
NEXT ADVISORY AT 17/1500Z
$$
FORECASTER GIBBS/EVANS
HSFEPI
HIGH SEAS FORECAST FOR METAREA XII
NWS OCEAN PREDICTION CENTER WASHINGTON DC
0545 UTC MON AUG 17 2026
CCODE/1:31:12:01:00/AOW+POR/NWS/CCODE
SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS
SEAS GIVEN AS SIGNIFICANT WAVE HEIGHT...WHICH IS THE AVERAGE
HEIGHT OF THE HIGHEST 1/3 OF THE WAVES. INDIVIDUAL WAVES MAY BE
MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
ONLY YOU KNOW THE WEATHER AT YOUR POSITION. REPORT IT TO THE
NATIONAL WEATHER SERVICE. EMAIL US AT
VOSOPS@NOAA.GOV(LOWERCASE).
FOR ANY TROPICAL CYCLONE INFORMATION BEYOND 48 HOURS REFERENCE
THE ASSOCIATED NWS TROPICAL CYCLONE FORECAST/ADVISORY (TCM).
SECURITE
PACIFIC S OF 67N AND N OF 30N E OF A LINE FROM THE BERING STRAIT
TO 53N172E TO 50N180W TO 30N180W
ALL FORECASTS VALID OVER ICE FREE FORECAST WATERS
SYNOPSIS VALID 0000 UTC AUG 17.
24 HOUR FORECAST VALID 0000 UTC AUG 18.
48 HOUR FORECAST VALID 0000 UTC AUG 19.
.WARNINGS.
...GALE WARNING...
.LOW 58N163W 991 MB MOVING N 20 KT. FROM 50N TO 62N BETWEEN 172W
AND 142W WINDS 25 TO 35 KT. SEAS 2.5 TO 4.5 M.
.24 HOUR FORECAST LOW WELL INLAND. N OF 53N BETWEEN 174W AND 145W
WINDS 20 TO 30 KT. SEAS TO 4 M.
.48 HOUR FORECAST CONDITIONS DIMINISHED.
.SYNOPSIS AND FORECAST.
.LOW 40N172W 1012 MB MOVING NE 20 KT. FROM 34N TO 44N BETWEEN
174W AND 166W WINDS 20 TO 30 KT. SEAS 2.5 TO 4 M.
.24 HOUR FORECAST LOW 50N160W 1014 MB. FROM 44N TO 51N BETWEEN
163W AND 151W WINDS 20 TO 30 KT. SEAS TO 3.5 M.
.48 HOUR FORECAST LOW 57N145W 1015 MB. WITHIN 240 NM SE OF A LINE
FROM 44N163W TO 55N145W WINDS TO 25 KT. SEAS LESS THAN 2.5 M.
.FROM 38N TO 44N BETWEEN 123W AND 128W WINDS TO 25 KT. SEAS LESS
THAN 2.5 M.
.24 HOUR FORECAST FROM 30N TO 51N BETWEEN 115W AND 132W WINDS TO
25 KT. SEAS TO 2.5 M.
.48 HOUR FORECAST FROM 30N TO 44N BETWEEN 116W AND 129W WINDS 20
TO 30 KT. SEAS TO 3 M.
.DENSE FOG. VSBY OCCASIONALLY LESS THAN 1 NM N OF A LINE FROM
55N144W TO 56N178W.
.24 HOUR FORECAST DENSE FOG FROM 47N TO 52N BETWEEN 149W AND
161W.
.48 HOUR FORECAST DENSE FOG FROM 51N TO 56N BETWEEN 147W AND
141W.
.FORECASTER BYRD. OCEAN PREDICTION CENTER.
NWS NATIONAL HURRICANE CENTER MIAMI FL
E PACIFIC FROM THE EQUATOR TO 30N E OF 140W AND 03.4S TO THE
EQUATOR E OF 120W
SYNOPSIS VALID 0000 UTC MON AUG 17.
24 HOUR FORECAST VALID 0000 UTC TUE AUG 18.
48 HOUR FORECAST VALID 0000 UTC WED AUG 19.
.WARNINGS.
.NONE.
.SYNOPSIS AND FORECAST.
.WITHIN 29N114W TO 30N116W TO 29N116W TO 27N116W TO 26N115W TO
29N114W...INCLUDING SEBASTIAN VIZCAINO BAY AND WITHIN 60 NM OF
SHORE...NW WINDS 20 TO 25 KT. SEAS LESS THAN 2.5 M.
.24 HOUR FORECAST LITTLE CHANGE.
.33 HOUR FORECAST CONDITIONS IMPROVE. WINDS 20 KT OR LESS. SEAS
LESS THAN 2.5 M.
.REMNANTS OF HERNAN W OF AREA. OVER FORECAST WATERS WITHIN
19N139W TO 21N140W TO 15N140W TO 16N139W TO 19N139W WINDS 20 KT
OR LESS. SEAS 2.5 TO 3.0 M IN NE SWELL.
.06 HOUR FORECAST OVER FORECAST WATERS CONDITIONS IMPROVE. WINDS
20 KT OR LESS. SEAS LESS THAN 2.5 M.
.WITHIN 16N94W TO 16N95W TO 16N96W TO 15N96W TO 15N95W TO 15N94W
TO 16N94W...INCLUDING THE GULF OF TEHUANTEPEC...N TO NE WINDS 20
TO 30 KT. SEAS BUILDING TO 2.5 TO 3.0 M.
.24 HOUR FORECAST LITTLE CHANGE.
.48 HOUR FORECAST LITTLE CHANGE.
.WITHIN 12N87W TO 11N88W TO 10N88W TO 10N87W TO 11N87W TO 12N87W
...INCLUDING THE GULF OF PAPAGAYO...E WINDS 20 TO 25 KT. SEAS
LESS THAN 2.5 M. WITHIN 10N91W TO 11N92W TO 10N93W TO 09N94W TO
09N93W TO 09N91W TO 10N91W WINDS 20 KT OR LESS. SEAS 2.5 TO 3.0 M
IN MIXED NE TO E AND SW SWELL.
.12 HOUR FORECAST CONDITIONS IMPROVE. WINDS 20 KT OR LESS. SEAS
LESS THAN 2.5 M IN SW SWELL.
.24 HOUR FORECAST LITTLE CHANGE.
.33 HOUR FORECAST WITHIN 11N86W TO 11N87W TO 11N88W TO 10N88W TO
10N86W TO 11N86W...INCLUDING THE GULF OF PAPAGAYO...NE TO E
WINDS 20 TO 25 KT. SEAS LESS THAN 2.5 M.
.48 HOUR FORECAST WITHIN 11N86W TO 12N87W TO 11N88W TO 10N88W TO
10N87W TO 11N86W...INCLUDING THE GULF OF PAPAGAYO...NE TO E
WINDS 20 TO 25 KT. SEAS LESS THAN 2.5 M.
.WITHIN 01S112W TO 02N116W TO 00N128W TO 02S120W TO 03.4S120W TO
03.4S93W TO 01S112W WINDS 20 KT OR LESS. SEAS 2.5 TO 3.0 M IN
MIXED SE AND SW SWELL.
.24 HOUR FORECAST WITHIN 02N100W TO 02N108W TO 00N112W TO
00N128W TO 03.4S120W TO 03.4S90W TO 02N100W WINDS 20 KT OR LESS.
SEAS 2.5 TO 3.0 M IN MIXED SE AND SW SWELL.
.48 HOUR FORECAST WITHIN 01N98W TO 05N100W TO 02N111W TO 00N133W
TO 03.4S120W TO 03.4S83W TO 01N98W...EXCEPT LEE OF GALAPAGOS
ISLANDS...WINDS 20 KT OR LESS. SEAS 2.5 TO 3.0 M IN MIXED SE AND
SW SWELL.
.18 HOUR FORECAST TROPICAL WAVE NEAR 126W. WITHIN 14N124W TO
14N129W TO 12N129W TO 10N128W TO 09N123W TO 10N123W TO 14N124W
WINDS 20 KT OR LESS. SEAS 2.5 TO 3.0 M IN MIXED SWELL.
.24 HOUR FORECAST LITTLE CHANGE.
.42 HOUR FORECAST TROPICAL WAVE NEAR 134W. CONDITIONS IMPROVE.
WINDS 20 KT OR LESS. SEAS LESS THAN 2.5 M.
.27 HOUR FORECAST WITHIN 25N108W TO 26N109W TO 24N109W TO
23N108W TO 25N108W...INCLUDING THE GULF OF CALIFORNIA...E TO SE
WINDS 20 TO 30 KT. SEAS LESS THAN 2.5 M. SCATTERED TO NUMEROUS
TSTMS.
.36 HOUR FORECAST CONDITIONS IMPROVE. WINDS 20 KT OR LESS. SEAS
LESS THAN 2.5 M.
.REMAINDER OF AREA WINDS 20 KT OR LESS. SEAS LESS THAN 2.5 M.
CONVECTION VALID AT 0250 UTC MON AUG 17...
.INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...
MONSOON TROUGH FROM LOW PRES NEAR 11N74W TO 10N86W TO 07N97W TO
08N102W. ITCZ FROM 08N102W TO 08.5N121W THEN RESUMES FROM
09N123W TO 05N140W. SCATTERED TO NUMEROUS MODERATE AND ISOLATED
STRONG FROM 02N TO 14.5N BETWEEN 77W AND 108W...FROM 06N TO 11N
BETWEEN 108W AND 130W...AND FROM 01N TO 06N BETWEEN 138W AND
140W.
.FORECASTER LEWITSKY. NATIONAL HURRICANE CENTER.
NATIONAL WEATHER SERVICE HONOLULU HI
NORTH PACIFIC EQUATOR TO 30N BETWEEN 140W AND 180W
SYNOPSIS VALID 0000 UTC AUG 17 2026.
24 HOUR FORECAST VALID 0000 UTC AUG 18 2026.
48 HOUR FORECAST VALID 0000 UTC AUG 19 2026.
.WARNINGS.
...TROPICAL STORM WARNING...
.TROPICAL STORM LALA NEAR 20.7N 161.6W 994 MB AT 0300 UTC AUG 17
MOVING W OR 265 DEG AT 14 KT. MAXIMUM SUSTAINED WINDS 55 KT
GUSTS 65 KT. TROPICAL STORM FORCE WINDS WITHIN 50 NM S
SEMICIRCLE...120 NM NE QUADRANT AND 90 NM NW QUADRANT. SEAS 4 M
OR GREATER WITHIN 120 NM S SEMICIRCLE...210 NM NE QUADRANT AND
240 NM NW QUADRANT WITH SEAS TO 6 M. WINDS 20 TO 30 KT AND SEAS
2.5 TO 4 M ELSEWHERE FROM 15N TO 25N BETWEEN 165W AND 155W.
ISOLATED MODERATE TSTMS WITHIN 300 NM OF CENTER.
.24 HOUR FORECAST TROPICAL STORM LALA NEAR 20.6N 165.3W. MAXIMUM
SUSTAINED WINDS 50 KT GUSTS 60 KT. TROPICAL STORM FORCE WINDS
WITHIN 50 NM S SEMICIRCLE...100 NM NE QUADRANT AND 80 NM NW
QUADRANT. SEAS 4 M OR GREATER WITHIN 120 NM OF CENTER WITH
SEAS TO 5 M. WINDS 20 TO 30 KT AND SEAS 2.5 TO 4 M ELSEWHERE
FROM 17N TO 27N BETWEEN 170W AND 160W.
.48 HOUR FORECAST TROPICAL STORM LALA NEAR 20.7N 168.9W. MAXIMUM
SUSTAINED WINDS 60 KT GUSTS 75 KT. TROPICAL STORM FORCE WINDS
WITHIN 100 NM NE QUADRANT...70 NM SE QUADRANT...50 NM SW
QUADRANT...AND 90 NM NW QUADRANT. SEAS 4 M OR GREATER WITHIN
180 NM OF CENTER WITH SEAS TO 5.5 M. WINDS 20 TO 30 KT AND SEAS
2.5 TO 4 M ELSEWHERE FROM 18N TO 27N BETWEEN 175W AND 165W.
FORECAST WINDS IN AND NEAR ACTIVE TROPICAL CYCLONES SHOULD BE
USED WITH CAUTION DUE TO UNCERTAINTY IN FORECAST TRACK...SIZE
AND INTENSITY.
SEE THE LATEST BULLETIN ISSUED BY NHC UNDER WMO HEADER WTPA22
PHFO.
.SYNOPSIS AND FORECAST
.LOW 17N140W 1006 MB MOVING W 10 KT. TROUGH FROM LOW TO 05N140W.
.24 HOUR FORECAST LOW 17N143W 1007 MB. TROUGH FROM LOW TO
10N143W.
.48 HOUR FORECAST LOW 18N146W 1011 MB. TROUGH FROM LOW TO
10N150W.
.WINDS 20 KT OR LESS OVER THE REMAINDER OF FORECAST AREA.
.SEAS 2.5 M OR LESS OVER THE REMAINDER OF FORECAST AREA.
.MONSOON TROUGH 05N180W 05N175W 12N164W 07N153W. SCATTERED
MODERATE
TSTMS WITHIN 120 NM OF TROUGH.
.ITCZ 00Z158W 00Z145W 02N140W ISOLATED MODERATE TSTMS WITHIN
150 NM OF ITCZ.
.ISOLATED MODERATE TSTMS WITHIN 90 NM OF POINT 10N151W...AND N OF
28N W OF 178W. SCATTERED MODERATE TSTMS S OF 03S E OF 158W.
$$
.FORECASTER PECHACEK. HONOLULU HI.=