TCMEP2
TROPICAL STORM GENEVIEVE FORECAST/ADVISORY NUMBER 37
NWS NATIONAL HURRICANE CENTER MIAMI FL EP072026
0900 UTC SUN AUG 02 2026
TROPICAL STORM CENTER LOCATED NEAR 23.9N 137.3W AT 02/0900Z
POSITION ACCURATE WITHIN 30 NM
PRESENT MOVEMENT TOWARD THE WEST-NORTHWEST OR 290 DEGREES AT 11 KT
ESTIMATED MINIMUM CENTRAL PRESSURE 1003 MB
MAX SUSTAINED WINDS 45 KT WITH GUSTS TO 55 KT.
34 KT....... 70NE 40SE 40SW 70NW.
4 M SEAS....120NE 60SE 75SW 120NW.
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 23.9N 137.3W AT 02/0900Z
AT 02/0600Z CENTER WAS LOCATED NEAR 23.7N 136.7W
FORECAST VALID 02/1800Z 24.5N 139.0W
MAX WIND 40 KT...GUSTS 50 KT.
34 KT... 60NE 30SE 30SW 60NW.
FORECAST VALID 03/0600Z 25.4N 141.2W...POST-TROPICAL
MAX WIND 35 KT...GUSTS 45 KT.
34 KT... 40NE 0SE 0SW 40NW.
FORECAST VALID 03/1800Z 26.1N 143.1W...POST-TROPICAL
MAX WIND 35 KT...GUSTS 45 KT.
34 KT... 40NE 0SE 0SW 40NW.
FORECAST VALID 04/0600Z 26.7N 144.5W...POST-TROP/REMNT LOW
MAX WIND 30 KT...GUSTS 40 KT.
FORECAST VALID 04/1800Z 27.3N 145.2W...POST-TROP/REMNT LOW
MAX WIND 25 KT...GUSTS 35 KT.
FORECAST VALID 05/0600Z 28.0N 145.8W...POST-TROP/REMNT LOW
MAX WIND 25 KT...GUSTS 35 KT.
EXTENDED OUTLOOK. NOTE...ERRORS FOR TRACK HAVE AVERAGED NEAR 100 NM
ON DAY 4 AND 125 NM ON DAY 5...AND FOR INTENSITY NEAR 15 KT EACH DAY
OUTLOOK VALID 06/0600Z...DISSIPATED
REQUEST FOR 3 HOURLY SHIP REPORTS WITHIN 300 MILES OF 23.9N 137.3W
NEXT ADVISORY AT 02/1500Z
$$
FORECASTER BLAKE=
HSFEPI
HIGH SEAS FORECAST FOR METAREA XII
NWS OCEAN PREDICTION CENTER WASHINGTON DC
0545 UTC SUN AUG 02 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 02.
24 HOUR FORECAST VALID 0000 UTC AUG 03.
48 HOUR FORECAST VALID 0000 UTC AUG 04.
.WARNINGS.
...GALE WARNING...
.FROM 31N TO 43N BETWEEN 121W AND 129W AREA OF NW TO N WINDS 25
TO 35 KT. SEAS 2.5 TO 4 M.
.24 HOUR FORECAST FROM 30N TO 45N BETWEEN 121W AND 130W AREA OF
NW TO N WINDS 25 TO 35 KT. SEAS 2.5 TO 4.5 M. ALSO FROM 45N TO
50N E OF 130W AREA OF NW TO N WINDS TO 25 KT. SEAS TO 2.5 M.
.48 HOUR FORECAST FROM 35N TO 50N BETWEEN 124W AND 132W AREA OF
NW TO N WINDS 25 TO 35 KT. SEAS 2.5 TO 4 M.
...GALE WARNING...
.COMPLEX LOW WITH MEAN CENTER W OF AREA NEAR 55N168E 998 MB
MOVING NE 20 KT. FROM 50N TO 59N W OF 175W WINDS 25 TO 35 KT.
SEAS 2.5 TO 4 M.
.24 HOUR FORECAST COMPLEX LOW WITH MEAN CENTER NEAR 59N180W 995
MB. W AND NW OF A LINE FROM 45N180W TO 57N160W TO 64N161W WINDS
25 TO 35 KT. SEAS 2.5 TO 5 M.
.48 HOUR FORECAST COMBINED LOW NEAR 63N172W 990 MB. NW OF A LINE
FROM 59N149W TO 52N169W WINDS 25 TO 35 KT. SEAS 2.5 TO 4.5 M.
.SYNOPSIS AND FORECAST.
.LOW 50N129W 1017 MB MOVING E 15 KT. WITHIN 360 NM SW SEMICIRCLE
WINDS LESS THAN 25 KT. SEAS TO 3 M.
.24 HOUR FORECAST LOW DISSIPATED INLAND AND ASSOCIATED
CONDITIONS DESCRIBED IN FIRST GALE WARNING ABOVE IN WARNINGS
SECTION.
.FROM 30N TO 35N W OF 170W AREA OF E WINDS TO 25 KT. SEAS TO 3
M.
.24 HOUR FORECAST FROM 30N TO 36N W OF 174W AREA OF E WINDS TO
25 KT. SEAS TO 3 M.
.48 HOUR FORECAST FROM 33N TO 40N BETWEEN 160W AND 177W AREA OF
NE WINDS TO 25 KT. SEAS TO 2.5 M.
.LOW 53N156W 1013 MB MOVING SE 20 KT. FROM 41N TO 56N BETWEEN
144W AND 168W WINDS TO 25 KT. SEAS TO 2.5 M.
.24 HOUR FORECAST LOW 48N148W 1018 MB. FROM 40N TO 53N BETWEEN
142W AND 162W WINDS 20 TO 30 KT. SEAS TO 3 M.
.48 HOUR FORECAST LOW 43N149W 1018 MB. FROM 41N TO 51N BETWEEN
143W AND 149W WINDS LESS THAN 25 KT. SEAS TO 2.5 M.
.48 HOUR FORECAST POST-TROPICAL CYCLONE GENEVIEVE S OF AREA NEAR
26.9N 144.0W 1007 MB. FROM 30N TO 32N BETWEEN 141W AND 149W
WINDS TO 25 KT. SEAS TO 3 M.
.DENSE FOG. VSBY OCCASIONALLY LESS THAN 1 NM WITHIN 120 NM NE OF
A LINE FROM 51N150W TO 57N165W...N OF 56N BETWEEN 171W AND
177W...AND W OF A LINE FROM 44N170W TO 59N177W.
.24 HOUR FORECAST DENSE FOG WITHIN 600 NM W OF A LINE FROM
45N168W TO 60N163W TO 65N168W.
.48 HOUR FORECAST DENSE FOG FROM 52N TO 57N BETWEEN 143W AND
150W...AND WITHIN 360 NM N OF A LINE FROM 41N180W TO 49N160W.
.FORECASTER KELLS. OCEAN PREDICTION CENTER.
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 SUN AUG 2.
24 HOUR FORECAST VALID 0000 UTC MON AUG 3.
48 HOUR FORECAST VALID 0000 UTC TUE AUG 4.
.WARNINGS.
...TROPICAL STORM WARNING...
.TROPICAL STORM GENEVIEVE NEAR 23.5N 136.0W 1004 MB AT 0300 UTC
AUG 02 MOVING WNW OR 290 DEG AT 12 KT. MAXIMUM SUSTAINED WINDS
40 KT GUSTS 50 KT. TROPICAL STORM FORCE WINDS WITHIN 120 NM N
SEMICIRCLE AND 40 NM S SEMICIRCLE. SEAS 4 M OR GREATER WITHIN
120 NM N SEMICIRCLE...60 NM SE QUADRANT AND 90 NM SW QUADRANT
WITH SEAS TO 5.0 M. ELSEWHERE WITHIN 26N134W TO 29N136W TO
28N140W TO 24N139W TO 23N136W TO 26N134W WINDS 20 TO 33 KT. SEAS
3.0 TO 4.0 M. REMAINDER AREA WITHIN 30N134W TO 28N136W TO 30N140W
TO 20N140W TO 19N137W TO 24N133W TO 30N134W WINDS 20 KT OR LESS.
SEAS 2.5 TO 3.0 M IN MIXED SWELL.
.24 HOUR FORECAST POST-TROPICAL GENEVIEVE NEAR 25.2N 140.4W.
MAXIMUM SUSTAINED WINDS 35 KT GUSTS 45 KT. TROPICAL STORM FORCE
WINDS WITHIN 60 NM N SEMICIRCLE AND 0 NM S SEMICIRCLE. SEAS 4 M
OR GREATER WITHIN 120 NM N SEMICIRCLE...30 NM SE QUADRANT AND 60
NM SW QUADRANT WITH SEAS TO 5.0 M. ELSEWHERE OVER FORECAST WATERS
WITHIN 29N139W TO 30N140W TO 25N140W TO 25N139W TO 27N139W TO
29N139W WINDS 20 TO 30 KT. SEAS 2.5 TO 4.0 M. REMAINDER FORECAST
WATERS WITHIN 27N137W TO 30N138W TO 30N140W TO 28N139W TO 25N140W
TO 23N140W TO 27N137W WINDS 20 KT OR LESS. SEAS 2.5 TO 3.5 M IN
MIXED SWELL.
.36 HOUR FORECAST POST-TROPICAL REMNANT LOW GENEVIEVE NEAR 26.1N
142.5W. MAXIMUM SUSTAINED WINDS 30 KT GUSTS 40 KT.
.48 HOUR FORECAST POST-TROPICAL REMNANT LOW GENEVIEVE NEAR 26.9N
144.0W. MAXIMUM SUSTAINED WINDS 30 KT GUSTS 40 KT. OVER FORECAST
WATERS CONDITIONS IMPROVE. WINDS 20 KT OR LESS. SEAS LESS THAN
2.5 M.
FORECAST WINDS IN AND NEAR ACTIVE TROPICAL CYCLONES SHOULD BE
USED WITH CAUTION DUE TO UNCERTAINTY IN FORECAST TRACK...SIZE
AND INTENSITY.
.SYNOPSIS AND FORECAST.
.WITHIN 12N87W TO 11N89W TO 09N89W TO 09N88W TO 10N85W TO
12N87W...INCLUDING THE GULF OF PAPAGAYO... E WINDS 20 TO 25 KT.
SEAS LESS THAN 2.5 M.
.18 HOUR FORECAST CONDITIONS IMPROVE. WINDS 20 KT OR LESS. SEAS
LESS THAN 2.5 M.
.18 HOUR FORECAST WITHIN 30N122W TO 30N126W TO 29N125W TO
29N124W TO 29.5N122.5W TO 30N122W WINDS 20 KT OR LESS. SEAS 2.5
TO 3.0 M IN N SWELL.
.24 HOUR FORECAST WITHIN 30N122.5W TO 30N125W TO 29.5N124.5W TO
29.5N123W TO 30N122.5W WINDS 20 KT OR LESS. SEAS 2.5 TO 3.0 M IN
N SWELL.
.48 HOUR FORECAST WITHIN 30N121W TO 30N129W TO 28N126W TO
29N123W TO 30N121W WINDS 20 KT OR LESS. SEAS 2.5 TO 3.0 M IN N
SWELL.
.REMAINDER OF AREA WINDS 20 KT OR LESS. SEAS LESS THAN 2.5 M.
CONVECTION VALID AT 0230 UTC SUN AUG 2...
TROPICAL STORM GENEVIEVE...SCATTERED MODERATE ISOLATED STRONG
WITHIN 60 NM NE SEMICIRCLE.
.INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...
MONSOON TROUGH FROM 09N78W TO 09N106W TO 12N121W TO 10N127W. ITCZ
FROM 10N127W TO 07N135W TO 08N140W. SCATTERED MODERATE ISOLATED
STRONG FROM 03N TO 11N BETWEEN 80W AND 124W.
$$
.FORECASTER AL. NATIONAL HURRICANE CENTER.
NATIONAL WEATHER SERVICE HONOLULU HI
NORTH PACIFIC EQUATOR TO 30N BETWEEN 140W AND 180W
SYNOPSIS VALID 0000 UTC AUG 02 2026.
24 HOUR FORECAST VALID 0000 UTC AUG 03 2026.
48 HOUR FORECAST VALID 0000 UTC AUG 04 2026.
.WARNINGS.
...GALE WARNING...
.24 HOUR FORECAST POST-TROPICAL LOW OF GENEVIEVE 1006 MB NEAR
25.2N
140.4W. WINDS 25 TO 35 KT WITHIN 60 NM N SEMICIRCLE OF LOW. WINDS
20 TO 25 KT REMAINDER OF AREA N OF 24N E OF 143W. SEAS 4 TO 5.5 M
FROM 25N TO 27N E OF 141W. SEAS 2.5 TO 4 M REMAINDER OF AREA N
OF 22N E OF 144W.
.36 HOUR FORECAST REMNANT LOW OF GENEVIEVE 1007 MB NEAR 26.1N
142.5W. WINDS OF 20 TO 30 KT N OF 24N E OF 146W. SEAS OF 3.5 TO 4
M FROM 26N TO 27N BETWEEN 142W AND 143W. SEAS OF 2.5 TO 3.5 M
REMAINDER OF AREA N OF 23N AND E OF 146W.
.48 HOUR FORECAST REMNANT LOW GENEVIEVE 1007 MB NEAR 26.9N
144.0W. WINDS 20 TO 30 KT N OF 26N E OF 146W. SEAS 2 TO 3.5 M N OF
25N BETWEEN 141W AND 148W.
.SYNOPSIS AND FORECAST
.TROUGH 26N178W TO 30N176W MOVING WNW 10 KT. WINDS EASED BELOW 20
KT. SEAS 2.5 TO 3 M N OF 29N W OF 171W. SCATTERED MODERATE TSTMS
N OF 26N W OF 171W.
.24 HOUR FORECAST TROUGH MOVED W OF AREA. WINDS BELOW 20 KT AND
SEAS LESS THAN 2.5 M.
.LOW NEAR 08N162W 1009 MB...TROUGH 03N164W TO LOW TO 12N159W. BOTH
MOVING W SLOWLY. SCATTERED MODERATE TO ISOLATED STRONG TSTMS FROM
06N TO 11N BETWEEN 155W AND 163W.
.24 HOUR FORECAST LOW 08N167W 1010 MB. TROUGH 04N172W TO LOW TO
10N162W.
.48 HOUR FORECAST LOW 08N168W 1010 MB. TROUGH 04N172W TO LOW TO
12N167W.
.TROUGH 07N148W TO 12N144W TO 16N140E MOVING W SLOWLY. WINDS 20
TO 25 KT AND SEAS OF 2.5 TO 3 M FROM 13N TO 16N E OF 144W.
SCATTERED MODERATE TSTMS FROM 12N TO 16N E OF 146W.
.24 HOUR FORECAST TROUGH 05N152W TO 11N147W TO 17N172W. WINDS
EASED BELOW 20 KT AND SEAS BECOME LESS THAN 2.5 M.
.48 HOUR FORECAST TROUGH 07N155W TO 11N152W TO 17N148E. WINDS
BELOW 20 KT AND SEAS LESS THAN 2.5 M.
.WINDS 20 TO 25 KT UP TO 350 NM OF A LINE FROM 19N167W TO 22N154W
24N142W.
.24 HOUR FORECAST WINDS 20 TO 25 KT FROM 20N TO 26N BETWEEN 158W
AND 173W.
.48 HOUR FORECAST WINDS 20 TO 25 KT FROM 20N TO 27N W OF 171W.
.WINDS 20 KT OR LESS OVER REMAINDER OF FORECAST AREA.
.SEAS 2.5 TO 3 M WITHIN 420 NM OF A LINE FROM 18N167W TO 21N153W
24N143W.
.24 HOUR FORECAST SEAS 2.5 TO 3 M WITHIN 420 NM OF A LINE FROM
17N170W TO 21N157W TO 23N148W.
.48 HOUR FORECAST SEAS 2.5 TO 3 M WITHIN 250 NM OF A LINE FROM
13N163W TO 21N173W TO 26N180W.
.SEAS 2.5 M OR LOWER OVER REMAINDER OF FORECAST AREA.
.SCATTERED MODERATE TO ISOLATED STRONG TSTMS W OF A LINE FROM
06N173W TO 15N178W...AND FROM 00N TO 04N BETWEEN 149W AND 159W.
.SCATTERED MODERATE TSTMS FROM 21N TO 24N W OF 175W.
$$
.FORECASTER CHAN. HONOLULU HI.=