663
FZPN27 KNHC 231622
OFFPZ7

Offshore Waters Forecast
NWS National Hurricane Center Miami, FL
922 AM PDT Mon Sep 23 2024

Offshore Waters Forecast for the E Pacific within 250 nm of
Mexico

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.

PMZ001-240430-
Synopsis for the E Pacific within 250 nm of Mexico
922 AM PDT Mon Sep 23 2024

.SYNOPSIS...
Tropical Storm John is centered near 14.8N 98.5W at 23/1500 UTC,
moving north at 3 kt. Rapid strengthening is forecast, and John
is expected to become a hurricane by this afternoon, with
additional strengthening expected before the center reaches the
coast of southern Mexico. John will move to near 15.2N 98.3W this
evening, move to 15.7N 97.9W Tue morning, inland to 16.0N 97.6W
Tue evening, move inland and weaken to a tropical storm near
16.2N 97.4W Wed morning, and dissipate Wed evening. Through
Thursday, John is expected to produce 6 to 12 inches of rain with
isolated totals around 15 inches across the coastal areas of
Chiapas. In areas along and near the Oaxaca coast to southeast
Guerrero, between 10 and 20 inches of rain with isolated totals
near 30 inches can be expected through Thursday. This heavy
rainfall will likely cause significant and possibly catastrophic,
life-threatening flash flooding and mudslides to the Mexican
States of Chiapas, Oaxaca, and southeast Guerrero, particularly
in areas near the coast. A dangerous storm surge is expected to
produce significant coastal flooding near and to the east of
where the center makes landfall. Near the coast, the surge will
be accompanied by large and destructive waves.

Elsewhere away from Tropical Storm John, high pressure will
remain in place through mid-week. Gentle to moderate northwest
winds will continue over the Baja California offshore waters
through Wed night, with moderate to fresh winds occurring Thu
into the weekend. Light to gentle winds will continue over the
Gulf of California through the period, with occasional instances
of gentle to moderate winds in the central section. Looking
ahead, a trough of low pressure located several hundred miles
west-southwest of southwestern Mexico is producing limited shower
and thunderstorm activity. Environmental conditions only appear
marginally favorable for gradual development of this system while
it moves slowly eastward to the south of the coast of Mexico
through the middle of this week.

$$

PMZ009-240430-
Mexico Border S to 30N within 60 nm of shore-
922 AM PDT Mon Sep 23 2024

.TODAY...NW winds 10 to 15 kt in the afternoon. Seas 3 to 5 ft.
Period 14 seconds.
.TONIGHT...NW winds 10 to 15 kt. Seas 2 to 4 ft. Period
17 seconds.
.TUE...NW winds 10 to 15 kt. Seas 2 to 4 ft. Period 17 seconds.
.TUE NIGHT...NW winds 10 to 15 kt. Seas 2 to 4 ft. Period
17 seconds.
.WED...NW winds 15 to 20 kt N of 31N, and NW 10 to 15 kt S of
31N. Seas 3 to 5 ft. Period 16 seconds.
.WED NIGHT...NW winds 15 to 20 kt N of 31N, and NW 10 to 15 kt S
of 31N. Seas 3 to 5 ft. Period 15 seconds.
.THU...NW winds 10 to 15 kt. Seas 3 to 5 ft. Period 15 seconds.
.THU NIGHT...NW winds 10 to 15 kt. Seas 4 to 6 ft. Period
15 seconds.
.FRI...NW winds 10 to 15 kt. Seas 4 to 6 ft. Period 14 seconds.

$$

PMZ011-240430-
30N to Punta Eugenia within 250 nm of shore-
922 AM PDT Mon Sep 23 2024

.TODAY...NW winds 15 to 20 kt in the afternoon. Seas 4 to 6 ft.
Period 11 seconds.
.TONIGHT...NW winds 15 to 20 kt. Seas 3 to 5 ft. Period
11 seconds.
.TUE...W to NW winds 10 to 15 kt. Seas 3 to 5 ft. Period
10 seconds.
.TUE NIGHT...NW winds 15 to 20 kt. Seas 3 to 5 ft. Period
10 seconds.
.WED...NW winds 15 to 20 kt. Seas 3 to 5 ft. Period 11 seconds.
.WED NIGHT...NW winds 20 to 25 kt within 60 nm of the coast, and
NW 10 to 15 kt Elsewhere. Seas 3 to 5 ft. Period 15 seconds.
.THU...NW to N winds 15 to 20 kt. Seas 4 to 6 ft. Period
15 seconds.
.THU NIGHT...NW winds 15 to 20 kt. Seas 5 to 7 ft. Period
15 seconds.
.FRI...NW winds 15 to 20 kt. Seas 5 to 7 ft. Period 14 seconds.

$$

PMZ013-240430-
Punta Eugenia to Cabo San Lazaro within 250 nm offshore-
922 AM PDT Mon Sep 23 2024

.TODAY...NW winds 10 to 15 kt in the afternoon. Seas 4 to 6 ft.
Period 11 seconds.
.TONIGHT...NW winds 10 to 15 kt. Seas 4 to 6 ft. Period
11 seconds.
.TUE...NW winds 10 to 15 kt. Seas 3 to 5 ft. Period 11 seconds.
.TUE NIGHT...NW winds 10 to 15 kt. Seas 3 to 5 ft. Period
11 seconds.
.WED...NW to N winds 15 to 20 kt. Seas 4 to 6 ft. Period
10 seconds.
.WED NIGHT...NW winds 15 to 20 kt. Seas 4 to 6 ft. Period
10 seconds.
.THU...NW to N winds 15 to 20 kt. Seas 4 to 6 ft. Period
15 seconds.
.THU NIGHT...NW winds 15 to 20 kt. Seas 5 to 7 ft. Period
15 seconds.
.FRI...NW to N winds 15 to 20 kt. Seas 5 to 7 ft. Period
15 seconds.

$$

PMZ014-240430-
Cabo San Lazaro to Cabo San Lucas within 350 nm offshore N of
20N-
922 AM PDT Mon Sep 23 2024

.TODAY...NW winds 10 to 15 kt in the afternoon. Seas 3 to 5 ft.
Period 9 seconds.
.TONIGHT...NW winds 10 to 15 kt. Seas 3 to 5 ft. Period
9 seconds.
.TUE...NW winds 10 to 15 kt. Seas 3 to 5 ft. Period 12 seconds.
.TUE NIGHT...NW winds 15 to 20 kt. Seas 3 to 5 ft. Period
11 seconds.
.WED...NW winds 15 to 20 kt. Seas 4 to 6 ft. Period 11 seconds.
.WED NIGHT...NW winds 15 to 20 kt. Seas 4 to 6 ft. Period
8 seconds.
.THU...NW winds 10 to 15 kt. Seas 4 to 6 ft. Period 8 seconds.
.THU NIGHT...NW winds 15 to 20 kt. Seas 5 to 7 ft. Period
9 seconds.
.FRI...NW winds 15 to 20 kt. Seas 5 to 7 ft. Period 9 seconds.

$$

PMZ016-240430-
From 17N to 20N Between 110W and 115W including the
Revillagigedo Islands-
922 AM PDT Mon Sep 23 2024

.TODAY...NW winds 10 kt in the afternoon. Seas 3 to 5 ft. Period
9 seconds.
.TONIGHT...NW winds 10 to 15 kt. Seas 3 to 5 ft. Period
9 seconds.
.TUE...NW winds 10 to 15 kt. Seas 3 to 5 ft. Period 12 seconds.
.TUE NIGHT...NW winds 10 to 15 kt. Seas 3 to 5 ft. Period
12 seconds. Scattered showers and isolated tstms through the
night.
.WED...NW to N winds 10 to 15 kt. Seas 4 to 6 ft. Period
11 seconds.
.WED NIGHT...NW winds 10 to 15 kt. Seas 4 to 6 ft. Period
11 seconds.
.THU...NW winds 10 to 15 kt. Seas 4 to 6 ft. Period 8 seconds.
.THU NIGHT...NW winds 15 to 20 kt. Seas 4 to 6 ft. Period
8 seconds.
.FRI...NW winds 15 to 20 kt. Seas 5 to 7 ft. Period 10 seconds.

$$

PMZ017-240430-
Northern Gulf of California-
922 AM PDT Mon Sep 23 2024

.TODAY...NW winds 10 to 15 kt in the afternoon. Seas 3 ft or
less. Period 6 seconds.
.TONIGHT...W winds 10 kt. Seas 3 ft or less. Period 7 seconds.
.TUE...S winds 10 kt. Seas 3 ft or less. Period 9 seconds.
.TUE NIGHT...SW winds 10 kt. Seas 3 ft or less. Period
9 seconds.
.WED...S to SW winds 10 kt, shifting to NW in the afternoon.
Seas 3 ft or less. Period 9 seconds.
.WED NIGHT...SW to W winds 10 kt. Seas 3 ft or less. Period
9 seconds.
.THU...S to SW winds 10 kt, shifting to W to NW in the
afternoon. Seas 3 ft or less. Period 11 seconds.
.THU NIGHT...SW to W winds 10 to 15 kt. Seas 3 ft or less.
Period 13 seconds.
.FRI...W to NW winds 10 kt. Seas 3 ft or less. Period
12 seconds.

$$

PMZ019-240430-
Central Gulf of California-
922 AM PDT Mon Sep 23 2024

.TODAY...NW winds 10 kt in the afternoon. Seas 3 ft or less.
Period 6 seconds.
.TONIGHT...W to NW winds 10 kt. Seas 3 ft or less. Period
9 seconds.
.TUE...Variable winds less than 5 kt, becoming NW 10 kt in the
afternoon. Seas 3 ft or less. Period 9 seconds.
.TUE NIGHT...W to NW winds 10 kt. Seas 3 ft or less. Period
9 seconds.
.WED...NW winds 10 to 15 kt. Seas 3 ft or less. Period
10 seconds.
.WED NIGHT...W to NW winds 10 to 15 kt. Seas 3 ft or less.
Period 14 seconds.
.THU...NW winds 10 kt. Seas 3 ft or less. Period 14 seconds.
.THU NIGHT...W to NW winds 10 to 15 kt. Seas 3 ft or less.
Period 13 seconds.
.FRI...NW winds 10 to 15 kt. Seas 3 ft or less. Period
6 seconds.

$$

PMZ021-240430-
Southern Gulf of California-
922 AM PDT Mon Sep 23 2024

.TODAY...NW winds 10 to 15 kt in the afternoon. Seas 3 ft or
less. Period 8 seconds.
.TONIGHT...W winds 10 to 15 kt. Seas 3 ft or less. Period
9 seconds.
.TUE...NW winds 10 kt. Seas 3 ft or less. Period 12 seconds.
.TUE NIGHT...W to NW winds 10 to 15 kt. Seas 3 ft or less.
Period 16 seconds.
.WED...NW winds 10 kt. Seas 3 ft or less. Period 15 seconds.
.WED NIGHT...W to NW winds 10 kt. Seas 3 ft or less. Period
15 seconds.
.THU...W winds 10 kt. Seas 3 ft or less. Period 14 seconds.
.THU NIGHT...W to NW winds 10 kt. Seas 3 ft or less. Period
14 seconds.
.FRI...W to NW winds 10 kt. Seas 3 ft or less. Period
15 seconds.

$$

PMZ022-240430-
N of 20N E of 110W to the Entrance of the Gulf of California-
922 AM PDT Mon Sep 23 2024

.TODAY...W to NW winds 10 to 15 kt in the afternoon. Seas 3 to
5 ft. Period 9 seconds.
.TONIGHT...W to NW winds 10 to 15 kt. Seas 3 to 5 ft. Period
9 seconds.
.TUE...W to NW winds 10 to 15 kt. Seas 3 to 5 ft. Period
17 seconds.
.TUE NIGHT...W to NW winds 15 to 20 kt. Seas 3 to 5 ft. Period
16 seconds. Scattered showers and isolated tstms through the
night.
.WED...W to NW winds 15 to 20 kt. Seas 4 to 6 ft. Period
15 seconds.
.WED NIGHT...W to NW winds 15 to 20 kt. Seas 4 to 6 ft. Period
15 seconds.
.THU...W winds 10 to 15 kt. Seas 3 to 5 ft. Period 15 seconds.
.THU NIGHT...W to NW winds 15 to 20 kt. Seas 4 to 6 ft. Period
15 seconds.
.FRI...W winds 15 to 20 kt. Seas 4 to 6 ft. Period 15 seconds.

$$

PMZ024-240430-
Colima and Jalisco within 300 nm offshore S of 20N and E of
110W-
922 AM PDT Mon Sep 23 2024

.TODAY...NW winds 10 to 15 kt in the afternoon. Seas 4 to 6 ft.
Period 8 seconds. Scattered showers and isolated tstms through
the day.
.TONIGHT...NW winds 10 to 15 kt. Seas 4 to 6 ft. Period
8 seconds.
.TUE...NW winds 15 to 20 kt. Seas 5 to 7 ft. Period 8 seconds.
Numerous showers and scattered tstms through the day.
.TUE NIGHT...NW winds 15 to 20 kt. Seas 5 to 7 ft. Period
8 seconds. Numerous showers and scattered tstms through the
night.
.WED...W to NW winds 15 to 20 kt. Seas 5 to 7 ft. Period
8 seconds.
.WED NIGHT...W to NW winds 15 to 20 kt. Seas 6 to 8 ft in NW
swell. Period 8 seconds.
.THU...W to NW winds 10 to 15 kt. Seas 5 to 7 ft in NW swell.
Period 8 seconds.
.THU NIGHT...W to NW winds 15 to 20 kt. Seas 5 to 7 ft. Period
8 seconds.
.FRI...W to NW winds 10 to 15 kt. Seas 5 to 7 ft in NW swell.
Period 9 seconds.

$$

PMZ025-240430-
Michoacan and Guerrero within 250 nm offshore-
922 AM PDT Mon Sep 23 2024

.TODAY...W to NW winds 15 to 20 kt in the afternoon. Seas 5 to
7 ft. Period 8 seconds. Numerous showers and scattered tstms.
.TONIGHT...W to NW winds 20 to 25 kt. Seas 6 to 8 ft. Period
8 seconds. Scattered showers and isolated tstms through the
night.
.TUE...W to NW winds 20 to 25 kt. Seas 6 to 9 ft in W swell.
Period 8 seconds. Numerous showers and scattered tstms.
.TUE NIGHT...W to NW winds 20 to 25 kt. Seas 6 to 9 ft in W
swell. Period 8 seconds. Numerous showers and scattered tstms.
.WED...W winds 20 to 25 kt. Seas 7 to 10 ft in W to NW swell.
Period 8 seconds.
.WED NIGHT...W to NW winds 15 to 20 kt Within 60 nm of shore,
and W 20 to 25 kt Elsewhere. Seas 7 to 11 ft in W to NW swell.
Period 8 seconds.
.THU...W winds 10 to 15 kt Within 60 nm of shore, and W to NW
20 to 25 kt Elsewhere. Seas 7 to 11 ft in W to NW swell. Period
9 seconds.
.THU NIGHT...W winds 20 to 25 kt. Seas 7 to 10 ft in W to NW
swell. Period 9 seconds.
.FRI...W winds 20 to 25 kt. Seas 6 to 9 ft in W to NW swell.
Period 9 seconds.

$$

PMZ026-240430-
Oaxaca W of Puerto Angel within 250 nm offshore-
922 AM PDT Mon Sep 23 2024

...HURRICANE WARNING...

.TODAY...TROPICAL STORM CONDITIONS. N of 14N, N to NE winds
60 to 65 kt in the afternoon. S of 14N, W winds 25 to 30 kt in
the afternoon. Seas 12 to 19 ft in SW to W swell. Period 9
seconds. Numerous showers and scattered tstms.
.TONIGHT...HURRICANE CONDITIONS EXPECTED. NW winds 60 to 80 kt
N of 14N, and W 25 to 30 kt S of 14N. Seas 9 to 15 ft in W
swell. Period 9 seconds. Scattered showers and isolated tstms.
.TUE...HURRICANE CONDITIONS EXPECTED. W to NW winds 65 to 75 kt
N of 14N, and SW to W 25 to 30 kt S of 14N. Seas 8 to 12 ft in
SW to W swell. Period 8 seconds. Scattered showers and isolated
tstms.
.TUE NIGHT...TROPICAL STORM CONDITIONS EXPECTED. N of 14N, W
winds 55 to 60 kt, diminishing to 35 to 40 kt late. S
of 14N, SW to W winds 25 to 30 kt. Seas 9 to 14 ft in SW to W
swell. Period 9 seconds. Numerous showers and scattered tstms.
.WED...W winds 25 to 30 kt. Seas 9 to 13 ft in SW swell. Period
9 seconds.
.WED NIGHT...SW to W winds 20 to 25 kt. Seas 9 to 13 ft in SW to
W swell. Period 9 seconds.
.THU...SW to W winds 20 to 25 kt. Seas 9 to 13 ft in SW swell.
Period 9 seconds.
.THU NIGHT...SW winds 25 to 30 kt. Seas 9 to 13 ft in SW swell.
Period 9 seconds.
.FRI...SW winds 20 to 25 kt. Seas 8 to 12 ft in SW swell. Period
9 seconds.

$$

PMZ028-240430-
Oaxaca E of Puerto Angel within 300 nm offshore including the
Gulf of Tehuantepec-
922 AM PDT Mon Sep 23 2024

...TROPICAL STORM WARNING...

.TODAY...TROPICAL STORM CONDITIONS POSSIBLE. SW winds 25 to
35 kt in the afternoon. Seas 7 to 10 ft in SW to W swell. Period
9 seconds. Numerous showers and scattered tstms.
.TONIGHT...TROPICAL STORM CONDITIONS POSSIBLE. SW winds 25 to
35 kt. Seas 7 to 10 ft in SW to W swell. Period 9 seconds.
Scattered showers and isolated tstms through the night.
.TUE...TROPICAL STORM CONDITIONS POSSIBLE. SW winds 25 to
30 kt. Seas 7 to 11 ft in W swell. Period 9 seconds. Numerous
showers and scattered tstms.
.TUE NIGHT...TROPICAL STORM CONDITIONS POSSIBLE. SW winds 25 to
35 kt. Seas 9 to 13 ft in W swell. Period 10 seconds. Numerous
showers and scattered tstms.
.WED...SW winds 25 to 30 kt. Seas 9 to 13 ft in SW to W swell.
Period 10 seconds.
.WED NIGHT...SW winds 25 to 30 kt. Seas 9 to 13 ft in SW to W
swell. Period 10 seconds.
.THU...SW winds 25 to 30 kt. Seas 9 to 13 ft in SW to W swell.
Period 9 seconds.
.THU NIGHT...SW winds 20 to 25 kt. Seas 8 to 12 ft in SW to W
swell. Period 9 seconds.
.FRI...SW winds 20 to 25 kt. Seas 8 to 12 ft in W swell. Period
9 seconds.

$$

PMZ029-240430-
Offshore Chiapas E of 94W-
922 AM PDT Mon Sep 23 2024

.TODAY...S to SW winds 10 to 15 kt in the afternoon. Seas 4 to
6 ft. Period 9 seconds. Scattered showers and isolated tstms.
.TONIGHT...E of 93W, W winds 10 kt in the evening, becoming
variable winds less than 5 kt. W of 93W, S to SW winds 10 to
15 kt. Seas 5 to 7 ft in SW to W swell. Period 9 seconds.
Scattered showers and isolated tstms through the night.
.TUE...E of 93W, variable winds less than 5 kt, becoming W 10 to
15 kt in the afternoon. W of 93W, SW winds 15 to 20 kt. Seas
5 to 7 ft in SW to W swell. Period 9 seconds. Numerous showers
and scattered tstms.
.TUE NIGHT...W winds 10 to 15 kt E of 93W, and SW 15 to 20 kt W
of 93W. Seas 6 to 8 ft in W swell. Period 10 seconds. Numerous
showers and scattered tstms.
.WED...E of 93W, SE to S winds 10 kt, shifting to SW in the
afternoon. W of 93W, S to SW winds 20 to 25 kt. Seas 7 to 10 ft
in SW to W swell. Period 10 seconds.
.WED NIGHT...E of 93W, W to NW winds 10 to 15 kt, shifting to S
late. W of 93W, S to SW winds 15 to 20 kt. Seas 7 to
11 ft in SW to W swell. Period 10 seconds.
.THU...E of 93W, S winds 10 kt in the morning, becoming variable
winds less than 5 kt. W of 93W, SW winds 15 to 20 kt. Seas 7 to
11 ft in SW to W swell. Period 10 seconds.
.THU NIGHT...SW winds 10 to 15 kt. Seas 7 to 10 ft in SW to W
swell. Period 10 seconds.
.FRI...SW winds 10 to 15 kt. Seas 6 to 9 ft in SW to W swell.
Period 10 seconds.

$$

Forecaster ADAMS