000
ABPZ20 KNHC 061131
TWOEP

Tropical Weather Outlook
NWS National Hurricane Center Miami FL
500 AM PDT Sun Sep 6 2026

For the eastern and central North Pacific east of 180 longitude:

Active Systems:
The National Hurricane Center is issuing advisories on Hurricane
Lowell, located about 600 miles south-southwest of the Hawaiian
Islands, on Tropical Storm Karina, located several hundred miles east-northeast of the Hawaiian Islands, and on Hurricane Marie,
located several hundred miles west of the southern tip of the
Baja California Peninsula.

Offshore of Southwestern Mexico:
A trough of low pressure located several hundred miles
south-southwest of the coast of southwestern Mexico is producing
disorganized showers and thunderstorms. Gradual development of this
system is possible, and a tropical depression could form during the
middle or latter portions of this week while the system moves
generally west-northwestward at 10 to 15 mph.
* Formation chance through 48 hours...low...10 percent.
* Formation chance through 7 days...medium...60 percent.

$$
Forecaster Hagen
NNN

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000
ABPZ20 KNHC 081150
TWOEP

Tropical Weather Outlook
NWS National Hurricane Center Miami FL
500 AM PDT Tue Sep 8 2026

For the eastern and central North Pacific east of 180 longitude:

Active Systems:
The National Hurricane Center is issuing advisories on Hurricane
Lowell, located just north-northwest of Lihue, Kauai, and on
Tropical Storm Marie, located several hundred miles west of Punta
Eugenia, Mexico.

Offshore of Southwestern Mexico:
Showers and thunderstorms associated with a broad area of low
pressure located several hundred miles southwest of southwestern
Mexico are showing signs of organization. Gradual development of
this system is likely, and a tropical depression is expected to
form later this week while the system moves generally
west-northwestward at 10 to 15 mph.
* Formation chance through 48 hours...low...20 percent.
* Formation chance through 7 days...high...70 percent.

Well South of the Southern Tip of Baja California:
An area of low pressure is forecast to develop several hundred miles
south of the southern tip of Baja California this weekend or early
next week. Some slow development is possible as this system moves
generally west-northwestward.
* Formation chance through 48 hours...low...0 percent.
* Formation chance through 7 days...low...20 percent.

$$
Forecaster Evans/Kelly
NNN

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476
ACPN50 PHFO 091738
TWOCP

Tropical Weather Outlook
NWS Central Pacific Hurricane Center Honolulu HI
Issued by NWS National Hurricane Center Miami FL
800 AM HST Wed Sep 09 2026

For the central North Pacific...between 140W and 180W:

Active Systems:
The National Hurricane Center is issuing advisories on Tropical
Storm Lowell, located several hundred miles north-northwest of the
Hawaiian Islands.

Central Portion and West Portion of the East Pacific (EP96):
Showers and thunderstorms continue to show signs of organization
with an area of low pressure located several hundred miles
south-southwest of the southern tip of the Baja California
peninsula. Environmental conditions are expected to support
continued development of this system, and a tropical depression is
expected to form later today or tonight. as the system moves
generally west-northwestward at 10 to 15 mph. For more information,
including gale warnings, please see High Seas Forecast issued by
National Weather Service.

* Formation chance through 48 hours...high...90 percent.
* Formation chance through 7 days...high...90 percent.

Central Portion and West Portion of the East Pacific:
An area of low pressure is forecast to form several hundred miles
south of the southern tip of the Baja California Peninsula this
weekend or early next week. Some gradual development is possible
thereafter, and a tropical depression could form early next week
while the system moves generally west-northwestward.

* Formation chance through 48 hours...low...near 0 percent.
* Formation chance through 7 days...medium...40 percent.

Well South-Southeast of the Hawaiian Islands:
An area of low pressure is forecast to form several hundred miles south-southeast of the Hawaiian Islands. Some gradual development is
possible late this week into this weekend as this system moves
slowly north-northwestward.

* Formation chance through 48 hours...low...near 0 percent.
* Formation chance through 7 days...low...20 percent.

&&
High Seas Forecasts issued by the National Weather Service
can be found under AWIPS header NFDHSFEPI, WMO header FZPN02
KWBC, and on the web at ocean.weather.gov/shtml/NFDHSFEPI.php

$$
Forecaster Evans/Kelly
NNNN


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310
ABPZ20 KNHC 101144
TWOEP

Tropical Weather Outlook
NWS National Hurricane Center Miami FL
500 AM PDT Thu Sep 10 2026

For the eastern and central North Pacific east of 180 longitude:

Active Systems:
The National Hurricane Center is issuing advisories on Tropical
Storm Lowell, located well northwest of the Hawaiian Islands, and on
Tropical Storm Norbert, located several hundred miles southwest of
the southern tip of the Baja California Peninsula.

Well South-Southeast of the Hawaiian Islands:
Disorganized showers and thunderstorms located well to the
south-southeast of the Hawaiian Islands are associated with a broad
trough of low pressure. Some gradual development of this system is
possible late this week and into the weekend while it moves
generally northward and then meanders to the southeast of the
Hawaiian Islands.

* Formation chance through 48 hours...low...20 percent.
* Formation chance through 7 days...low...30 percent.

Central Portion and West Portion of the East Pacific:
Showers and thunderstorms associated with a broad area of low
pressure are located several hundred miles southwest of the
southwestern Mexico coast. Gradual development of this system is
expected, and a tropical depression is likely to form by early next
week while it moves generally westward over central and western
portions of the East Pacific.

* Formation chance through 48 hours...low...10 percent.
* Formation chance through 7 days...high...70 percent.

&&
Public Advisories on Tropical Storm Norbert are issued under WMO
header WTPZ34 KNHC and under AWIPS header MIATCPEP4.
Forecast/Advisories on Tropical Storm Norbert are issued under WMO
header WTPZ24 KNHC and under AWIPS header MIATCMEP4.

$$
Forecaster Evans/Hagen
NNN

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000
ABPZ20 KNHC 111143
TWOEP

Tropical Weather Outlook
NWS National Hurricane Center Miami FL
500 AM PDT Fri Sep 11 2026

For the eastern and central North Pacific east of 180 longitude:

Active Systems:
The National Hurricane Center is issuing advisories on Tropical
Storm Norbert, located several hundred miles west-southwest of the
southern tip of the Baja California Peninsula.

Well Southeast of the Hawaiian Islands:
Disorganized showers and thunderstorms located more than 500 miles
to the southeast of the Hawaiian Islands are associated with a broad
trough of low pressure. Some gradual development of this system is
possible over the next few days while it moves generally northward
and then meanders to the southeast of the Hawaiian Islands.

* Formation chance through 48 hours...low...20 percent.
* Formation chance through 7 days...low...20 percent.

Central and Western East Pacific:
Showers and thunderstorms associated with a broad area of low
pressure are located several hundred miles southwest of the
southwestern coast of Mexico. Gradual development of this system is anticipated, and a tropical depression is likely to form late this
weekend or early next week while it moves generally
west-northwestward to westward over the central and western portions
of the East Pacific.

* Formation chance through 48 hours...low...30 percent.
* Formation chance through 7 days...high...80 percent.

$$
Forecaster Evans/Hagen
NNN

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000
ABPZ20 KNHC 121130
TWOEP

Tropical Weather Outlook
NWS National Hurricane Center Miami FL
500 AM PDT Sat Sep 12 2026

For the eastern and central North Pacific east of 180 longitude:

Active Systems:
The National Hurricane Center is issuing advisories on Tropical
Storm Norbert, located well west-southwest of the southern tip of
the Baja California Peninsula.

Central and Western East Pacific (EP97):
Earlier satellite-derived winds indicate that the surface
circulation associated with an area of low pressure located
several hundred miles southwest of the southwestern coast of Mexico
remains poorly defined. Environmental conditions still appear
conducive for development, however, and a tropical depression is
expected to form during the next couple of days while it moves
generally west-northwestward to westward over the central and
western portions of the eastern Pacific basin. For more
information, including gale warnings, please see the High Seas
Forecast issued by the National Weather Service.

* Formation chance through 48 hours...high...80 percent.
* Formation chance through 7 days...high...90 percent.

Well Southeast of the Hawaiian Islands:
A broad area of low pressure located several hundred miles
southeast of Hilo, Hawaii, is producing disorganized showers and thunderstorms. Development of this system is becoming less likely
while it drifts generally west-northwestward.

* Formation chance through 48 hours...low...10 percent.
* Formation chance through 7 days...low...10 percent.

&&

High Seas Forecasts issued by the National Weather Service
can be found under AWIPS header NFDHSFEPI, WMO header FZPN02
KWBC, and on the web at ocean.weather.gov/shtml/NFDHSFEPI.php

$$
Forecaster Roberts
NNN

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000
ABPZ20 KNHC 131134
TWOEP

Tropical Weather Outlook
NWS National Hurricane Center Miami FL
500 AM PDT Sun Sep 13 2026

For the eastern and central North Pacific east of 180 longitude:

Active Systems:
The National Hurricane Center is issuing advisories on Tropical
Storm Norbert, located well west of the southern tip of the Baja
California Peninsula.

Central and Western East Pacific (EP97):
An area of low pressure located several hundred miles southwest of
the southern tip of the Baja Peninsula continues to produce an area
of disorganized showers and thunderstorms to the southeast of its
center. Environmental conditions are expected to be generally
conducive for development, and a tropical depression is expected to
form during the next couple of days while the system moves
generally westward. For more information on this disturbance,
including gale warnings, please see High Seas Forecasts issued
by the National Weather Service.

* Formation chance through 48 hours...high...80 percent.
* Formation chance through 7 days...high...90 percent.

&&
High Seas Forecasts issued by the National Weather Service
can be found under AWIPS header NFDHSFEPI, WMO header FZPN02
KWBC, and on the web at ocean.weather.gov/shtml/NFDHSFEPI.php

$$
Forecaster Brown
NNN

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000
ABPZ20 KNHC 141722
TWOEP

Tropical Weather Outlook
NWS National Hurricane Center Miami FL
1100 AM PDT Mon Sep 14 2026

For the eastern and central North Pacific east of 180 longitude:

Active Systems:
The National Hurricane Center is issuing advisories on Tropical
Storm Norbert, located well east of the Hawaiian Islands, and on
Tropical Depression Fifteen-E, located several hundred
miles southwest of the southern tip of the Baja California
Peninsula.

Tropical cyclone formation is not expected during the next 7 days.

&&
Public advisories on Tropical Depression Fifteen-E are issued under
WMO header WTPZ35 KNHC and under AWIPS header MIATCPEP5.
Forecast/Advisories on Tropical Depression Fifteen-E are issued
under WMO header WTPZ25 KNHC and under AWIPS header MIATCMEP5.

$$
Forecaster Katz/Beven
NNN

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000
ABPZ20 KNHC 151107
TWOEP

Tropical Weather Outlook
NWS National Hurricane Center Miami FL
500 AM PDT Tue Sep 15 2026

For the eastern and central North Pacific east of 180 longitude:

Active Systems:
The National Hurricane Center is issuing advisories on Tropical
Depression Norbert, located well east of the Hawaiian Islands, and
on Tropical Depression Fifteen-E, located well west-southwest of the
southern tip of the Baja California Peninsula.

Southwest of Southwestern Mexico:
An area of low pressure could form well offshore of southwestern
Mexico by the end of the week or over the weekend. Environmental
conditions appear conducive for some gradual development thereafter
while the system moves west-northwestward to northwestward at about
10 mph.
* Formation chance through 48 hours...low...near 0 percent.
* Formation chance through 7 days...low...30 percent.

$$
Forecaster Cangialosi
NNN

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000
ABPZ20 KNHC 161758
TWOEP

Tropical Weather Outlook
NWS National Hurricane Center Miami FL
Issued by the NWS Weather Prediction Center College Park MD
1100 AM PDT Wed Sep 16 2026

For the eastern and central North Pacific east of 180 longitude:

Northwestern Mexico:
An area of low pressure has moved inland over the western
portions of Sonora during the last few hours. While development
chances have ended, the risk of heavy rains and flash flooding
continues to portions of Sonora and into the Southwestern deserts of
the United States.
* Formation chance through 48 hours...low...near 0 percent.
* Formation chance through 7 days...low...near 0 percent.

Southwest of Southwestern Mexico:
An area of low pressure could form well offshore of southwestern
Mexico within the next few days. Environmental conditions appear
conducive for some gradual development, and this system could
become a tropical depression early next week while it moves slowly northwestward or northward.
* Formation chance through 48 hours...low...near 0 percent.
* Formation chance through 7 days...medium...60 percent.

Western East Pacific:
A tropical wave is producing disorganized showers and thunderstorms
well to the south of the southern tip of the Baja California
Peninsula. Upper-level winds are forecast to remain unfavorable
for significant development through the weekend as the system moves
westward at 10 to 15 mph. However, gradual development of
this system is possible early next week, and this system could
become a tropical depression when it reaches the western
portion of the east Pacific basin.
* Formation chance through 48 hours...low...near 0 percent.
* Formation chance through 7 days...medium...40 percent.

$$
Forecaster Gallina/Blake
NNN

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000
ABPZ20 KNHC 171154
TWOEP

Tropical Weather Outlook
NWS National Hurricane Center Miami FL
500 AM PDT Thu Sep 17 2026

For the eastern and central North Pacific east of 180 longitude:

Western East Pacific:
A tropical wave continues to produce disorganized showers and
thunderstorms well to the south-southwest of the southern tip of the
Baja California Peninsula. Environmental conditions appear
conducive for gradual development of this system, and a tropical
depression is likely to form this weekend or early next week as it
moves westward at 10 to 15 mph across the western part of the East
Pacific.

* Formation chance through 48 hours...low...20 percent.
* Formation chance through 7 days...high...70 percent.

Well East-Southeast of the Hawaiian Islands (Former TD15-E):
Showers and thunderstorms have increased somewhat with an area of
low pressure related to the remnants of Tropical Depression
Fifteen-E. Environmental conditions appear only marginally conducive
for some development of this system as it moves gradually westward,
remaining east-southeast of the Hawaiian Islands.

* Formation chance through 48 hours...low...10 percent.
* Formation chance through 7 days...low...10 percent.

Southwest of Southwestern Mexico:
Another tropical wave is producing disorganized showers and
thunderstorms several hundred miles south of southwestern Mexico. Environmental conditions also appear conducive for gradual
development of this system, and a tropical depression is likely to
form late this weekend or early next week while it moves gradually northwestward turning northward off the coast of southwestern
Mexico.

* Formation chance through 48 hours...low...near 0 percent.
* Formation chance through 7 days...high...80 percent.

$$
Forecaster Papin
NNN

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000
ABPZ20 KNHC 181154
TWOEP

Tropical Weather Outlook
NWS National Hurricane Center Miami FL
500 AM PDT Fri Sep 18 2026

For the eastern and central North Pacific east of 180 longitude:

Western East Pacific (EP98):
Showers and thunderstorms associated with a broad area of low
pressure located well southwest of the southern tip of the Baja
California Peninsula remain disorganized. Environmental conditions
appear conducive for additional development of this system, and a
tropical depression is likely to form this weekend as it moves
westward at 10 to 15 mph across the western East Pacific.
* Formation chance through 48 hours...medium...60 percent.
* Formation chance through 7 days...high...80 percent.

Well East-Southeast of the Hawaiian Islands (Former TD 15-E):
Showers and thunderstorms associated with the remnants of Tropical
Depression Fifteen-E, located more than 1000 miles east-southeast
of the Hawaiian Islands, have increased somewhat this morning but
remain disorganized. Environmental conditions appear conducive for
some development of this system as it moves westward to
west-southwestward, and a tropical depression could form well to
the south or southeast of the Hawaiian Islands by the middle to
latter part of next week.
* Formation chance through 48 hours...low...10 percent.
* Formation chance through 7 days...medium...40 percent.

South of Southwestern Mexico:
A broad area of low pressure located about 800 miles
south-southwest of the southwestern coast of Mexico is producing
disorganized shower and thunderstorm activity. Environmental
conditions are conducive for development, and a tropical depression
is likely to form late this weekend or early next week while it
moves gradually north-northwestward and northward off the coast of southwestern Mexico.
* Formation chance through 48 hours...low...20 percent.
* Formation chance through 7 days...high...80 percent.

$$
Forecaster Berg
NNN

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426
ABPZ20 KNHC 191148
TWOEP

Tropical Weather Outlook
NWS National Hurricane Center Miami FL
500 AM PDT Sat Sep 19 2026

For the eastern and central North Pacific east of 180 longitude:

South-Southwest of Southwestern Mexico (EP99):
Recent satellite-derived wind data show that the area of low
pressure located well south-southwest of the southwestern coast of
Mexico is still elongated, and the shower and thunderstorm activity
remains disorganized. However, environmental conditions are
conducive for development, and a tropical depression is expected to
form over the next couple of days as the system moves generally
northward off the coast of southwestern Mexico. Interests along the southwestern and west-central coast of Mexico should monitor the
progress of this system.
* Formation chance through 48 hours...high...80 percent.
* Formation chance through 7 days...high...90 percent.

Western East Pacific (EP98):
Disorganized showers and thunderstorms continue to persist in
association with an area of low pressure located well southwest of
the southern tip of the Baja California Peninsula. Environmental
conditions are conducive for development, and a tropical depression
is expected to form over the next several days as it moves westward
to west-northwestward at 10 to 15 mph across the western East
Pacific.
* Formation chance through 48 hours...high...80 percent.
* Formation chance through 7 days...high...80 percent.

Well East-Southeast of the Hawaiian Islands (Former TD 15-E):
Showers and thunderstorms associated with the remnants of Tropical
Depression Fifteen-E, located well east of the Hawaiian Islands,
remain disorganized. Environmental conditions appear conducive for
some development of this system next week as it moves westward to west-southwestward, and a tropical depression could form well to the
south or southeast of the Hawaiian Islands towards the middle to
latter portion of next week.
* Formation chance through 48 hours...low...10 percent.
* Formation chance through 7 days...medium...50 percent.

$$
Forecaster Katz/Berg
NNN

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