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Hurricane.com - Advisory


Expires:No;;388327
WTPZ32 KNHC 112032
TCPEP2

BULLETIN
Post-Tropical Cyclone Aletta Advisory Number  25
NWS National Hurricane Center Miami FL       EP022018
200 PM PDT Mon Jun 11 2018

...ALETTA DEGENERATES INTO A REMNANT LOW...
...THIS IS THE LAST ADVISORY...


SUMMARY OF 200 PM PDT...2100 UTC...INFORMATION
----------------------------------------------
LOCATION...16.6N 118.3W
ABOUT 700 MI...1125 KM SW OF THE SOUTHERN TIP OF BAJA CALIFORNIA
MAXIMUM SUSTAINED WINDS...35 MPH...55 KM/H
PRESENT MOVEMENT...W OR 265 DEGREES AT 7 MPH...11 KM/H
MINIMUM CENTRAL PRESSURE...1005 MB...29.68 INCHES


WATCHES AND WARNINGS
--------------------
There are no coastal watches or warnings in effect.


DISCUSSION AND OUTLOOK
----------------------
At 200 PM PDT (2100 UTC), the center of Post-Tropical Cyclone Aletta
was located near latitude 16.6 North, longitude 118.3 West. The
post-tropical cyclone is moving toward the west near 7 mph (11
km/h), and this general motion is expected to continue through
tonight. A turn toward the west-southwest with a reduction in
forward speed is forecast to occur on Tuesday.

Maximum sustained winds are near 35 mph (55 km/h) with higher gusts.
Weakening is expected during the next 48 hours, and he remnant low
is forecast to dissipate by the end of the week.

The estimated minimum central pressure is 1005 mb (29.68 inches).


HAZARDS AFFECTING LAND
----------------------
None.


NEXT ADVISORY
-------------
This is the last public advisory issued by the National Hurricane
Center on this system.  For additional information on the remnant
low, please see High Seas Forecasts issued by the National Weather
Service, under AWIPS header NFDHSFEPI, WMO header FZPN02 KWBC, and
on the web at http://ocean.weather.gov/shtml/NFDHSFEPI.shtml.

$$
Forecaster Stewart



 

Expires:No;;388426
WTPZ42 KNHC 112033
TCDEP2

Post-Tropical Cyclone Aletta Discussion Number  25
NWS National Hurricane Center Miami FL       EP022018
200 PM PDT Mon Jun 11 2018

The depression has degenerated into a remnant low pressure system
due to the lack of any convection during the past 14 hours, and is
mainly a large swirl of cold-air stratocumulus clouds now. The
initial intensity of 30 kt is based on a few 29- to 30-kt wind
vectors noted in recent 1703Z and 1803Z ASCAT overpasses. Further
weakening and gradual spin down of the wind field is expected while
the cyclone moves slowly west-southwestward over sub-26 deg C waters
during the next several days, with dissipation forecast to occur by
day 5, if not sooner.

This is the last advisory on this system issued by the National
Hurricane Center.  For additional information on the remnant low
please see High Seas Forecasts issued by the National Weather
Service...under AWIPS header NFDHSFEPI and WMO header FZPN02 KWBC.

FORECAST POSITIONS AND MAX WINDS

INIT  11/2100Z 16.6N 118.3W   30 KT  35 MPH...POST-TROP/REMNT LOW
 12H  12/0600Z 16.4N 119.0W   25 KT  30 MPH...POST-TROP/REMNT LOW
 24H  12/1800Z 16.3N 119.7W   25 KT  30 MPH...POST-TROP/REMNT LOW
 36H  13/0600Z 16.1N 120.0W   20 KT  25 MPH...POST-TROP/REMNT LOW
 48H  13/1800Z 15.9N 120.1W   20 KT  25 MPH...POST-TROP/REMNT LOW
 72H  14/1800Z 15.9N 120.0W   15 KT  15 MPH...POST-TROP/REMNT LOW
 96H  15/1800Z 15.9N 119.9W   15 KT  15 MPH...POST-TROP/REMNT LOW
120H  16/1800Z...DISSIPATED

$$
Forecaster Stewart



 

    

More information

Expires:No;;388324
WTPZ22 KNHC 112031
TCMEP2

POST-TROPICAL CYCLONE ALETTA FORECAST/ADVISORY NUMBER  25
NWS NATIONAL HURRICANE CENTER MIAMI FL       EP022018
2100 UTC MON JUN 11 2018

THERE ARE NO COASTAL WATCHES OR WARNINGS IN EFFECT.

POST-TROPICAL CYCLONE CENTER LOCATED NEAR 16.6N 118.3W AT 11/2100Z
POSITION ACCURATE WITHIN  20 NM

PRESENT MOVEMENT TOWARD THE WEST OR 265 DEGREES AT   6 KT

ESTIMATED MINIMUM CENTRAL PRESSURE 1005 MB
MAX SUSTAINED WINDS  30 KT WITH GUSTS TO  40 KT.
12 FT SEAS..150NE  90SE  90SW 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 16.6N 118.3W AT 11/2100Z
AT 11/1800Z CENTER WAS LOCATED NEAR 16.6N 118.0W

FORECAST VALID 12/0600Z 16.4N 119.0W...POST-TROP/REMNT LOW
MAX WIND  25 KT...GUSTS  35 KT.

FORECAST VALID 12/1800Z 16.3N 119.7W...POST-TROP/REMNT LOW
MAX WIND  25 KT...GUSTS  35 KT.

FORECAST VALID 13/0600Z 16.1N 120.0W...POST-TROP/REMNT LOW
MAX WIND  20 KT...GUSTS  30 KT.

FORECAST VALID 13/1800Z 15.9N 120.1W...POST-TROP/REMNT LOW
MAX WIND  20 KT...GUSTS  30 KT.

FORECAST VALID 14/1800Z 15.9N 120.0W...POST-TROP/REMNT LOW
MAX WIND  15 KT...GUSTS  20 KT.

EXTENDED OUTLOOK. NOTE...ERRORS FOR TRACK HAVE AVERAGED NEAR 100 NM
ON DAY 4 AND 150 NM ON DAY 5...AND FOR INTENSITY NEAR 15 KT EACH DAY

OUTLOOK VALID 15/1800Z 15.9N 119.9W...POST-TROP/REMNT LOW
MAX WIND  15 KT...GUSTS  20 KT.

OUTLOOK VALID 16/1800Z...DISSIPATED

REQUEST FOR 3 HOURLY SHIP REPORTS WITHIN 300 MILES OF 16.6N 118.3W

THIS IS THE LAST FORECAST/ADVISORY ISSUED BY THE NATIONAL HURRICANE
CENTER ON THIS SYSTEM.  FOR ADDITIONAL INFORMATION ON THE REMNANT
LOW PLEASE SEE HIGH SEAS FORECASTS ISSUED BY THE NATIONAL WEATHER
SERVICE...UNDER AWIPS HEADER NFDHSFEPI AND WMO HEADER FZPN02 KWBC.

$$
FORECASTER STEWART




 

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