NHC09Z判定已轉化為溫帶氣旋

AL, 29, 2020111306,   , BEST,   0, 327N,  780W,  40, 1004, TS

000
WTNT44 KNHC 130834
TCDAT4

Post-Tropical Cyclone Eta Discussion Number  52
NWS National Hurricane Center Miami FL       AL292020
400 AM EST Fri Nov 13 2020

While the cyclone is still generating a cluster of strong
convection to the northeast of the center, satellite imagery,
surface observations and scatterometer data indicate that Eta has
merged with a baroclinic zone and become an extratropical cyclone
off the southeastern coast of the United States.  The scatterometer
data showed vectors of 40-50 kt along a front or convergence zone
northeast of the center, but these vectors were in the strong
convective region and their reliability is uncertain.  This, the
initial intensity is held at a possibly conservative 40 kt.  Eta is
forecast to strengthen as a baroclinic low until the system is
absorbed by another low pressure area in about 48 h.

The initial motion is 060/18.  The post-tropical cyclone cyclone
should continue this general motion with an increase in forward
speed until it is absorbed.

This is the last advisory issued by the National Hurricane Center
on Eta.   Additional information on this system can be found in
High Seas Forecasts issued by the National Weather Service, under
AWIPS header NFDHSFAT1, WMO header FZNT01 KWBC, and online at
ocean.weather.gov/shtml/NFDHSFAT1.php

FORECAST POSITIONS AND MAX WINDS

INIT  13/0900Z 33.3N  76.8W   40 KT  45 MPH...POST-TROP/EXTRATROP
12H  13/1800Z 35.0N  73.1W   40 KT  45 MPH...POST-TROP/EXTRATROP
24H  14/0600Z 37.9N  66.1W   45 KT  50 MPH...POST-TROP/EXTRATROP
36H  14/1800Z 41.1N  57.8W   45 KT  50 MPH...POST-TROP/EXTRATROP
48H  15/0600Z...ABSORBED BY AN EXTRATROPICAL LOW

$$
Forecaster Beven

已出海，將沿美國東岸北上並逐漸轉化

FORECAST POSITIONS AND MAX WINDS

INIT  12/1500Z 30.2N  81.8W   40 KT  45 MPH
12H  13/0000Z 32.0N  79.8W   40 KT  45 MPH
24H  13/1200Z 34.1N  76.0W   40 KT  45 MPH
36H  14/0000Z 37.3N  70.0W   40 KT  45 MPH...POST-TROP/EXTRATROP
48H  14/1200Z 40.5N  62.5W   45 KT  50 MPH...POST-TROP/EXTRATROP
60H  15/0000Z...DISSIPATED

NHC判定09Z於佛羅里達州登陸，登陸強度45KT氣壓996hPa

000
WTNT64 KNHC 120917
TCUAT4

Tropical Storm Eta Tropical Cyclone Update
NWS National Hurricane Center Miami FL       AL292020
420 AM EST Thu Nov 12 2020

...ETA MAKES LANDFALL NEAR CEDAR KEY FLORIDA...

A National Ocean Service weather station indicates that Eta made
landfall near Cedar Key Florida at 400 AM EST.  Maximum sustained
winds were estimated at 50 mph (85 km/h), with a minimum central
pressure of 996 mb (29.42 inches).


SUMMARY OF 420 AM EST...0920 UTC...INFORMATION
----------------------------------------------
LOCATION...29.2N 83.0W
ABOUT 5 MI...10 KM NNE OF CEDAR KEY FLORIDA
MAXIMUM SUSTAINED WINDS...50 MPH...85 KM/H
PRESENT MOVEMENT...NE OR 40 DEGREES AT 13 MPH...20 KM/H
MINIMUM CENTRAL PRESSURE...996 MB...29.42 INCHES

$$
Forecaster Blake

FORECAST POSITIONS AND MAX WINDS

INIT  12/0900Z 29.1N  83.0W   45 KT  50 MPH
12H  12/1800Z 30.6N  81.4W   40 KT  45 MPH
24H  13/0600Z 32.6N  78.1W   35 KT  40 MPH
36H  13/1800Z 35.2N  73.4W   40 KT  45 MPH...POST-TROP/EXTRATROP
48H  14/0600Z 38.0N  67.0W   45 KT  50 MPH...POST-TROP/EXTRATROP
60H  14/1800Z...DISSIPATED

$$
Forecaster Blak

NHC非正式報升格為一級颶風

194
WTNT64 KNHC 111239
TCUAT4

Hurricane Eta Tropical Cyclone Update
NWS National Hurricane Center Miami FL       AL292020
735 AM EST Wed Nov 11 2020

...ETA BECOMES A HURRICANE AGAIN OFFSHORE OF SOUTHWESTERN FLORIDA...

Reports from a NOAA Hurricane Hunter aircraft and Doppler radar data
indicate that Eta has re-strengthened into a hurricane offshore the
southwestern coast of Florida, with maximum sustained winds of 75
mph (120 km/h), with higher gusts.


SUMMARY OF 735 AM EST...1235 UTC...INFORMATION
----------------------------------------------
LOCATION...25.8N 83.8W
ABOUT 130 MI...210 KM WSW OF FT. MYERS FLORIDA
ABOUT 170 MI...270 KM SSW OF TAMPA FLORIDA
MAXIMUM SUSTAINED WINDS...75 MPH...120 KM/H
PRESENT MOVEMENT...NNE OR 15 DEGREES AT 15 MPH...24 KM/H
MINIMUM CENTRAL PRESSURE...983 MB...29.03 INCHES

$$
Forecaster Stewart

目前位於古巴西北近海,將於墨西哥灣中緩慢向北移動,NHC略微調低上望為60KT

FORECAST POSITIONS AND MAX WINDS

INIT  10/1500Z 22.7N  85.3W   50 KT  60 MPH
12H  11/0000Z 23.1N  85.4W   55 KT  65 MPH
24H  11/1200Z 24.0N  85.3W   60 KT  70 MPH
36H  12/0000Z 25.0N  85.2W   60 KT  70 MPH
48H  12/1200Z 25.9N  85.1W   55 KT  65 MPH
60H  13/0000Z 26.6N  85.2W   45 KT  50 MPH
72H  13/1200Z 27.2N  85.5W   40 KT  45 MPH
96H  14/1200Z 28.6N  86.4W   35 KT  40 MPH
120H  15/1200Z 30.1N  86.4W   30 KT  35 MPH

環流相對鬆散，NHC定強維持55KT，預料稍後西南折並上望C1

FORECAST POSITIONS AND MAX WINDS

INIT  09/0300Z 24.6N  80.5W   55 KT  65 MPH
12H  09/1200Z 24.9N  82.6W   60 KT  70 MPH
24H  10/0000Z 24.2N  84.3W   60 KT  70 MPH
36H  10/1200Z 23.6N  85.1W   65 KT  75 MPH
48H  11/0000Z 24.2N  85.1W   65 KT  75 MPH
60H  11/1200Z 25.5N  84.9W   65 KT  75 MPH
72H  12/0000Z 26.6N  84.6W   60 KT  70 MPH
96H  13/0000Z 28.2N  83.6W   55 KT  65 MPH
120H  14/0000Z 30.0N  82.0W   45 KT  50 MPH...INLAND

$$
Forecaster Brown

NHC判定09Z登陸古巴，登陸強度55KT

525
WTNT34 KNHC 080847
TCPAT4

BULLETIN
Tropical Storm Eta Advisory Number  32
NWS National Hurricane Center Miami FL       AL292020
400 AM EST Sun Nov 08 2020

...ETA MAKING LANDFALL ALONG THE SOUTH-CENTRAL COAST OF CUBA...
...FORECAST TO PRODUCE DANGEROUS STORM SURGE, FLASH FLOODS AND
STRONG WINDS OVER PORTIONS OF CUBA AND FLORIDA...


SUMMARY OF 400 AM EST...0900 UTC...INFORMATION
----------------------------------------------
LOCATION...21.5N 79.3W
ABOUT 90 MI...145 KM W OF CAMAGUEY CUBA
ABOUT 300 MI...485 KM S OF MIAMI FLORIDA
MAXIMUM SUSTAINED WINDS...65 MPH...100 KM/H
PRESENT MOVEMENT...NE OR 35 DEGREES AT 12 MPH...19 KM/H
MINIMUM CENTRAL PRESSURE...991 MB...29.27 INCHES