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Last advisory on Lee at 5am Sat; Maria to expected to be extratropical by later today or tonight

Posted by Chris in Tampa on 9/30/2017, 5:25 am

I mention Lee because it it moving faster than the last sustained wind speed they have for it.

5:00 AM AST Sat Sep 30
Location: 46.7°N 35.6°W
Moving: NE at 51 mph
Min pressure: 998 mb
Max sustained: 50 mph

Lee on floater while it lasts:
http://www.ssd.noaa.gov/PS/TROP/floaters/14L/14L_floater.html

Or on Northeast Atlantic imagery:
http://www.ssd.noaa.gov/PS/TROP/trop-atl.html

Not really sure how that would work for parts of the NW side of the storm. Around calm at times in some areas? Not sure. But there would also be higher wind gusts. If the difference were higher maybe the wind might change to the opposite direction at times. Hard to really visualize.





Post-Tropical Cyclone Lee Discussion Number  49
NWS National Hurricane Center Miami FL       AL142017
500 AM AST Sat Sep 30 2017

Lee is now over water colder than 20 degrees Celsius and is being
blasted by 35 kt of west-northwesterly shear, and it has not been
producing deep convection for at least the past 12 hours.  The
cyclone has therefore become post tropical, and this will be the
last advisory.  Without any deep convection, subjective and
objective Dvorak numbers have decreased, and the initial intensity
is estimated to be 45 kt.

Lee continues to accelerate northeastward with an initial motion
estimate of 050/44 kt.  Continued acceleration is expected today,
although the global model fields indicate that Lee's circulation
will open up into a trough within the next 6 to 12 hours.  A
12-hour point is provided in the official forecast for continuity's
sake, but Lee will most likely have dissipated by then.

Additional information on this system can be found in High Seas
Forecasts issued by Meteo France under WMO header FQNT50 LFPW and in
High Seas Forecasts issued by the UK Met Office under WMO header
FQNT21 EGRR.  These forecasts are available on the web at
http://www.meteofrance.com/previsions-meteo-marine/bulletin  and at
http://www.metoffice.gov.uk/public/weather/marine-high-seas/.

FORECAST POSITIONS AND MAX WINDS

INIT  30/0900Z 46.7N  35.6W   45 KT  50 MPH...POST-TROPICAL
12H  30/1800Z 49.9N  24.6W   45 KT  50 MPH...POST-TROPICAL
24H  01/0600Z...DISSIPATED

$$
Forecaster Berg

61



In this thread:

Last advisory on Lee at 5am Sat; Maria to expected to be extratropical by later today or tonight - Chris in Tampa, 9/30/2017, 5:25 am

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