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Drought busting rains PRE event


dailylurker

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TROPICAL STORM JOAQUIN DISCUSSION NUMBER 8

NWS NATIONAL HURRICANE CENTER MIAMI FL AL112015

ISSUED BY THE NWS WEATHER PREDICTION CENTER COLLEGE PARK MD

500 PM EDT TUE SEP 29 2015

The cloud pattern of the storm has become better organized during

the day, with the low level center now embedded inside the northern

edge of the main area of deep convection. Animation of cirrus

motions suggest that upper-level outflow is becoming a little more

prominent over the northern portion of the circulation, and this is

consistent with decreasing northerly shear. Flight-level,

dropsonde, and SFMR wind observations from an Air Force

reconnaissance aircraft indicate that Joaquin has strengthened and

the intensity is now estimated to be 55 kt. With a more favorable

upper-level wind environment now expected to prevail, the official

forecast calls for more strengthening than the previous advisories.

Joaquin is expected to become a hurricane within 24 hours, with

additional intensification likely thereafter. The NHC intensity

forecast is similar to the latest SHIPS model output.

Fixes from the aircraft show a southward component of motion and

the initial motion estimate is now 240/4 kt. Joaquin is currently

south of the southwestern periphery of a weak mid-level ridge. The

ECMWF model shows this ridging to the north of the tropical cyclone

to be more prominent over the next few days than the other dynamical

models. Consequently, the ECMWF takes Joaquin more to the

west and southwest through 72 hours than any of the other available

guidance. Later in the forecast period, there is a significant

divergence in the track guidance. The HWRF and U.K. Met Office

models forecast Joaquin to move over the east coast of the United

States later in the period whereas the ECMWF and GFS keep the system

well offshore. The official forecast lies between these

possibilities and is similar to the latest Florida State University

Superensemble solution.

Interests in the Bahamas should monitor the progress of this storm.

Watches or warnings may be issued for portions of these islands

later this evening.

FORECAST POSITIONS AND MAX WINDS

INIT 29/2100Z 26.0N 71.0W 55 KT 65 MPH

12H 30/0600Z 25.8N 71.6W 60 KT 70 MPH

24H 30/1800Z 25.5N 72.5W 65 KT 75 MPH

36H 01/0600Z 25.1N 73.3W 70 KT 80 MPH

48H 01/1800Z 24.8N 73.9W 75 KT 85 MPH

72H 02/1800Z 25.0N 74.0W 80 KT 90 MPH

96H 03/1800Z 29.0N 73.0W 80 KT 90 MPH

120H 04/1800Z 34.0N 71.0W 75 KT 85 MPH

$

Forecaster Pasch

They have a Superensemble?

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990mb, 65 kt the Idea of a CAT2 landfall on the DelMarva on Sunday night isn't that inconceivable now, even though I was laughing at it yesterday.

 

A little early still, I think (says the guy living on Delmarva).  A lot of uncertainty.  Once Joaquin manages to put his pants on overnight, I suspect the models will start to make a little more sense and converge.

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990mb, 65 kt the Idea of a CAT2 landfall on the DelMarva on Sunday night isn't that inconceivable now, even though I was laughing at it yesterday.

Think it probably would need to get to major somewhere down there before seriously considering that strength up here.
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A little early still, I think (says the guy living on Delmarva).  A lot of uncertainty.  Once Joaquin manages to put his pants on overnight, I suspect the models will start to make a little more sense and converge.

 

Let the wild goose chase begin. FWIW 15z SREF  has a lot of Carolinas landfalls or close too it. All but 1 member would probably hit the east coast if extrapolated.

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