Tropical Storm Dennis

[gkrangers]

This is not a Texas storm even though many would like it to be .

Yeah...and some people want to pull it into the west coast of Florida...

Hate to agree, but it's true. Chance of this storm following that much of a Western path is slim to nothing. I believe the current path, which includes eastern Louisiana, is too far West.

Yeah, damn professional mets, they know nothing.

[feederband]

Doesn't appear to be moving very fast.. It looks like a boat waiting to come in and dock but it's waiting for cindy to get toatally out of the way...

[tw861]

This is not a Texas storm even though many would like it to be .

Yeah...and some people want to pull it into the west coast of Florida...

Have any of you checked out Ortt's latest forecast. AFM where do you think it's headed ?

[cycloneye]

Discussion very shortly.

[cycloneye]

TCDAT4
TROPICAL STORM DENNIS DISCUSSION NUMBER 5
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
11 PM EDT TUE JUL 05 2005

DENNIS HAS CONTINUED TO GET BETTER ORGANIZED AND HAS INTENSIFIED
DURING THE PAST 6 HOURS. A NOAA RECON REPORT AT 650 MB INDICATED
FLIGHT-LEVEL WINDS OF 45 KT IN THE NORTHEAST QUADRANT AT 05/2114Z
AND A CENTRAL PRESSURE OF 1001 MB. USING ABOUT 95 PERCENT OF THE
FLIGHT-LEVEL WINDS AND A T3.0/45 KT SATELLITE INTENSITY ESTIMATE
FROM TAFB AND SAB SUPPORT INCREASING THE INITIAL INTENSITY TO 45
KT. UPPER-LEVEL OUTFLOW REMAINS IMPRESSIVE IN ALL QUADRANTS.

THE INITIAL MOTION ESTIMATE IS 295/15. DENNIS HAS SLOWED ITS FORWARD
SPEED SOMEWHAT...POSSIBLY DUE TO RE-ORGANIZATION OF THE DEEP
CONVECTION AROUND THE CENTER. THE NHC MODEL GUIDANCE REMAINS
TIGHTLY CLUSTERED ABOUT THE PREVIOUS FORECAST TRACKS AND TAKES
DENNIS BETWEEN HAITI AND JAMAICA AND THEN BETWEEN JAMAICA AND
SOUTHEASTERN CUBA THROUGH 72 HOURS AS THE CYCLONE MOVES AROUND THE
SOUTHWEST PERIPHERY OF A DEEP-LAYERED SUBTROPICAL RIDGE THAT LIES
EAST-WEST ACROSS THE WESTERN ATLANTIC AND FLORIDA. HOWEVER...AFTER
THAT...THE FORECAST BECOMES A LITTLE MURKY. ALL OF THE MODELS
WEAKEN THE WESTERN PORTION OF THE RIDGE OVER FLORIDA AS A SHARP
SHORTWAVE TROUGH OVER THE CENTRAL U.S. DIGS SOUTHEASTWARD INTO THE
CENTRAL GULF OF MEXICO BY DAYS 4 AND 5...BEFORE LIFTING OUT SLOWLY
TO THE NORTHEAST AFTER THAT. SINCE DENNIS IS A LARGER THAN AVERAGE
TROPICAL CYCLONE THAT IS FORECAST TO BECOME A MAJOR HURRICANE IN
DAYS 3-5...THE LARGE OUTER CIRCULATION COULD ERODE THE RIDGE EVEN
MORE...RESULTING IN WEAKER STEERING CURRENTS THAN THE 5-8 KT THAT
THE MODELS ARE FORECASTING. THE OFFICIAL TRACK IS ALMOST IDENTICAL
TO THE PREVIOUS FORECAST AND IS ALONG THE EXTREME EASTERN..OR
RIGHT...SIDE OF THE MODEL GUIDANCE ENVELOPE.

DENNIS IS EXPECTED TO REMAIN IN A VERY LOW SHEAR AND HIGH SST
ENVIRONMENT..WHICH UNFORTUNATELY ARE PRIME CONDITIONS FOR PRODUCING
INTENSE HURRICANES. THE OFFICIAL INTENSITY FORECAST IS MUCH HIGHER
THAN THE PREVIOUS FORECASTS...BUT IS LESS THAN THE SHIPS AND GFDL
INTENSITY MODELS...WHICH BRING DENNIS TO 108 KT IN 96 HOURS AND 113
KT IN 60 HOURS...RESPECTIVELY.

FORECASTER STEWART

FORECAST POSITIONS AND MAX WINDS

INITIAL 06/0300Z 14.6N 69.2W 45 KT
12HR VT 06/1200Z 15.8N 71.3W 55 KT
24HR VT 07/0000Z 17.4N 74.0W 70 KT
36HR VT 07/1200Z 18.8N 76.5W 80 KT
48HR VT 08/0000Z 20.1N 78.8W 90 KT
72HR VT 09/0000Z 22.4N 82.4W 100 KT
96HR VT 10/0000Z 24.5N 84.5W 100 KT
120HR VT 11/0000Z 27.0N 86.5W 100 KT

[Brent]

HOWEVER...AFTER
THAT...THE FORECAST BECOMES A LITTLE MURKY. ALL OF THE MODELS
WEAKEN THE WESTERN PORTION OF THE RIDGE OVER FLORIDA AS A SHARP
SHORTWAVE TROUGH OVER THE CENTRAL U.S. DIGS SOUTHEASTWARD INTO THE
CENTRAL GULF OF MEXICO BY DAYS 4 AND 5...BEFORE LIFTING OUT SLOWLY
TO THE NORTHEAST AFTER THAT. SINCE DENNIS IS A LARGER THAN AVERAGE
TROPICAL CYCLONE THAT IS FORECAST TO BECOME A MAJOR HURRICANE IN
DAYS 3-5...THE LARGE OUTER CIRCULATION COULD ERODE THE RIDGE EVEN
MORE...RESULTING IN WEAKER STEERING CURRENTS THAN THE 5-8 KT THAT
THE MODELS ARE FORECASTING. THE OFFICIAL TRACK IS ALMOST IDENTICAL
TO THE PREVIOUS FORECAST AND IS ALONG THE EXTREME EASTERN..OR
RIGHT...SIDE OF THE MODEL GUIDANCE ENVELOPE.

Oh joy... a slow-moving large major hurricane in the Gulf of Mexico. Better get some sleep now.

[Matt-hurricanewatcher]

By the way that looks. I would not be surprized if Dennis is trying to get retired. In all seriousness you would not ever of thought of a storm this powerful to form an July.

[Wnghs2007]

HOWEVER...AFTER
THAT...THE FORECAST BECOMES A LITTLE MURKY. ALL OF THE MODELS
WEAKEN THE WESTERN PORTION OF THE RIDGE OVER FLORIDA AS A SHARP
SHORTWAVE TROUGH OVER THE CENTRAL U.S. DIGS SOUTHEASTWARD INTO THE
CENTRAL GULF OF MEXICO BY DAYS 4 AND 5...BEFORE LIFTING OUT SLOWLY
TO THE NORTHEAST AFTER THAT. SINCE DENNIS IS A LARGER THAN AVERAGE
TROPICAL CYCLONE THAT IS FORECAST TO BECOME A MAJOR HURRICANE IN
DAYS 3-5...THE LARGE OUTER CIRCULATION COULD ERODE THE RIDGE EVEN
MORE...RESULTING IN WEAKER STEERING CURRENTS THAN THE 5-8 KT THAT
THE MODELS ARE FORECASTING. THE OFFICIAL TRACK IS ALMOST IDENTICAL
TO THE PREVIOUS FORECAST AND IS ALONG THE EXTREME EASTERN..OR
RIGHT...SIDE OF THE MODEL GUIDANCE ENVELOPE.

Oh joy... a slow-moving large major hurricane in the Gulf of Mexico. Better get some sleep now.

Indeed. If it slows down enough it could, POSSIBLY, allow another trough to sweep down from the Pacific Northwest and Northern Plains and pick up the system. Or it could just sit in the Gulf of mexico until it upwells so much that it basically kills itself.

[cycloneye]

The words from Stacey Stewart look like he is very concerned.

[feederband]

Somebody is going to get the CRAP kicked out of them....

[Brent]

By the way that looks. I would not be surprized if Dennis is trying to get retired. In all seriousness you would not ever of thought of a storm this powerful to form an July.

He tried hard in 1999... remember that crazy loop?

I think he's gonna make it this time. If the NHC track is correct(forget the U.S. for a minute) and it hits Cuba as a Cat 3, it'll be retired.

[Normandy]

Heh, and we are two months from the peak.

[JTD]

By the way that looks. I would not be surprized if Dennis is trying to get retired. In all seriousness you would not ever of thought of a storm this powerful to form an July.

So true. This is amazing...Just like last year was amazing in it's own way.

[feederband]

Heh, and we are two months from the peak.

Don't remind me...

[Scorpion]

The Bermuda high is strong. I think that there will be a significant CV storm in the next few weeks.

[Air Force Met]

Maybe they are looking at a different model...but I don't see a sharp trof digging into the central GOM on days 4 and 5...

http://www.nco.ncep.noaa.gov/pmb/nwprod ... 0_108m.gif

[cycloneye]

The track did not changed a big deal from the 5 PM one.

[Stratosphere747]

Maybe they are looking at a different model...but I don't see a sharp trof digging into the central GOM on days 4 and 5...

http://www.nco.ncep.noaa.gov/pmb/nwprod ... 0_108m.gif

I'm assuming that a sharp trof would tend to move this more on a North type of motion AFM, once it gets in the GOM?

[Normandy]

Yes it would Strat.

[Air Force Met]

Maybe they are looking at a different model...but I don't see a sharp trof digging into the central GOM on days 4 and 5...

http://www.nco.ncep.noaa.gov/pmb/nwprod ... 0_108m.gif

I'm assuming that a sharp trof would tend to move this more on a North type of motion AFM, once it gets in the GOM?

yes...if there was a sharp trof, but I don't see one in teh GFS or the euro. Maybe I am missing it...somebody please show me what they are looking at...not even the canadian...