Tropical Storm Bertha Model Runs

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#441 Postby KWT » Fri Jul 04, 2008 7:40 pm

Yep but it barely hangs onto the system at times, central pressures of 1006-1008 for most of the run suggests minimal TS, maybe even decaying to a TD from the GFDL. Interestingly it does show a fair amount of weakening in the next 24hrs as well.
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Re: Tropical Storm Bertha Model Runs

#442 Postby vacanechaser » Fri Jul 04, 2008 7:43 pm

ok, anyone seen the 0z hurricane models??? i cant find them... they should be out by now right???




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Re: Tropical Storm Bertha Model Runs

#443 Postby ekal » Fri Jul 04, 2008 7:49 pm

They usually come out at 00:45, so they should be on their way.
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Re: Tropical Storm Bertha Model Runs

#444 Postby Aric Dunn » Fri Jul 04, 2008 7:50 pm

finally the SFWMD site is updated.. so here is the animation from 24hrs ago to the 18z
Image
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Re: Tropical Storm Bertha Model Runs

#445 Postby cycloneye » Fri Jul 04, 2008 8:02 pm

Jesse,here they are. :)

582
WHXX01 KWBC 050057
CHGHUR
TROPICAL CYCLONE GUIDANCE MESSAGE
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
0057 UTC SAT JUL 5 2008

DISCLAIMER...NUMERICAL MODELS ARE SUBJECT TO LARGE ERRORS.
PLEASE REFER TO NHC OFFICIAL FORECASTS FOR TROPICAL CYCLONE
AND SUBTROPICAL CYCLONE INFORMATION.

ATLANTIC OBJECTIVE AIDS FOR

TROPICAL CYCLONE BERTHA (AL022008) 20080705 0000 UTC

...00 HRS... ...12 HRS... ...24 HRS. .. ...36 HRS...
080705 0000 080705 1200 080706 0000 080706 1200

LAT LON LAT LON LAT LON LAT LON
BAMS 15.8N 32.6W 17.1N 36.1W 18.1N 39.5W 18.9N 43.5W
BAMD 15.8N 32.6W 17.0N 35.6W 18.2N 38.8W 19.1N 41.8W
BAMM 15.8N 32.6W 17.0N 35.9W 18.0N 39.3W 18.8N 42.9W
LBAR 15.8N 32.6W 16.7N 36.1W 18.1N 39.8W 19.1N 43.8W
SHIP 45KTS 46KTS 48KTS 53KTS
DSHP 45KTS 46KTS 48KTS 53KTS

...48 HRS... ...72 HRS... ...96 HRS. .. ..120 HRS...
080707 0000 080708 0000 080709 0000 080710 0000

LAT LON LAT LON LAT LON LAT LON
BAMS 19.9N 47.4W 21.3N 54.5W 22.7N 61.2W 24.7N 66.8W
BAMD 20.3N 44.7W 22.7N 47.7W 23.2N 47.8W 22.6N 47.7W
BAMM 19.8N 46.3W 21.6N 51.3W 23.0N 55.4W 24.5N 58.3W
LBAR 20.1N 47.4W 22.7N 51.9W 25.2N 51.8W 27.3N 47.6W
SHIP 57KTS 65KTS 66KTS 62KTS
DSHP 57KTS 65KTS 66KTS 62KTS

...INITIAL CONDITIONS...
LATCUR = 15.8N LONCUR = 32.6W DIRCUR = 280DEG SPDCUR = 18KT
LATM12 = 14.7N LONM12 = 29.0W DIRM12 = 296DEG SPDM12 = 18KT
LATM24 = 13.4N LONM24 = 26.5W
WNDCUR = 45KT RMAXWD = 30NM WNDM12 = 45KT
CENPRS = 1000MB OUTPRS = 1012MB OUTRAD = 180NM SDEPTH = D
RD34NE = 90NM RD34SE = 30NM RD34SW = 0NM RD34NW = 75NM


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Re: Tropical Storm Bertha Model Runs

#446 Postby cycloneye » Fri Jul 04, 2008 8:06 pm

The 00:00 UTC SHIP Forecast:SHIP in this run has shear much less than in past runs thru 120 hours and that is why it has Bertha as a hurricane in the ladder part of run.

Code: Select all

               *   ATLANTIC SHIPS INTENSITY FORECAST       *
                    *        GOES/OHC INPUT INCLUDED            *
                    *      BERTHA  AL022008  07/05/08  00 UTC   *

TIME (HR)          0     6    12    18    24    36    48    60    72    84    96   108   120
V (KT) NO LAND    45    45    46    47    48    53    57    62    65    66    66    64    62
V (KT) LAND       45    45    46    47    48    53    57    62    65    66    66    64    62
V (KT) LGE mod    45    45    46    47    49    53    58    63    68    70    70    69    68

SHEAR (KTS)       14    11     8     7    12     8    12    13    17    19    20    20    12
SHEAR DIR        239   241   241   177   196   234   215   271   240   258   238   263   242
SST (C)         24.7  24.8  25.0  25.2  25.5  25.8  26.2  26.8  27.4  27.8  28.0  28.0  28.0
POT. INT. (KT)   106   106   108   109   112   115   118   123   130   135   137   137   137
ADJ. POT. INT.   104   104   105   107   110   112   115   118   123   125   126   126   125
200 MB T (C)   -53.9 -54.2 -54.3 -53.9 -54.1 -54.7 -54.2 -54.6 -54.4 -54.5 -54.2 -54.7 -54.5
TH_E DEV (C)       5     5     5     5     6     6     7     8     9     9    10     9    10
700-500 MB RH     62    61    59    57    54    52    52    50    44    45    47    50    52
GFS VTEX (KT)     15    14    14    13    13    13    12    12    12    12    12    10     8
850 MB ENV VOR   108   103   102   106   107    90    77    67    30     9   -13   -39   -52
200 MB DIV        62    57    35    16    19    43    54    27     9    16     0    20     6
LAND (KM)       1622  1810  1999  2030  1917  1719  1556  1455  1323  1144   991   852   732
LAT (DEG N)     15.8  16.2  16.5  16.8  17.0  17.6  18.0  18.7  19.7  20.8  22.1  23.1  23.8
LONG(DEG W)     32.6  34.4  36.1  37.9  39.7  43.4  47.1  50.2  52.8  55.1  57.1  59.3  61.8
STM SPEED (KT)    18    17    17    17    18    18    16    14    13    11    11    12    11
HEAT CONTENT       0     0     0     0     0     0     4    19    26    33    34    30    28

  FORECAST TRACK FROM OFCI      INITIAL HEADING/SPEED (DEG/KT):280/ 18      CX,CY: -17/  3
  T-12 MAX WIND:  45            PRESSURE OF STEERING LEVEL (MB):  635  (MEAN=625)
  GOES IR BRIGHTNESS TEMP. STD DEV. 100-300 KM RAD:  25.2 (MEAN=20.0)
  % GOES IR PIXELS WITH T < -20 C    50-200 KM RAD:  39.0 (MEAN=68.6)

                        INDIVIDUAL CONTRIBUTIONS TO INTENSITY CHANGE
                         6   12   18   24   36   48   60   72   84   96  108  120
                        ----------------------------------------------------------
  SAMPLE MEAN CHANGE     1.   2.   3.   4.   6.   8.   9.  10.  11.  12.  12.  13.
  SST POTENTIAL          0.   0.  -1.  -1.   0.   1.   3.   5.   7.   8.   9.   9.
  VERTICAL SHEAR         0.   1.   2.   2.   3.   5.   5.   5.   3.   2.   1.   1.
  PERSISTENCE            0.  -1.  -1.  -1.  -1.  -1.  -1.  -1.  -1.  -1.   0.   0.
  200/250 MB TEMP.       0.   0.   0.   0.   1.   1.   2.   2.   2.   3.   3.   4.
  THETA_E EXCESS         0.  -1.  -2.  -2.  -3.  -4.  -4.  -5.  -6.  -7.  -7.  -7.
  700-500 MB RH          0.   0.   0.   0.   0.   0.   0.   0.   0.   0.   0.   0.
  GFS VORTEX TENDENCY    0.   0.  -1.  -1.  -2.  -3.  -3.  -4.  -4.  -4.  -6.  -8.
  850 MB ENV VORTICITY   1.   1.   2.   2.   3.   4.   5.   5.   4.   4.   3.   2.
  200 MB DIVERGENCE      0.   1.   1.   1.   1.   2.   2.   2.   2.   2.   2.   1.
  ZONAL STORM MOTION     0.   0.   1.   1.   3.   3.   4.   5.   5.   6.   7.   8.
  STEERING LEVEL PRES    0.   0.   0.   0.   0.   0.   0.   0.  -1.  -1.  -1.  -1.
  DAYS FROM CLIM. PEAK   0.   0.   0.  -1.  -1.  -2.  -2.  -2.  -2.  -3.  -3.  -4.
                        ----------------------------------------------------------
  SUB-TOTAL CHANGE       1.   2.   3.   5.  10.  14.  18.  21.  21.  22.  20.  19.

  SATELLITE ADJUSTMENTS ----------------------------------------------------------
  MEAN ADJUSTMENT        0.   0.   0.   0.  -1.  -1.  -1.  -1.  -1.  -1.  -1.  -2.
  GOES IR STD DEV        0.   0.   0.   0.   0.   0.   0.   0.   0.   0.   0.   0.
  GOES IR PIXEL COUNT    0.  -1.  -1.  -1.  -1.  -1.   0.   1.   1.   1.   1.   0.
  OCEAN HEAT CONTENT     0.   0.   0.   0.   0.   0.  -1.  -1.  -1.  -1.  -1.  -1.
                        ----------------------------------------------------------
  TOTAL ADJUSTMENT      -1.  -1.  -1.  -2.  -2.  -2.  -2.  -1.  -1.  -1.  -1.  -2.
                        ----------------------------------------------------------
  TOTAL CHANGE (KT)      0.   1.   2.   3.   8.  12.  17.  20.  21.  21.  19.  17.

   ** 2008 ATLANTIC RI INDEX AL022008     BERTHA 07/05/08  00 UTC **
           ( 25 KT OR MORE MAX WIND INCREASE IN NEXT 24 HR)
 
 12 HR PERSISTENCE (KT):   0.0 Range:-45.0 to  30.0 Scaled/Wgted Val:  0.6/  1.1
 850-200 MB SHEAR (KT) :  10.5 Range: 35.1 to   3.2 Scaled/Wgted Val:  0.8/  1.2
 D200 (10**7s-1)       :  37.8 Range:-20.0 to 149.0 Scaled/Wgted Val:  0.3/  0.5
 POT = MPI-VMAX (KT)   :  60.7 Range: 25.1 to 130.7 Scaled/Wgted Val:  0.3/  0.4
 850-700 MB REL HUM (%):  76.2 Range: 56.0 to  88.0 Scaled/Wgted Val:  0.6/  0.3
 % area w/pixels <-30 C:  31.0 Range: 17.0 to 100.0 Scaled/Wgted Val:  0.2/  0.0
 STD DEV OF IR BR TEMP :  21.3 Range: 35.1 to   3.2 Scaled/Wgted Val:  0.4/  0.6
 Heat content (KJ/cm2) :   0.0 Range:  0.0 to 132.0 Scaled/Wgted Val:  0.0/  0.0
 
 Prob of RI for 25 kt RI threshold=    18% is   1.5 times the sample mean(12.3%)
 Prob of RI for 30 kt RI threshold=     3% is   0.3 times the sample mean( 7.8%)
 Prob of RI for 35 kt RI threshold=     1% is   0.3 times the sample mean( 4.5%)

   ##         ANNULAR HURRICANE INDEX (AHI) AL022008     BERTHA 07/05/08  00 UTC         ##
   ## STORM NOT ANNULAR, SCREENING STEP FAILED, NPASS=4 NFAIL=3                          ##
   ## AHI=  0   (AHI OF 100 IS BEST FIT TO ANN. STRUC., 1 IS MARGINAL, 0 IS NOT ANNULAR) ##
   ##     ANNULAR INDEX RAN NORMALLY   
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#447 Postby Aric Dunn » Fri Jul 04, 2008 8:07 pm

here you the deep bam

BAMD 20.3N 44.7W 22.7N 47.7W 23.2N 47.8W 22.6N 47.7W

loop
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Re: Tropical Storm Bertha Model Runs

#448 Postby Aric Dunn » Fri Jul 04, 2008 8:10 pm

new image .. with the 00z bams..

deep bam, does a loop.. feel that ridge and pushes back south ..

Image
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Re: Tropical Storm Bertha Model Runs

#449 Postby cycloneye » Fri Jul 04, 2008 10:26 pm

Well,for what its worth,this is the 00z NAM.Is that Bertha just east of the Leewards?

Image
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Re: Tropical Storm Bertha Model Runs

#450 Postby SouthFloridawx » Fri Jul 04, 2008 10:34 pm

I remember listening to Mike Watkins before about the Bamd, Bamm and Bams. If they are spread apart, that is a good indication that the system will have problems in the future. I can't remember exactly what he called it.
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Re: Tropical Storm Bertha Model Runs

#451 Postby AJC3 » Fri Jul 04, 2008 10:42 pm

SouthFloridawx wrote:I remember listening to Mike Watkins before about the Bamd, Bamm and Bams. If they are spread apart, that is a good indication that the system will have problems in the future. I can't remember exactly what he called it.


I like to call that the "poor man's shear forecast"
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Re: Tropical Storm Bertha Model Runs

#452 Postby lebron23 » Fri Jul 04, 2008 11:33 pm

00z GFS :eek:
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Re: Tropical Storm Bertha Model Runs

#453 Postby Aric Dunn » Fri Jul 04, 2008 11:34 pm

00z farther west.. and same speed as 18z .. the east coast trough is weaker and ridge builds back it...
its going to leave it behind and not pick it up ..

Image
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#454 Postby Aric Dunn » Fri Jul 04, 2008 11:37 pm

wow look at that ....
http://www.nco.ncep.noaa.gov/pmb/nwprod ... loop.shtml

ridge build back in..
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Re: Tropical Storm Bertha Model Runs

#455 Postby ROCK » Fri Jul 04, 2008 11:43 pm

not going to get caught up in one model run right now. I personally look to the EURO for track and the GFDL. Still a long way away......
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#456 Postby Aric Dunn » Fri Jul 04, 2008 11:44 pm

gfs.. landfall in south carolina to NC

http://www.nco.ncep.noaa.gov/pmb/nwprod ... loop.shtml
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Re: Tropical Storm Bertha Model Runs

#457 Postby Duddy » Fri Jul 04, 2008 11:45 pm

LOL, this run takes it on the same course as the last Bertha! Right into Wilmington! :lol:
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Re: Tropical Storm Bertha Model Runs

#458 Postby Aric Dunn » Fri Jul 04, 2008 11:45 pm

ROCK wrote:not going to get caught up in one model run right now. I personally look to the EURO for track and the GFDL. Still a long way away......



not getting caught up.. the synoptics set up is very important since all the models are still trending west .. im going to watch every model and analyze them all..
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Re:

#459 Postby 'CaneFreak » Fri Jul 04, 2008 11:46 pm

Aric Dunn wrote:gfs.. landfall in south carolina to NC

http://www.nco.ncep.noaa.gov/pmb/nwprod ... loop.shtml


yep...right up into the Wilmington area...hmmmmmmm
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Re: Tropical Storm Bertha Model Runs

#460 Postby ROCK » Fri Jul 04, 2008 11:46 pm

Duddy wrote:LOL, this run takes it on the same course as the last Bertha! Right into Wilmington! :lol:




now what are the odds of that happening? :lol:
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