WPAC: KILO - Post-Tropical

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Hurricane Jed
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#161 Postby Hurricane Jed » Thu Aug 20, 2015 6:21 pm

Might be a good idea.
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Re:

#162 Postby srainhoutx » Thu Aug 20, 2015 6:24 pm

CrazyC83 wrote:Should we have a separate models threat for this storm? I know it is not normal, but this is a rare US threat in the Pacific.


Just my thoughts but it might be more convenient for those who may join us in the discussions if we keep one clean Topic for potential Kilo. Typically the Central Pacific does not attract that much attention. This may be one of those exceptions since the Hawaiian Island Chain may see an impact.
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Re:

#163 Postby Yellow Evan » Thu Aug 20, 2015 6:28 pm

CrazyC83 wrote:Should we have a separate models threat for this storm? I know it is not normal, but this is a rare US threat in the Pacific.


It's a lot more convenient just to have just 1 thread. I see no need, but it's just me.
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#164 Postby Kingarabian » Thu Aug 20, 2015 6:33 pm

As long as the models continue to windshield wipe, we're going to have a lot of model runs in the next couple of days.
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Re: CPAC: THREE-C - Tropical Depression

#165 Postby Yellow Evan » Thu Aug 20, 2015 6:33 pm

Image

Pulsating, but has colder cloud tops than most TD's.
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#166 Postby Kingarabian » Thu Aug 20, 2015 6:43 pm

:uarrow:

Alyono is right. Center fix really looks off by at least 2 degrees.
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#167 Postby Yellow Evan » Thu Aug 20, 2015 6:44 pm

Kingarabian wrote::uarrow:

Alyono is right. Center fix really looks off by at least 2 degrees.


Yea. Likely around 149W and a little further north than I expected.
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Re: CPAC: THREE-C - Tropical Depression

#168 Postby vbhoutex » Thu Aug 20, 2015 6:45 pm

Once this goes to TS we can start the other threads as we normally do.
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Re: CPAC: THREE-C - Tropical Depression

#169 Postby Yellow Evan » Thu Aug 20, 2015 6:48 pm

vbhoutex wrote:Once this goes to TS we can start the other threads as we normally do.


Normally, in this basin, we have two threads, one for Recon and one for general discussion, so I'm not sure what you mean.
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Re: CPAC: THREE-C - Tropical Depression

#170 Postby Yellow Evan » Thu Aug 20, 2015 6:53 pm

Also worth noting out that this system or its extratropical remnants of it may last a long time.

Image

Image
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#171 Postby Alyono » Thu Aug 20, 2015 7:23 pm

incredible

TXPN41 PHFO 202354
TCSNP1

CENTRAL PACIFIC TROPICAL CYCLONE SUMMARY - FIXES
NWS CENTRAL PACIFIC HURRICANE CENTER HONOLULU HI
2355 UTC THU AUG 20 2015

A. Tropical depression Three-C.

B. 20/2330Z.

C. 10.5°N.

D. 150.7°W.

E. Goes-15.

F. T2.5/2.5/d1.5/24 hrs.

G. Vis/ir/eir.

H. Remarks: Shear pattern with deep convection < 45 nm from center yields a DT of 2.5. PT is 2.5 as is met. FT based on DT.

I. Addl positions none.

$$

Burke.
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#172 Postby Yellow Evan » Thu Aug 20, 2015 7:25 pm

:uarrow: Don't disagree with the T-number but I do disagree with the center fix.
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#173 Postby Kingarabian » Thu Aug 20, 2015 7:29 pm

https://www.youtube.com/watch?v=aTKnqTo3Nvk

- By the one and only, Levi Cowan. His take on 93C.

Really good points. A lot of uncertainty.
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#174 Postby Alyono » Thu Aug 20, 2015 7:31 pm

I'd say a 2.0. If the center is back toward 149, then maybe even a 1.5

Checked a windsat from 15Z, center is clearly east of CPHC position. Also, it could be closer to 12N

http://manati.star.nesdis.noaa.gov/wind ... 8_noaa.png
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Re:

#175 Postby Yellow Evan » Thu Aug 20, 2015 7:44 pm

Kingarabian wrote:https://www.youtube.com/watch?v=aTKnqTo3Nvk

- By the one and only, Levi Cowan. His take on 93C.

Really good points. A lot of uncertainty.


Always liked Levi.

My take is that there is good agreement that this will pass close to Hawaii as a strong hurricane, but it's uncertain on how close this comes. We still don't have a fully consolidated center yet. Right now, I'd follow the mutli-model consensus TVCE.
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#176 Postby Yellow Evan » Thu Aug 20, 2015 7:46 pm

21/0000 UTC 11.7N 148.0W T1.5/2.0 03C -- Central Pacific

Likely still a TD. And look at the center fix.
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Re:

#177 Postby Kingarabian » Thu Aug 20, 2015 7:52 pm

Yellow Evan wrote:21/0000 UTC 11.7N 148.0W T1.5/2.0 03C -- Central Pacific

Likely still a TD. And look at the center fix.


Big difference compared to the CPHC's 11Am fix:

Location: 11.0N 150.2W
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Re: Re:

#178 Postby Yellow Evan » Thu Aug 20, 2015 7:53 pm

Kingarabian wrote:
Yellow Evan wrote:21/0000 UTC 11.7N 148.0W T1.5/2.0 03C -- Central Pacific

Likely still a TD. And look at the center fix.


Big difference compared to the CPHC's 11Am fix:

Location: 11.0N 150.2W


And their Dvorak fix of 10.5N 150.7W. Time for a TC position update IMO.
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Re: Re:

#179 Postby Kingarabian » Thu Aug 20, 2015 8:02 pm

Yellow Evan wrote:
Kingarabian wrote:
Yellow Evan wrote:21/0000 UTC 11.7N 148.0W T1.5/2.0 03C -- Central Pacific

Likely still a TD. And look at the center fix.


Big difference compared to the CPHC's 11Am fix:

Location: 11.0N 150.2W


And their Dvorak fix of 10.5N 150.7W. Time for a TC position update IMO.


In the next couple of advisories we could be seeing multiple TC position updates. This thing is still unorganized and subject to relocations.
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Re: CPAC: THREE-C - Tropical Depression

#180 Postby Yellow Evan » Thu Aug 20, 2015 8:19 pm

Code: Select all

                    * EAST PACIFIC SHIPS INTENSITY FORECAST          *
                    * IR SAT DATA AVAILABLE,       OHC AVAILABLE     *
                    *  THREE       CP032015  08/21/15  00 UTC        *

TIME (HR)          0     6    12    18    24    36    48    60    72    84    96   108   120
V (KT) NO LAND    30    34    38    44    48    62    73    80    84    87    88    91    88
V (KT) LAND       30    34    38    44    48    62    73    80    84    87    88    91    88
V (KT) LGE mod    30    33    36    40    45    56    70    82    86    86    86    86    85
Storm Type      TROP  TROP  TROP  TROP  TROP  TROP  TROP  TROP  TROP  TROP  TROP  TROP  TROP

SHEAR (KT)        21    15    13    12    10     6     2     5     6     5     8    13    11
SHEAR ADJ (KT)     6     4     1    -1    -3    -3    -1     0     3     4     4     2     3
SHEAR DIR         72    80    73    66    58    20    15   285   328   299   261   255   261
SST (C)         29.5  29.5  29.3  29.2  29.1  28.6  28.3  28.3  28.3  28.4  28.3  28.2  28.1
POT. INT. (KT)   161   161   159   159   158   152   148   146   146   146   145   143   141
200 MB T (C)   -52.2 -52.0 -52.4 -52.6 -51.9 -51.6 -51.4 -51.7 -51.2 -51.9 -51.3 -51.7 -51.2
TH_E DEV (C)       7     8     8     8     9     9     9    10     9     8     8     8     8
700-500 MB RH     68    67    66    65    65    64    66    70    73    75    74    74    70
MODEL VTX (KT)    18    19    20    20    19    21    22    24    26    27    28    31    31
850 MB ENV VOR   104   106    98    91    86    75    63    41    17    20    25    35    54
200 MB DIV        81    81    59    47    30    23    51    64    87    92   107    98    73
700-850 TADV      -5    -2    -1    -4    -2    -5     1     8    10    13    18    16    10
LAND (KM)       1037   919   812   748   716   726   796   742   647   540   417   326   274
LAT (DEG N)     10.8  11.4  11.9  12.2  12.5  13.6  14.8  16.1  17.3  18.4  19.4  20.1  20.5
LONG(DEG W)    150.8 152.1 153.4 154.9 156.4 159.6 161.9 163.2 163.5 163.3 162.7 162.2 161.9
STM SPEED (KT)    14    14    14    15    16    15    10     7     6     5     5     3     2
HEAT CONTENT      27    27    30    30    35    46    41    61    61    57    57    59    53

  FORECAST TRACK FROM OFCI      INITIAL HEADING/SPEED (DEG/KT):275/ 14      CX,CY: -13/  1
  T-12 MAX WIND:  25            PRESSURE OF STEERING LEVEL (MB):  429  (MEAN=581)
  GOES IR BRIGHTNESS TEMP. STD DEV.  50-200 KM RAD:  15.1 (MEAN=14.5)
  % GOES IR PIXELS WITH T < -20 C    50-200 KM RAD:  92.0 (MEAN=65.0)

                        INDIVIDUAL CONTRIBUTIONS TO INTENSITY CHANGE
                         6   12   18   24   36   48   60   72   84   96  108  120
                        ----------------------------------------------------------
  SAMPLE MEAN CHANGE     0.   0.   0.   1.   1.   1.   0.   0.  -1.  -1.  -2.  -2.
  SST POTENTIAL          0.   0.   1.   3.   8.  14.  20.  25.  28.  29.  31.  32.
  VERTICAL SHEAR MAG     0.   1.   1.   1.   2.   4.   5.   6.   7.   7.   7.   6.
  VERTICAL SHEAR ADJ     0.   0.   0.   0.   0.   1.   1.   0.   0.   0.   0.  -1.
  VERTICAL SHEAR DIR     1.   2.   3.   5.   7.   9.   7.   6.   5.   4.   3.   2.
  PERSISTENCE            1.   1.   2.   2.   2.   2.   2.   1.   1.   1.   1.   0.
  200/250 MB TEMP.       0.  -1.  -1.  -2.  -4.  -6.  -8. -10. -11. -12. -12. -12.
  THETA_E EXCESS         0.   0.   0.   0.   0.   0.   0.   0.   0.   0.   0.   0.
  700-500 MB RH          0.   0.   0.   1.   1.   1.   2.   3.   3.   3.   4.   4.
  MODEL VTX TENDENCY     0.   1.   2.   1.   4.   5.   8.  11.  13.  15.  19.  19.
  850 MB ENV VORTICITY   0.   0.   0.   1.   2.   2.   3.   3.   3.   3.   4.   4.
  200 MB DIVERGENCE      0.   1.   1.   1.   1.   1.   1.   1.   1.   0.  -1.  -2.
  850-700 T ADVEC        0.   0.   0.   0.   0.   0.   0.   0.   0.   0.   1.   2.
  ZONAL STORM MOTION     0.   1.   1.   2.   3.   4.   4.   4.   4.   4.   3.   3.
  STEERING LEVEL PRES    0.   0.   0.   0.  -1.  -1.  -2.  -2.  -3.  -3.  -3.  -3.
  DAYS FROM CLIM. PEAK   0.   0.   0.   0.   0.   0.   0.   1.   1.   2.   2.   2.
  GOES PREDICTORS        1.   2.   3.   4.   4.   4.   4.   3.   2.   1.   1.   1.
  OCEAN HEAT CONTENT     0.   0.   1.   1.   2.   3.   3.   3.   3.   4.   4.   2.
                        ----------------------------------------------------------
  TOTAL CHANGE           4.   8.  14.  18.  32.  43.  50.  54.  57.  58.  61.  58.

   ** 2013 E. Pacific RI INDEX CP032015 THREE      08/21/15  00 UTC **
           ( 30 KT OR MORE MAX WIND INCREASE IN NEXT 24 HR)
 
 12 HR PERSISTENCE (KT):   5.0 Range:-22.0 to  38.5 Scaled/Wgted Val:  0.4/  1.0
 850-200 MB SHEAR (KT) :  14.3 Range: 18.7 to   1.4 Scaled/Wgted Val:  0.3/  0.4
 POT = MPI-VMAX (KT)   : 129.8 Range: 40.3 to 141.7 Scaled/Wgted Val:  0.9/  0.9
 STD DEV OF IR BR TEMP :  15.1 Range: 38.9 to   2.4 Scaled/Wgted Val:  0.7/  0.7
 Heat content (KJ/cm2) :  29.8 Range:  3.6 to  75.9 Scaled/Wgted Val:  0.4/  0.3
 D200 (10**7s-1)       :  59.6 Range:-11.0 to 135.3 Scaled/Wgted Val:  0.5/  0.4
 % area w/pixels <-30 C:  90.0 Range: 41.4 to 100.0 Scaled/Wgted Val:  0.8/  0.4
 850-700 MB REL HUM (%):  70.8 Range: 57.6 to  96.8 Scaled/Wgted Val:  0.3/  0.0
 
 Prob of RI for 25 kt RI threshold=    33% is   2.5 times the sample mean(13.1%)
 Prob of RI for 30 kt RI threshold=    25% is   2.9 times the sample mean( 8.7%)
 Prob of RI for 35 kt RI threshold=    19% is   3.1 times the sample mean( 6.0%)
 Prob of RI for 40 kt RI threshold=    13% is   3.0 times the sample mean( 4.3%)


Sitll 30 knots.
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