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November 16-18 Storm System


Hoosier

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CIPS analogs based on the 12z GFS at 120 hours

 

 

post-14-0-86225900-1447361449_thumb.png

 

 

Checking the individual years, looks like the 500 mb low is deeper this time than most of these, with a few exceptions.  Also, some of these were decent severe weather producers so I'd say that could be a concern, if not in our subforum then farther south.

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Newest GFS has the ridging so strong that it creates a horseshoe block over the south Plains trough. The low pressure hardly moves between hours 96 and 126. As a result...

 

ievGZqF.gif

 

Sorry, way out of this subforum's area, but how can you resist sharing this; 48" bullseye in west Nebraska

VMsIy3q.gif

 

 

 

Just to give you an idea of how wild that run is...St. Louis's wettest November on record is 9.95".  They almost get that in one storm (looks like about 9" on this run).

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Strip of 1.8-2.0" PWATs on that 6z GFS run. 65F dews in November. Pure model porn.

 

Of note, the system seems to be universally slowed down over the last 2-3 runs on all of the globals, hence some of the eye-popping QPFs and moisture returns now showing up.

 

the slowing trend certainly makes sense, STL looks like potential ground zero

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6Z GFS MOS output for STL was 22.76". That has to be the most unrealistic QPF I've seen at least for here in St. Louis. Can somebody double check that?

 

Edit: Yeah, that looks close anyway. The WxBell graphic shows between 16-23" in the metro area.

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Thanks, here was the output I got off the Accuweather site.

GFS 0.5 Degree FORECAST FOR:  LAT =  38.74  LON =  -90.37


                                            06Z NOV13   * - APPROXIMATED
                TOTAL   TOTAL   TOTAL   SNCVR    SFC     2 M    1000    1000 
                 HR      CVP     NCP     LIQ     PCP     TMP     500     850 
                (IN)    (IN)    (IN)    (IN)    TYPES    (C)     THK     THK 
SUN 21Z 15-NOV  0.00    0.00    0.00    0.00      RA    12.3     555     135    
MON 00Z 16-NOV  0.01    0.00    0.01    0.00      RA    10.3     556     135    
MON 03Z 16-NOV  0.01    0.00    0.01    0.00            10.2     557     135    
MON 06Z 16-NOV  0.01    0.00    0.01    0.00      RA    10.7     556     134    
MON 09Z 16-NOV  0.19    0.00    0.19    0.00      RA     8.0     556     134    
MON 12Z 16-NOV  0.56    0.00    0.56    0.00      RA     8.7     555     133    
MON 15Z 16-NOV  0.69    0.00    0.69    0.00      RA     9.0     557     134    
MON 18Z 16-NOV  1.16    0.00    1.16    0.00      RA     8.7     558     134    
MON 21Z 16-NOV  1.39    0.00    1.39    0.00      RA     9.5     559     135    
TUE 00Z 17-NOV  1.70    0.01    1.69    0.00      RA    10.6     560     136    
TUE 03Z 17-NOV  1.70    0.01    1.69    0.00      RA    11.8     561     136    
TUE 06Z 17-NOV  1.74    0.04    1.70    0.00      RA    12.6     562     137    
TUE 09Z 17-NOV  1.79    0.08    1.70    0.00      RA    14.1     563     137    
TUE 12Z 17-NOV  1.97    0.23    1.73    0.00      RA    15.1     563     137    
TUE 15Z 17-NOV  2.19    0.25    1.93    0.00      RA    16.1     565     137    
TUE 18Z 17-NOV  2.54    0.29    2.24    0.00      RA    16.7     566     138    
TUE 21Z 17-NOV  2.58    0.29    2.28    0.00      RA    17.7     567     138    
WED 00Z 18-NOV  2.67    0.29    2.38    0.00      RA    17.6     567     138    
WED 03Z 18-NOV  2.96    0.30    2.67    0.00      RA    17.1     566     138    
WED 06Z 18-NOV  4.52    0.32    4.20    0.00      RA    17.0     566     138    
WED 09Z 18-NOV  6.18    0.33    5.85    0.00      RA    17.1     566     138    
WED 12Z 18-NOV  9.23    0.35    8.88    0.00      RA    17.1     566     138    
WED 15Z 18-NOV 10.48    0.35   10.12    0.00      RA    17.6     566     138    
WED 18Z 18-NOV 12.62    0.39   12.23    0.00      RA    18.3     567     139    
WED 21Z 18-NOV 13.78    0.48   13.31    0.00      RA    18.9     568     139    
THU 00Z 19-NOV 16.30    0.70   15.60    0.00      RA    19.2     568     139    
THU 03Z 19-NOV 17.71    0.78   16.93    0.00      RA    19.4     569     139    
THU 06Z 19-NOV 20.06    1.06   19.01    0.00      RA    19.2     567     139    
THU 09Z 19-NOV 21.22    1.40   19.81    0.00      RA    19.6     568     139    
THU 12Z 19-NOV 22.76    1.84   20.92    0.00      RA    16.4     565     138    
THU 15Z 19-NOV 22.76    1.84   20.92    0.00            13.5     561     136    

 

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