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Jan 4th 2018 Fish Bomb


Rjay

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18 minutes ago, snowman19 said:

The NAM is a huge outlier right now. How many times have we seen the NAM have these off the wall runs just before a storm then back way down to reality? Watch the 12z run flip. I think the 0z Euro/EPS is the closest to reality tomorrow here. The Euro is not going to be that far off this close in

The Euro has blew chunks this winter

Everyone discounted the Nam before and got burned in 2016.

SREF shifted west

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3 minutes ago, snowman19 said:

The operational Euro uses 4DVAR, its resolution is very good for a global model. In fact, we have seen it school mesoscale models on a couple of occasions in the past. It’s extremely unlikely that the Euro is way off this close to the event. It’s had the same solution for tomorrow for several runs now 

The Euro has had some tremendous issues or "late to the party" situations over the last several winters.  It's overall a tremendous model and tends to do very very well synoptically, but my confidence in it's performance during the winter and with EC events has been shaken to a fair degree.  

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5 minutes ago, snowman19 said:

The operational Euro uses 4DVAR, its resolution is very good for a global model. In fact, we have seen it school mesoscale models on a couple of occasions in the past. It’s extremely unlikely that the Euro is way off this close to the event. It’s had the same solution for tomorrow for several runs now 

No it hasn't

It has been trended west everyday and the Euro can be way off close to an event.

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1 minute ago, Ericjcrash said:

All factual.

All weenie rationalization. IMO the nmb members being pumped is a great sign so I agree with ulster.

Yes sir

9z SREF

.50 line is just passed NYC to the west

.75 line starts near the Brooklyn / Queens border

1.00 line is in central LI

More than 1.00 line is in eastern LI

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1 hour ago, weatherpruf said:

I seem to remember the big 2/6/10 storm that stopped short of us wound up throwing huge amounts back to Pittsburgh which I don't remember being in the mix originally....but I could be"misremembering"

Some accumulations from that storm:

Atlantic City: 18.2”
Baltimore: 25.0”
New York City: Trace
Newark: 0.4”
Philadelphia: 28.5”
Washington, DC: 17.8”

 

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5 minutes ago, bluewave said:

The 0Z Euro underestimated the NW extent of the heavier convection over Northern Florida on the latest radar image. It had the heaviest convection further SE.

0z Euro forecast

5a4cdd77a9f48_Screenshot2018-01-03at8_36_22AM.png.b3c272a60dbbfda1d10202416c6cadeb.png

Current radar

southeast.gif.2ad2ac0ef68a45cee88fef6d2b984951.gif

 

 

 

 

 

A possible early "win" for the NAM. Still, much more remains to play out with the evolution of this highly complex and dynamic system. It will be interesting to see if the 12z NAM corrects back east or maintains a solution similar to the 6z run.

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1 minute ago, donsutherland1 said:

Some accumulations from that storm:

Atlantic City: 18.2”
Baltimore: 25.0”
New York City: Trace
Newark: 0.4”
Philadelphia: 28.5”
Washington, DC: 17.8”

 

Yea the infamous virga storm. I was in disbelief for hours after seeing heavy precip hit what seemed to be a titanium wall. Even more excruciating than Jan 2015.

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5 minutes ago, donsutherland1 said:

A possible early "win" for the NAM. Still, much more remains to play out with the evolution of this highly complex and dynamic system.

What you are seeing over northern Florida could be melting snowflakes aloft.  I would not be too quick to classify that as convection.  The 8am obs are below.  Many reports of frozen precip down there this morning.

FLORIDA REGIONAL WEATHER ROUNDUP
NATIONAL WEATHER SERVICE TAMPA BAY RUSKIN FL
800 AM EST WED JAN 03 2018

NOTE: "FAIR" INDICATES FEW OR NO CLOUDS BELOW 12,000 FEET WITH NO
SIGNIFICANT WEATHER AND/OR OBSTRUCTIONS TO VISIBILITY.

FLZ001>010-012>015-112-114-115-031400-
PANHANDLE FLORIDA

CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS
PENSACOLA      CLOUDY    32  18  56 N9        30.27F WCI  24
PENSACOLA NAS  MOCLDY    32  18  56 N7        30.25F WCI  26
MILTON NAS     CLOUDY    30  19  63 N6        30.27  WCI  24
CRESTVIEW      MOCLDY    30  18  60 N6        30.28S WCI  24
DUKE FIELD     MOCLDY    29  18  65 N5        30.25S WCI  23
VALPARAISO     MOCLDY    30  16  54 N7        30.25S WCI  23
MARY ESTHER    CLOUDY    31  19  61 N9        30.25F WCI  22
PANAMA CITY    FAIR      30  14  51 NW8       30.23F WCI  22
TYNDALL AFB    PTCLDY    32  11  41 NE8       30.22F WCI  25
APALACHICOLA   MOCLDY    33  14  45 N8        30.22R WCI  26

STATION/POSITION SKY/WX   TEMP    WIND        PRES    WAVE   SWELL
                          AIR SEA DIR/SP/G            HT/PER HT/PER
                          (F)     (DEG/KT/KT) (MB)    (FT/S) (FT/S)
29.2N   88.2W              45     340/ 16/ 21 1024.8
28.8N   86.0W              49 71  350/ 12/ 17 1022.3R   4/ 6   2/ 6
PANAMA CITY BEAC           31 57  360/  9/ 11 1024.1F
TOWER C                    37     360/ 15/ 17 1022.8S

$$
FLZ011-016>038-118-127-128-134-139-239-031400-
NORTH FLORIDA

CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS
MARIANNA       CLOUDY    29  11  47 N5        30.25S WCI  24
TALLAHASSEE    LGTSLEET  30  22  72 VRB6      30.19F WCI  24
PERRY          MIX PCPN  32  30  91 NW7       30.21R WCI  26
LIVE OAK       CLOUDY    30  30 100 CALM      30.18R
CROSS CITY     MIX PCPN  32  32 100 NW13G20   30.21R FOG     WCI  22
LAKE CITY      LGT SNOW  32  30  93 N6        30.12S WCI  26
GAINESVILLE    MIX PCPN  32  30  92 N9        30.10F FOG     WCI  24
WILLISTON        N/A     36  34  93 W7G14     30.09R FOG     WCI  30
PALATKA        LGT RAIN  37  37 100 N10       30.04F WCI  30
MAYPORT NAS    LGT RAIN  36  35  96 N9        30.07F WCI  29
JACKSONVILLE   LGT RAIN  33  30  88 N9        30.09F WCI  25
JAX NAS        CLOUDY    35  33  92 N16       30.09F WCI  25
JAX CECIL      LGT RAIN  32  32 100 N12       30.10S FOG     WCI  23
ST AUGUSTINE   LGT RAIN  46  45  96 N12       30.05F FOG     WCI  41
PALM COAST     RAIN      52  50  93 N12G23    30.00F

 

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2 minutes ago, Tatamy said:

What you are seeing over northern Florida could be melting snowflakes aloft.  I would not be too quick to classify that as convection.  The 8am obs are below.  Many reports of frozen precip down there this morning.


FLORIDA REGIONAL WEATHER ROUNDUP
NATIONAL WEATHER SERVICE TAMPA BAY RUSKIN FL
800 AM EST WED JAN 03 2018

NOTE: "FAIR" INDICATES FEW OR NO CLOUDS BELOW 12,000 FEET WITH NO
SIGNIFICANT WEATHER AND/OR OBSTRUCTIONS TO VISIBILITY.

FLZ001>010-012>015-112-114-115-031400-
PANHANDLE FLORIDA

CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS
PENSACOLA      CLOUDY    32  18  56 N9        30.27F WCI  24
PENSACOLA NAS  MOCLDY    32  18  56 N7        30.25F WCI  26
MILTON NAS     CLOUDY    30  19  63 N6        30.27  WCI  24
CRESTVIEW      MOCLDY    30  18  60 N6        30.28S WCI  24
DUKE FIELD     MOCLDY    29  18  65 N5        30.25S WCI  23
VALPARAISO     MOCLDY    30  16  54 N7        30.25S WCI  23
MARY ESTHER    CLOUDY    31  19  61 N9        30.25F WCI  22
PANAMA CITY    FAIR      30  14  51 NW8       30.23F WCI  22
TYNDALL AFB    PTCLDY    32  11  41 NE8       30.22F WCI  25
APALACHICOLA   MOCLDY    33  14  45 N8        30.22R WCI  26

STATION/POSITION SKY/WX   TEMP    WIND        PRES    WAVE   SWELL
                          AIR SEA DIR/SP/G            HT/PER HT/PER
                          (F)     (DEG/KT/KT) (MB)    (FT/S) (FT/S)
29.2N   88.2W              45     340/ 16/ 21 1024.8
28.8N   86.0W              49 71  350/ 12/ 17 1022.3R   4/ 6   2/ 6
PANAMA CITY BEAC           31 57  360/  9/ 11 1024.1F
TOWER C                    37     360/ 15/ 17 1022.8S

$$
FLZ011-016>038-118-127-128-134-139-239-031400-
NORTH FLORIDA

CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS
MARIANNA       CLOUDY    29  11  47 N5        30.25S WCI  24
TALLAHASSEE    LGTSLEET  30  22  72 VRB6      30.19F WCI  24
PERRY          MIX PCPN  32  30  91 NW7       30.21R WCI  26
LIVE OAK       CLOUDY    30  30 100 CALM      30.18R
CROSS CITY     MIX PCPN  32  32 100 NW13G20   30.21R FOG     WCI  22
LAKE CITY      LGT SNOW  32  30  93 N6        30.12S WCI  26
GAINESVILLE    MIX PCPN  32  30  92 N9        30.10F FOG     WCI  24
WILLISTON        N/A     36  34  93 W7G14     30.09R FOG     WCI  30
PALATKA        LGT RAIN  37  37 100 N10       30.04F WCI  30
MAYPORT NAS    LGT RAIN  36  35  96 N9        30.07F WCI  29
JACKSONVILLE   LGT RAIN  33  30  88 N9        30.09F WCI  25
JAX NAS        CLOUDY    35  33  92 N16       30.09F WCI  25
JAX CECIL      LGT RAIN  32  32 100 N12       30.10S FOG     WCI  23
ST AUGUSTINE   LGT RAIN  46  45  96 N12       30.05F FOG     WCI  41
PALM COAST     RAIN      52  50  93 N12G23    30.00F

 

That's correct. That's why I used possible, as I hadn't had a chance to look at the observations at the time. FWIW, I still think the 6z NAM is an outlier and would not be surprised to see the 12z run move into better agreement with the RGEM and some of the other guidance. We'll soon see.

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7 minutes ago, UlsterCountySnowZ said:

Somehow I think Nam will be West...southern stream much better yet again, overall trof axis is better, with better heights/PNA Ridge 

if you toggle between the 15hr at 12Z vs. the 21hr at 6Z you will see everything is slightly NE so far. Not saying that will continue, just stating the facts

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