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0z Model Discussion 02/13/14


HailMan06

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MODEL DIAGNOSTIC DISCUSSION

NWS WEATHER PREDICTION CENTER COLLEGE PARK MD

1203 AM EST THU FEB 13 2014

VALID FEB 13/0000 UTC THRU FEB 16/1200 UTC

...SEE NOUS42 KWNO (ADMNFD) FOR THE STATUS OF THE UPPER AIR

INGEST...

...AN EVALUATION OF THE 00Z NAM/GFS ALONG WITH PRELIMINARY

PREFERENCES/FORECAST CONFIDENCE...

THERE DID NOT APPEAR TO BE ANY INITIALIZATION ERRORS WITH THE 00Z

NAM/GFS DEEMED SIGNIFICANT ENOUGH TO IMPACT THEIR FORECASTS.

...UPPER TROF BECOMING NEGATIVELY-TILTED OVER THE COASTAL

CAROLINAS BY 13/1800Z...

...STRENGTHENING COASTAL LOW LIFTING ALONG THE EAST COAST...

PRELIMINARY PREFERENCE: BLEND OF THE 00Z NAM/12Z ECMWF

FORECAST CONFIDENCE: AVERAGE

CURRENT WATER VAPOR IMAGERY DEPICTED A STRONG SHORTWAVE CROSSING

THE DEEP SOUTH WITH THE IMPULSE GRADUALLY LIFTING NORTHWARD IN

RESPONSE TO RIDGING DOWNSTREAM OVER THE WESTERN ATLANTIC. BY

14/0000Z...THE 12Z UKMET/ECMWF/ECMWF ENSEMBLE MEAN ALL SHOW A

CLOSED 534-DM LOW CROSSING THE DELMARVA PENINSULA. CONTINUAL

DEEPENING IS FORECAST ONCE THE SYSTEM MOVES UP INTO LOWER NEW

ENGLAND BY THURSDAY NIGHT. WITH REGARD TO TIMING...THE 00Z NAM/21Z

SREF MEAN AND 12Z ECMWF/ECMWF ENSEMBLE MEAN ARE A BIT SLOWER WHILE

THE 00Z GFS/12Z CMC ARE QUICKER MOVING THE ENERGY NORTHWARD.

LOOKING AT THE SURFACE...AS EXPECTED...THE 12Z CMC ENSEMBLE

MEMBERS ARE FURTHER TO THE NORTH WITH MORE SCATTER AMONGST THE

MEMBERS. THE 12Z ECMWF ENSEMBLE MEMBERS ARE MORE TOWARD THE SOUTH

AND WEST WITH MUCH MORE CONSOLIDATION NOTED IN THE PAST 2 PLOTS.

DO LIKE THE CONTINUITY IT HAS BEEN SHOWING SO WILL INCORPORATE ITS

SOLUTION INTO THE PREFERENCE. THE 00Z NAM REASONABLY FOLLOWED THE

PATH ALOFT SUGGESTED BY THE 12Z ECMWF SO WILL BLEND THE TWO HERE.

They went with the old Double E Rule, sweet lol!

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Well, I'm heading off a bit early and trusting the Euro to not do anything crazy in my absence. I'd rather not see it at all. I've learned quite a bit from tracking this storm, and amazingly, that seems to happen with every weather event I observe. This storm will be the culmination of thousands of posts, hundreds of model runs, and a million different opinions; still, the snowflakes will fall as they will, which is rather humbling. I've compiled a few of my favorite real-time images from tonight, in a gallery here: http://imgur.com/a/AIqFx. Hope somebody thinks they're as cool as I do. Night everyone.

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We just had the best Euro run of the entire time tracking this system, and it just started snowing.

Colder with more precipitation on the front end, better CCB behind it.

Haha classic! I'm very impressed by This system. Someone will jackpot north of 20. Who remains to be seen. Likely someone just north and west of NYC

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We just had the best Euro run of the entire time tracking this system, and it just started snowing.

Colder with more precipitation on the front end, better CCB behind it.

Wow.

 

Does it lose any skill this close in? What a ride we're in for...

 

I hate bringing up 1/26/11, but tonight's runs are giving me those kind of chills.

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