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January 26-27 Snowstorm Disco V


Baroclinic Zone

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NCEP diagnostic, they dont believe the NAM had any real errors:

MODEL DIAGNOSTIC DISCUSSION

NWS HYDROMETEOROLOGICAL PREDICTION CENTER CAMP SPRINGS MD

1004 AM EST TUE JAN 25 2011

VALID JAN 25/1200 UTC THRU JAN 29/0000 UTC

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

INGEST...

12Z NAM EVALUATION

ANY INITIALIZATION ERRORS WITH THE NAM DO NOT APPEAR TO

SIGNIFICANTLY IMPACT ITS SOLUTION.

I should mention that El Paso wasn't in the NAM package, but will be for the GFS. Same with RIW/Wyoming.

EPZ/72364 - MISSING PART B.. IN FOR THE GFS.

RIW/72672 - NOT AVAILABLE..IN FOR THE GFS.

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Just looking back at the ECMWF is has been nearly the same in intensity and location for the last 5 runs. That's pretty consistent. The last time and the run before that it was slightly SE, like the GFS is now, that was back on the 22nd with the 12z run.

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NCEP diagnostic, they dont believe the NAM had any real errors:

MODEL DIAGNOSTIC DISCUSSION

NWS HYDROMETEOROLOGICAL PREDICTION CENTER CAMP SPRINGS MD

1004 AM EST TUE JAN 25 2011

VALID JAN 25/1200 UTC THRU JAN 29/0000 UTC

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

INGEST...

12Z NAM EVALUATION

ANY INITIALIZATION ERRORS WITH THE NAM DO NOT APPEAR TO

SIGNIFICANTLY IMPACT ITS SOLUTION.

I should mention that El Paso wasn't in the NAM package, but will be for the GFS. Same with RIW/Wyoming.

EPZ/72364 - MISSING PART B.. IN FOR THE GFS.

RIW/72672 - NOT AVAILABLE..IN FOR THE GFS.

We get your point, move on.

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This one is easy - believe the Euro and the great mets here. Consistency for the king FTW.

This is why I actually come to this forum. I barely know whats going on here, but I am just starting to learn how to read some of the models after almost 2 years of following. I mainly come here for the totals and discussion during the storm because I am a snow buff. It's cool to see all the different meteorologists perspectives on this site.

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A tick colder through 24, a slight shift east that may be transient. Def split in the moisture but the good stuff is just offshore Jersey.

Subtle shifts past 3 runs of GEFS anomaly winds at 850 off to the ESE. Still looks like a moderate to heavy impact for LI and in general along and east of I91. Some light accumulations back to the HV south of Albany, Berkshires and Litchfield Hills too. Slight chance for moderate amts across NW CT. PWATS also way more east. A broad area of +1 to +2 from HV east across New England. System MAY not be too wet even for areas of New England where the greatest impacts will be.

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