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The NOGAPS Thread


atownwxwatcher

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I agree with the progressive biases you mentioned; Im just pointing out the inconsistency of the models and how much theyve waffled around lately. Time and again, what's worked out best has been a compromise track between the western and eastern outliers-- which is usually the case in most winters. Add to that the fact that the ensembles have often done better than the OP in sniffing out trends and that's how we start to build a consensus. It's not a smart idea to latch onto any one model, rather look at the composite to figure out the signal.

BTW that slower signal is also what Im counting on, as that gives the next Arctic high to build from the NW.

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Just thought i would post this in here...Many say that the NOGAPS is not looked at or referred to by HPC

EXTENDED FORECAST DISCUSSION

NWS HYDROMETEOROLOGICAL PREDICTION CENTER CAMP SPRINGS MD

140 PM EST SUN JAN 23 2011

VALID 12Z WED JAN 26 2011 - 12Z SUN JAN 30 2011

GUIDANCE OFFERS A COMPLICATED SHORT RANGE MESS INTO MIDWEEK WITH

MUCH ABOVE NORMAL FORECAST SPREAD WITH POTENTIAL SRN STREAM STORM

DEVELOPMENT AND ASSOCIATED HEAVY PCPN POTENTIAL OUT FROM THE SERN

US AND UP/OFF THE EAST COAST INTO THU. UNCERTAINTY WITH UPSTREAM

KICKER ENERGY...CONVECTIVE FOCUS...AND NRN STREAM INTERACTION HAS

LEAD TO SIGNIFICANT TIMING AND SUPPRESSION ISSUES WITH THE STORM.

THE OO UTC ECMWF/UKMET/CANADIAN AND TO A LESSER EXTENT THE 00 UTC

GFS CONTINUE TO FAVOR A DEEPENING LOW TRACK MORE ON THE WESTWARD

PORTION OF THE ENTIRE SOLUTION ENVELOPE IN STARK CONTRAST TO THE

MORE SUPPRESSED 00 UTC NOGAPS AND 06 UTC GUIDANCE INCLUDING THE

NAM/DGEX AND ESPECIALLY 06 UTC GFS THAT WAS LESS PROGRESSIVE WITH

BOTH SRN STREAM KICKER ENERGY AND LEAD LOW DEVELOPMENT.

Apparently they do thumbsupsmileyanim.gif

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12 Z NOGAPS @ 84 hrs compared to 18 Z NAM @ 78 hrs

Notice how a progressive SE Biased model is slightly more west then the NAM @ the same hour...

Again and indication that the NAM is too far to the east....

Look for the NAM to get a handle on this at about 48 hrs and under..till then its going to be lost..

96 hours...progressive bias again applied and yet... about the same location as the 12 Z ECM @ 96 hrs...

Overall I expect a further west solution then what the ECM shows @ 96 hrs....

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