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Pre-Thanksgiving Sou'easter Observation and Nowcasting Thread


IsentropicLift

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  On 11/26/2013 at 9:46 PM, Rjay said:

Maybe hes not basing it off models. Maybe he knows from experience most storms end before the models show they end. But I'm not him.

Around 4-5:00 tomorrow afternoon is a reasonable estimate, and yes that does tend to happen.

 

The NAM and GFS are more like 8-9.

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  On 11/26/2013 at 9:55 PM, YanksFan27 said:

18z RGEM might be the wettest model run we've had yet. That's like 3-4" of rain in less than 12 hours for the CT coast.

 

18_054_R1_north@america_I_4PAN_CLASSIC@0

 

18_054_R1_north@america_I_4PAN_CLASSIC@0

I'm still thinking it will be a wet outcome for us-I'd say on average 2.5-3.5" of rain. The low level jet means business and the trough is going negative tilt. There will be a very heavy line of rain which will cross the whole area but tend to train for several hours.

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  On 11/27/2013 at 2:49 AM, Absolute Humidity said:

Maybe a little backside love on the 00z NAM 2nd wave?

My brain might be inventing things but I'm almost positive that one of the NAM's major victories last year was the forecasting of a spoke of low pressure from a departing cyclone that, for some here, brought more snow than the actual "event" preceding it.

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  On 11/27/2013 at 3:08 AM, Will - Rutgers said:

My brain might be inventing things but I'm almost positive that one of the NAM's major victories last year was the forecasting of a spoke of low pressure from a departing cyclone that, for some here, brought more snow than the actual "event" preceding it.

You may be referring to Mar 7-8th retro grading event. I think it was the GFS that sniffed it out before the Euro, could have been NAM but that model was hopelessly wet last year.

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  On 11/27/2013 at 3:28 AM, jm1220 said:

Precip is gone here before any snow. Remember, that's precip that fell over the preceding 6 hours. The second wave just prolongs the rain along the coast.

Yes this is known. About half of that looks frozen, at least at H850, hence the words, a "little" love.

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