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January 3-4 Storm Thread part II


rduwx

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People need to remember to look at 5H and dynamics more than QPF fields at this range. Get a neutral to negative tilt around the LA to Pensacola area and there will be qpf more than just along the coast. Models don’t handle those dynamics very well this far out but it’s why you see some of the better globals like the UK and Euro more inland with the precip vs the GFS and CMC. Expect a much wetter trend as we get within 48 hours imo. 

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4 minutes ago, snowlover91 said:

People need to remember to look at 5H and dynamics more than QPF fields at this range. Get a neutral to negative tilt around the LA to Pensacola area and there will be qpf more than just along the coast. Models don’t handle those dynamics very well this far out but it’s why you see some of the better globals like the UK and Euro more inland with the precip vs the GFS and CMC. Expect a much wetter trend as we get within 48 hours imo. 

Even best case scenario, barring major shifts west, I think the precip edge is likely RAH to Orangeburg and East. Coastals don't work for CLT and West, 99.989/100! Think 95 East, gets crushed, if trends hold 

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Just now, Snovary said:

Nobody should really be that surprised to see this trend given the past few years, also the nam has been the model that tends to show its hand first. 

nam_mslp_pcpn_frzn_us_fh66_trend.gif

Well, we almost had a snow storm at the coast. Will likely be another sleet fest if NAM is right. Classic stuff. Congrats may be in order lol. 

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6z NAM at 48 hrs was slightly more amped than the 00z NAM, especially along the 546DM  contour.    It shifted the precip 100 miles west.  546dm seems to be the area of the jet east coast snowstorms are most sensitive too.

 

Edit. ALSO 250mb Jet streak in the nrn US was more N-S oriented than prior runs at 36hrs.  Could not see deduce this at all on H5 maps, they seemed less amped until 48hrs.

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8 minutes ago, Amped said:

6z NAM at 48 hrs was slightly more amped than the 00z NAM, especially along the 546DM  contour.    It shifted the precip 100 miles west.  546dm seems to be the area of the jet east coast snowstorms are most sensitive too.

 

Edit. ALSO 250mb Jet streak in the nrn US was more N-S oriented than prior runs at 36hrs.  Could not see deduce this at all on H5 maps, they seemed less amped until 48hrs.

Do you think this will be a trend or do you think the NAM is overdoing it? 

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