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February 19-20 Major Winter Storm Threat


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18 minutes ago, wncsnow said:

Moisture just weakens as it hits the Apps.

There was a storm here in Jan of 2018 which had a similar projected trajectory as this one. The models struggled with the lee side up until right before the storm and I believe the HRRR was the first to show it, but we developed a lee side low which enhanced the moisture and actually had a decent storm here. I'll try to find the map on it.

This was the storm...

 

https://products.climate.ncsu.edu/weather/winter/event/?e=627

https://climate.ncsu.edu/blog/2018/01/rapid-reaction-seasons-third-snow-did-things-its-own-way/

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ICON would feed families. Coastal bomb with banding from the gods. Also no issues with thermals and it slows down plus throws in some light snow with the ULL passage like the CMC. It also juiced up further west (sorry foothill area, still blanked). Great run and a HECS

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Even though there is a precip min back here in the west on the ICON, the trend here over the past few runs suggest that the moisture is slowly progressing back to the sw a little more each run and the low pressure over the gulf is further sw each run and a little slower. I would think over time this progression would lead to more phasing of the low over the gulf and we would see precip totals ramp back up more in the west. The GFS is slowly making that same progression, it's not much but over the next three days it might make a big difference. Just my .02

 

icon_mslp_pcpn_frzn_us_fh69_trend.gif

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