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Next weeks Storm Threat and DT's Jan 21-22 Facebook threat


Ji

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Here ya go, Ji. After an early week snow, caked in ice, and a frigid stretch, then:

post-116-0-64228600-1295066506.gif

See reverse psycholgy worked. After JI called the run hpeless, a troff appeared out of nowhere and suddenly turned into a HECS. I think there is another threat in this period, the GWO MJO and NAO are all somewhat favorable. Hopefully it doesn't screw DC again.

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We don't get legit ice storms very often. Ice is the only thing we in the MA hype more than wind. Color me super skeptical on the ZR/IP threat.

i agree. if I had a dollar for everytime I've heard we are going to get an ice storm, or prepare to lose to power due to ice, or don't drive cause of ice, I would be rich.. It seems like these storms almost always underperform.

And even if there is some accumulating ice, it never seems nearly as bad as it was suppose to be/could have been. I think part of this is due to urbanization, and I am including Loudoun County in that. But, after this boring winter, I would gladly take what the GFS is showing.

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Anyone remember a storm in January or February of 2004, maybe 03, that was suppose to be a crippling multi-day ice storm around here. There was so much hype about it. It was suppose to be extended, 3 to 4 day affair. After all the hype and build up, there was occassional freezing rain/drizzle mixed with snow at times for like 2 days in a row. But it never really seemed to amount to much, roads were basically fine, and no one lost power??

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i agree. if I had a dollar for everytime I've heard we are going to get an ice storm, or prepare to lose to power due to ice, or don't drive cause of ice, I would be rich.. It seems like these storms almost always underperform.

And even if there is some accumulating ice, it never seems nearly as bad as it was suppose to be/could have been. I think part of this is due to urbanization, and I am including Loudoun County in that. But, after this boring winter, I would gladly take what the GFS is showing.

Just look back in the newspaper articles-- there have certainly been freezing rain situations that were worse than forecast in the past few years in addition to the overforecasts that you seem to remember more.

Remember the Mixing Bowl ramps being completely shut down by ZR on Super Tuesday (2/08)? And then that evening upgrade to an Ice Storm Warning when it became apparent that the ZR was going to hold on for longer than originally forecast?

1/27-28/09 also stayed ZR longer than forecast. If you're looking for power outages, that's just going to be rare in our region, and I really don't remember multiple instances of warnings about preparing to lose power. The two most recent Ice Storm Warnings were justified---2/12/08 certainly accumulated 1/4" or more in many locations and 2/13/07 also did for the eastern portions of the region. The only reason the western part of the region didn't verify was because the sub-freezing layer was deeper than forecast and we got that 3" of sleet instead.

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I am really stoked up about this snowstorm next weekend - I can hardly wait to shovel my half inch of snow. I don't waste any of it - I am certain to pile up every last flake on the north side of my house.

By next Saturday night - I will be 4.5 inches on the season!!! I am going to stay up nights tracking this snowstorm!!! NO. SLEEP. TIL. BROOKLYN.!!!!!!!!!

HELL YEAH!!!!!!

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Am i using this map correctly? http://www.nco.ncep....fs_sl8_078l.gif

Thats the 1000-850mb thickness map. Since 1000mb is at the surface, it shows that there is a cold layer at the surface supporting FZRA. So am I correct to assume that the precip NW of that line if freezing rain?

Mean layer temperature is proportional to thickness, but you can't always ascertain exactly where the freezing line will set up at the surface based on that (forecasters typically use certain values for certain layers as guidelines). You'd really have to look vertical profiles, but I assumed they would in fact show FZRA north and west of 132 line (not sure how far NW it would start).

Having said that, the GFS sure has been advertising a CAD event setting up with potential for FZRA for a few runs now.....

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12 hr precip from hr 60-72. DCA probably has just turned to rain... the 2m temps are prob 32-33. IAD is still freezing rain

That may be true verbatim, but I'd take the surface temps with a grain of salt....the temps are close enough that it might be worth watching.

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