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Nov 27 2012 Snow/Rain/Slop OBS and Nowcasting


earthlight

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I wouldn't say a lot more. Parents melted down 0.69" from the 0.3" of snow (actually it melted all on its own). KNYC is up to 0.52". About 25% less at KNYC. Maybe some places north of Ewing got even higher total precip, we won't know til tomorrow morning most likely.

.45 liquid (heated tipping gauge probably loss some to evaporation to) resulted in 4 inches of snow here with temps at 33-33.5

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If ya got snow goggles on, you won't listen. Or is it that if you have snow muffs on, you won't hear. I can never get these sayings right.

Your forecast was definitely correct for a (lack) of snow in the area...as mine was wrong...but it was most certainly not a 100% clear cut forecast....Upton themselves had the entire area in snow today with their late night forecast last night before again revising it this morning...and it certainly was not like a snow forecast was entirely bereft of model support...even in the middle of the event (12 z NAM, 12 z RGEM)! It is not as if those who forecast snow were off by 150 miles or 3000 feet elevation...forecasting is as much art as science. Having moved to the area in 1971...I know that *many* of these events can go either way...and before you say they mostly go against....think how many snowstorms took place with the temperature between 30 F and 32 F....and how few take place with the temperature under 25 F.

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I guess surface temps are more important in certain situations than 850 temps. I clearly thought the area was going to be all snow based off the 850's. Lesson learned for me.

Will someone please bet me it will only take 1 storm for him to jump up and down next time he sees an 850 line on a model run strung south or east of precip.

As a matter of fact , dont change .....Cause i actually look forward to it soemtimes .

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Your forecast was definitely correct for a (lack) of snow in the area...as mine was wrong...but it was most certainly not a 100% clear cut forecast....Upton themselves had the entire area in snow today with their late night forecast last night before again revising it this morning...and it certainly was not like a snow forecast was entirely bereft of model support...even in the middle of the event (12 z NAM, 12 z RGEM)! It as not as if those who forecast snow were off by 150 miles or 3000 feet elevation...forecasting is as much art as science. Having moved to the area in 1971...I know that *many* of these events can go either way...and before you say they mostly go against....think how many snowstorms took place with the temperature between 30 F and 32 F....and how few take place with the temperature under 25 F.

No you're right, there were definitely some indicators that suggested I would be wrong and you would be right. I do, however, think the balance was more in my forecast's favor. It was really close. I nailed the forecast back home with a coating verifying as 0.3". I hedged that bet though by mentioning if a heavy band set up right over them, they could eek out 1-2". And that ended up being less than 10 miles away.

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No you're right, there were definitely some indicators that suggested I would be wrong and you would be right. I do, however, think the balance was more in my forecast's favor. It was really close. I nailed the forecast back home with a coating verifying as 0.3". I hedged that bet though by mentioning if a heavy band set up right over them, they could eek out 1-2". And that ended up being less than 10 miles away.

And I mention all of this just to point out that I was less than 10 miles away from being wrong back home. Which is a razor thin margin of error.

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It also just depends on where the bands set up...for this event, NJ got a lot more precip than NYC and north. We only had .5" snow here but it wasn't because of temperatures. We were around 33F but we only had drizzle/flurries for much of the afternoon.

Precip was a little further north than expected as well... Plenty of areas up here especially above 700' received 3-5" where 24-48 hrs ago most thought flurries at best for the area.

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I do, however, think the balance was more in my forecast's favor.

Yes, I agree...probably like 65 -35...but when you enjoy the snow as much as I do...you *always* expect the .350 hitter to get a hit. smile.png

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Going only off the p-type graphics from last night, it showed mostly rain for my location. But I'm not surprised the snow map was accurate...the recent upgrade has made the rgem the best short term model by far.

It's the best from hours 12-24, I've noticed. It's weird.

For hours 0-12 it's pretty bad, as we saw with today's 12z run. Anything past hour 24, it's completely useless.

It's also useless for any storm that involves heavy convection. Whether it be a tstorm or a strong coastal.

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I wouldn't say a lot more. Parents melted down 0.69" from the 0.3" of snow (actually it melted all on its own). KNYC is up to 0.52". About 25% less at KNYC. Maybe some places north of Ewing got even higher total precip, we won't know til tomorrow morning most likely.

I did a bit better, 0.60" for 1.4".

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Yeah, you can't just look at one level and say "it will snow" or "it will rain". Gotta look at the whole column. If the lowest 1000 feet of the sounding or more is progged to be above freezing, you will probably have real trouble accumulating anything.

Lucky for incredible intensity for a while and really big, pelting flakes. Was able to accumulate, despite a low temp of 33.2 for the day.

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Can anyone else verify approximately 4" in Hillsborough, NJ? It seems like an outlier (but I'm not a liar)!

A little south of there in Skillman I measured 2.7" and that was an hour after it ended so some compaction may have factored in. 4" is certainly possible there, especially on some of the higher elevations.

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At work in East Brunswick we got a coating-.5 inch and at my home in North Brunswick it looked closer to 1 inch. They are towns next to each other. I am prob 6 or 7 miles east from the hillsborough area which someone reported 3 inches.

Hillsborough is a large Township, it goes west nearly to Flemington. In the western parts the elevations go up to 500'+. Night and day in marginal setups compared to East Brunswick (where I grew up).

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