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Wx: WINTER 2011/2012 Forecasts


GSXRAntwon

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Cleared. People on other sites are saying 1-2" today and 1-3" tomorrow? Any truth to this in the models?

 

about as safe as it can get. once again, amounts higher north of the city tomorrow. My thought with the mixing is that theres going to be a 2" layer of snow on the ground, which will raise the temps of the air, much like ice cubes in a glass of water. Models generally dont understand this.

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Jeff, if I am reading that model right, it says possible 3 inches of snow tomorrow. Why are the weather idiots on tv saying just an inch or so with mixing rain. Why are they not seeing the same models as you are showing?

 

probably because they know more than i. im just an amatuer. plus, if they overforecast it makes them looks worse than under forecasting.

 

I just got home from class, lemme take a look at the latest models

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basically it seems the forecasters are favoring the NAM model.

This is a NAM map. The blue line represents the freezing line at 10,000 feet. It shows the 10k freezing line being up near the OH/MI border. Meaning, its raining at 10k feet here in central ohio since its warmer than 32.

http://i.imgur.com/RFCnG.gif

Now, below is a temperature map for the same hour at the surface, as in the ground. It shows the freezing temp being the around i70 line. So in that space where the surface temp is less than 32, but the upper atmosphere temp is above freezing, it rains then freezes as it hits the ground.

http://i.imgur.com/XvGkL.gif

basically between i70 and i80 there should be an ice accumulation according to the NAM

 

Now, The GFS is a different story. It shows the 10k freezing line at 70.

http://i.imgur.com/XC3r1.gif

and the surface freeze line from dayton to WV/PA line. So according to the GFS, we would stay all snow, maybe a very brief period of sleet.

http://i.imgur.com/AC9TI.gif

 

The ECMWF (euro) never shows the 10k (or 850mb) temp rising north of 70;

http://i.imgur.com/pMTA9.gif

http://i.imgur.com/4chzM.gif

i had to post 2 images because it only goes in 24 hour increments.

 

I dont understand why their hugging the NAM, but whatever. the 6z nam is running now, so we;ll see what it says

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Yea I saw it after I wrote it lol.

 

Probability of Freezing rain/Ice:

http://www.hpc.ncep.noaa.gov/wwprobs/zr_probabilities.php

 

Doesnt look like much rain/ice probability

 

Anything could happen at this point. the NWS has waldo (just north of delaware city) getting 3-5 tomorrow night. thats only 25 miles from the top of the belt.

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Things are in our favor. point and click for Delaware city has them down for 2-4 tonight. Thats a combo of the GFS and the NAM. If the GFS were to verify, hold onto your hats. That thick yellow line is the 32* surface temp line

%5Bimg%5Dhttp%3A//i371.photobucket.com/albums/oo160/jeffro1265/Weather/Untitled.jpg[/img]

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Did you guys get anything up there? around 70/75 looked like 1in ish when i was up there last night..

 

here in dayton we got a dusting.

 

I want snow!

 

East of Columbus we had ice under about 1in of snow. I'll take 6in of snow if that means 0 ice

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