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Febuary 9-11 threat


Allsnow

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12z GFS bufkit has the three hour period ending at hr 171 with 13.6" for KPHL! Of course, 26:1 ratios really help. :lol:

110210/0300Z 159 17005KT 24.1F 0:1| 0.0|| 0.0 0.000|| 0.00 0.00|| 0.00 0.00|| 0.00 0| 0| 0

110210/0600Z 162 18006KT 25.0F SNOW 12:1| 0.1|| 0.1 0.012|| 0.01 0.00|| 0.00 0.00|| 0.00 100| 0| 0

110210/0900Z 165 09005KT 25.9F SNOW 11:1| 1.0|| 1.1 0.091|| 0.10 0.00|| 0.00 0.00|| 0.00 100| 0| 0

110210/1200Z 168 04010KT 25.7F SNOW 17:1| 3.5|| 4.7 0.213|| 0.31 0.00|| 0.00 0.00|| 0.00 100| 0| 0

----------------------------------------------+----++-------------++--------------++-------------++-----------+---+---

110210/1500Z 171 36018KT 23.9F SNOW 26:1|13.6||18.3 0.516|| 0.83 0.00|| 0.00 0.00|| 0.00 100| 0| 0

110210/1800Z 174 32017KT 26.8F SNOW 21:1| 2.3||20.6 0.110|| 0.94 0.00|| 0.00 0.00|| 0.00 100| 0| 0

110210/2100Z 177 30016KT 24.4F SNOW 14:1| 0.3||20.8 0.020|| 0.96 0.00|| 0.00 0.00|| 0.00 100| 0| 0

110211/0000Z 180 28014KT 18.3F 0:1| 0.0||20.8 0.000|| 0.96 0.00|| 0.00 0.00|| 0.00 0| 0| 0

http://www.meteor.iastate.edu/~ckarsten/cobb/cobb.php?model=gfs&site=kphl

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12z GFS bufkit has the three hour period ending at hr 171 with 13.6" for KPHL! Of course, 26:1 ratios really help. :lol:

110210/0300Z 159 17005KT 24.1F 0:1| 0.0|| 0.0 0.000|| 0.00 0.00|| 0.00 0.00|| 0.00 0| 0| 0

110210/0600Z 162 18006KT 25.0F SNOW 12:1| 0.1|| 0.1 0.012|| 0.01 0.00|| 0.00 0.00|| 0.00 100| 0| 0

110210/0900Z 165 09005KT 25.9F SNOW 11:1| 1.0|| 1.1 0.091|| 0.10 0.00|| 0.00 0.00|| 0.00 100| 0| 0

110210/1200Z 168 04010KT 25.7F SNOW 17:1| 3.5|| 4.7 0.213|| 0.31 0.00|| 0.00 0.00|| 0.00 100| 0| 0

----------------------------------------------+----++-------------++--------------++-------------++-----------+---+---

110210/1500Z 171 36018KT 23.9F SNOW 26:1|13.6||18.3 0.516|| 0.83 0.00|| 0.00 0.00|| 0.00 100| 0| 0

110210/1800Z 174 32017KT 26.8F SNOW 21:1| 2.3||20.6 0.110|| 0.94 0.00|| 0.00 0.00|| 0.00 100| 0| 0

110210/2100Z 177 30016KT 24.4F SNOW 14:1| 0.3||20.8 0.020|| 0.96 0.00|| 0.00 0.00|| 0.00 100| 0| 0

110211/0000Z 180 28014KT 18.3F 0:1| 0.0||20.8 0.000|| 0.96 0.00|| 0.00 0.00|| 0.00 0| 0| 0

http://www.meteor.ia...l=gfs&site=kphl

25.6 inches at Islip with peak ratios of 28:1 :lol:

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I don't want to be a debbie downer but here are my thoughts. I don't see this being a perfect setup. 1. the high situated over the northeast is weak, very weak and wouldn't be strong enough to keep the cold air locked. 2. the ridge axis out west argues for a hugger to inland track. 3. no negative nao so no feature to lock in a high pressure or keep the low as a coastal. 4. The way the gfs portrays right before that storm occurs with the cold is wrong. You have a high sliding off the mid atl coast with southerly winds ripping into the coastal plain, no way the 850s are that cold or surface temps.

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Epic shafting for the interior continues.........Here is Allentown - drops off dramatically as you head NW from there.

110210/0300Z 159 18003KT 19.2F 0:1| 0.0|| 0.0 0.000|| 0.00 0.00|| 0.00 0.00|| 0.00 0| 0| 0

110210/0600Z 162 17006KT 21.0F SNOW 12:1| 0.2|| 0.2 0.016|| 0.02 0.00|| 0.00 0.00|| 0.00 100| 0| 0

110210/0900Z 165 12005KT 22.6F SNOW 12:1| 1.1|| 1.2 0.091|| 0.11 0.00|| 0.00 0.00|| 0.00 100| 0| 0

110210/1200Z 168 04008KT 22.5F SNOW 17:1| 2.2|| 3.4 0.130|| 0.24 0.00|| 0.00 0.00|| 0.00 100| 0| 0

----------------------------------------------+----++-------------++--------------++-------------++-----------+---+---

110210/1500Z 171 01010KT 22.8F SNOW 14:1| 3.5|| 6.9 0.256|| 0.49 0.00|| 0.00 0.00|| 0.00 100| 0| 0

110210/1800Z 174 32015KT 25.7F SNOW 21:1| 1.4|| 8.3 0.067|| 0.56 0.00|| 0.00 0.00|| 0.00 100| 0| 0

110210/2100Z 177 30015KT 21.7F SNOW 12:1| 0.1|| 8.5 0.012|| 0.57 0.00|| 0.00 0.00|| 0.00 100| 0| 0

110211/0000Z 180 29015KT 16.9F 0:1| 0.0|| 8.5 0.000|| 0.57 0.00|| 0.00 0.00|| 0.00 0| 0| 0

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I don't want to be a debbie downer but here are my thoughts. I don't see this being a perfect setup. 1. the high situated over the northeast is weak, very weak and wouldn't be strong enough to keep the cold air locked. 2. the ridge axis out west argues for a hugger to inland track. 3. no negative nao so no feature to lock in a high pressure or keep the low as a coastal. 4. The way the gfs portrays right before that storm occurs with the cold is wrong. You have a high sliding off the mid atl coast with southerly winds ripping into the coastal plain, no way the 850s are that cold or surface temps.

It's a better setup than we've had with our snow and ice lately, and no major model has it as a cutter.

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no, it isn't.

it's an arbitrary H the model has there because it's some local maxima or something

the high pressure system is centered over the plains

This. The "high pressure" in Canada, as modeled, is a good bit weaker than my CURRENT pressure...and it was snowing lightly at that pressure too. If there were a real high pressure in the same region, this area might even have an L rather than an H. :rolleyes:

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I don't want to be a debbie downer but here are my thoughts. I don't see this being a perfect setup. 1. the high situated over the northeast is weak, very weak and wouldn't be strong enough to keep the cold air locked. 2. the ridge axis out west argues for a hugger to inland track. 3. no negative nao so no feature to lock in a high pressure or keep the low as a coastal. 4. The way the gfs portrays right before that storm occurs with the cold is wrong. You have a high sliding off the mid atl coast with southerly winds ripping into the coastal plain, no way the 850s are that cold or surface temps.

We have 30+ GFS model runs to go from here. The end result will more than definitly be different than what's currently being depicted but all of the major models are now latching onto this. First, our low this weekend is going to be key, let's see if it can become a 50/50. Secondly, the NAO is forecasted to be slightly - or neutral according to the latest Euro, and it could become even more so in later runs.

00zecmwfnao.gif

weakly posiive west based NAO

00zecmwfwestnao.gif

slightly - east based NAO

00zecmwfeastnao.gif

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We have 30+ GFS model runs to go from here. The end result will more than definitly be different than what's currently being depicted but all of the major models are now latching onto this. First, our low this weekend is going to be key, let's see if it can become a 50/50. Secondly, the NAO is forecasted to be slightly - or neutral according to the latest Euro, and it could become even more so in later runs.

Im solely going off what this 12z model run has on the gfs...Yes there is potential, but if the gfs were to keep this solution as we headed forward i would be shocked if it kept it that cold with southerly winds ripping into the coast and a lack of a high pressure.

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Im solely going off what this 12z model run has on the gfs...Yes there is potential, but if the gfs were to keep this solution as we headed forward i would be shocked if it kept it that warm with southerly winds ripping into the coast and a lack of a high pressure.

hey bro, when you do euro pbps, we are still gonna be coming over there and asking you for qpf numbers for us up here, fyi.

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im not comparing it to anything, im just saying its a 160 hrs out, so much can change.

well yeah like the late january snowstorm where philly and nyc saw 15"+ with insane snow rates. 150 hrs out from that many, including me and you were calling for a warm scenario for the I-95 because many models were well inland with 3" of rain. Its ridiculous to make any calls this far out especially in this winter, or we will get burned yet again.

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hey bro, when you do euro pbps, we are still gonna be coming over there and asking you for qpf numbers for us up here, fyi.

lol hahaha ok, well on the weekdays i can't do the 12z euro pbp cause of work now...but if there is a threat i will do them at 0z for the thread and will answer questions...weekends ill do both runs since i dont have work.

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lol hahaha ok, well on the weekdays i can't do the 12z euro pbp cause of work now...but if there is a threat i will do them at 0z for the thread and will answer questions...weekends ill do both runs since i dont have work.

you should have some kind of special status on this board for all of your efforts!!

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well yeah like the late january snowstorm where philly and nyc saw 15"+ with insane snow rates. 150 hrs out from that many, including me and you were calling for a warm scenario for the I-95 because many models were well inland with 3" of rain. Its ridiculous to make any calls this far out especially in this winter, or we will get burned yet again.

Yea thats true, but the whole evolution of that storm changed...im not saying this doesn't have potential. Im saying if the gfs holds that look for 140 hrs i would bank on that solution getting warmer..

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Yea thats true, but the whole evolution of that storm changed...im not saying this doesn't have potential. Im saying if the gfs holds that look for 140 hrs i would bank on that solution getting warmer..

As I said, though, the intensification of the low and a good track make its cold air. Plus, it helps that it is cold before.

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As I said, though, the intensification of the low and a good track make its cold air. Plus, it helps that it is cold before.

thats my point, 18-24 hrs before the storm the 850 winds are ripping from the sw, and the surface winds are coming from the south, but the gfs shows the 850s staying the same or colder and the surface in the mid to upper 20s

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