LiveBlog: Season's Last Big Storm, Saturn, Hits Ohio
|By: Buckey2745, 3:48 PM GMT on March 05, 2013||+0|
This is a LiveBlog of Saturn's impacts on Ohio. Newest entries are at the bottom.
Even with Saturn quickly approaching from the southwest, computer models still can't come in agreement with placement and intensity of snowfall. Yesterday the NWS issues a Winter Storm Warning with the headline of "5-7 inches of snow." Today it's 4-8", but with the actual forecast for southeastern Franklin County at 1-3", with some 2-4" predictions just a few miles west.
Right now if you believe computer models it appears the western portion of the state will get the worst of it, with upwards of a foot of snow.
The best we can do now is just pay attention to upper air soundings, radar and low trajectory. That'll tell us all we need to know. And right now it's looking like most of today will saddle us with rain and sleet, with a changeover happening after dark.
My concern is with a warm pocket of air that may stay behind as the low exits, leaving us with possibly heavy sleet on the backside during the best accumulation time for snow. If this occurs, like I'm afraid might happen, our totals will bottom out from the 5" I predicted to maybe an inch or two. This storm could be a bust.
A large dry slot exists between our morning precip which gave us our first accumulation of the storm, a dusting, and the main low. Our eyes need to be to the west where the deformation axis will setup on the backside and bring us our snow. More later...
This ensemble model shows what I was referencing earlier with a pocket of warm air staying behind leaving us with a much longer duration of rain/sleet. This is from 11pm tonight, with this model not showing a transition to all sleet until 2am and all snow at 4am, which would pretty much drop us below warning criteria for this storm:
You can find this by accessing the SPC's Storm-Scale Ensemble here.
The low pressure is already in southern Ohio and slowly moving east. The freezing temps are already as close as Dayton:
Once the changeover happens, which should be in the next two to three hours, we could have snowfall rates of 1-2" per hour.
Snow has started here in Canal Winchester with large wet flakes. Since changeover started sooner than expected we'll probably see accumulation on the higher end.
At 11:25pm snow totaled 2" here in Canal Winchester. That's an average of a little over an inch an hour. Snow is still coming down hard but a dry slot is beginning to develop just south of here that makes me think we may get a reprieve for a while:
The constantly heavy snow will probably end a little after midnight with a few scattered patches of heavy snow, so I don't expect an inch an hour to keep up, but with snow not ending until daybreak I think 5" will easily be achieved for all areas of Franklin County.
The most exciting part of this storm that I never anticipated was a report through a scientific discussion this evening:
REPORTS OF ISOLATED THUNDER ASSOCIATED WITH A STRONGER SNOW BAND
EXTENDING FROM DARKE COUNTY...SOUTHEASTWARD ACROSS WARREN COUNTY.
THESE THUNDER OCCURRENCES ARE ISOLATED IN NATURE.
The chances of any thunder have passed. You'll find it right in that transition from rain to snow when the lift in the atmosphere is at it's greatest, so with two hours in the snow now we'll have to wait for another winter storm to experience that.
That's it for this evening, I'll have a wrap up tomorrow.
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I'm a 29 year old weather enthusiast from Central Ohio. Certified SKYWARN storm spotter.
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Canal Winchester, OH
|Dew Point:||32.9 °F|
|Wind:||8.0 mph from the WSW|
|Wind Gust:||9.0 mph|
Updated: 3:33 AM EST on December 09, 2013