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Winter 2014-2015 Pattern Discussion Thread III


BIG FROSTY

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well GSP is showing 60% snow now for asheville on Thursday but here again all wlos is talking is spring type temps and never did mention snow for Thursday.  can't believe how its not even mentioned for Thursday but in all fairness there was a new weather girl doing the weather she normally is a reporter in the field. 

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well GSP is showing 60% snow now for asheville on Thursday but here again all wlos is talking is spring type temps and never did mention snow for Thursday. can't believe how its not even mentioned for Thursday but in all fairness there was a new weather girl doing the weather she normally is a reporter in the field.

They must be looking at the DGEX !
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Been off of the models and the boards the last few days. I don't buy the cold front with overrunning on the backdoor to give us snow. Personally I think this past week was our last shot...but it was kind of fun waking up to ice on the car this morning so I guess it's still possible. 

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Here you go larry and anyone interested per 1994 anafrontal as requested:

 

Winter Weather - Winter Storm Database

(Please click on Details link for more information)

 

 

Impact Region Event Start Date
Start Time (EST) End Date
End Time (EST) Impacts 132.gif
Details
Ice Storm 1994-02-10
10:00:00 1994-02-11

A strong cold front brought a surge of arctic air into North Carolina on the 10th and plunged temperatures 40 to 50 degrees from readings the previous day to below freezing. Low pressure developed along the front causing widespread sleet and freezing rain across northern and western sections. The greatest ice accumulation of one to two inches and associated damages to trees and power lines occurred in the northern Piedmont and northern Foothills regions. Elsewhere in the northern Interior and western sections, ice accumulations ranged from one-quarter to one 1 inch. Numerous motor vehicle accidents were also reported.

 

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More info from Alabama prospective:

 

On the morning of Wednesday, February 9th, a powerful cold front was barreling southward. It extended from Northeast Tennessee to south of Memphis to near Shreveport. It was 66F at Birmingham and 71F at Shreveport, but a short distance across the front, it was already down to 36F at Memphis and 8F at Oklahoma City. Just the day before, it had been 73F at Birmingham, 74F at Memphis and 83F at Shreveport. At Dallas, the mercury fell from 79F before the front to 27F before the day was over. At Abilene, the mercury dropped from 80F to 22F, an amazing drop of 58 degrees. The ice storm was beginning over western sections of the Southeast. Widespread area of one inch ice accumulations would occur, with over 6 inches over northern Mississippi.

By the morning of Thursday, February the 10th, the front had slowed its forward progress and a complex set of features adorned the surface map across the Deep South. The front was over Southeast Alabama. The mercury had fallen to 40F at Birmingham, 23F at Nashville, 26F at Memphis, 29F at Shreveport and 36F at Jackson. The freezing line at the surface was down into Northwest Alabama. At 18,000 feet, the flow over the southern United States was out of the southwest, spreading moisture up and over the shallow cold air mass behind the front. Real trouble was brwing in the western Gulf of Mexico, where a 1008 millibar surface low was south of Houston. Precipitation was falling over a wide area of the Carolinas, Georgia, Tennessee, Alabama, Mississippi and back into Louisiana and Texas. Sleet was falling at Shreveport and Dallas. Problems were already occurring over Arkansas and Northwest Tennessee, where significant freezing precipitation had already fallen.

That surface lowed moved up into North Alabama by the morning of Friday the 11th. In the warm sector of this dynamic low, it was 59F at Biirmingham and 65 at Montgomery. Precipitation was falling over a wide area ahead of the low over Mid- Atlantic back into the Carolinas, Tennessee and the Deep South. In the cold sector, it was 32F with freezing rain at Memphis. It was 28F with freezing rain at Charlotte and 25F with freezing rain at Raleigh. Memphis picked up 1.08 inches of rainfall during the preceding 24 hours, with most of it falling as freezing rain.

On the morning of Saturday, February the 12th, precipitation was scattered across the Southeast, with temperatures in the 30s and 40s. Winds aloft were still out of the southwest. By the morning of the 13th, a strong cold front was sweeping across the area. The event was over.

But in its aftermath, the ice storm would cause over $3 billion in damage. Nine people were killed as a direct or indirect result of the storm. To million customers were without power at the height of the storm with nearly one half million in the dark three days later. In fact, some places did not get power back for one month. In Alabama, seven counties over the Northwest part of the state were devastated. Trees blocked roads, which were already impassable because of the ice glaze. Three to five inch rainfall amounts occurred, resulting in a heavy glaze over the Northwest and even causing flooding elsewhere. It was the worst ice storm in history over Southeast Arkansas. 80,000 utility poles fell in the storm. Every power pole was downed in some areas. Tennessee was hard hit, with many locations receiving five inches of precipitation, with a mazimum of 7.78 inches at Shelbyville. Mississippi was the hardest hit, with 3 to 6 inch ice accumulations common. 3.7 million acres of commercial forests were devastated, with losses to timber interests estimated at $1.3 billion. Twenty five percent of the state’s pecan industry was destroyed.

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Looks like RAH is on board for something 'wintery' later this week...

 

 

  • Thursday Rain and snow likely. Cloudy, with a high near 43. Chance of precipitation is 70%.
  • Thursday Night A chance of snow. Mostly cloudy, with a low around 23. Chance of precipitation is 30%.
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<p>

Looks like RAH is on board for something 'wintery' later this week...

  • Thursday Rain and snow likely. Cloudy, with a high near 43. Chance of precipitation is 70%.
  • Thursday Night A chance of snow. Mostly cloudy, with a low around 23. Chance of precipitation is 30%.

Funny that they say snow. Seems like there would be some ice involved, too.

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RAH Monday morning...

THIS IS STILL A LOW CONFIDENCE FORECAST FOR PRECIPIATION TYPE THURSDAY INTO THURSDAY NIGHT. IF THE ARCTIC FRONT CAN PUSH THROUGH EARLY THURSDAY... AND A MORE SIGNIFICANT WAVE CAN DEVELOP ALONG THE FRONT AS THE COLD AIR IS PUSHING IN FROM THE NORTH... THEN MORE IN THE WAY OF SNOW/SLEET MAY FALL THAN IS CURRENTLY THOUGHT... MAINLY ACROSS THE NORTHERN PIEDMONT. HOWEVER... CONFIDENCE IS LOWERED IN ACCUMULATIONS THAT WOULD BE ANTICIPATED DUE TO TIMING (MAINLY AFTERNOON)... THE EXPECTED WARMTH AND RAIN PRECEDING THE FRONT... AND THE WARMING SOIL TEMPS. 
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Here's a simulated ir radar for the Thursday threat.. that would be a nice band of precip in eastern nc and the temp would be below freezing at this time.. the gfs had been consistently showing wintry precip run after run.. maybe we get one last shot at a little something.

gfs_ir_seus_16.png

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Thanks, NCSNOW, for the details about the 2/1994 ZR event. That one turned out to cause no ZR at KATL (no surprise).

The model consensus has shown no more than a minimal threat to ATL for 3/5 since that outlier 12Z GFS of yesterday, which had a whopping 0.25" of qpf while 32 or colder at 2M. I have no reason to switch from my feeling of this being a minimal threat. Climo and the models now fully agree that there will be a small amount of wintry precip. in ATL at most barring some real freaky change/surprise.

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I wish I had before and after soil temps from November 1st to show you guys talking about warmer ground temps.  Trying to see if I can find out what they were currently.

 

They were warm, I know that.

 

Digging around shows historical data with soil temps in the 60s but it had absolutely no problem sticking fast.

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