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Did I Say "Sleet"?!

9:49 PM Mon, Dec 08, 2008 |
Gene Norman
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That was the reaction around here when I uttered those words during tonight's newscasts. Computer models are showing that it will get very cold here after the front that brings Tuesday's rain moves through. Okay, we've seen a few bouts of chilly air move in, but this time, there's something else going on. In the upper levels of the atmosphere, a pocket of very cold, dense air will slide all the way down to south Texas late Tuesday and then slide up through East Texas early Wednesday. This means that the air aloft, around 5,000 feet could be well below zero even though surface temperatures will hover in the upper 30s/low 40s. At the same time, a surface low will develop along front in deep South Texas late Tuesday and as that low moves up the coast early Wednesday, it will spread low clouds and rain inland. Depending on how close to the ground the cold air gets, clouds could have enough moisture in them to freeze. As that frozen precipitation heads toward the ground, it will melt in the somewhat warmer air near the surface. However, if it all doesn't melt, then we have the perfect scenario for sleet, basically, ice that hits the ground. Since the ground will be above freezing, the sleet will melt on contact. There won't be enough of it to accumulate, but it could be visually exciting.

fcst_1208_2.jpg

This forecast map shows a surface low developing around Corpus Christi at the tail end of Tuesday's front.

fcst_1208_3.jpg

This forecast map shows the possible sleet across parts of Southeast Texas early Wednesday morning as cold air coming in from the north meets with moisture drawn in from the surface low.



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7 Comments

Alan Clanton said:

Mr. Norman, I just thought you might want to know it is
snowing in Bay City as of 4:00p.m.
Alan from GOTTA HAVE INSURANCE AGENCY

Debbie said:

It's snowing in The Woodlands and Conroe as of 4:30 p.m.

Alan Clanton said:

Gene, it is still snowing in Bay City as of 5:oopm.
Alan from GOTTA HAVE INSURANCE AGENCY.

Sandy Caruso said:

Beautiful !!! Snow in Cypress, TX (Fairfield) around 2:30 p.m. The children at Keith Elementary were taken out to the playground by their wonderful teachers to experiment their first snowfall. They were wild with excitement! The same goes for the adults as this was the first time in my husband's life that he has seen snow. Like kids in a candy store, we are so happy. Can we order more for Christmas???

Chris Stellhorn said:

We have had 2 inches of snow sticking at the moment. Over here in the 77015 area code, near the beltway and i-10 east. Still coming down.

MER said:

Is the Siberian Artic Blast still a possibility for the 15th +/-?

ALH said:

Nope, it was not sleet here in La Marque at about 9:30 pm. It was definitely snow. I have plenty of video and pictures


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