Light Icy Event Tuesday Morning, Maybe Wednesday Too

Seems like a distant memory, but it was only a couple of days ago where temperatures soared into the 70s. However, as this winter season continues to roll on, the main plot stays the same...."It's Cold Out There!" Now, temperatures struggle to move out of the 40s, while overnight lows bottom out near freezing, not good for the farming community. With such cold air in place and disturbed weather coming our way, a possible icy scenario may crop up tomorrow morning. Albeit a light event, but any wintry precipitation can cause problems on the roads.

Saturday night, a cold front moved by and delivered a new batch of cold air from the north. The same front continues to move slowly east, but with high pressure to our north, the cold air is not budging. What you can notice from the illustration on the right is that high pressure flows clockwise and with that motion, a chilly north flow will be persistent as long as the high-pressure system stays to our north and north west. Additionally, whats important about this image is that this demonstrates what is happening at the surface, and not the upper levels. In order for our icy situation to come to fruition, the surface and the upper levels will have to be set up correctly.

This happens to be the case, as the upper level flow shows two main distinct characters. First, there is a flow coming out of the Pacific Ocean in the upper levels, drawing in moisture and warmer air aloft. Two, the flow is quite energetic with disturbances riding along too. Its these disturbances in the upper levels that help to lift the air and generate clouds that can precipitate. When this type of mixture occurs  its hard for snow to reach the ground. Hence, the possibility for freezing rain and ice pellets (also known as sleet).

Warmer air aloft carried by air from the Pacific Ocean will be warm enough, when precipitation falls to the ground, it will be as liquid as opposed to snow or ice crystals. This is where the surface temperatures come into play. Since the air will be much colder closer to the ground, the liquid precipitation that falls to the ground, could freeze during decent as sleet, or freeze on the ground as freezing rain. Therefore, temperatures will be critical tomorrow morning as many locations in our viewing area will be right around 32°, if not just below. Even if the temperature is 34° at your house, sleet can still fall from the sky and create slick spots. However, if the temperature is 32° or below and it looks like its raining, its really freezing rain that will cause huge travel problems.

Based on the latest computer guidance, areas along highway 21 and points north have the best chance to see icy roads tomorrow, where areas south could stay all rain.

Areas in pink represent locations that could have ice tomorrow, where places in green indicate a plain rain.

Overall: This will be a light event and not a big storm. However, if there are any ice accumulation (even if it seems minor) roads will be hazardous.

Timing: Best timing for sleet or freezing rain will be between 3am and 7am Tuesday, before temperatures warm above 32°.

First To Freeze: Bridges and overpasses, as well as secondary roads.

Following tomorrow mornings event, I'm keeping my eye closely on Wednesday morning as well.


For more news and weather you can log onto: www.facebook.com/plushnickweather or www.facebook.com/KAGSTV. You can also check out our twitter feeds: @KAGSweather and @KAGSnews. Furthermore, you can download our new weather app. Search: KAGS Weather, in the Apple App Store or Google Play for Android.

Wintry Weather In The Brazos Valley?

***Note: I apologize for the lack of images. A few technical difficulties need to be worked out with Blogger. I hope to fix these problems soon.***

Once in a while, the Brazos Valley will welcome Old Man Winter to come and stay. Jack Frost has already paid us several visits with a multitude of cold shots from Canada. On average, this area experiences some sort of frozen precipitation falling from the sky every 2 years. In a 5-10 year window, snow or ice will accumulate once according to climate records. Nonetheless, though ice and snow cause hazardous driving conditions, its a treat to see a rare sight.

At the moment, we have several key elements in play that could help produce light frozen precipitation overnight and early Friday morning. Before I get into the details I would like to mention upfront that this will be no big deal and the roads across the entire viewing area should be fine.

In order for this to work correctly, we need a helping of cold air, and a disturbance to generate precipitation.

You might have noticed how chilly its been lately with temperatures hovering 10-20 degrees below average during the day and around the freezing point at night. High pressure to our north and north west pushed in air from Canada, locking in the chill. Not only are temperatures cold at the surface, but aloft as well. That's good if you want snow or sleet.

Additionally, an upper level disturbance sits to our west which has already caused havoc in west Texas. Areas from El Paso to Kerrville have reported snow. The most interesting reports came from Guadeloupe Pass in Pine Springs, TX. Pockets of heavy snow and gusts near 50mph have been spotted. With reduced visibilities, Pine Springs has had moments of blizzard-like conditions.

The same disturbance will move into northwest Texas and eventually though Oklahoma. During this time, pockets of light precipitation will fall across the Brazos Valley. Unfortunately for snow lovers, the path of low-pressure does not favor widespread snow for us. However, with cold air in place and arrangement of temperatures in the upper levels, there is a possibility of light sleet or even a few snowflakes that could fall from the sky.

Mainly, this will be a light rain event, but from time to time, you might see an ice pellet or wet snowflake. Any frozen precipitation that falls will melt when it comes into contact with the ground. Therefore, I do not expect any ice accumulations on the roads. Just make sure to keep it easy tonight and tomorrow as some roads could be wet.

Overall, this will not be a big deal, but something to be aware of. Maybe down the pike there could be some snow in our future. For now, keep your eyes to the sky.

For more news and weather you can log onto: www.facebook.com/plushnickweather or www.facebook.com/KAGSTV. You can also check out our twitter feeds: @KAGSweather and @KAGSnews. Furthermore, you can download our new weather app. Search: KAGS Weather, in the Apple App Store or Google Play for Android.