LaNina is a simple phenomenon, but it can change up the weather worldwide. Basically, during a LaNina, the waters in the Pacific Ocean along the equator are cooler than climatological average. Sounds simple, but it can have huge effects on the weather all across the United States. For us here in Texas, we typically experience a milder period. Also, storm tracks are to our north generally. However, right now, the storm track has shifted south.
Here is the current set up:
We have a flow in the upper levels coming right off the Pacific Ocean, which is typical in a LaNina pattern. Therefore, moisture is being injected into the upper atmosphere, keeping it cloudy overhead. Plus, with the flow coming off the ocean, the air is temperate. If the flow was coming from the north, then we would feel the chill of the arctic. Due to the direction of the flow, this solves the question about the reprieve from Jack Frost.
Additionally, storms coming from the Gulf of Alaska move south and get caught up in this Pacific Flow. Therefore, you get an area of low pressure that slows its progress, meandering around Baha and Southern California.
These are the type of systems that are very slow moving and pack a punch with moisture. Additionally, its because of these sluggish features that keep the weather repetitive around here. Yes, it will remain cloudy, mild, breezy, and showery from time to time.
Eventually this storm will move farther inland and increase our rain chances for the Brazos Valley Wednesday and Thursday. Following this damp period, another Low will come back into the picture, sit around Southern California and we will repeat the same process into the weekend and next week.
All I can tell you is to expect plenty of cloud cover, not too much rain, and mild air.
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