Cool Down on the Way for RGV; A Messy West

Rio Grande Valley:

Winter is among us and temperatures in the Rio Grande Valley feels like spring-like temperatures.  Today, an afternoon high of 82 and 83 was reached in Brownsville and McAllen, respectively.  These temperatures are about 15 degrees warmer than the normal temperature in the Rio Grande Valley at this time of the year.  Winds remained breezy today, especially in the eastern portion of the RGV.  Tonight, expect foggy conditions with lows in the mid 60s and winds out of the southeast at 10-15 mph. Here is a look at the next 3 days for the RGV:

(12/23): Thursday will be a bit cooler, but not by much.  The morning will start of with patchy fog, burning off by 9 am.  Highs will be in the mid 80s, in lower 80s near the island, with partly cloudy skies.  Winds will be breezy, again, out of the southeast at 15-20 mph, with higher gusts at times.  Thursday night will be mostly cloudy with winds out of the south southeast at 5-10 mph and lows in the low 60s.

(12/24): Christmas eve will start out mild, with highs reaching the upper 70s/lower 80s, but a cold front is expected to move through the Valley in the late afternoon, dramatically dipping evening temperatures in the lower 50s by late night.  With the front comes a shift in winds, out of the north northwest and an increase in clouds.  A slight chance of rain cannot be ruled out as the front pushes through.

(12/24): Your Christmas day forecast looks to be a chilly one in the morning, but warming up to the mid 60s by the afternoon.  Skies will be mostly clear by afternoon with gusty winds out of the north northwest at 15-20 mph.  Christmas evening will be a cold one for the Valley.  Clear skies will  allow for radiational cooling and temperatures will be in the upper 30s in western and mid sections of the Valley.

Here is the cold front position as of 7 pm CST:

Cold Front at 7 pm CST 12/22/2010

Rest of the Nation:

California has really seen their fair share of rain and snow over the past week(record amounts in places). There is currently an upper-level trough in association to a surface low, just off the coast of California.  This is bringing heavy rain fall for southern California, southern Nevada, and Western Arizona.  The surface low is expected to move northeast into the Rockies by tomorrow afternoon, then move south and cause problems for north Texas and Oklahoma for Christmas eve.

The northeast is getting pounded by a nor’easter disturbance.  Heavy snow and very windy conditions are affecting Maine, Vermont, New Hampshire, Rhode Island and Massachusetts.  The nor’easter is projected to continue moving northeast and will bring sunny skies for the extreme northeast by Friday.  Computer models have yet another nor’easter system impacting the northeast by next Monday and Tuesday from the same low coming off the shore of California right now.  This assumption is still in question and is subject to change.

700mb heights/Temperature/Humidity(%). Little precipitation in the middle of the country due to an upper-level ridge at 700mb.



About Brian

University of Oklahoma graduate with a degree in Meteorology. Follow me on Twitter: @WeatherInformer
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