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January 2011 - Report and Summary

by Robert K. Peters, Ph.D. - National Weather Service Cooperating Observer

The month of January 2011 was colder and wetter than normal. The month saw similar temperatures to January 2010, but was 2.14 inches wetter. The thirty-day outlook had called for near normal temperatures and near normal precipitation.

The New Year began cold, with Arctic air holding temperatures below normal through the 3rd. Warmer air between the 4th and 6th returned readings to near normal levels. A weak storm system crossed on the 5th, resulting in light rainfall amounts of one-third inch or less. Arctic air returned on the night of the 7th.

A winter storm crossed on the 9th, with widespread frozen precipitation. The heaviest snow report was from Delta County with 6.0 inch, with 1.4 inch falling in Tyler and freezing rain in the two tiers of counties west of the Louisiana border.

The cold persisted through the 14th, with temperatures running 10-20 deg. Below normal.

A series of upper air disturbances crossed between the 13th and 18th, with clouds and slowly warming temperatures which finally returned to normal values on the 17th. Rain fell between the 15th and 17th, with heavy rains of 1.5 to 3.0 inches on the 16th. Tyler and Longview both set daily rainfall records on that day, with Tyler showing a three-day storm total of 3.66 inches.

Another strong cold front on the 20th brought rains of around one-tenth of an inch, windy conditions on that afternoon, and a turn back to colder temperatures through the morning of the 22nd. Storm systems crossing on the afternoon of the 23rd and night of the 24th brought rain back to the region. Temperatures continued cool, until a cold front on the 25th ended precipitation and introduced even cooler and drier air.

Temperatures began warming on the 28th, and continued near to above normal through the end of the month.

A weak storm system and cold front affected the area on the 30th and 31th, with light rain and fog.

The reporting period for temperatures and phenomenon on each day is for the twenty-four hours ending at midnight hours GMT--6 p.m. CST and 7 p.m. CDT. The reporting period for precipitation is for the twenty-four hours ending at noon GMT--6 a.m. CST and 7 a.m. CDT. All times are given using the twenty-four hour clock, and are expressed in Greenwich Mean Time.

Observations are from NWS Station 41/9207/4 in Tyler, Texas. The term "normal" refers to averages from the standard climatic period 1971-2000.

January 2011

MX MN OBS PCPN REMARKS

January 2011, RECORDS AND SUMMARY:

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