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November 2012 - Report and Summary

The month of November 2012 was slightly warmer and much drier than normal. Year-to-date rainfall was 12.99 inches greater in 2012 than in 2011. The extreme drought ended in November 2011, however drought resumed in the Fall of 2012. November 2012 was 0.8 deg. Cooler than November 2011, and 2.96 inches drier. The thirty-day outlook had called for near normal temperatures and near normal precipitation.

The month began warm, with temperatures running above normal through the 4th. Cold fronts on the 5th and 6th sent readings below normal, until they went back above normal on the 9th. A rather dry air mass prevented any rainfall until a strong system arrived on the 11th. This system brought widespread rains of between one-half inch and one inch to the region. It was followed by an Arctic air mass, which kept temperatures well below normal between the 12th and 17th. The first freeze of the season came on the 13th, ending the growing season (which had begun on February 26) at 261 days. A sprawling surface high, which covered the eastern two-thirds of the United States, kept skies clear to fair.

The remainder of the month was dry in Tyler, though there were showers and thunderstorms on the night of the 26th and morning of the 27th with a passing cold front. A few of the nighttime thunderstorms were strong, apparently resulting in one fatal private plane crash in Cherokee County.

Temperatures warmed between the 19th and 23rd, cooled with a front on the morning of the 24th, climbed on the afternoon of the 26t, and cooled again with the 27th's front. Warming commenced on the night of 29th as surface high pressure moved eastward and upper air high pressure set up over the Northwest Gulf of Mexico.

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.

November 2012



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