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May 2012 - Report and Summary

The month of May 2012 was about 3 degrees warmer and about an inch and a third drier than normal. Compared with May 2011, the month was 3.2 deg. Warmer and 0.84 inch wetter. Year-to-date rainfall was 6.55 inches greater this year than last. The thirty-day outlook had called for above normal temperatures and near normal precipitation.

May began quite warm, cooled off during mid-month, and ended warm. Upper air high pressure was in control through the 7th, when a cold front came through. Winds aloft then became northwesterly, which permitted milder air to flow into the region until the upper air high returned on the 18th. This sent temperatures back above normal, until slight cooling accompanied a storm system on the 30th-31st.

Storm systems crossed on the 8th, 11th, 14th, and 30th-31st bringing rainfall.

There were no major severe weather events during the month.

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.

May 2012



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