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September 2015 - Report and Summary

The month of September 2015 was warmer and very much drier than normal. In fact, the month replaces September 2000 when 0.17 inch fell as the fifth driest September since record-keeping began in 1896. The month's rainfall total was 0.15 inch. September is the second month in three to set dry month records. July 2015 saw no rain, making it the driest July on record and tying with July 1924 and July 1947 for that distinction. Compared with September 2014, the month was 2.7 deg. Warmer, and 2.26 inches drier. Year-to-date rainfall was 12.71 inches greater in 2015 than in 2014 the effect of the very wet Spring.

The thirty-day outlook for September 2015 had called for near normal temperatures and above normal precipitation. When revised on August 31, it was changed to above normal temperatures and near normal precipitation.

September began very warm. Upper air high pressure dominated the area's weather through the 8th. On the 9th, a weak cold front meandered into the area. This brought widespread rain to the northern half of the area that morning, with up to three inches along the IH-30 Corridor. Widely scattered showers came on the 10th with the diffuse front over the southern counties. A secondary front on the 11th brought cooler temperatures, and a few showers over the southern counties.

The middle and latter portions of the month were generally warm and dry, though there were a few exceptions. For most of this period, upper air high pressure controlled the region's weather. Drier air permitted mild morning low readings on several days. However, a storm system along the Upper Texas Coast brought scattered showers on the 28th and 29th.

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.

September 2015


September 2015, RECORDS AND SUMMARY:

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