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September 2014 - Report and Summary

The thirty-day outlook had called for above normal temperatures and near normal precipitation. When revised at the end of August, it called for near normal temperatures and above normal precipitation. September 2014 was slightly warmer and slightly drier than normal. Compared with September 2013, the month was 2.0 deg. Cooler. September 2014 was 4.80 inches drier than September 2013. Year-to-date rainfall was 3.00 inches less through month's end in 2014 than in the previous year.

Through September 11, the area was under upper air high pressure for all save the 6th and 7th. As a result, temperatures were very warm. Showers occurred on the afternoon of the 2nd as the sea-breeze, energized by Tropical Storm Dolly, brought showers to the region. A cold front on the 6th brought widespread rainfall with highly varying amounts from a trace to more than three inches. Heavy rain fell in Tyler on the evening of the 6th. A strong cold front and upper air storm system crossed on the 11th, bringing below normal temperatures through the 13th, and widespread rain to the area.

Upper air high pressure returned on the 14th, with warm temperatures continuing through the 22nd.

Upper air moisture from Hurricane Odile and low-level moisture from a tropical wave in the Gulf of Mexico contributed to scattered afternoon showers beginning on the 16th.

Another cold front crossed on the morning of the 23rd, with only scattered light showers to the north and west of Tyler. Temperatures went below normal through the morning of the 25th, with warming then as weak upper air high pressure dominated the weather. The upper air continued in control through the end of the month, with warm and mostly dry conditions. A few isolated showers formed in the moist air mass due to daytime heating on the afternoons of the 29th and 30th.

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 2014

MX MN OBS PCPN REMARKS

September 2014, RECORDS AND SUMMARY:

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