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August 2006 - Report and Summary

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

The month of August 2006 was warmer and drier than normal, and was the sixth warmest August on record. August 1951 with an average temperature of 88.0 deg. Was the warmest August. For most of the month, upper air high pressure persisted. This kept temperatures high, and conditions dry. Dry soils and vegetation contributed to the hot weather, as the protracted drought persisted.

Drought conditions began in Spring 2005. Though there were a couple of tropical waves at the beginning and middle of the month, and a strong cold front at the end, rainfall from none of these events was general. There were scattered occurrences of significant rainfall, confined mainly to the eastern counties. Compared with August 2005, the month was -.- deg. Warmer, and 0.27 inch drier. Year-to-date rainfall through month's end was 4.40 inches greater in 2006 than in 2005. The thirty-day outlook for August 2006 had called for above normal temperatures and below normalprecipitation.

The week July 30-August 5 saw temperatures about 2 degrees above normal, and no rainfall. Upper air high pressure controlled the area's weather through the week. It was, however, weak enough to permit some sea-breeze front activity over the southern counties early in the week. A weak cold front dropped into the northern counties on the 5th, with widely scattered showers there. The week's average temperature was 86.4 deg., which was 3.8 degrees warmer than the previous week. Compared with the same week in 2005, the week was 1.9 degrees warmer and 0.14 inch drier.

The week August 6-12 saw temperatures about 3 degrees warmer than normal, and minimal rainfall to Tyler. With upper air high pressure persisting, high temperatures were in the high 90s and low 100s throughout the week. Rainfall was confined to sea-breeze showers over the south and the influence of weak cold fronts on the 6th and 12th. The city's only precipitation came with the first front. The week's average temperature was 86.7 deg., and rainfall was 0.01 inch. The week was 0.3 deg. Warmer than the previous week. Compared with the same week in 2005, the week was 2.2 deg. Warmer, and 0.13 inch drier.

The week August 13-19 was the hottest week of the summer, with temperatures through the week running about 5 degrees warmer than normal, and negligible precipitation. Upper air high pressure persisted through the entire week, resulting in very hot temperatures. Tyler reached 100 or higher on each day. Strong daytime heating brought isolated thunderstorms on the afternoon of the 14th, with a few occurrences of severe weather. A tropical low brought a few sea-breeze showers to the south on the 14th and 15th. Measurable rainfall amounts were spotty and generally light. The week's average temperature was 88.6 deg., and there was but a trace of rainfall. This was 1.9 deg. Warmer than the previous week. Compared with the same week in 2005, the week was 2.6 deg. Warmer, and there was 0.16 inch of rain in the previous year.

The week August 20-26 saw temperatures about 5 degrees warmer than normal, and rainfall about 150 percent of normal. Temperatures lowered slightly at mid-week because of thunderstorms and rainfall resulting from a tropical low on the 21st and 22nd. Though coverage was not general, the eastern and southern counties received beneficial rains, and there were isolated occurrences of severe weather each afternoon. A strong thunderstorm brought localized flooding to Tyler on the afternoon of the 21st. The period August 9-21 saw the temperature reach or exceed 100 degrees in Tyler on 12 of the 13 days, with 9 consecutive days between the 13th and 21st. Temperatures warmed again at late-week as the effects of the mid-week rains wore off and upper air high pressure rebuilt. The week's average temperature was 87.6 deg., which was 1.0 deg. Lower than the previous week. Rainfall was 1.21 inches. Compared with the same week in 2005, the week was 1.6 deg. Cooler, and 0.47 inch wetter.

A cold front and its accompanying upper air storm brought an end to the Summer's heat during the last five days of the month. Temperatures lowered on the 28th because of widespread showers, with frontal passage on the 29th. This brought mild nighttime temperatures, and lower relative humidities with daytime readings near seasonal normals.

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.

AUGUST 2006

MX MN OBS PCPN REMARKS

AUGUST 2006, RECORDS AND SUMMARY:

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