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April 2013 - Report and Summary

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

The month of April 2013 was slightly cooler and slightly drier than normal. Compared with April 2012, the month was 5.9 deg. Cooler and 0.03 inch drier.

Year-to-date rainfall was 4.63 inches less in 2013 than had been the case in 2012.

The thirty-day outlook had called for above normal temperatures and near normal precipitation. When revised on March 31, it continued calling for above normal temperatures but changed to above normal precipitation.

April began warm, with a storm system and cold front crossing between the 2nd and 4th. This brought widespread showers and thunderstorms, with cool temperatures between the 3rd and 5th. This was followed by a warming trend which persisted through the 9th.

On the 10th, another storm system crossed with widespread rain and a turn back to very cool temperatures, which continued into the morning of the 12th.

A warm-up ensued, with above normal temperatures through the morning of the 18th. At that time, another strong storm system and Arctic front entered the region, with widespread rain and thunderstorms and a turn back to much below normal temperatures.

These persisted through the 20th, followed by warming through the 23rd when another cold front arrived.

The brief cool-down with this front lasted until the morning of the 25th, with temperatures rising to near to above normal levels through the end of the month. Weak upper air high pressure kept the region dry.

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.

APRIL 2013

MX MN OBS PCPN REMARKS

APRIL 2013, RECORDS AND SUMMARY:

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