Thunderstorm Clusters Produced Flooding Rains
Two clusters of thunderstorms producing flooding rains crossed the area overnight and Tuesday morning. Each cluster was about 50 miles wide, and held together for several hours.
Rain fell in Tyler in association with this system between about 6:45 a.m. and 8 a.m., with the city picking up 0.31 inch and the airport 0.21 inch.
Radar estimates suggest that more than four inches may have fallen over northern Van Zandt and southern Rains counties.
The showers and thunderstorms brought some rain to about 90 percent of the area. Between the two strong clusters, amounts were under one inch.
Rain had ended in the area by mid-day, and skies partially cleared during the afternoon.
Tuesday’s temperatures ran about 6 degrees lower than those of Monday, and were near normal. Warmer readings are likely both Wednesday and Thursday as upper air high pressure returns.
A similar set-up, with ample moisture, a crossing upper air low, and an east-west oriented cold front going stationary somewhere south of IH-20, could occur again Friday and Saturday.
Low temperatures in the area Tuesday morning were from the high 60s to lower 70s, and were up to 10 degrees lower than those of Monday. Low readings on Wednesday morning should be near 70, with lower to middle 70s likely Thursday and Friday.
Afternoon high readings Tuesday were in the 80s, and were up to 15 degrees lower than Monday’s. High temperatures Wednesday through Friday should run in the 90s as upper air high pressure returns out of North Mexico.
Tyler’s highest sustaining wind Tuesday was southerly at 21 mph during the morning thunderstorm, with a peak gust of 25 mph and an average velocity of 11.8 mph. Winds Wednesday through Friday should be southerly at 5-15 mph.
Tuesday’s average relative humidity was 71 percent, with lower values likely both Wednesday and Thursday.
Tyler’s high temperature of 88 came at 4:17 p.m., following the morning’s low of 69 at 9:20 a.m.
The station pressure stood at 1013.1 millibars at 7 p.m. Tuesday. This compares with 1009.4 millibars 24 hours earlier.
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