UPDATE

Excessive heat warning issued for county


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The heat is on and it will continue.
As temperatures hit 105 at Decatur Municipal Airport Wednesday afternoon, the National Weather Service issued an “excessive heat warning” for Wise County and the rest of North Central Texas for Thursday and Friday. Temperatures are expected to hit 107 and 108 Thursday and Friday.
“Excessive heat warnings are issued when we expect temperatures to reach 105 or the heat index over 110,” said Juan Hernandez, meteorologist with the National Weather Service Office in Forth Worth. “Temperatures will exceed 105 or above through weekend. They are not that common. The last time we issued an excessive heat warning was August 2011.”
The extreme heat is being caused by a ridge of high pressure centered over New Mexico, Hernandez said.
The heat is exacerbating severe drought conditions already in place in the county.
In the Keetch-Byram Drought Index (KBDI), which measures the wildfire potential by taking into account the soil moisture, the county is at an average of 684 on a scale ranging from 0 to 800. The top end of the scale represents completely dry conditions. Much of the county is above 700 with the high of 727.
Several fire departments battled a grass fires on Private Road 1272 in the extreme heat across the county as humidity levels dipped under 20 percent.
Hernandez said the calm winds were preventing a fire weather warning.
“With the heat and lack of rain everything is drying out. We expect an uptick in the fires this weekend,” he said.
Wise County has a 90-day burn ban in place.
Temperatures are finally expected to dip below the triple digits next week as the high pressure system moves to the west, Hernandez said.

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