Heat Advisory Monday for North Texas

Wet spring led to delay in the first 100-degree day of the summer, according to NBC 5 Senior Meteorologist David Finfrock

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Get ready to sizzle in the coming days. Temperatures have been below normal for weeks. But that is changing.

The temperatures at DFW officially hit 100 degrees for the first time this summer at 3:10 pm Sunday afternoon. A Heat Advisory expired at 7 p.m. Sunday and will again be in effect from noon through 7 p.m. Monday. Please take precautions if you plan on spending time outdoors this week and drink plenty of fluids.

A change in the jet stream pattern means the triple-digit heat will continue across North Texas this week. The high-pressure system responsible for the hot weather will be centered over North Texas through Tuesday, but by midweek that high will drift back towards New Mexico.

As temperatures increase, our rain chances will be dropping. In fact, dry weather is expected for DFW all of this week. But there is a chance that a few showers may pop up by Wednesday south and east of DFW. Be prepared for staying safe in the heat. Stay hydrated, keep your pets cool and check on the elderly.

North Texas had a very wet April and May, and although precipitation amounts dropped off in June, we still had occasional showers. When the ground is wet, much of the incoming solar radiation is expended evaporating moisture from the soil. Only when the soil dries out does the sunshine have a chance to produce much higher temperatures.

That has finally happened in late July.

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Temperatures were below normal every day from July 2 through July 23, but now it is finally heating up. The other major factor in keeping temperatures below normal was the upper-level wind pattern.

In most summers we will see a heat dome established over the southern plains. That’s when we see streaks of 100-degree temperatures. But this summer, the upper level high, or heat dome, was anchored over the western states, bringing record temperatures to the west coast all the way up into Canada. But that high has migrated eastward in recent days. As a result, I am now forecasting that eight of the next 10 days will see 100 degrees or higher.

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