The Heat is Officially “Excessive”

August 2, 2008 at 7:16 am | Posted in Uncategorized | 1 Comment

The heat we’ve experienced this summer is well documented, and the statistics keep piling up:

  • 8 consecutive days above 100°
  • 14 out of the last 15 days above 100°
  • 22 total days above 100°
  • Several records for warmest low temperature

Many people will read that list and think “that’s just excessive”.  Well, that title has now become official.  This morning, the National Weather Service issued an Excessive Heat Warning for several North Texas counties including Dallas, Tarrant, Collin, and Denton.  A Heat Advisory is also in effect for all of North Texas.

What’s the difference?  We often hear that a Heat Advisory has been issued, but what does that mean?  To issue a Heat Advisory, we look for at least two consecutive days where the heat index is above 105 and the low temperature doesn’t drop below the upper 70’s.  The Excessive Heat Warning goes a step further – it means that the heat index is likely to top 110° under the same time period.  It’s certainly not the type of weather you want to experience for very long, and North Texas is looking 3 days of it.

High temperatures will look to be at or above 105° through Monday.  This is significant because DFW doesn’t top that mark often.  In this decade, there have only been 10 days that topped 105° on the thermometer; 8 of those occurred in 2000 including 6 in a row from Aug. 30-Sept. 4, 2000.

That Excessive Heat Warning and Heat Advisory will be in effect until 7PM on Monday, so be careful this weekend.  Those looking for relief won’t get much.  Although the warning should expire on Monday, we could see triple-digit heat through the week.

Meteorologist Michael Hammer


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  1. Down here in Austin we’re at about 39 100+ days so far. Yeah, it gets to the point where you just want to smash a record, that’s all you can do about it.

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