Heat Statistics and Lake Levels

***UPDATE: This year’s 100+ streak began June 30 and ended at 20 days on July 19th.

This is a new record for consecutive 100-or-greater temperatures in Texoma (as measured at North Texas Regional Airport in Grayson County).

The summer of 2011 continues to make a name for itself in the record books. Although there have been very few record highs, the overall level of heat is making its way into climate history. A few bullet points:

  • This is an all-time record based on available records for our area. Dallas records show 42 days of 100-or-higher for the Metroplex, but those are a different set of records based on DFW Airport. Please bear in mind that even one day below 100 breaks the streak of consecutive days, and that's what happened here in 1980.
  • The longest 100-plus streak before this was 17 days in 1998.
  • There were 16 100+ days in a row in 1980.
  • The summer of 2011 is likely to be in the top 5 hottest (and possibly THE hottest) unless the pattern drastically shifts in August .
  • July 2011 is now the hottest July on record, easily beating 1980 because of much warmer overnight lows.
  • Lake Texoma reached its lowest level since October 2006 in late July when the level dropped below 613.54 feet.
Area Lakes have not escaped the heat and lack of rain either. Lake temperatures are in the 80s to near 90, which coupled with the extreme heat make for very high evaporation rates.
 Here are some lake level changes in feet since June 1, rounded to nearest tenth:                                       
Lake Level Trends (feet)
Lake June 1 Level July 12 Level Change
Arbuckle 871.1 869.2 -1.9
Atoka 598.7 586.8 -2.9
Bonham 565.0 563.5 -1.5
Hugo 408.0 406.1 -1.9
McGee Creek 578.9 576.8 -2.1
Ray Roberts 631.5 630.5 -1.0
Texoma 616.0 614.1 -1.9


Burn bans are in effect for all but a few Texoma counties. The fire danger increases as each day passes without significant rainfall.
Temperature records are for Sherman, but conditions have been very similar throughout the area.
 Take Care,
Steve LaNore
Chief Meteorologist


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