9 August 2011
From the NCDC today: “Oklahoma’s statewide average temperature was the warmest monthly statewide average temperature on record for any state during any month.” That amazing statistic underscores just what kind of summer it has been across the U.S. and the records keep falling. The average temp. in Oklahoma based on all stations for the entire month of July was 88.9. degrees. This breaks the record of July 1954 of 88.1 degrees.
The ground is so hot in Oklahoma and Texas, that in spite of the significant weakening of the high pressure system in the mid levels of the atmosphere, the temp is staying well above 100 degrees. It will take some significant rains to cool the ground and bring temps back to normal, but this will likely be slow to happen. Long range guidance does show the heat wave weakening and already temps. in Iowa and Kansas have dropped back considerably.
Here is a summary of the incredible records of July from NCDC.
In the USA, there have been1,437 record highs and just 52 record lows in the first 7 days of August. It’s worth mentioning that almost all climate researchers expect the night-time lows to climb much faster than the daytime highs over the next 100 years, and this heat wave has seen just that with 7,511 record high lows and just 436 record lows.