July 2011: Most extreme July on record for the U.S.
According to the National Climatic Data Center's Climate Extremes Index, July 2011 was the most extreme July on record (since 1910) with a value of 37%. The Climate Extremes Index is created by merging the various climate indicators (drought, flood, extreme heat, extreme cold, etc.) into an index that can be tracked over time. This month's record CEI was due to extreme warm minimum temperatures across the country, wet northern Plains and Great Lakes, extreme warm maximum temperatures, and the severe drought across the South and Gulf Coast.
It was the fourth warmest July on record for the nation, and the fourth warmest month overall with an average temperature of 77°F. Extreme heat continued to bake the South, and Oklahoma and Texas both had their warmest months on record. Oklahoma's statewide average temperature was a remarkable 88.9°F in July, which is the warmest monthly statewide average for any state in any month. Dallas, Texas hit or exceeded 100°F on 30 out of the 31 days in July. For the entire South climate region, which comprises Texas, Oklahoma, Kansas, Louisiana, Arkansas, and Mississippi, July 2011 was the warmest month on record for any of the climate regions.
As we noted in a previous blog, an unprecedented area of exceptional drought covered the United States in July, the largest area in the history of the U.S. Drought Monitor. 75% of Texas was in an exceptional drought, and the entire state of Oklahoma was in moderate to exceptional drought in July. The NCDC estimates that it would take 20 inches of rain to end the drought in one month in the worst hit areas of Oklahoma and Texas.
Figure 1. Texas and Oklahoma had its hottest and the state of Washington had its 11th coolest July on record last month, according to the NCDC.
Figure 2. Texas had its second driest July on record, and Oklahoma had its 9th driest according to the NCDC. California continues to be wetter than average, and last month was its 8th wettest July on record.
Angela
Reader Comments
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(runs)
5.5" in Wesley Chapel. LOVE IT
And it's on it's way to me in Wesley Chapel Fl (Pasco county)
????
Katrina and the waves or the oj's singing back stabber. Kind of ironic don't you think?
1.) Current Wind shear
2.) Current mid-level Wind shear
3.) Wind shear tendency
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Mactavish numbers too low for redevelopment? ;)
92L is the one controlling the Eastern Atl right now, nice spin shown on here, getting nicer; that other spin to its east should be absorbed by 92L.
Well, as I said a little earlier, a lot of the models show at least an area of strong vorticity moving ENE from off the coast of Florida. May see a Bret-type situation.
Yeah, I noticed that. Its like a wall of moisture going out to battle the dry air.
Cool.
Well, ya lost me there, Press :/
just a random phrase to ponder ;-)
Okay, I admit. I laughed.
Aquak where is that head banger of yours?
Not a lot out there to track ...
TS BUSTED FORECAST ALIBI
Ever since the beginning of the season my ignore list has tripled, it's sad that some have nothing better to do than to stir up trouble on the blog.
Which one is 92L, the one on the left or right? TIA
The right.
The one to the left, the other one is at the mid-levels.
Oh snap, I meant left. Dunno WHERE I got right from.
Ok I'm confused lol.
When's the MoJO expected to pop back up again?
SAL is going to be much less of an issue for 92L than it was with Emily. If shear remains low in front of it and 92L can keep its low level spin, it ought to have a pretty decent chance at developing in a couple of days once over warmer waters.
Thanks ol' gro!
This is literally three times more rain than we've gotten this year. It's sad and desperate.
JLPR was correct. Even the greatest of us (just kidding :P) experience blunders from time to time.
Everytime I wake up, there's another invest. I think I'll go take another nap. You guys seem to have everything under control.
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