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. . . Day by Day . . . . . . September 23 in Mesonet History* . . .
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Record Maximum 99 F BURN 2000
Record Minimum 37 F KENT 2004
Record Rainfall 4.44" BURB 1997

* Mesonet History = since 1994

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September 21, 2017 September 21, 2017 September 21, 2017 September 21, 2017  


Mighty Rain


http://ticker.mesonet.org/archive/20170921/Mighty.Rain.png

That 7-day rain forecast is gonna be suhhhh-weet! if it comes true. It's probably
a bit ambitious, but with drought and dry conditions persisting and even spreading
into the state from the north and southeast, it will be much needed. Check out
today's new U.S. Drought Monitor report for Oklahoma, as well as for the 
surrounding region. 

http://ticker.mesonet.org/archive/20170921/20170919_OK_trd.png
http://ticker.mesonet.org/archive/20170921/20170919_conus_trd.png

So still nothing *too bad* in our area, just a spot of moderate drought up in 
Harper and Beaver counties, but that abnormally dry condition continues to spread
down from Kansas and up and over from the ArkLaTex region. The dryness in our
state is quite evident from the Mesonet rainfall maps, DESPITE the recent rains.
The totals look nice, but when compared to normal, not so nice. 

http://ticker.mesonet.org/archive/20170921/30day-rain-totals.png
http://ticker.mesonet.org/archive/20170921/30days.norm_pct.png
http://ticker.mesonet.org/archive/20170921/30days.norm_dep.png  

That dryness is beginning to impact those planting wheat as well, as both the 
topsoil and subsoil moisture wicks away. 

http://ticker.mesonet.org/archive/20170921/4inch-plant.avail.water.png
http://ticker.mesonet.org/archive/20170921/32inch-plant.avail.water.png 

That's where our latest rain forecast comes in, with changes on the way starting
late in the weekend. A large upper-level trough will move east from the Western
U.S. and split off, leaving the Southern Plains with a lovely cut-off low 
remaining out west. All that together means an express elevator to fall, for
next week with lots of rain and cooler weather. Check out the 7-day temp forecast
from our friends at the Norman NWS office, for instance.

http://ticker.mesonet.org/archive/20170921/nws-norman-7day-temps.png 

UNTIL THEN, however, summer will remain in place with a vengeance, complete with
fire danger and lots of suffocating heat. We will be close to triple-digits in 
some places today...will it be the last of the 100s if so? 

http://ticker.mesonet.org/archive/20170921/nws-tulsa-heat.png
http://ticker.mesonet.org/archive/20170921/todays-forecast-highs.png 

The mouse may roar...you just have to wait a bit.

Gary McManus
State Climatologist
Oklahoma Mesonet
Oklahoma Climatological Survey
(405) 325-2253
gmcmanus@mesonet.org