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August 15, 2018 August 15, 2018 August 15, 2018 August 15, 2018
ZOUNDS!
http://ticker.mesonet.org/archive/20180815/OKC-top10-August-rain.png
Well that was interesting, Mother Nature. As if raining 53,000-degree bolts of
death throughout OKC wasn't enough, she also decided to dump a May's worth of
rain in one day. A monumental August OKC rain record was shattered, and another
is poised to fall. From the Norman NWS office (their shouting, not mine):
RECORD EVENT REPORT
NATIONAL WEATHER SERVICE NORMAN OK
705 AM CDT WED AUG 15 2018
...NEW RECORD DAILY RAINFALL SET AT OKLAHOMA CITY AUG 14TH...
THE OFFICIAL MEASURED RAINFALL AT WILL ROGERS WORLD AIRPORT IN
OKLAHOMA CITY ON AUGUST 14 WAS 5.06 INCHES. THIS EXCEEDS THE
PREVIOUS RECORD RAINFALL OF 1.93 INCHES, WHICH OCCURRED IN 1989.
THE 5.06 INCHES MEASURED AUGUST 14TH ALSO BECOMES THE NEW RECORD
RAINFALL FOR ANY CALENDAR DAY IN AUGUST. THAT PREVIOUS RECORD WAS
4.62 INCHES, MEASURED ON AUGUST 11 IN 2008.
WEATHER RECORDS FOR OKLAHOMA CITY DATE BACK TO NOVEMBER 1890.
So not only did the 5.06 inches yesterday break the record for Aug. 14, it also
became the highest OKC rainfall total ever, dating back to 1890!
The monumentalness (really?) of yesterday's total doesn't end there. It also
tied for the 12th highest daily total in OKC history.
-**-
Rank Value Date
1 7.62 2010-06-14
2 7.53 1970-09-22
3 7.10 2015-05-06
4 7.08 1927-10-01
5 6.75 1932-06-03
6 6.64 1993-05-08
7 5.64 2013-05-31
8 5.63 1970-05-29
9 5.60 1981-07-27
10 5.45 1983-10-20
11 5.38 1987-05-27
12 5.06 2018-08-14
12 5.06 1913-07-01
-***-
That's strictly for Will Rogers Airport, the official OKC observation site.
There have been higher totals at other locations within OKC. Our retired OKC
North Mesonet site that sat on the campus of the Oklahoman, for instance,
recorded 11.26 inches on June 14, 2010 (same day as Will Rogers Airport's
highest total).
You can see the footprint of that heavy rain event in the 24-hour rainfall map
from the Mesonet, centered directly over SW OKC.
http://ticker.mesonet.org/archive/20180815/24hour-rain-map.png
The 3.47 total right next to the tiny spot in SW OKC is from Norman, so the
wealth was spread around to some degree. Altus was another big winner with 3.79
inches, although that was highly localized as well. When you extend the period
back 14 days, we start to see the enormity of the localized rain totals from
central through southeastern OK.
http://ticker.mesonet.org/archive/20180815/14day-rain-totals.png
http://ticker.mesonet.org/archive/20180815/Aug1-14-depart-normal.png
http://ticker.mesonet.org/archive/20180815/Aug1-14-pct-normal.png
For the Aug. 1-14 period, the Clayton Mesonet site in Pushmataha County is at
609 percent of normal, for crying out loud! Still some areas left wanting, but
by and large August has been good for Oklahoma. Northern and western areas of
the state are in dire need of a good rain.
Looking forward, the rain ain't over. Some of this 7-day forecast total map
includes rain that already fell this morning, but more rain chances are on the
way as we approach the weekend and beyond.
http://ticker.mesonet.org/archive/20180815/7day-forecast-totals.gif
Now we start to look at the statewide total for August. Through the 15th, still
only 2.46 inches, which is 1.03 inches above normal to rank as the 14th wettest
such period on record. I'm not sure how much higher we can zoom up the charts
statewide as we go forward, but I'd settle for northern and western OK to
get their fair share now. some places simply DON'T need much more for awhile.
Gary McManus
State Climatologist
Oklahoma Mesonet
Oklahoma Climatological Survey
(405) 325-2253
gmcmanus@mesonet.org
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