Area Forecast Discussion
Issued by NWS Oklahoma City, OK

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000
FXUS64 KOUN 182307
AFDOUN

Area Forecast Discussion
National Weather Service Norman OK
607 PM CDT Wed Jul 18 2018

.DISCUSSION...

&&

.AVIATION...
For the 00z TAFs:

VFR conditions will prevail. Light east/southeast winds will
become southwesterly tomorrow morning.

&&

.PREV DISCUSSION... /issued 508 PM CDT Wed Jul 18 2018/

..Update...

DISCUSSION...
Based on observational trends we canceled a good portion of the
Heat Advisory today, and dropped it entirely for tonight. It goes
back in effect tomorrow afternoon at noon for a large portion of
the area. We`ll send another update to the advisory later this
evening once areas closer to the Red River cool off to clean it
up. Mid clouds persisted and limited diabatic heating sufficiently
to keep a good portion of central Oklahoma cooler than expected
this afternoon. Also, we adjusted the winds in the near term
slightly.

BRB

PREV DISCUSSION... /issued 249 PM CDT Wed Jul 18 2018/

DISCUSSION...
A few weak echoes continue on area radars, but rainfall is
minimal, so rain chances will remain very low into tonight. Storm
development will be strongly inhibited through at least Saturday,
as very warm temperatures aloft will stifle instability and
maintain very high levels of convective inhibition. Even a cold
front on Friday and Saturday will be hard pressed to generate any
precipitation as it moves to southern Oklahoma.

With the upper ridge moving almost overhead, temperatures will be
quite hot until the front arrives (it will take several days to
progress through our forecast area). Our existing Heat Advisory
didn`t work out very well today under the expanse of cloud cover,
but the clouds are not expected to protect central/north-central
Oklahoma from the heat tomorrow or Friday. The rain that fell
overnight will help hold temperatures down for a day or so in
northern Oklahoma, but in exchange for that, the humidity will be
high...probably resulting in similar heat indices as in areas
farther south.

So...there are no changes to the existing Heat Advisory with this
issuance.

CmS

&&

.PRELIMINARY POINT TEMPS/POPS...
Oklahoma City OK  87  75 107  78 /  20   0   0   0
Hobart OK        101  77 109  79 /  10   0   0   0
Wichita Falls TX 107  78 110  81 /  10   0   0   0
Gage OK           92  75 105  77 /  20  10   0   0
Ponca City OK     91  75 103  78 /  20  10   0   0
Durant OK        104  77 105  79 /  10   0   0   0

&&

.OUN WATCHES/WARNINGS/ADVISORIES...
OK...Heat Advisory from noon Thursday to 7 PM CDT Friday for OKZ007-
     008-012-013-018>020-023>048-050>052.

     Heat Advisory until 7 PM CDT this evening for OKZ033-036-037-039-
     044>046-048-050>052.

TX...Heat Advisory from noon Thursday to 7 PM CDT Friday for
     TXZ083>090.

     Heat Advisory until 7 PM CDT this evening for TXZ083>090.

&&

$$

03/12/12


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