Area Forecast Discussion
Issued by NWS Tulsa, OK

Home | Current Version | Previous Version | Text Only | Print | Product List | Glossary On
Versions: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50
246
FXUS64 KTSA 220058
AFDTSA

Area Forecast Discussion
National Weather Service Tulsa OK
758 PM CDT Fri Jul 21 2017

...UPDATE...

.DISCUSSION...
Other than hot and muggy, pretty quiet weather across the region
this evening. Just a few tweaks made to temperatures, otherwise
no additional forecast changes expected for the remainder of this
evening.

&&

PREV DISCUSSION... /Issued 248 PM CDT Fri Jul 21 2017/

DISCUSSION...
Heat indices have climbed to around 110 degrees in several
locations already this afternoon across northeast Oklahoma and
will likely max out in the 110-113 degree range. Therefore, the
heat advisory has been upgraded to an excessive heat warning for a
large portion of eastern Oklahoma. Expect similar conditions
Saturday afternoon as upper high continues to dominate the overall
weather pattern. Stayed fairly close to persistence for lows
tonight and with high temperatures/dewpoints Saturday afternoon.

Portions of the advisory/warning may need to be extended into
Sunday depending on cloud cover and how long precipitation holds
off Sunday afternoon. Still expect a weak boundary to move into
northeast Oklahoma/northwest Arkansas by late Sunday afternoon or
early evening. Scattered strong thunderstorms will likely develop
near boundary with a slow southward progression Sunday evening.
PWATs are forecast to be around 2 inches by this time and with the
slow storm motions expected, locally heavy rainfall will be
possible in a few areas.

Additional scattered showers/thunderstorms will persist Monday
and Tuesday as weakness in upper ridge/light northwest flow
continues. Upper high will build back into the Southern Plains by
mid week with the heat/humidity returning.

&&

.PRELIMINARY POINT TEMPS/POPS...
TUL   81 101  80  98 /   0  10  10  30
FSM   79  99  78  97 /   0  10  10  30
MLC   78  97  77  97 /   0   0   0  30
BVO   76 103  75  96 /   0  10  10  40
FYV   73  94  72  93 /   0  10  10  40
BYV   74  98  74  93 /   0  10  10  40
MKO   74  97  75  97 /   0  10   0  30
MIO   76  95  75  94 /   0  10  10  40
F10   76  99  74  97 /   0  10   0  30
HHW   76  97  75  97 /   0   0   0  20

&&

.TSA WATCHES/WARNINGS/ADVISORIES...
OK...Heat Advisory until 8 PM CDT Saturday for OKZ049-053-059-063-068-
     069-072-076.

     Excessive Heat Warning until 8 PM CDT Saturday for OKZ054>058-
     060>062-064>067-070-071-073>075.

AR...Heat Advisory until 8 PM CDT Saturday for ARZ001-002-010-011-019-
     020-029.

&&

$$

SHORT TERM...11
LONG TERM....12



USA.gov is the U.S. government's official web portal to all federal, state and local government web resources and services.