Severe Thunderstorm Warning 717, NWS Norman, OK

Area Forecast Discussion
National Weather Service Norman OK
352 PM CDT Thu Jul 27 2017

.DISCUSSION...
A few showers have developed over the past hour in the vicinity
of a prefrontal trough/cold front in western and central Oklahoma.
With hot and somewhat dry conditions, strong outflow winds will
be possible with the stronger storms this afternoon. Convection
that develops in this area will likely weaken during the early
evening.

Additional storms are forming in the Oklahoma and Texas
panhandles in advance of a mid level trough axis/vort max. By this
evening, better mid level ascent may result in more organized
convection that will mainly impact the northern half of Oklahoma.
PWATs along and north of the surface boundary are very high
(1.8-2.1) so areas of locally heavy rainfall are possible.

The front will continue to push southward tonight into Friday and
is expected to stall across northern/central Texas. Drier air will
begin to filter into north central Oklahoma by late Friday, with
rather humid conditions remaining across the rest to the forecast
area. Will allow the Heat Advisory to expire this evening, but a
few areas in far southern Oklahoma and north Texas may have heat
index values near 105 Friday afternoon. Better rain chances Friday
night/early Saturday will be across southern/western Oklahoma and
north Texas.

Drier air will continue to push south and west on Saturday,
bringing much needed relief from rather hot and humid conditions.
Over the weekend, western Oklahoma will have the best opportunity
for rain/storms.

As the upper ridge shifts farther west late Sunday/Monday,
another disturbance may bring a better opportunity for rain and
thunderstorms.

&&

.PRELIMINARY POINT TEMPS/POPS...
Oklahoma City OK  76  93  72  91 /  40  20  20  20
Hobart OK         76  96  73  93 /  40  30  30  30
Wichita Falls TX  78 101  75  95 /  20  20  30  20
Gage OK           72  84  69  91 /  40  50  40  30
Ponca City OK     75  90  67  88 /  30  10  10   0
Durant OK         79  98  74  92 /  20  20  30  20

&&

.OUN WATCHES/WARNINGS/ADVISORIES...
OK...Heat Advisory until 8 PM CDT this evening for OKZ024>032-039>043-
     045>048-050>052.

TX...None.
&&

Hazardous Weather Outlook
National Weather Service Norman OK
1143 AM CDT Thu Jul 27 2017

OKZ004>048-050>052-TXZ083>090-281645-
Harper-Woods-Alfalfa-Grant-Kay-Ellis-Woodward-Major-Garfield-
Noble-Roger Mills-Dewey-Custer-Blaine-Kingfisher-Logan-Payne-
Beckham-Washita-Caddo-Canadian-Oklahoma-Lincoln-Grady-McClain-
Cleveland-Pottawatomie-Seminole-Hughes-Harmon-Greer-Kiowa-Jackson-
Tillman-Comanche-Stephens-Garvin-Murray-Pontotoc-Coal-Cotton-
Jefferson-Carter-Johnston-Atoka-Love-Marshall-Bryan-Hardeman-
Foard-Wilbarger-Wichita-Knox-Baylor-Archer-Clay-
1143 AM CDT Thu Jul 27 2017

This hazardous weather outlook is for portions of northern...
western...central...and southern Oklahoma...and western
north Texas.

.DAY ONE...This Afternoon and Tonight...

.Heat...
Heat index values will rise to the 103 to 108 range this
afternoon across portions of central and southern Oklahoma. A heat
advisory is in effect for locations along and south of highway
412 and along and east of I-35.

.Thunderstorms...
Scattered showers and some thunderstorms will be possible through
tonight across portions of the area. The strongest storms will be
capable of gusty winds, along with brief heavy downpours, and
frequent lightning.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday...

.Thunderstorms...
Thunderstorm chances will continue through early next week across
portions of Oklahoma and western north Texas. Heavy rainfall and
strong, gusty winds could be possible with some thunderstorms.

Get graphics and more details at weather.gov/norman...and follow
our weather forecast office on Twitter and Facebook.

Kurtz

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE Norman OK
346 PM CDT THU JUL 27 2017

OKZ024-027-272115-
Grady OK-Canadian OK-
346 PM CDT THU JUL 27 2017

...SIGNIFICANT WEATHER ADVISORY FOR northeastern Grady and
southeastern Canadian Counties Until 415 PM CDT...

AT 344 PM CDT, a strong thunderstorm was located 4 miles east of
Union City, moving east at 10 MPH.

HAZARDS INCLUDE...
Wind gusts over 50 MPH...

LAT...LON 3524 9767 3528 9795 3546 9795 3550 9767
TIME...MOT...LOC 2044Z 269DEG 10KT 3537 9787

..speg.

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE Norman OK
428 PM CDT THU JUL 27 2017

OKZ022-023-272200-
Washita OK-Caddo OK-
428 PM CDT THU JUL 27 2017

...SIGNIFICANT WEATHER ADVISORY FOR east central Washita and
northwestern Caddo Counties Until 500 PM CDT...

AT 426 PM CDT, a strong thunderstorm was located near Eakly, moving
east at 5 MPH.

HAZARDS INCLUDE...
Hail up to one-half inch diameter...
Wind gusts over 50 MPH...

Locations impacted include...
Eakly, Colony, Fort Cobb Reservoir, Alfalfa and Albert.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Monitor the weather situation closely and be alert for threatening
weather conditions.

&&

LAT...LON 3518 9864 3535 9872 3548 9852 3537 9837
      3515 9837
TIME...MOT...LOC 2126Z 248DEG 5KT 3531 9857

CMS