Special Weather Statement, NWS Norman, OK

Area Forecast Discussion...UPDATED
National Weather Service Norman OK
1228 AM CDT Sat Jun 24 2017

.AVIATION...
24/06Z TAFs. Primarily VFR conditions most of the forecast period.
However, MVFR cigs/vsby expected in and near TSRA across
southwest Oklahoma and KSPS terminals through at least 12-14Z.
Most if not all of TSRA expected to stay south of KOKC overnight
and tomorrow morning. Northeast winds will slowly subside through
tomorrow morning before switching to east and southeast during the
day Saturday.

&&

.PREV DISCUSSION... /issued 552 PM CDT Fri Jun 23 2017/

AVIATION...
Gusty north/northeast winds expected to diminish around sunset. Will
leave mention of any thunder out of the sites along and north of I-
40 as chances remain too low late tonight into Saturday morning.
Will keep mention at HBR/LAW/SPS along with some MVFR ceilings
associated with the convection. Otherwise, VFR conditions to prevail.

30

PREV DISCUSSION... /ISSUED 251 PM CDT Fri Jun 23 2017/

DISCUSSION...
A cold front that is unusually strong for late June is continuing
to move south across southeast Oklahoma and north Texas this
afternoon. A few thunderstorms have already formed along the front
in south-central Oklahoma, and more are expected into the evening.
It is unclear how much coverage there will be with these storms,
as shear is very weak, but instability is moderately strong. Most
likely, they will remain scattered, with wind gusts and heavy rain
being the main features.

Later tonight, probably around midnight, there is a solid signal
that storms will form near I-40, mainly west of Oklahoma City, and
then merge into a storm cluster by sunrise. This cluster of storms
is then expected to move southeast across the southwest quadrant
of Oklahoma, south-central Oklahoma, and most of our Texas
counties.

After that system moves out, we will be left under northwest flow
aloft, and it appears that rain chances will be mainly confined
to western parts of our area for the rest of the weekend. As the
pattern changes slowly through the week, the highest rain chances
(though not particularly high) will shift to northern Oklahoma,
and finally to eastern Oklahoma by Friday.

Another cold front may bring more rain/storms for next Friday and
the weekend.

&&

.PRELIMINARY POINT TEMPS/POPS...
Oklahoma City OK  63  81  64  85 /  20  10  10  20
Hobart OK         62  78  64  86 / 100  30  20  20
Wichita Falls TX  66  80  66  86 /  80  60  20  20
Gage OK           60  78  62  85 /  10  30  30  30
Ponca City OK     61  83  63  85 /  10  10  10  20
Durant OK         65  84  64  86 /  70  60  10  10

&&

.OUN WATCHES/WARNINGS/ADVISORIES...
OK...None.
TX...None.
&&

25/30/11

Hazardous Weather Outlook
National Weather Service Norman OK
815 PM CDT Fri Jun 23 2017

OKZ004>048-050>052-TXZ083>090-241700-
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-
815 PM CDT Fri Jun 23 2017

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

.DAY ONE...Tonight...

.Thunderstorms...
Thunderstorms are possible tonight across parts of southern Oklahoma
and western north Texas. A few strong to marginally severe storms
may occur, producing gusty winds and hail, but organized severe
weather is not expected.

.DAYS TWO THROUGH SEVEN...Saturday through Thursday...

.Thunderstorms...
Thunderstorms will remain possible Saturday through early next
week, especially across western Oklahoma. Strong gusty winds and
heavy rain will be possible with the stronger storms.

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

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE Norman OK
1244 AM CDT SAT JUN 24 2017

OKZ021-033-034-240615-
Harmon OK-Beckham OK-Greer OK-
1244 AM CDT SAT JUN 24 2017

...SIGNIFICANT WEATHER ADVISORY FOR northern Harmon...southwestern
Beckham and northwestern Greer Counties Until 115 AM CDT...

AT 1240 AM CDT, a strong thunderstorm was located 9 miles northwest
of Vinson, moving southeast at 20 MPH.

HAZARDS INCLUDE...
Hail up to the size of nickels...

LAT...LON 3495 10000 3520 10000 3504 9962 3481 9981
TIME...MOT...LOC 0540Z 305DEG 17KT 3502 9993

SIX

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE Norman OK
111 AM CDT SAT JUN 24 2017

OKZ036-240645-
Jackson OK-
111 AM CDT SAT JUN 24 2017

...SIGNIFICANT WEATHER ADVISORY FOR central Jackson County Until 145
AM CDT...

AT 107 AM CDT, a strong thunderstorm was located near Olustee,
moving southeast at 25 MPH. Other strong storms were located over
Martha, Altus, and Headrick.

HAZARDS INCLUDE...
Hail up to the size of nickels perhaps
quarters...
Minor flooding in areas of poor drainage...

LAT...LON 3459 9961 3479 9935 3466 9910 3464 9910
      3462 9909 3459 9914 3459 9916 3457 9918
      3446 9936 3446 9938 3443 9940 3442 9942
TIME...MOT...LOC 0607Z 309DEG 22KT 3452 9940

SIX

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE Norman OK
132 AM CDT SAT JUN 24 2017

OKZ033-036-TXZ083-240700-
Harmon OK-Jackson OK-Hardeman TX-
132 AM CDT SAT JUN 24 2017

...SIGNIFICANT WEATHER ADVISORY FOR southern Harmon...southwestern
Jackson and northwestern Hardeman Counties Until 200 AM CDT...

AT 130 AM CDT, a strong thunderstorm was located 7 miles south of
Hollis, moving southeast at 15 to 25 MPH.

HAZARDS INCLUDE...
Hail up to the size of quarters...

LAT...LON 3469 9998 3466 9967 3440 9968 3448 10000
      3449 10000
TIME...MOT...LOC 0630Z 292DEG 14KT 3458 9994

SIX

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE Norman OK
154 AM CDT SAT JUN 24 2017

OKZ038-240730-
Comanche OK-
154 AM CDT SAT JUN 24 2017

...SIGNIFICANT WEATHER ADVISORY FOR northern Comanche County Until
230 AM CDT...

AT 149 AM CDT, a strong thunderstorm was located near Medicine Park,
moving southeast at 25 MPH.

HAZARDS INCLUDE...
Hail up to the size of nickels...

LAT...LON 3479 9870 3486 9855 3485 9847 3466 9825
      3452 9857
TIME...MOT...LOC 0649Z 328DEG 23KT 3474 9852

SIX

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE Norman OK
234 AM CDT SAT JUN 24 2017

OKZ037-038-044-240800-
Tillman OK-Cotton OK-Comanche OK-
234 AM CDT SAT JUN 24 2017

...SIGNIFICANT WEATHER ADVISORY FOR eastern Tillman...northern Cotton
and southern Comanche Counties Until 300 AM CDT...

AT 230 AM CDT, strong thunderstorms were located near
Hollister, Faxon and Lawton, moving southeast at 30 MPH.

HAZARDS INCLUDE...
Hail up to one-half inch diameter...
Wind gusts to 50 MPH...
Minor flooding in areas of poor drainage...

LAT...LON 3448 9898 3468 9850 3446 9814 3416 9867
TIME...MOT...LOC 0730Z 307DEG 25KT 3444 9858

SIX

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE Norman OK
321 AM CDT SAT JUN 24 2017

TXZ086-089-090-240845-
Clay TX-Wichita TX-Archer TX-
321 AM CDT SAT JUN 24 2017

...SIGNIFICANT WEATHER ADVISORY FOR west central Clay...southeastern
Wichita and northeastern Archer Counties Until 345 AM CDT...

AT 316 AM CDT, a strong thunderstorm was located over southeastern
Wichita Falls, moving southeast at 20 MPH.

HAZARDS INCLUDE...
Hail up to one-half inch diameter...
Wind gusts to 50 MPH...
Minor flooding in areas of poor drainage...

LAT...LON 3400 9865 3407 9845 3375 9815 3366 9872
TIME...MOT...LOC 0816Z 335DEG 16KT 3387 9851

SIX