Severe Thunderstorm Warning 183, NWS Norman, OK

Area Forecast Discussion...UPDATED
National Weather Service Norman OK
720 PM CDT Fri May 18 2018

.UPDATE...
Thunderstorms that developed west of the fa late this
afternoon/early evening continue to move into western portions of
the fa. Have increased PoPs to cover this activity. Thunderstorms
expected to continue to move east across portions of the fa the
rest of this evening. Some strong to severe storms possible.

&&

.PREV DISCUSSION... /issued 704 PM CDT Fri May 18 2018/

DISCUSSION...

AVIATION...
Thunderstorms will move through northwestern then north central
and central Oklahoma this evening before dissipating overnight.
VFR conditions are expected to exist outside of thunderstorms.
Gusty south winds will persist Saturday with the approach of a
weak cold front to northwestern Oklahoma around 192400.

PREV DISCUSSION... /issued 351 PM CDT Fri May 18 2018/

DISCUSSION...
High-resolution models show a consistent signal of storm
development across the panhandles late this afternoon and this
evening which should move east/northeast into the area with the
highest chances across northwest Oklahoma associated with the
enhanced risk of severe storms. But even now we have had
early development east of Lubbock that may also affect our
southwestern areas. We will have the potential for severe storms
this evening with hail and wind potential with the initial
discrete development, evolving more into a wind event as the
storms develop into a line of complex through mid evening. Severe
weather potential will likely decrease later tonight. We can see
some lingering pops tomorrow morning, but then additional
potential of storm development along and ahead of the cold front
that will move through the area tomorrow night. There is severe
potential with these storms as well, especially as storms become
more widespread in the evening. The front will bring cooler
weather for early next week, but only a brief lull from storm
chances as the area will remain under a general southwest flow
aloft into next week with various shortwaves bringing storm
chances, although the specific timing is always a question mark.

&&

.PRELIMINARY POINT TEMPS/POPS...
Oklahoma City OK  70  90  64  78 /  30  10  50  40
Hobart OK         69  92  63  77 /  60  20  50  50
Wichita Falls TX  70  92  67  82 /  20  10  50  50
Gage OK           63  86  54  74 /  80  20  50  20
Ponca City OK     70  93  62  78 /  40  20  50  20
Durant OK         70  90  69  85 /  20  10  20  20

&&

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

25/09

Hazardous Weather Outlook...UPDATED
National Weather Service Norman OK
928 PM CDT Fri May 18 2018

OKZ004>048-050>052-TXZ083>090-200230-
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-
928 PM CDT Fri May 18 2018

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

.DAY ONE...Rest of Tonight...

.Thunderstorms...
Thunderstorms will continue to develop and move across portions of
Oklahoma through early Saturday. Some of the storms could become
strong to severe across portions of northern and western Oklahoma
with damaging wind gusts and large hail the main concerns. The
potential for severe storms is expected to diminish around
midnight.

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

.Thunderstorms...
Strong to severe thunderstorms will be possible across parts
western, northern and central Oklahoma and western north Texas
late Saturday afternoon and night along and ahead of a dryline and
a cold front.

Thunderstorm chances will continue Sunday through Thursday across
parts of Oklahoma and north Texas. A few storms Sunday through
Thursday may be strong to severe.

.Heavy Rainfall and Flash Flooding...
Locally heavy rainfall of 1 to 2 inches in a short period of time
from slowly moving thunderstorms may cause flash flooding in a
few locations across Oklahoma and north Texas late Saturday
afternoon through Wednesday.

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
849 PM CDT FRI MAY 18 2018

OKZ014-016-021-022-190230-
Washita OK-Roger Mills OK-Beckham OK-Custer OK-
849 PM CDT FRI MAY 18 2018

...SIGNIFICANT WEATHER ADVISORY FOR northwestern Washita...southern
Roger Mills...Beckham and southwestern Custer Counties Until 930 PM
CDT...

AT 846 PM CDT, a strong thunderstorm was located near Vinson;
however, very gusty south winds were occuring well north of Greer
County.

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

Locations impacted include...
Elk City, Sayre, Cheyenne, Erick, Hammon, Reydon, Sweetwater, Strong
City, Texola, Berlin and Dempsey.

This includes Interstate 40 between mile markers 1 and 44.

LAT...LON 3506 9999 3573 10000 3569 9934 3533 9930
TIME...MOT...LOC 0146Z 244DEG 30KT 3529 9965

WR

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORMAN OK
853 PM CDT FRI MAY 18 2018

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0840 PM     NON-TSTM WND GST 5 ENE DEMPSEY           35.55N 99.75W
05/18/2018  M57 MPH          ROGER MILLS        OK   MESONET

&&

MAD

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORMAN OK
913 PM CDT FRI MAY 18 2018

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0905 PM     NON-TSTM WND GST 2 WNW FOSS RESERVOIR    35.58N 99.25W
05/18/2018  M62 MPH          CUSTER             OK   MESONET

&&

MAD

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE Norman OK
916 PM CDT FRI MAY 18 2018

OKZ014-016-021-022-190245-
Washita OK-Roger Mills OK-Beckham OK-Custer OK-
916 PM CDT FRI MAY 18 2018

...SIGNIFICANT WEATHER ADVISORY FOR northern Washita...southeastern
Roger Mills...northeastern Beckham and Custer Counties Until 945 PM
CDT...

AT 913 PM CDT very gusty south winds were occuring over parts of
custer and washita counties. These gusts are associated with showers
and a few thunderstorms to the south.

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

Locations impacted include...
Elk City, Weatherford, Clinton, Cordell, Burns Flat, Arapaho, Hammon,
Dill City, Canute, Corn, Custer City, Butler, Bessie, Foss, Colony,
Foss Reservoir and Stafford.

This includes Interstate 40 between mile markers 35 and 82.

LAT...LON 3561 9950 3579 9882 3539 9862 3533 9862
      3525 9946
TIME...MOT...LOC 0213Z 244DEG 30KT 3553 9921

WR

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