Severe Thunderstorm Warning 162, NWS Tulsa, OK

489 
WWUS54 KTSA 290536
SVSTSA

Severe Weather Statement
National Weather Service Tulsa OK
1236 AM CDT SAT APR 29 2017

ARC007-143-290600-
/O.CON.KTSA.SV.W.0162.000000T0000Z-170429T0600Z/
Benton AR-Washington AR-
1236 AM CDT SAT APR 29 2017

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 100 AM CDT
FOR CENTRAL BENTON AND CENTRAL WASHINGTON COUNTIES...

At 1236 AM CDT, a severe thunderstorm was located 5 miles north of
Prairie Grove, moving northeast at 40 mph.

HAZARD...60 mph wind gusts and half dollar size hail. 

SOURCE...Radar indicated. 

IMPACT...Hail damage to vehicles is expected. Expect wind damage to 
         roofs, siding, and trees. 

Locations in or near the path include...
Fayetteville...                   Springdale...
Rogers...                         Bentonville...
Lowell...                         Farmington...
Prairie Grove...                  Tontitown...
Bethel Heights...                 Lincoln...
Cave Springs...                   Decatur...
Greenland...                      Highfill...
Springtown...                     Centerton...
Johnson...                        Elm Springs...
Oak Grove...                      Walnut Grove...

This includes Interstate 49 between mile markers 58 and 84, and near
mile marker 86.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

This storm is producing large hail. SEEK SHELTER NOW inside a sturdy
structure and stay away from windows.

&&

LAT...LON 3588 9429 3594 9450 3638 9445 3634 9394
TIME...MOT...LOC 0536Z 205DEG 36KT 3605 9434 

TORNADO...POSSIBLE
HAIL...1.25IN
WIND...60MPH
 
$$

69

110 
WWUS54 KTSA 290550
SVSTSA

Severe Weather Statement
National Weather Service Tulsa OK
1250 AM CDT SAT APR 29 2017

ARC007-143-290600-
/O.CON.KTSA.SV.W.0162.000000T0000Z-170429T0600Z/
Benton AR-Washington AR-
1250 AM CDT SAT APR 29 2017

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 100 AM CDT
FOR CENTRAL BENTON AND NORTH CENTRAL WASHINGTON COUNTIES...

At 1249 AM CDT, a severe thunderstorm was located near Tontitown,
moving northeast at 40 mph.

HAZARD...Golf ball size hail and 60 mph wind gusts. 

SOURCE...Radar indicated. 

IMPACT...People and animals outdoors will be injured. Expect hail 
         damage to roofs, siding, windows, and vehicles. Expect wind 
         damage to roofs, siding, and trees. 

Locations in or near the path include...
Fayetteville...                   Springdale...
Rogers...                         Bentonville...
Lowell...                         Farmington...
Tontitown...                      Bethel Heights...
Cave Springs...                   Greenland...
Highfill...                       Centerton...
Johnson...                        Elm Springs...
Oak Grove...                      Savoy...
Harmon...                         Rocky Comfort...
Wheeler...                        Shady Grove...

This includes Interstate 49 between mile markers 58 and 84, and near
mile marker 86.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

This storm is producing large hail. SEEK SHELTER NOW inside a sturdy
structure and stay away from windows.

&&

LAT...LON 3600 9420 3601 9435 3637 9433 3634 9394
TIME...MOT...LOC 0549Z 222DEG 34KT 3614 9424 

TORNADO...POSSIBLE
HAIL...1.75IN
WIND...60MPH
 
$$

69

Area Forecast Discussion
National Weather Service Tulsa OK
1146 PM CDT Fri Apr 28 2017

.AVIATION...
CONCERNING TAF SITES KTUL/KRVS/KBVO/KMLC/KXNA/KFYV/KFSM/KROG.
Widespread showers and thunderstorms will result in reduced
ceilings and visibilities through the forecast period.

&&

.PREV DISCUSSION... /Issued 1003 PM CDT Fri Apr 28 2017/

..UPDATE...
This evening a warm frontal boundary had entered into Southeast
Oklahoma while a cold frontal boundary had pushed southeast into
Northwest Oklahoma and Southeast Kansas. These two boundaries were
associated with a surface boundary over Southwest Texas and an
upper low moving into Northern New Mexico. In response...scattered
showers and thunderstorms have begun to develop across Eastern
Oklahoma and Northwest Arkansas with a couple storms in Northwest
Arkansas quickly becoming strong to potentially severe.

Through the overnight hours...the warm frontal boundary is
expected to lift a little further north to perhaps near/slightly
north of the Interstate 40 corridor while the cold push in
Southeast Kansas moves into the northern part of Northeast
Oklahoma. This will allow for thunderstorms to continue to develop
and spread across Eastern Oklahoma and Northwest Arkansas...with
the greater potential north of the warm front. Mostly elevated
convection late this evening should continue overnight.
However...any storms that can develop and be rooted with the warm
front could have the potential to become more surface based. The
result will continue severe potentials overnight with large
hail...damaging winds and also a small tornado threat across the
CWA.

Late tonight into Saturday morning...convection out west should
also spread into CWA and transform the severe potential into more
of a large hail and damaging wind threat. Also...tonight into
Saturday with the multiple rounds of thunderstorms
forecast...periods of heavy rainfall increasing flash flooding
conditions will become possible. Thus...will keep the current
flash flood watch as is.

Temperatures overnight...should remain on the warm side within the
warm sector across Southeast Oklahoma...while parts of Northeast
Oklahoma could fall into the lower 50s behind the cold push moving
toward the region.

In response to the events for tonight...for the evening update...
have added minor tweaks to the overnight grids based on current
trends as the current forecast seems to be in fairly good shape.

&&

.TSA WATCHES/WARNINGS/ADVISORIES...
OK...Flash Flood Watch through Sunday morning for OKZ049-053-057-058-
     060>076.

AR...Flash Flood Watch through Sunday morning for ARZ001-002-010-011-
     019-020-029.

&&

AVIATION...05

Hazardous Weather Outlook
National Weather Service Tulsa OK
535 PM CDT Fri Apr 28 2017

ARZ001-002-010-011-019-020-029-OKZ049-053>076-291045-
Adair OK-Benton AR-Carroll AR-Cherokee OK-Choctaw OK-Craig OK-
Crawford AR-Creek OK-Delaware OK-Franklin AR-Haskell OK-Latimer OK-
Le Flore OK-Madison AR-Mayes OK-McIntosh OK-Muskogee OK-Nowata OK-
Okfuskee OK-Okmulgee OK-Osage OK-Ottawa OK-Pawnee OK-Pittsburg OK-
Pushmataha OK-Rogers OK-Sebastian AR-Sequoyah OK-Tulsa OK-Wagoner OK-
Washington OK-Washington AR-
535 PM CDT Fri Apr 28 2017

...SIGNIFICANT FLOODING AND SEVERE RISK THRU THE WEEKEND...

This Outlook is for Northwest and West Central Arkansas as well as
much of Eastern Oklahoma.

.DAY ONE...This evening and Tonight.
TORNADO.
	RISK...Limited.
	AREA...Eastern Oklahoma and Northwest Arkansas.
	ONSET...After 8 pm.

	Area OF GREATER RISK...Mainly north of a McAlester to Fort Smith
						   line and along and south of Interstate 44.

SEVERE THUNDERSTORM.
	RISK...Significant.
	AREA...Eastern Oklahoma and Northwest Arkansas.
	ONSET...After 8 pm.

	AREA AT GREATEST RISK...Mainly north of a McAlester to Fort Smith
						   line and along and south of Interstate 44.

FLASH FLOOD.
	RISK...Elevated.
	AREA...Northeast Oklahoma and Northwest Arkansas.
	ONSET...After 8 pm.

HEAVY RAIN.
	RISK...Elevated.
	AREA...Eastern Oklahoma and Northwest Arkansas.
	ONSET...After 8 pm.

DISCUSSION...
Severe storm chances along with potential flash flooding will
increase this evening and overnight tonight across Eastern
Oklahoma and Northwest Arkansas. Very large hail to baseball size,
damaging winds to 70 mph, and an isolated tornado are possible.

Clusters of thunderstorms continuing to develop over the Oklahoma
and Texas Panhandles will continue to push eastward and move into
Eastern Oklahoma and Northwest Arkansas late this evening and
overnight. At the same time...additional thunderstorms are
forecast to develop this evening and tonight along and north of a
warm frontal boundary lifting north across Southeast Oklahoma and
Western Arkansas. All modes of severe weather will be possible
with this activity through into the overnight hours and transition
to more of a large hail and damaging wind threat late tonight
across the region.

Also through tonight...multiple rounds of heavy rainfall are
expected to develop across Eastern Oklahoma and Northwest Arkansas
as the frontal boundary becomes nearly stationary over the region.
This will increase the potential for flash flooding with the
greater potential over Northeast Oklahoma into Northwest Arkansas.
A flash flood watch is in effect starting this evening and
continuing into Sunday morning.

SPOTTER AND EMERGENCY MANAGEMENT ACTION STATEMENT...
Activation of the Regional Spotter Network Expected.

.DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY.
SATURDAY...Severe Thunderstorm Potential...Heavy Rain Potential.
SUNDAY...No Hazards.
MONDAY...High Wind Potential.
TUESDAY and WEDNESDAY...Thunderstorm Potential.
THURSDAY...No Hazards.

EXTENDED DISCUSSION...
Multiple rounds of thunderstorms will continue to impact the region
Saturday and Saturday night as a powerful upper level storm system
develops to our west and interacts with a frontal boundary draped
over the region. Storm total rainfall in the 4 to 7 inch range is
expected, with locally heavier amounts likely across much of northeast
and east central Oklahoma into Northwest Arkansas thru Sunday.
This heavy rainfall could lead to life-threatening flash flooding
and significant flooding of area rivers and lakes. Locations
downstream from dams could see significant flooding as water is
released from the flooded lakes.

The quasi-stationary frontal boundary and approaching upper system
will continue to be the focus for storms with severe potential
during the afternoon and evening hours Saturday. The severe
weather threat...and heavy rainfall threat will will come to an
end from west to east as a cold front sweeps across the region
late Saturday night into Sunday morning.

Towards the middle of next week...another storm system will bring
the potential for more storms to the region. This system is expected
to push through too quickly to bring significant rainfall. Organized
severe weather is not expected either.

EMERGENCY MANAGEMENT PLANNING STATEMENT...
This is an evolving system and the axis of heavy rainfall will
likely continue to be fine tuned. Continue to follow the latest
updates and forecasts over the next 24 to 36 hours regarding the
expected hazardous weather that will affect much of the area this
weekend.

weather.gov/tulsa Contains additional information.

Special Weather Statement
National Weather Service Tulsa OK
1153 PM CDT FRI APR 28 2017

OKZ054>056-290530-
Osage OK-Nowata OK-Washington OK-
1153 PM CDT FRI APR 28 2017

...SIGNIFICANT WEATHER ADVISORY FOR EAST CENTRAL OSAGE...WASHINGTON
AND WEST CENTRAL NOWATA COUNTIES UNTIL 1230 AM CDT...

At 1153 PM CDT, a strong thunderstorm was located 4 miles northwest
of Ochelata, moving northeast at 45 mph.

Nickel to penny size hail and winds in excess of 40 mph will be
possible with this storm.

Locations in or near the path include...
Bartlesville...                   Dewey...
Copan...                          Ochelata...
Wann...                           Okesa...
Wolco...

LAT...LON 3682 9560 3650 9606 3662 9619 3700 9597
      3700 9592
TIME...MOT...LOC 0453Z 220DEG 39KT 3663 9605

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
1210 AM CDT SAT APR 29 2017

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

1145 PM     HAIL             FAYETTEVILLE            36.06N 94.16W
04/28/2017  E0.75 INCH       WASHINGTON         AR   PUBLIC

&&

AEJ

Special Weather Statement
National Weather Service Tulsa OK
1211 AM CDT SAT APR 29 2017

OKZ057-062-063-290545-
Craig OK-Delaware OK-Mayes OK-
1211 AM CDT SAT APR 29 2017

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHEASTERN CRAIG...NORTHERN
DELAWARE AND NORTHEASTERN MAYES COUNTIES UNTIL 1245 AM CDT...

At 1211 AM CDT, a strong thunderstorm was located 3 miles south of
Spavinaw, moving northeast at 40 mph.

Nickel to penny size hail and winds in excess of 40 mph will be
possible with this storm.

Locations in or near the path include...
Jay...                            Grove...
Salina...                         Langley...
Bernice...                        Ketchum...
Spavinaw...                       Disney...
Pensacola...                      Hoot Owl...
Cherokee State Park...            Spavinaw State Park...
Cleora...                         Chloeta...
Strang...                         Snowdale State Park...
Zena...

A severe thunderstorm watch remains in effect until 500 AM CDT for
northeastern Oklahoma.

LAT...LON 3653 9465 3622 9504 3627 9520 3666 9506
TIME...MOT...LOC 0511Z 207DEG 36KT 3634 9504

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
1216 AM CDT SAT APR 29 2017

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

1140 PM     TSTM WND DMG     BERRYVILLE              36.36N 93.57W
04/28/2017                   CARROLL            AR   PUBLIC

            TREES AND POWER LINES DOWN IN BERRYVILLE

&&

AEJ

Special Weather Statement
National Weather Service Tulsa OK
1216 AM CDT SAT APR 29 2017

ARZ001-010-290545-
Benton AR-Washington AR-
1216 AM CDT SAT APR 29 2017

...SIGNIFICANT WEATHER ADVISORY FOR BENTON AND NORTHWESTERN
WASHINGTON COUNTIES UNTIL 1245 AM CDT...

At 1215 AM CDT, a strong thunderstorm was located 4 miles southeast
of Siloam Springs, moving northeast at 45 mph.

Nickel to penny size hail and wind gusts up to 50 mph will be
possible with this storm.

Locations in or near the path include...
Rogers...                         Bentonville...
Siloam Springs...                 Bella Vista...
Pea Ridge...                      Gentry...
Gravette...                       Cave Springs...
Decatur...                        West Siloam Springs...
Highfill...                       Springtown...
Hiwasse...                        Miller...
Centerton...                      Sulphur Springs...
Lake Francis...                   Fairmount...
Vaughn...                         Healing Springs...

This includes Interstate 49 near mile marker 84, and between mile
markers 86 and 93.

A severe thunderstorm watch remains in effect until 500 AM CDT for
northwestern Arkansas...and northeastern Oklahoma.

LAT...LON 3650 9404 3603 9442 3613 9456 3632 9459
      3650 9457
TIME...MOT...LOC 0515Z 204DEG 41KT 3615 9448

Special Weather Statement
National Weather Service Tulsa OK
1218 AM CDT SAT APR 29 2017

OKZ061-062-067-290545-
Rogers OK-Wagoner OK-Mayes OK-
1218 AM CDT SAT APR 29 2017

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHEASTERN ROGERS...
SOUTHWESTERN MAYES AND NORTH CENTRAL WAGONER COUNTIES UNTIL 1245 AM
CDT...

At 1218 AM CDT, a strong thunderstorm was located 4 miles south of
Inola, moving northeast at 40 mph.

Nickel to penny size hail and winds in excess of 40 mph will be
possible with this storm.

Locations in or near the path include...
Pryor...                          Pryor Creek...
Chouteau...                       Inola...
Foyil...                          Sportsmen Acres Community...
Tiawah...                         Mazie...

This includes Interstate 44 between mile markers 252 and 263.

A severe thunderstorm watch remains in effect until 500 AM CDT for
northeastern Oklahoma.

LAT...LON 3597 9543 3605 9565 3646 9551 3635 9517
TIME...MOT...LOC 0518Z 203DEG 37KT 3608 9552