Hazardous Weather Outlook
Issued by NWS Tulsa, OK

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FLUS44 KTSA 201809
HWOTSA

Hazardous Weather Outlook
National Weather Service Tulsa OK
109 PM CDT Thu Apr 20 2017

ARZ001-002-010-011-019-020-029-OKZ049-053>076-211030-
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-
109 PM CDT Thu Apr 20 2017

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

.DAY ONE...This afternoon and Tonight.

SEVERE THUNDERSTORM.
RISK...Limited.
AREA...Eastern Oklahoma.
ONSET...Primarily after midnight.

FLASH FLOOD.
RISK...Limited.
AREA...Along and north of Interstate 40.
ONSET...After midnight.

DISCUSSION...
Isolated thunderstorms will remain possible this
afternoon and early evening along a cold front,
which will extend from west central Arkansas
through southeast Oklahoma.  After midnight
showers and thunderstorms will expand in coverage
and become widespread by sunrise.  A few severe
storms are possible with large hail the primary
concern.
Heavy rainfall is also likely overnight with
area of flash flooding possible especially
along and north of Interstate 40.  The heavy
rainfall will continue through Friday.

SPOTTER AND EMERGENCY MANAGEMENT ACTION STATEMENT...
Local Spotter Activation May Be Needed.

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

EXTENDED DISCUSSION...
Widespread showers and thunderstorms will be ongoing
through Friday morning with flooding becoming an increasing
concern through the day.  A lull in the heaviest rains may
develop by early afternoon before another round of showers
and thunderstorms expands across the region late Friday
afternoon through Friday night.  Total rainfall amounts
of 2 to 4 inches will be common along and north of Interstate
40 with localized amounts near 6 inches possible.  This will
cause both flash flooding and larger river flooding.

Additionally, the risk of severe weather will increase by
mid afternoon on Friday, generally along and south of Interstate
40.  A risk for tornadoes will exist from late afternoon through
early evening before the risk transitions more toward large hail
and damaging winds.  The cold front will sweep through southeast
Oklahoma late Friday evening and largely end the severe weather
threat.

Breezy and cool conditions will prevail on Saturday with
gusty south winds returning early next week along with
thunderstorm chances by late next week.

weather.gov/tulsa Contains additional information.

$$



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