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Flash Flood Watch

Flood Watch
National Weather Service Tulsa OK
940 PM CDT Thu Sep 20 2018

ARZ001-002-010-011-019-020-029-OKZ049-053-060>076-211045-
/O.CON.KTSA.FF.A.0002.180921T1800Z-180923T1200Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Benton-Carroll-Washington AR-Madison-Crawford-Franklin-Sebastian-
Pushmataha-Choctaw-Tulsa-Rogers-Mayes-Delaware-Creek-Okfuskee-
Okmulgee-Wagoner-Cherokee-Adair-Muskogee-McIntosh-Sequoyah-
Pittsburg-Haskell-Latimer-Le Flore-
Including the cities of Rogers, Bentonville, Berryville,
Eureka Springs, Fayetteville, Springdale, Huntsville, Van Buren,
Ozark, Charleston, Fort Smith, Antlers, Clayton, Hugo, Tulsa,
Claremore, Pryor, Grove, Jay, Sapulpa, Okemah, Okmulgee, Wagoner,
Tahlequah, Stilwell, Muskogee, Checotah, Sallisaw, McAlester,
Stigler, Wilburton, and Poteau
940 PM CDT Thu Sep 20 2018

...FLASH FLOOD WATCH REMAINS IN EFFECT FROM 1 PM FRIDAY AFTERNOON
THROUGH 7 AM SUNDAY MORNING...

The Flash Flood Watch continues for

* Portions of Arkansas and Oklahoma...including the following
  counties...in Arkansas...Benton...Carroll...Crawford...
  Franklin...Madison...Sebastian and Washington AR. in
  Oklahoma...Adair...Cherokee...Choctaw...Creek...Delaware...
  Haskell...Latimer...Le Flore...Mayes...McIntosh...Muskogee...
  Okfuskee...Okmulgee...Pittsburg...Pushmataha...Rogers...
  Sequoyah...Tulsa and Wagoner.

* From Friday afternoon through Sunday morning

* Rainfall amounts of 2 to 5 inches are possible over much of
  eastern Oklahoma and western Arkansas through Saturday night,
  with locally higher amounts. Showers and thunderstorms will
  increase Friday across eastern Oklahoma and western Arkansas and
  affect portions of the area through Sunday. Tropical moisture
  is being drawn into the system from the south. The rich moisture
  will interact with a surface cold front which will stall over
  eastern Oklahoma Friday night.

* These rainfall amounts could lead to flash flooding,
  especially near low-lying areas and smaller creeks and
  streams. Minor to moderate river flooding is also possible
  over those basins which receive the highest amounts.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A flash flood watch means rapidly rising water or flooding is
possible within the watch area.

If you are in the watch area, keep informed, and be ready for
quick action if flash flooding is observed or if a warning is
issued.

&&

$$




Hazardous Weather Outlook

Hazardous Weather Outlook
National Weather Service Tulsa OK
457 PM CDT Thu Sep 20 2018

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-
457 PM CDT Thu Sep 20 2018

...HEAVY RAINFALL LIKELY FRIDAY/SATURDAY...

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

.DAY ONE...Today and Tonight.

THUNDERSTORMS WITH DANGEROUS LIGHTNING.
RISK...Limited.
AREA...Western Arkansas and far Eastern Oklahoma.
ONSET...Ongoing.

DANGEROUS HEAT.
RISK...Limited.
AREA...Eastern Oklahoma and West Central Arkansas.
ONSET...Ongoing.

FIRE WEATHER DANGER.
RISK...Elevated.
AREA...Eastern Oklahoma and Northwest Arkansas.
ONSET...Ongoing.

DISCUSSION...
Afternoon heat indices around 100 degrees are expected this
afternoon as the unseasonably hot weather continues.

Gusty southerly winds combined with the hot temperatures and recent
dry conditions will raise the potential for rapid fire spread this
afternoon.

Isolated thunderstorms will continue through early evening mainly
east of U.S. Highway 69. Severe weather is not expected with any
activity that does develop but wind gusts to 50 mph and occasional
lightning can be expected.

Showers and thunderstorms are expected to approach northeastern
Oklahoma late tonight from the west and northwest. None of this
activity is expected to be severe, although frequent lightning, wind
gusts to 50 mph, and brief but locally heavy rainfall can be
expected.

SPOTTER AND EMERGENCY MANAGEMENT ACTION STATEMENT...
Spotter Activation Not Expected.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday.
FRIDAY...Thunderstorm Potential...Heavy Rain Potential.
SATURDAY...Heavy Rain Potential.
SUNDAY...No Hazards.
MONDAY...Thunderstorm Potential.
TUESDAY...Thunderstorm Potential.
WEDNESDAY...No Hazards.

EXTENDED DISCUSSION...
A Flash Flood Watch has been issued for Friday afternoon through
Saturday night for much of eastern Oklahoma and all of western
Arkansas.

Showers and thunderstorms are expected to become widespread across
much of eastern Oklahoma and northwest Arkansas on Friday as a cold
front moves into the area. This front is expected to focus heavy
rainfall as it moves southward across the region through Sunday. An
axis of three to six inch rainfall amounts is expected to occur
across portions of eastern Oklahoma and west central Arkansas Friday
through Sunday, with locally heavier amounts likely. The location of
the heavier rain axis is uncertain at this time, but the latest
thinking is that the heaviest rainfall will focus on east central
and southeast Oklahoma as well as west central Arkansas. The heavy
rains will raise the potential for flash and river flooding.

A Fall like cold front will bring potential for more thunderstorms
early next week before cooler and much drier air puts an end to
rain and storm chances midweek.

weather.gov/tulsa contains additional information.

$$



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Silver Spring, MD 20910
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