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3 products issued by NWS for: Okmulgee OK
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Hazardous Weather Outlook

Hazardous Weather Outlook
National Weather Service Tulsa OK
947 PM CDT Thu Apr 27 2017

ARZ001-002-010-011-019-020-029-OKZ049-053>076-281045-
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-
947 PM CDT Thu Apr 27 2017

...WIDESPREAD SIGNIFICANT FLASH FLOODING EXPECTED OVER PORTIONS OF
EAST CENTRAL OKLAHOMA AND NORTHWEST ARKANSAS FRIDAY NIGHT THROUGH
SATURDAY NIGHT...

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

.DAY ONE...Tonight.

THUNDERSTORMS WITH DANGEROUS LIGHTNING.
RISK...Limited.
AREA...Northeast Oklahoma and Northwest Arkansas.
ONSET...Ongoing.

DISCUSSION...
Scattered showers along with isolated embedded thunderstorms will
continue to push across Northeast Oklahoma and Northwest Arkansas
overnight tonight as a mid level disturbance moves through the
Plains. Severe weather is not anticipated tonight.

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

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

EXTENDED DISCUSSION...
A Flash Flood Watch is in effect for portions of northeast
Oklahoma and western Arkansas beginning Friday night. An upper
level storm system will approach the Four Corners region late
Friday, bringing both the potential for severe weather and
heavy rain. At the surface, a warm front will lift north
across central and eastern Oklahoma on Friday afternoon. This
will serve as a focus for late afternoon showers and
thunderstorms. Given the favorable shear and instability that
will be in place south of the warm front Friday afternoon,
scattered severe thunderstorms are expected with the potential
for large hail and damaging winds. Tornadoes are possible as
well, particularly with any discrete storms which form early
in the evolution of the event.

Eventually, storms are forecast to develop into a large complex.
Strong southerly low level flow will transport abundant moisture
over the surface boundary across Oklahoma resulting in storms
forming over and over across the same areas. This setup is
expected to be maintained over portions of eastern Oklahoma and
western Arkansas for a significant time beginning Friday night and
ending by Sunday morning. Widespread storm total rain amounts of
4 to 8 inches appear likely with isolated higher amounts. This
will result in a major flash flooding and river flooding event
through the weekend.

EMERGENCY MANAGEMENT PLANNING STATEMENT...
Continue to follow the latest updates regarding the expected
hazardous weather that will affect much of the area by this
weekend.

weather.gov/tulsa Contains additional information.

$$



Short Term Forecast

Short Term Forecast
National Weather Service Tulsa OK
127 AM CDT Fri Apr 28 2017

ARZ001-002-010-011-019-020-029-OKZ049-053>076-280800-
Benton-Carroll-Washington AR-Madison-Crawford-Franklin-Sebastian-
Pushmataha-Choctaw-Osage-Washington OK-Nowata-Craig-Ottawa-Pawnee-
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, Pawhuska,
Bartlesville, Nowata, Vinita, Miami, Pawnee, Tulsa, Claremore,
Pryor, Grove, Jay, Sapulpa, Okemah, Okmulgee, Wagoner, Tahlequah,
Stilwell, Muskogee, Checotah, Sallisaw, McAlester, Stigler,
Wilburton, and Poteau
127 AM CDT Fri Apr 28 2017

.NOW...

At 1:15 am, National Weather Service Doppler radar detected
a band of showers and isolated thunderstorms across northeast
Oklahoma, right along or just south of I-44. Other more isolated
showers were located down near the I-40 corridor in east central
Oklahoma. The precipitation was moving east northeast at 40 miles
an hour.

Through 3 am, the band of showers and isolated thunderstorms will
continue across northeast Oklahoma near the I-44 corridor and may
affect far northwest Arkansas at times. Hourly rainfall rates of
up to a half inch per hour can be expected with the embedded
thunderstorms.

$$

Lacy



Flash Flood Watch

Flood Watch
National Weather Service Tulsa OK
336 PM CDT Thu Apr 27 2017

...WIDESPREAD AND POTENTIALLY LIFE THREATENING FLASH FLOODING
EXPECTED FRIDAY NIGHT THROUGH SATURDAY EVENING WITH MODERATE
TO MAJOR MAIN-STEM RIVER FLOODING POSSIBLE...

ARZ001-002-010-011-019-020-029-OKZ049-057-058-060>076-281030-
/O.CON.KTSA.FF.A.0002.170429T0000Z-170430T1200Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Benton-Carroll-Washington AR-Madison-Crawford-Franklin-Sebastian-
Pushmataha-Craig-Ottawa-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, Vinita, Miami,
Tulsa, Claremore, Pryor, Grove, Jay, Sapulpa, Okemah, Okmulgee,
Wagoner, Tahlequah, Stilwell, Muskogee, Checotah, Sallisaw,
McAlester, Stigler, Wilburton, and Poteau
336 PM CDT Thu Apr 27 2017

...FLASH FLOOD WATCH REMAINS IN EFFECT FROM FRIDAY EVENING
THROUGH 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...Craig...Creek...Delaware...
  Haskell...Latimer...Le Flore...Mayes...McIntosh...Muskogee...
  Okfuskee...Okmulgee...Ottawa...Pittsburg...Pushmataha...
  Rogers...Sequoyah...Tulsa and Wagoner.

* From Friday evening through Sunday morning

* A potent upper level storm system will move into the area
  Friday with strong to severe thunderstorms developing by early
  evening across portions of eastern Oklahoma and northwest
  Arkansas. Thunderstorms will continue Friday night through
  Saturday evening with locally heavy rainfall as a frontal
  boundary slowly pushes southeast. 4 to 8 inches of rainfall
  are expected across east-central Oklahoma and northwest
  Arkansas with locally higher amounts approaching 12 inches.

* The heavy rainfall will likely lead to widespread and
  potentially life threatening flash flooding. Several rivers
  will likely go into moderate to major flood including the
  Illinois river and Lee Creek at Van Buren. Beaver Lake dam in
  northwest Arkansas could begin to release water which would
  impact areas downstream.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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. Persons living in low lying areas along main-stem rivers
should monitor the latest forecast and be ready to evacuate to
higher ground.

Do not drive your vehicle into areas where water covers the road
to unknown depths. Take a different route to reach your
destination or wait until the water recedes. Remember, most flood
related deaths occur in automobiles and flooding is the leading
cause of weather related deaths.

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

&&

$$



U.S. Dept. of Commerce
NOAA National Weather Service
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Silver Spring, MD 20910
E-mail: w-nws.webmaster@noaa.gov
Page last modified: May 16, 2007
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