Excessive Heat Warning 4, NWS Tulsa, OK

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Hazardous Weather Outlook
National Weather Service Tulsa OK
400 PM CDT Sat Aug 10 2019

ARZ001-002-010-011-019-020-029-OKZ049-053>076-111030-
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-
400 PM CDT Sat Aug 10 2019

...VERY DANGEROUS HEAT THIS AFTERNOON...

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

.DAY ONE...This Afternoon and Tonight.

THUNDERSTORMS WITH DANGEROUS LIGHTNING.
	RISK...Limited.
	AREA...East of I-49 in northwest Arkansas.
	ONSET...Ongoing.

DANGEROUS HEAT.
	RISK...Significant.
	AREA...Eastern Oklahoma and west central Arkansas.
	ONSET...Ongoing.

DISCUSSION...

Very dangerous heat and humidity is ongoing across much of eastern
Oklahoma and west central Arkansas this afternoon. Maximum heat
index values from 110 to 115 degrees are occurring.

Isolated thunderstorms are possible this afternoon across northwest
Arkansas to the east of I-49, and again later tonight in areas near
the Kansas and Missouri borders. Severe weather is not expected, but
the storms will bring dangerous lightning and brief heavy downpours.

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

.DAYS TWO THROUGH SEVEN...Sunday through Friday.
SUNDAY...Dangerous Heat Potential.
MONDAY through TUESDAY...Thunderstorm Potential...Dangerous Heat
Potential.
WEDNESDAY...Thunderstorm Potential.
THURSDAY and FRIDAY...No Hazards.

EXTENDED DISCUSSION...
Dangerous heat and humidity will again affect most of eastern
Oklahoma and west central Arkansas both tomorrow and Monday
afternoons. Maximum heat indices will be similar to today's
values. A Heat Advisory has also been posted for tomorrow
afternoon from 1 pm to 8 pm for much of the area, with additional
heat advisories or warnings for at least a portion of the area
probable early next week.

Thunderstorm chances will begin to increase from north to south
late Monday night and continue into Tuesday and Wednesday as a
front moves through the region. Dangerous heat index values will
be likely again on Tuesday for areas south of the slow moving
front, but cooler conditions will arrive for the middle to latter
part of the work week following the frontal passage.

weather.gov/tulsa contains additional information.