Severe Thunderstorms in the Midwest and Arizona; Heat Continues in the Southeast and Southwest

Thunderstorms, some severe, may lead to scattered instances of flash flooding across the Midwest and Ohio Valley and southern Arizona. The threat will shift to the Mid-Atlantic coast on Thursday. Dangerous heat persists in the South and Southeast while building into the Southwest. Overnight lows will be so warm that little-to-no relief from the scorching daytime highs will be available. Read More >

Hazardous Weather Conditions

Current conditions at

McAlester, McAlester Regional Airport (KMLC)

Lat: 34.88°NLon: 95.78°WElev: 768ft.

Fair

77°F

25°C

Humidity	69%
Wind Speed	Calm
Barometer	29.91 in (1011.5 mb)
Dewpoint	66°F (19°C)
Visibility	10.00 mi
Heat Index	79°F (26°C)
Last update	20 Aug 3:53 am CDT

More Information:

Local Forecast Office More Local Wx 3 Day History Hourly Weather Forecast

Extended Forecast for

Longtown OK

Heat Advisory August 20, 01:00pm until August 20, 08:00pm

Click here for hazard details and duration

Heat Advisory

Overnight
Low: 80 °F
Slight Chance
T-storms
Thursday
High: 100 °F
Slight Chance
T-storms
Thursday Night
Low: 77 °F
Slight Chance
T-storms then
Mostly Clear
Friday
High: 99 °F
Sunny
Friday Night
Low: 79 °F
Mostly Clear
then Slight
Chance
T-storms
Saturday
High: 99 °F
Mostly Sunny
Saturday Night
Low: 79 °F
Mostly Clear
Sunday
High: 96 °F
Mostly Sunny
Sunday Night
Low: 80 °F
Mostly Clear
then Slight
Chance
T-storms

Detailed Forecast

Overnight

A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 80. Calm wind.

Thursday

A slight chance of showers and thunderstorms before 1pm, then a slight chance of showers between 1pm and 4pm, then a slight chance of showers and thunderstorms after 4pm. Mostly sunny and hot, with a high near 100. Heat index values as high as 108. Southeast wind around 5 mph becoming calm. Chance of precipitation is 20%.

Thursday Night

A slight chance of thunderstorms before 7pm. Mostly clear, with a low around 77. Calm wind becoming east around 5 mph. Chance of precipitation is 10%.

Friday

Sunny, with a high near 99. Heat index values as high as 105. Calm wind becoming northeast around 5 mph.

Friday Night

A 20 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 79. East wind around 5 mph becoming south after midnight.

Saturday

Mostly sunny, with a high near 99. South wind around 5 mph becoming northeast in the afternoon.

Saturday Night

Mostly clear, with a low around 79. Northeast wind around 5 mph becoming southeast in the evening.

Sunday

Mostly sunny, with a high near 96. Southeast wind around 5 mph.

Sunday Night

A 20 percent chance of showers and thunderstorms after 1am. Mostly clear, with a low around 80. Southeast wind around 5 mph.

Monday

Mostly sunny, with a high near 99. South wind 5 to 10 mph, with gusts as high as 20 mph.

Monday Night

Mostly clear, with a low around 81. South wind 5 to 10 mph.