Strong Storms and Heavy Rainfall Threats; Dangerous Heat for Southern Plains into the Southwest

Thunderstorms, some severe, will impact areas of the Plains into the Midwest today. Rainfall can be locally heavy as well from these storms with isolated instances of flash flooding. Monsoonal flow will enhance rainfall across the Four Corners into the central Rockies today. Meanwhile, summer heat continues for the southern Plains, Southwest into southern California. Read More >

Hazardous Weather Conditions

Current conditions at

McKinney - McKinney National Airport (KTKI)

Lat: 33.18°NLon: 96.59°WElev: 584ft.

Fair

98°F

37°C

Humidity	34%
Wind Speed	S 14 mph
Barometer	29.95 in (1013.1 mb)
Dewpoint	65°F (18°C)
Visibility	10.00 mi
Heat Index	101°F (38°C)
Last update	25 Aug 1:53 pm CDT

More Information:

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

Extended Forecast for

2 Miles S Van Alstyne TX

Heat Advisory August 25, 09:00pm until August 26, 09:00pm

Extreme Heat Warning August 25, 02:11pm until August 25, 09:00pm

Click here for hazard details and duration

Heat Advisory

Extreme Heat Warning

Extreme Heat Warning August 25, 02:11pm until August 25, 09:00pm
NOW until 9:00pm Tue
Extreme Heat Warning
This Afternoon
High: 103 °F
Hot
Tonight
Low: 81 °F
Mostly Clear
Wednesday
High: 99 °F
Mostly Sunny
then Slight
Chance
T-storms
Wednesday Night
Low: 76 °F
Slight Chance
T-storms then
Slight Chance
Showers
Thursday
High: 97 °F
Sunny
Thursday Night
Low: 73 °F
Mostly Clear
Friday
High: 97 °F
Sunny
Friday Night
Low: 72 °F
Clear

Detailed Forecast

This Afternoon

Sunny and hot, with a high near 103. South southwest wind around 15 mph, with gusts as high as 20 mph.

Tonight

Mostly clear, with a low around 81. South wind 10 to 15 mph, with gusts as high as 20 mph.

Wednesday

A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny and hot, with a high near 99. Heat index values as high as 104. South southwest wind around 10 mph becoming north in the afternoon.

Wednesday Night

A slight chance of showers and thunderstorms before 10pm, then a slight chance of showers after 1am. Partly cloudy, with a low around 76. West northwest wind around 5 mph becoming north northeast in the evening. Chance of precipitation is 20%.

Thursday

Sunny, with a high near 97. North northeast wind 5 to 10 mph.

Thursday Night

Mostly clear, with a low around 73. Northeast wind 5 to 10 mph.

Friday

Sunny, with a high near 97. East northeast wind 5 to 10 mph.

Friday Night

Clear, with a low around 72. East wind around 5 mph.

Saturday

Sunny, with a high near 97. South southeast wind 5 to 10 mph.

Saturday Night

Clear, with a low around 75.