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

Heat Advisory in effect from August 20, 12:00 PM MDT until August 21, 09:00 PM MDT

Current conditions at

Joslin Field - Magic Valley Regional Airport (KTWF)

Lat: 42.4785°NLon: 114.47739°WElev: 4163.0ft.

Clear

86°F

30°C

Humidity	17%
Wind Speed	E 3 MPH
Barometer	30.01 in (1016.26 mb)
Dewpoint	38°F (3°C)
Visibility	10.00 mi
Heat Index	83°F (28°C)
Last update	19 Aug 08:00 PM MDT

More Information:

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

Extended Forecast for

2 Miles SE Twin Falls ID

Heat Advisory August 20, 12:00pm until August 21, 09:00pm

Click here for hazard details and duration

Heat Advisory

Tonight
Low: 61 °F
Mostly Clear
Thursday
High: 98 °F
Hot
Thursday Night
Low: 64 °F
Mostly Cloudy
Friday
High: 99 °F
Mostly Sunny
then Slight
Chance
T-storms
Friday Night
Low: 70 °F
Slight Chance
T-storms then
Mostly Cloudy
Saturday
High: 93 °F
Hot
Saturday Night
Low: 63 °F
Mostly Cloudy
Sunday
High: 88 °F
Mostly Sunny
then Slight
Chance
T-storms
Sunday Night
Low: 59 °F
Partly Cloudy

Detailed Forecast

Tonight

Mostly clear, with a low around 61. East wind around 5 mph becoming light and variable.

Thursday

Sunny and hot, with a high near 98. East wind 5 to 8 mph becoming northwest in the afternoon.

Thursday Night

Mostly cloudy, with a low around 64. Northwest wind 5 to 7 mph becoming south southeast after midnight.

Friday

A 20 percent chance of showers and thunderstorms after 5pm. Mostly sunny and hot, with a high near 99. Calm wind becoming east 5 to 7 mph in the afternoon.

Friday Night

A slight chance of showers and thunderstorms before 9pm, then a slight chance of showers between 9pm and 10pm. Mostly cloudy, with a low around 70. East wind 6 to 9 mph becoming south in the evening. Chance of precipitation is 20%.

Saturday

Partly sunny and hot, with a high near 93.

Saturday Night

Mostly cloudy, with a low around 63.

Sunday

A 20 percent chance of showers and thunderstorms after noon. Mostly sunny, with a high near 88.

Sunday Night

Partly cloudy, with a low around 59.

Monday

Mostly sunny, with a high near 89.

Monday Night

Mostly cloudy, with a low around 60.