Watching Hurricane Erin; Heavy Rainfall Threat for Upper Midwest; Heatrisk for Mississippi Valley

Hurricane Erin continues to track westward with its outer bands bringing heavy rainfall and gusty winds for Puerto Rico and US Virgin Islands. Life-threatening surf and rip currents are occurring and will spread across the Atlantic coasts this week. Meanwhile, heavy rainfall and possible flooding are in the forecast for upper Midwest through Monday. Heatrisk continues for the Mississippi Valley. Read More >

Hazardous Weather Conditions

Flash Flood Watch in effect from August 17, 03:00 PM MDT until August 18, 12:00 AM MDT

Current conditions at

Ontario Municipal Airport (KONO)

Lat: 44.01424°NLon: 117.00808°WElev: 2185.0ft.

Clear

77°F

25°C

Humidity	47%
Wind Speed	S 4 MPH
Barometer	30.02 in (1016.59 mb)
Dewpoint	55°F (13°C)
Visibility	10.00 mi
Heat Index	79°F (26°C)
Last update	17 Aug 12:35 PM MDT

More Information:

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

Extended Forecast for

19 Miles WSW Vale OR

Flash Flood Watch August 17, 03:00pm until August 18, 12:00am

Click here for hazard details and duration

Flash Flood Watch

This Afternoon
High: 89 °F
Isolated
T-storms
Tonight
Low: 64 °F
Scattered
T-storms
Monday
High: 94 °F
Hot
Monday Night
Low: 63 °F
Mostly Clear
Tuesday
High: 97 °F
Hot
Tuesday Night
Low: 63 °F
Mostly Clear
Wednesday
High: 96 °F
Hot
Wednesday Night
Low: 61 °F
Clear
Thursday
High: 94 °F
Hot

Detailed Forecast

This Afternoon

Isolated showers and thunderstorms. Sunny, with a high near 89. Calm wind becoming southeast 5 to 8 mph. Chance of precipitation is 20%.

Tonight

Scattered showers and thunderstorms, mainly before midnight. Mostly cloudy, with a low around 64. Southeast wind 5 to 9 mph becoming calm in the evening. Chance of precipitation is 40%.

Monday

Sunny and hot, with a high near 94. Calm wind becoming southwest 5 to 7 mph in the afternoon.

Monday Night

Mostly clear, with a low around 63. Light and variable wind becoming west 5 to 9 mph after midnight.

Tuesday

Sunny and hot, with a high near 97. Calm wind becoming east around 5 mph in the afternoon.

Tuesday Night

Mostly clear, with a low around 63.

Wednesday

Sunny and hot, with a high near 96.

Wednesday Night

Clear, with a low around 61.