Lala Approaching Hawaii; Flash Flooding Risks; Excessive Heat

Lala, may become a hurricane, is expected to impact Hawaii this weekend. Heavy rainfall, strong winds, dangerous surf and localized flooding are expected. Heavy rainfall and flash flooding concerns from the mid-Mississippi Valley, Ohio Valley into the central Appalachians continues, with the threat shifting toward the mid-Atlantic later this weekend. Record heat continues for areas of the South. Read More >

Hazardous Weather Conditions

Current conditions at

Grinnell Municipal Airfield (KGGI)

Lat: 41.71°NLon: 92.73°WElev: 1007ft.

N/A

Humidity	NA
Wind Speed	NA
Barometer	NA
Dewpoint	N/A
Visibility	NA
Last update	* Not a current observation *

More Information:

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

Extended Forecast for

Chelsea IA

Flood Watch August 15, 06:21am until August 15, 10:00am

Click here for hazard details and duration

...

Flood Watch August 15, 06:21am until August 15, 10:00am
NOW until 10:00am Sat
Flood Watch
Today
High: 83 °F
Chance
T-storms and
Patchy Fog
Tonight
Low: 68 °F
Chance
T-storms
Sunday
High: 83 °F
Partly Sunny
Sunday Night
Low: 60 °F
Mostly Clear
Monday
High: 82 °F
Sunny
Monday Night
Low: 62 °F
Mostly Clear
then Chance
Showers
Tuesday
High: 83 °F
Chance
T-storms
Tuesday Night
Low: 64 °F
Showers

Detailed Forecast

Today

A chance of showers and thunderstorms before 9am, then a slight chance of showers and thunderstorms after 5pm. Patchy fog before 10am. Otherwise, mostly cloudy, with a high near 83. East southeast wind around 6 mph becoming light and variable in the afternoon. Chance of precipitation is 30%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Tonight

A 40 percent chance of showers and thunderstorms, mainly before 3am. Mostly cloudy, with a low around 68. Light west northwest wind. New rainfall amounts between a quarter and half of an inch possible.

Sunday

Partly sunny, with a high near 83. North northwest wind 5 to 10 mph.

Sunday Night

Mostly clear, with a low around 60. North northwest wind 3 to 7 mph.

Monday

Sunny, with a high near 82. Light north northwest wind.

Monday Night

A 30 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 62. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Tuesday

A 30 percent chance of showers and thunderstorms, mainly after 1pm. Partly sunny, with a high near 83.

Tuesday Night

Showers and possibly a thunderstorm. Low around 64. Chance of precipitation is 80%.

Wednesday

Partly sunny, with a high near 78.

Wednesday Night

Partly cloudy, with a low around 57.

Thursday

Mostly sunny, with a high near 76.

Thursday Night

Partly cloudy, with a low around 57.