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

Brooklyn IA

Flood Watch August 14, 11:53pm until August 15, 10:00am

Click here for hazard details and duration

Flood Watch

Flood Watch August 14, 11:53pm until August 15, 10:00am
NOW until 10:00am Sat
Flood Watch
Tonight
Low: 73 °F
Chance
T-storms and
Patchy Fog
Saturday
High: 89 °F
Chance
Showers and
Patchy Fog
then Slight
Chance
T-storms
Saturday Night
Low: 68 °F
T-storms
Likely
Sunday
High: 82 °F
Chance
T-storms
Sunday Night
Low: 60 °F
Mostly Clear
Monday
High: 82 °F
Sunny
Monday Night
Low: 61 °F
Mostly Clear
Tuesday
High: 84 °F
Partly Sunny
then Slight
Chance
T-storms

Detailed Forecast

Tonight

A 40 percent chance of showers and thunderstorms. Patchy fog after 2am. Otherwise, cloudy, with a steady temperature around 73. East wind around 7 mph. New rainfall amounts between three quarters and one inch possible.

Saturday

A chance of showers and thunderstorms before 8am, then a slight chance of showers and thunderstorms after 5pm. Patchy fog before 10am. Otherwise, partly sunny, with a high near 89. Heat index values as high as 103. South southeast wind around 6 mph becoming west northwest 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.

Saturday Night

Showers and thunderstorms likely, mainly before 5am. Mostly cloudy, with a low around 68. Light northwest wind. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Sunday

A 30 percent chance of showers and thunderstorms, mainly before 7am. Partly sunny, with a high near 82. Light northwest wind becoming north northwest 5 to 9 mph in the morning. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Sunday Night

Mostly clear, with a low around 60. North northwest wind 5 to 7 mph becoming calm in the evening.

Monday

Sunny, with a high near 82.

Monday Night

Mostly clear, with a low around 61.

Tuesday

A 20 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 84.

Tuesday Night

Showers likely, with thunderstorms also possible after 1am. Mostly cloudy, with a low around 64. Chance of precipitation is 70%.

Wednesday

Partly sunny, with a high near 80.