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Preliminary Storm Summary of May 21 Tornadoes and Flash Floods Across Iowa
National Water Prediction Service Replaces Advanced Hydrologic Prediction Service

Hazardous Weather Conditions

Hazardous Weather Outlook

Current conditions at

Des Moines International Airport (KDSM)

Lat: 41.53°NLon: 93.65°WElev: 942ft.

Overcast

69°F

21°C

Humidity	53%
Wind Speed	SE 9 mph
Barometer	30.08 in (1017.9 mb)
Dewpoint	51°F (11°C)
Visibility	10.00 mi
Last update	30 May 11:54 pm CDT

More Information:

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

Extended Forecast for

Des Moines IA

Overnight
Low: 64 °F
Chance
Showers
Friday
High: 75 °F
Chance
Showers
Friday Night
Low: 62 °F
Chance
T-storms
Saturday
High: 80 °F
Decreasing
Clouds
Saturday Night
Low: 60 °F
Partly Cloudy
Sunday
High: 83 °F
Chance
T-storms
Sunday Night
Low: 67 °F
Chance
T-storms then
Showers
Likely
Monday
High: 83 °F
Chance
T-storms
Monday Night
Low: 63 °F
Chance
T-storms

Detailed Forecast

Overnight

A chance of showers, with thunderstorms also possible after 4am. Mostly cloudy, with a steady temperature around 64. East southeast wind 5 to 7 mph. Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Friday

A chance of showers and thunderstorms before 7am, then a chance of showers between 7am and 4pm, then a chance of showers and thunderstorms after 4pm. Cloudy, with a high near 75. South southeast wind 6 to 10 mph. Chance of precipitation is 40%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Friday Night

A 30 percent chance of showers and thunderstorms, mainly before 10pm. Cloudy, with a low around 62. East southeast wind 3 to 8 mph. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Saturday

Mostly cloudy, then gradually becoming sunny, with a high near 80. Light and variable wind becoming northwest around 6 mph in the afternoon.

Saturday Night

Partly cloudy, with a low around 60. West southwest wind around 5 mph becoming light and variable in the evening.

Sunday

A slight chance of showers, then a chance of showers and thunderstorms after 10am. Mostly sunny, with a high near 83. Chance of precipitation is 40%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Sunday Night

A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 67. Chance of precipitation is 70%.

Monday

A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 83.

Monday Night

A 30 percent chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 63.

Tuesday

A 30 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 85.

Tuesday Night

Showers and thunderstorms likely. Partly cloudy, with a low around 64. Chance of precipitation is 60%.

Wednesday

A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 81.

Wednesday Night

Partly cloudy, with a low around 61.