• Thunderstorm Chances Return

    DSM Almanac: High Yesterday: 83 Precip: Average High Today: 81 Record High Today: 97 (1952) Low: 43 (1903) Sunrise: 5:40 Sunset: 8:49

    U.S. High Temperature for Wednesday, June 11, 2014
    (as received by 2 am EDT June 12)
    115 at Death Valley, CA

    Low Temperature for Wednesday, June 11, 2014
    (as received by 2 am EDT June 12)
    25 at Stanley, ID

    On This Date in Iowa Weather History (courtesy of the NWS): 2001: Several rounds of severe thunderstorms and heavy rainfall affected portions of central and northwestern Iowa through much of the day. An outflow boundary lying roughly along the Interstate 80 corridor in central Iowa was the focus for multiple rounds of training thunderstorms that developed just before sunrise and persisted into the early aternoon. One particularly severe cluster of thunderstorms produced very large hail across western portions of the Des Moines metro area, with golf ball to baseball sized hail falling for up to 25 minutes in West Des Moines, Waukee, Clive, and Urbandale. There was significant damage to thousands of homes and vehicles, and several large car dealerships hit with damage in the hundreds of thousands of dollars at each one. Some cars had their windows completely broken out and roofs badly dented. Further east around Grinnell and Montezuma up to 4 inches of rain fell along with golf ball sized hail that drifted to more than 2 feet deep in some places. In the later morning hours heavy rain became the dominant threat with flash flooding reported across much of Greene, Boone, Dallas, and Story counties and numerous roads closed due to high water.

    1976: A significant severe weather outbreak struck Iowa with large hail up to baseball size and very heavy rain falling at some locations. Near Atlantic 5 inches of rain was reported and about 6 inches fell northeast of Audubon, causing flash flooding along Bull Creek, the Nishnabotna River, and the South Raccoon River with several small bridges washed out and widespread crop damage. Strong winds gusting to as high as 75 to 80 mph also damaged trees, power lines, and farm buildings across the area. Baseball sized hail fell for nearly 20 minutes near Ledyard in Kossuth County. In Franklin County a large aircraft hangar was destroyed, and a food processing plant was severely damaged at Ackley. Several tornadoes were also reported, including one that touched down intermittently along a path from around Booneville, between Waukee and Grimes, near Polk City and Alleman, and lifting around Maxwell. The same storm that produced this intermittent tornado track also dropped hail larger than hens eggs in some parts of Des Moines.

    Your KCWI-23HD Great Day 7-Day Forecast:

    Today: Isolated showers south in the morning… decreasing clouds… breezy… 75. NW winds 10-20 mph.

    Tonight: Partly cloudy and cool… 51. NW 5-15.

    Friday: Mostly sunny… 76. N becoming SE around 5 mph.

    Saturday: Mostly cloudy and breezy… 30% storm chance, mainly in the western half of Iowa… 83.

    Sunday (Fathers’ Day): 80% storm chance… 83.

    Monday: 20% storm chance early and again late… mostly cloudy… 84.

    Tuesday: Mostly cloudy… 50% storm chance… 83.

    Wednesday: Mostly cloudy… 20% storm chance… 82.

  • Weather Journal