What in the Weather?

Jul 31, 2025

Main Topic: "Corn Sweat" Phenomenon

• Definition & Media Coverage
  • "Corn sweat" is simply a catchy term for evapotranspiration
  • Justin Glisan was interviewed by major news outlets (Washington Post, CNN, USA Today, CBS)
  • The phenomenon was trending during the hottest week of July 2025 during a heat dome

Jul 24, 2025

Historical Weather (This Day in History - 1993)

• Severe thunderstorms moved from Nebraska to western Iowa at 60 mph
• Wind gusts exceeded 70 mph, with 75 mph winds in Pottawattamie County destroying barns
• Council Bluffs received 2 inches of rain in 30 minutes causing urban flooding
• Des Moines recorded 83 mph wind gust

Jul 17, 2025

• Weather History

  • On July 17, 1972, slow-moving morning thunderstorms dropped 5.5 inches of rain at Sioux City, setting the all-time daily rainfall record there (still standing). Other highlights: 4.63 inches at Sac City, 3.45 inches at Humboldt.

• Short-Term Weather Outlook

  • Cool air has returned after a recent...

Jul 11, 2025

Recent Iowa Weather Highlights

• Heavy Rainfall:

  • Rain gauges in the Des Moines area report 1–2.2 inches; some areas in western/central Iowa received up to 6 inches in the past week.

  • Southeast Iowa remains much drier, with some locations getting less than 0.1 inch.

   

• Historical Context:

  • July 11, 1993: Major...

Jul 3, 2025

• Iowa Weather History:

  • On July 3, 2001, severe thunderstorms in southern Iowa produced very large hail: 2.5-inch stones at Osceola, 3-inch at Otley, and 4-inch at Truro, causing widespread and extensive damage.

• Recent Severe Weather Trends:

  • Hail has been infrequent this year, with the most recent notable event...