Weather Alerts For De Smet, SD

# HEADLINE -------------------- RED FLAG WARNING REMAINS IN EFFECT FROM NOON TO 8 PM CDT WEDNESDAY FOR WIND AND LOW RELATIVE HUMIDITY FOR SOUTH CENTRAL AND SOUTHEASTERN SOUTH DAKOTA, FAR NORTHEASTERN NEBRASKA, FAR NORTHWESTERN IOWA, AND SOUTHWESTERN MINNESOTA # DETAILS -------------------- AFFECTED AREA In Iowa, Lyon, Osceola and Sioux. In Minnesota, Lincoln, Lyon, Murray, Cottonwood, Nobles, Jackson, Pipestone and Rock. In Nebraska, Dixon and Dakota. In South Dakota, Beadle, Kingsbury, Brookings, Gregory, Jerauld, Sanborn, Miner, Lake, Moody, Brule, Aurora, Davison, Hanson, McCook, Minnehaha, Charles Mix, Douglas, Hutchinson, Turner, Lincoln, Bon Homme, Yankton, Clay and Union. WINDS South 20 to 30 mph with gusts up to 45 mph. RELATIVE HUMIDITY As low as 17 percent. IMPACTS Any fire that develops will catch and spread quickly. Outdoor burning is not recommended. ISSUED AT Tuesday, April 21, 2026 at 8:45 PM CDT ISSUED BY National Weather Service Sioux Falls SD HEADER URGENT - FIRE WEATHER MESSAGE # PRECAUTIONARY/PREPAREDNESS ACTIONS -------------------- A Red Flag Warning means that critical fire weather conditions are either occurring now, or will shortly. A combination of strong winds, low relative humidity, and warm temperatures can contribute to extreme fire behavior. # AREAS AFFECTED -------------------- Jerauld, McCook, Pipestone, Yankton, Aurora, Beadle, Bon Homme, Brookings, Brule, Charles Mix, Clay, Cottonwood, Dakota, Davison, Dixon, Douglas, Gregory, Hanson, Hutchinson, Jackson, Kingsbury, Lake, Lincoln, Lyon, Miner, Minnehaha, Moody, Murray, Nobles, Osceola, Rock, Sanborn, Sioux, Turner, Union

Pollen Index: 10.8 Pollen Level: high Predominant Pollen: Cedar/Juniper, Poplar/Aspen/Cottonwood and Elm. Concentration of pollen grains in the air for Wednesday will be on the increase and extend even further into the extremely high range. This higher level is caused in part by rising temperatures, strong winds and lower relative humidity.