082 WWUS53 KDMX 170908 SVSDMX Severe Weather Statement National Weather Service Des Moines IA 408 AM CDT Wed Jun 17 2026 IAC025-151-161-170945- /O.CON.KDMX.SV.W.0230.000000T0000Z-260617T0945Z/ Pocahontas IA-Sac IA-Calhoun IA- 408 AM CDT Wed Jun 17 2026 ...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 445 AM CDT FOR SOUTHERN POCAHONTAS...NORTHEASTERN SAC AND CALHOUN COUNTIES... At 407 AM CDT, a severe thunderstorm was located near Pomeroy, or 12 miles northwest of Rockwell City, moving southeast at 60 mph. HAZARD...60 mph wind gusts and quarter size hail. SOURCE...A 67 mph wind gust was measured at the Storm Lake airport. IMPACT...Hail damage to vehicles is expected. Expect wind damage to roofs, siding, and trees. Locations impacted include... Pocahontas, Rockwell City, Manson, South Twin Lake, North Twin Lake, Pomeroy, Fonda, Lohrville, Twin Lakes, Palmer, Varina, Knierim, Rinard, Jolley, Pocahontas Municipal Airport, Twin Lakes State Park, and Rockwell City Municipal Airport. PRECAUTIONARY/PREPAREDNESS ACTIONS... For your protection move to an interior room on the lowest floor of a building. && LAT...LON 4256 9492 4283 9491 4269 9444 4221 9444 4256 9511 TIME...MOT...LOC 0907Z 295DEG 52KT 4255 9475 HAIL THREAT...RADAR INDICATED MAX HAIL SIZE...1.00 IN WIND THREAT...RADAR INDICATED MAX WIND GUST...60 MPH $$ Donavon 173 WWUS53 KDMX 170921 SVSDMX Severe Weather Statement National Weather Service Des Moines IA 421 AM CDT Wed Jun 17 2026 IAC025-151-161-170945- /O.CON.KDMX.SV.W.0230.000000T0000Z-260617T0945Z/ Pocahontas IA-Sac IA-Calhoun IA- 421 AM CDT Wed Jun 17 2026 ...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 445 AM CDT FOR SOUTHERN POCAHONTAS...NORTHEASTERN SAC AND CALHOUN COUNTIES... At 420 AM CDT, a severe thunderstorm was located over Jolley, or 8 miles northwest of Rockwell City, moving east at 55 mph. HAZARD...60 mph wind gusts and quarter size hail. SOURCE...A 67 mph wind gust was measured at the Storm Lake airport. IMPACT...Hail damage to vehicles is expected. Expect wind damage to roofs, siding, and trees. Locations impacted include... Rockwell City, Manson, South Twin Lake, North Twin Lake, Pomeroy, Fonda, Lohrville, Twin Lakes, Palmer, Knierim, Rinard, Jolley, Twin Lakes State Park, and Rockwell City Municipal Airport. PRECAUTIONARY/PREPAREDNESS ACTIONS... For your protection move to an interior room on the lowest floor of a building. && LAT...LON 4264 9492 4266 9475 4269 9444 4221 9444 4256 9511 4256 9492 TIME...MOT...LOC 0920Z 273DEG 47KT 4250 9473 HAIL THREAT...RADAR INDICATED MAX HAIL SIZE...1.00 IN WIND THREAT...RADAR INDICATED MAX WIND GUST...60 MPH $$ Donavon 461 WWUS51 KLWX 170936 SVSLWX Severe Weather Statement National Weather Service Baltimore MD/Washington DC 536 AM EDT Wed Jun 17 2026 MDC037-170945- /O.CON.KLWX.SV.W.0150.000000T0000Z-260617T0945Z/ St. Marys MD- 536 AM EDT Wed Jun 17 2026 ...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 545 AM EDT FOR EASTERN ST. MARYS COUNTY... At 536 AM EDT, a severe thunderstorm was located 8 miles east of Saint Inigoes Creek, moving east at 25 mph. HAZARD...60 mph wind gusts and quarter size hail. SOURCE...Radar indicated. IMPACT...Damaging winds will cause some trees and large branches to fall. This could injure those outdoors, as well as damage homes and vehicles. Roadways may become blocked by downed trees. Localized power outages are possible. Unsecured light objects may become projectiles. This severe thunderstorm will remain over mainly rural areas of eastern St. Marys County. PRECAUTIONARY/PREPAREDNESS ACTIONS... For your protection move to an interior room on the lowest floor of a building. && LAT...LON 3811 7631 3806 7631 3808 7636 3818 7633 3814 7630 TIME...MOT...LOC 0936Z 284DEG 21KT 3810 7623 HAIL THREAT...RADAR INDICATED MAX HAIL SIZE...1.00 IN WIND THREAT...RADAR INDICATED MAX WIND GUST...60 MPH $$ KLW 389 WWUS53 KDMX 170940 SVSDMX Severe Weather Statement National Weather Service Des Moines IA 440 AM CDT Wed Jun 17 2026 IAC015-025-073-079-187-171015- /O.CON.KDMX.SV.W.0231.000000T0000Z-260617T1015Z/ Greene IA-Webster IA-Calhoun IA-Hamilton IA-Boone IA- 440 AM CDT Wed Jun 17 2026 ...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 515 AM CDT FOR NORTHEASTERN GREENE...WEBSTER...CALHOUN...WESTERN HAMILTON AND NORTHWESTERN BOONE COUNTIES... At 439 AM CDT, a severe thunderstorm was located over Somers, or 8 miles east of Rockwell City, moving east at 55 mph. HAZARD...70 mph wind gusts and half dollar size hail. SOURCE...Emergency management reported semis blown over on Highway 20. IMPACT...Hail damage to vehicles is expected. Expect considerable tree damage. Wind damage is also likely to mobile homes, roofs, and outbuildings. Locations impacted include... Fort Dodge, Webster City, Rockwell City, Lake City, Manson, Gowrie, North Twin Lake, Fort Dodge Regional Airport, South Twin Lake, Dayton, Stratford, Coalville, Otho, Lehigh, Duncombe, Callender, Farnhamville, Lohrville, Twin Lakes, and Harcourt. PRECAUTIONARY/PREPAREDNESS ACTIONS... Prepare immediately for large hail and damaging winds. People outside should move to a shelter, inside a strong building and away from windows. && LAT...LON 4256 9461 4256 9373 4207 9396 4229 9483 TIME...MOT...LOC 0939Z 283DEG 49KT 4237 9446 THUNDERSTORM DAMAGE THREAT...CONSIDERABLE HAIL THREAT...RADAR INDICATED MAX HAIL SIZE...1.25 IN WIND THREAT...RADAR INDICATED MAX WIND GUST...70 MPH $$ Donavon