A narrow swath of accumulating wet snow developed on April 27th during the day, and continued into the early evening hours. Most of this snow melted on contact with the ground over northeast Iowa and northern Illinois, but in northern sections of Jo Daviess and Stephenson counties, 4 to 7 inches of snow fell, and accumulated mainly on grass.
Every event with a place to put it; 2 filed by county or forecast zone are drawn at its center, in a lighter ring. Tap one for its entry below.
Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.
The episode as NWS DVN wrote it up.
A narrow swath of accumulating wet snow developed on April 27th during the day, and continued into the early evening hours. Most of this snow melted on contact with the ground over northeast Iowa and northern Illinois, but in northern sections of Jo Daviess and Stephenson counties, 4 to 7 inches of snow fell, and accumulated mainly on grass. Despite these snow amounts, the roads were mainly wet to slush covered during the event. However, the heavy snow did result in an extended period of very low visibility and dangerous travel in far northwest Illinois.
The local office's own words before the first event, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Quad Cities, IA wrote its last area forecast discussion before the first event at Apr 27, 6:06 AM CST, 54 minutes earlier.
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</html>The national radar mosaic for the moment the first event began.
2 heavy snow. Local standard time, as filed.
A National Weather Service COOP observer reported 6 inches of wet snow accumulation on grassy surfaces, 3 miles north of Stockton, Illinois.
A public report of 7 inches of snow in Lena, Illinois was received through social media, including photos of the snow event.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Illinois in 2019Every state in 2019This day in weather historyWarnings in Illinois, April 2019
NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-09-30. Each event’s entry at NCEI: 817150, 817151.