Waarschuwingen, Marston School (historical)

Tornado Watch issued May 21 at 5:56PM CDT until May 21 at 9:00PM CDT by NWS Quad Cities IA IL TORNADO WATCH 277 REMAINS VALID UNTIL 9 PM CDT THIS EVENING FOR THE FOLLOWING AREAS IN ILLINOIS THIS WATCH INCLUDES 8 COUNTIES IN NORTHWEST ILLINOIS CARROLL HENRY IL JO DAVIESS MERCER ROCK ISLAND WHITESIDE IN WEST CENTRAL ILLINOIS HENDERSON WARREN IN IOWA THIS WATCH INCLUDES 21 COUNTIES IN EAST CENTRAL IOWA BENTON CEDAR CLINTON IOWA JACKSON JOHNSON JONES LINN MUSCATINE SCOTT IN NORTHEAST IOWA BUCHANAN DELAWARE DUBUQUE IN SOUTHEAST IOWA DES MOINES HENRY IA JEFFERSON KEOKUK LEE LOUISA VAN BUREN WASHINGTON THIS INCLUDES THE CITIES OF ALEDO, ANAMOSA, BETTENDORF, BURLINGTON, CEDAR RAPIDS, CLINTON, CREDIT ISLAND, DAVENPORT, DUBUQUE, FAIRFIELD, GALENA, GENESEO, INDEPENDENCE, IOWA CITY, KEOKUK, KEOSAUQUA, MANCHESTER, MAQUOKETA, MARENGO, MOLINE, MONMOUTH, MOUNT CARROLL, MOUNT PLEASANT, MUSCATINE, OQUAWKA, ROCK ISLAND, SIGOURNEY, STERLING, TIPTON, VINTON, WAPELLO, AND WASHINGTON.