One product issued by NWS for: Roscoe IL
Hazardous Weather Outlook
Hazardous Weather Outlook
National Weather Service Chicago/Romeoville IL
418 AM CDT Tue May 21 2024
ILZ003>006-008-010>013-019>021-023-032-033-039-103>108-INZ001-002-
010-011-019-220930-
Winnebago-Boone-McHenry-Lake IL-Ogle-Lee-De Kalb-Kane-DuPage-
La Salle-Kendall-Grundy-Kankakee-Livingston-Iroquois-Ford-
Northern Cook-Central Cook-Southern Cook-Northern Will-
Southern Will-Eastern Will-Lake IN-Porter-Newton-Jasper-Benton-
418 AM CDT Tue May 21 2024 /518 AM EDT Tue May 21 2024/
This Hazardous Weather Outlook is for portions of north central
Illinois...northeast Illinois and northwest Indiana.
.DAY ONE...Today and Tonight.
Weather hazards expected...
Significant Thunderstorm Risk...with an associated:
Elevated Tornado Risk.
Significant Damaging Wind Risk...locally over 75 mph.
Limited Hail Risk...up to 1 inch in diameter.
Elevated Non Thunderstorm Wind Risk.
DISCUSSION...
There is a chance of a thunderstorm this morning, mainly
northwest of a Peru to Waukegan line. Severe weather is not
expected this morning.
A potentially dangerous line of severe thunderstorms is expected
to move across the region between about 7 PM and 1 AM. Widespread
damaging winds, potentially in excess of 75 mph in a few areas,
should be expected with this line of storms. In addition, this
line will be capable of numerous producing tornadoes, one or two
of which could be strong. The greatest risk for a strong tornado
appears to be near and west of the Interstate 39 corridor.
Outside of any thunderstorms, winds could gust over 40 mph this
evening into the early portions of the overnight hours.
.DAYS TWO THROUGH SEVEN...Wednesday through Monday.
Friday through Monday...
Limited Thunderstorm Risk at times.
.SPOTTER INFORMATION STATEMENT...
Spotters will likely be needed between 7 PM and 1 AM tonight.
GENERAL STORM MOTION OF THE DAY:
Moving toward the northeast at 45 to 55 mph.
$$