Severe Thunderstorms Possible 6-9P Near Arlington Heights, Northwest Suburbs

Severe thunderstorms may arrive near Rockford by 3-6pm, the northwest suburbs by 6-9pm, and northwest Indiana by 6-10pm. Improved timing forecast will be developed once thunderstorms develop in Iowa.

Damaging wind gusts to 60 MPH are the primary threat, but large hail and even a tornado is possible. Northwest Cook County, southern Lake County and southern McHenry County are in the highest risk area for this afternoon and evening, according to a NWS Office Chicago tweet at 6:07 a.m. The NWS declares medium confidence that some areas in Chicagoland will get severe weather. Yesterday, the NWS Chicago forecast placed the highest risk area south of I-88; and today the NWS Storm Prediction Center Day 1 Convective Outlook places the highest risk areas in central and southern Illinois.

CARDINAL NEWS expects the most severe risk will be around I-80 and further south into central and especially southern Illinois.

SPC Convective Outlook Day 1 Monday, May 3, 2021
SPC Convective Outlook Day 1 Monday, May 3, 2021.

The high temperature of 74°F will peak at about 4:00 p.m. to 5:00 p.m. Winds from the southwest will start pickup with gusts of 15 to 21 MPH and higher gusts in thunderstorms.

Weather Radar) is clear at 8:55 a.m. and showed very light precipitation moving off to the east over Lake Michigan at 7:35 a.m.

 O’HARE FORECAST … 

Today: A slight chance of showers before noon, then a slight chance of showers and thunderstorms after 4pm. Cloudy, with a high near 74. South southwest wind 5 to 10 mph, with gusts as high as 15 mph. Chance of precipitation is 20%.

Tonight: Showers and thunderstorms before 1am, then a slight chance of showers between 1am and 4am. Low around 52. Southwest wind 10 to 15 mph becoming north northwest after midnight. Winds could gust as high as 20 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.

Tuesday: A 40 percent chance of showers after 7am. Mostly cloudy, with a high near 58. North northwest wind around 10 mph, with gusts as high as 20 mph.

Tuesday Night: A 20 percent chance of showers before 1am. Mostly cloudy, with a low around 43. North wind 10 to 15 mph, with gusts as high as 25 mph.

Wednesday: Sunny, with a high near 59. North wind 10 to 15 mph, with gusts as high as 20 mph.

Wednesday Night: Mostly cloudy, with a low around 44.

Thursday: A 40 percent chance of showers. Mostly cloudy, with a high near 58.

Thursday Night: Partly cloudy, with a low around 42.

Friday: Mostly sunny, with a high near 60.

Friday Night: A slight chance of showers after 1am. Partly cloudy, with a low around 44.

Saturday: A chance of showers. Partly sunny, with a high near 62.

Saturday Night: A chance of showers. Mostly cloudy, with a low around 49.

Sunday: A chance of showers. Mostly cloudy, with a high near 63.

 LAKE TEMPS … 

SOUTHERN LAKE MICHIGAN WATER TEMPERATURES
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
908 AM CDT Sun May 2 2021

LAKE MICHIGAN WATER TEMPERATURES…

CHICAGO SHORE……….55.

CHICAGO CRIB……….52.

MICHIGAN CITY……….49.

&&

M IS FOR MISSING DATA THAT IS NORMALLY AVAILABLE.

THE MICHIGAN CITY WATER TEMPERATURE SENSOR IS LOCATED AT A WATER
INTAKE ONE MILE OFFSHORE AND 60 FEET BELOW WATER SURFACE. IT IS READ
EVERY DAY OF THE YEAR.

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