Severe Thunderstorm Watch, Flash Flood Watch; Storms Expected in Arlington Heights, Northwest Suburbs by 9:45 PM

20180927-832PM GOES EAST August 28, 2018 at 0832 PM

SEVERE THUNDERSTORM WATCH & FLASH FLOOD WATCH

GOES East weather satellite shows a big blow up of thunderstorms as they head toward northern Illinois from Iowa Tuesday night. Severe thunderstorms are expected to arrive in Arlington Heights and the northwest suburbs by 9:30 p.m. to 9:45 p.m. The storm has brought one tornado warning in Milledgeville, Illinois (southwest of Rockford) about 8:00 p.m.

Weather Radar (also nexrad.chgowx.com) shows a strong line of storms from about Milwaukee to Peoria area. A bowing radar echo, indicative of especially high winds, is appearing to bear down on the area from the McHenry-Kane border and Lake-Cook border on the north, to about I-80 on the south.







FLASH FLOOD WATCH IN EFFECT UNTIL 7 AM CDT WEDNESDAY…

The National Weather Service in Chicago has issued a

* Flash Flood Watch for portions of Illinois and northwest
Indiana, including the following areas, in Illinois, Boone,
Cook, DeKalb, DuPage, Grundy, Kane, Kendall, La Salle, Lake
IL, Lee, McHenry, Ogle, Will, and Winnebago. In northwest
Indiana, Lake IN.

* Until 7 AM CDT Wednesday

* Periods of heavy rain associated with strong thunderstorms are
expected overnight tonight. Given recent rainfall, anticipated
high rainfall rates and high soil moisture, the thunderstorms
may produce localized flash flooding.

* Rivers and streams in urbanized areas may see rapid rises as
the heavy rainfall quickly goes into runoff.

 O’HARE FORECAST … 

Tonight: Showers and thunderstorms before 3am, then showers and possibly a thunderstorm, mainly after 3am. Low around 70. South wind 10 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 80%. New rainfall amounts between three quarters and one inch possible.

Wednesday: Showers and thunderstorms likely, mainly before 10am. Cloudy, then gradually becoming mostly sunny, with a high near 75. Southwest wind around 10 mph becoming north northwest in the afternoon. Winds could gust as high as 20 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Wednesday Night: Partly cloudy, with a low around 59. North wind 5 to 10 mph.

Thursday: Mostly sunny, with a high near 73. East northeast wind 5 to 10 mph.

Thursday Night: Mostly clear, with a low around 60. East wind around 5 mph becoming south southeast after midnight.

Friday: A 20 percent chance of showers and thunderstorms before 1pm. Mostly sunny, with a high near 81.

Friday Night: A 40 percent chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 69.

Saturday: A chance of showers and thunderstorms. Mostly cloudy, with a high near 85.

Saturday Night: A chance of showers and thunderstorms before 1am. Mostly cloudy, with a low around 68.

Sunday: A chance of showers and thunderstorms, mainly after 1pm. Partly sunny, with a high near 83.

Sunday Night: A slight chance of showers and thunderstorms. Mostly cloudy, with a low around 68.

Labor Day: A chance of showers and thunderstorms. Mostly sunny, with a high near 85.

Monday Night: A slight chance of showers and thunderstorms. Partly cloudy, with a low around 68.

Tuesday: Mostly sunny, with a high near 86.

 LAKE TEMPS … 

SOUTHERN LAKE MICHIGAN WATER TEMPERATURES
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
911 AM CDT Tue Aug 28 2018

LAKE MICHIGAN WATER TEMPERATURES…

CHICAGO SHORE……….76.

CHICAGO CRIB……….71.

WILMETTE BUOY……….69.

WAUKEGAN BUOY……….55.

WINTHROP HARBOR BUOY……….51.

MICHIGAN CITY……….72.

MICHIGAN CITY BUOY……….74.

SOUTH MID LAKE BUOY……….73.

NORTH MID LAKE BUOY……….67.

&&

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.

august.chicagoweatherstation.com

Arlingtoncardinal.com/radar

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20180927-832PM GOES EAST August 28, 2018 at 0832 PM