Regional Weather Summary
Issued by NWS Chicago, IL

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AWUS83 KLOT 201303
RWSLOT
ILZ003>006-008-010>014-019>023-032-033-039-INZ001-002-010-011-019-
210115-

WEATHER SUMMARY FOR NORTHERN ILLINOIS AND NORTHWEST INDIANA
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
803 AM CDT SAT SEP 20 2014 /903 AM EDT SAT SEP 20 2014/

ON SUNDAY MORNING...A COLD FRONT TRAILED SOUTHWEST OF A LOW
PRESSURE AREA CENTERED NEAR LAKE SUPERIOR. ISOLATED TO SCATTERED
SHOWERS AND STORMS WILL BE POSSIBLE THROUGH MID DAY ACROSS
PORTIONS OF NORTHERN ILLINOIS. THE HIGHER COVERAGE OF STORMS
FORMING AHEAD OF THE COLD FRONT AS AN UPPER DISTURBANCE MOVES
OVERHEAD IS EXPECTED TO BE ALONG AND SOUTH OF A WAUKEGAN TO
MENDOTA LINE AROUND MID DAY AND THEN SHIFTING SOUTHEAST INTO THE
EARLY EVENING. STRONG TO SEVERE STORMS CAPABLE OF PRODUCING
DAMAGING WINDS AND LARGE HAIL ARE POSSIBLE. GUSTY SOUTHWEST WINDS
TODAY WILL USHER IN WARMER AND MORE HUMID AIR...WITH HIGHS IN THE
UPPER 70S TO LOWER 80S. ISOLATED SHOWERS AND POSSIBLY A FEW
THUNDERSTORMS IN ASSOCIATION WITH A SECONDARY COLD FRONT COULD
MAKE IT INTO FAR NORTHERN ILLINOIS THIS EVENING. LOW TEMPERATURES
BY EARLY SUNDAY WILL RANGE FROM THE UPPER 50S TO LOWER 60S.

AN UPPER DISTURBANCE WILL MOVE OVER THE REGION ON SUNDAY...WHICH
COULD RESULT IN ISOLATED TO SCATTERED SHOWERS FOR PARTS OF THE
AREA...MAINLY NORTHEAST ILLINOIS AND EXTREME NORTHWEST INDIANA. IT
WILL BE MUCH COOLER...WITH HIGHS RANGING FROM THE MID 60S TO LOWER
70S...COOLEST NEAR THE LAKE DUE TO GUSTY NORTHERLY WINDS.
EXPANSIVE HIGH PRESSURE WILL THEN BE IN CONTROL OF THE WEATHER
THROUGH AT LEAST MID WEEK. HIGHS ON MONDAY WILL RANGE FROM THE MID
60S TO AROUND 70...WARMING TO THE LOWER TO MID 70S ON WEDNESDAY
AND MID TO UPPER 70S ON THURSDAY.

$$

RC

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