Regional Weather Summary
Issued by NWS Chicago, IL

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AWUS83 KLOT 202315
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ILZ003>006-008-010>014-019>023-032-033-039-INZ001-002-010-011-019-
211115-

WEATHER SUMMARY FOR NORTHERN ILLINOIS AND NORTHWEST INDIANA
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
515 PM CST THU NOV 20 2014 /615 PM EST THU NOV 20 2014/

THURSDAY AFTERNOON WAS WINDY AND COLD WITH HIGHS ONLY RANGING FROM
THE MID 20S TO LOWER 30S. HIGH PRESSURE WILL MOVE OVERHEAD
THURSDAY NIGHT...RESULTING IN CLEAR SKIES AND LIGHT WINDS. THIS
WILL SET THE STAGE FOR VERY COLD TEMPERATURES BY EARLY FRIDAY
MORNING...IN THE MID SINGLE DIGITS TO AROUND 10 OUTSIDE OF
CHICAGO AND LOWER TO MID TEENS IN AND NEAR THE CITY. SOUTHERLY
WINDS WILL DEVELOP ON FRIDAY AS HIGH PRESSURE SLIDES EAST...BUT
TEMPERATURES WILL ONLY RECOVER TO THE UPPER 20S TO LOWER 30S AFTER
THE COLD START TO THE DAY.

CHANGES WILL THEN FINALLY BE IN STORE AS MILDER AIR AND MOISTURE
BEGIN TO ARRIVE FRIDAY EVENING AND NIGHT. SCATTERED LIGHT FREEZING
RAIN IS EXPECTED TO DEVELOP FRIDAY EVENING INTO THE OVERNIGHT AND
TRANSITION TO RAIN BY SATURDAY MORNING AS TEMPERATURES WARM ABOVE
FREEZING. A MUCH MILDER WEEKEND...WITH HIGHS IN THE MID TO UPPER
40S ON SATURDAY AND UPPER 40S TO LOWER 50S ON SUNDAY...WILL BE
ACCOMPANIED BY PERIODS OF RAIN AS A POWERFUL STORM SYSTEM TRACKS
ACROSS THE REGION. HEAVY RAIN IS POSSIBLE ON SUNDAY. COLDER AIR
WILL BE DRIVEN BACK IN BY STRONG WESTERLY WINDS LATE SUNDAY NIGHT
INTO MONDAY AS THE INTENSE LOW PRESSURE AREA MOVES SLOWLY AWAY
FROM THE NORTHERN GREAT LAKES. ANY LINGERING PRECIPITATION IS
EXPECTED TO MIX WITH AND CHANGE TO SNOW DURING THE DAY INTO MONDAY
EVENING. COLDER THAN AVERAGE CONDITIONS THEN LOOK TO REMAIN IN
PLACE THROUGH THANKSGIVING.

$$

RC

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