Chicago Weather O'Hare Forecast Wednesday, April 8 2015 at 9:44:36 PM CT

NWS Forecast for: Amf Ohare IL
Issued by: National Weather Service Chicago, IL
Last Update: 9:16 pm CDT Apr 8, 2015


Dense Fog Advisory BELOW
Hazardous Weather Outlook BELOW

Tonight: Showers and thunderstorms likely, then showers and possibly a thunderstorm after 4am. Areas of fog after 1am. Temperature rising to around 48 by 5am. Northeast wind 5 to 10 mph becoming east southeast after midnight. Winds could gust as high as 15 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.

Thursday: Showers and possibly a thunderstorm before 7am, then showers and thunderstorms likely after 7am. Some of the storms could be severe. High near 73. South wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.

Thursday Night: Showers and thunderstorms likely, mainly before 11pm. Some of the storms could be severe. Mostly cloudy, with a low around 42. Breezy, with a south southwest wind 15 to 20 mph becoming west after midnight. Winds could gust as high as 30 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Friday: Mostly sunny, with a high near 57. Breezy, with a west wind 15 to 20 mph, with gusts as high as 30 mph.


Friday Night: Mostly clear, with a low around 35. West northwest wind 5 to 15 mph, with gusts as high as 20 mph.

Saturday: Sunny, with a high near 60.

Saturday Night: Mostly clear, with a low around 42.

Sunday: Partly sunny, with a high near 66.

Sunday Night: A chance of showers. Mostly cloudy, with a low around 53.

Monday: A chance of showers and thunderstorms. Partly sunny, with a high near 64.

Monday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 49.

Tuesday: A chance of showers and thunderstorms. Mostly cloudy, with a high near 65.

Tuesday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 53.

Wednesday: A chance of showers and thunderstorms. Partly sunny, with a high near 67.


Amf Ohare IL
41.98°N 87.9°W

Visit your local NWS office at: http://www.crh.noaa.gov/lot


Hazardous Weather Outlook
Issued by NWS Chicago, IL

000
FLUS43 KLOT 082128
HWOLOT

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
428 PM CDT WED APR 8 2015



ILZ003>006-008-010>014-019>023-032-033-039-INZ001-002-010-011-019-
092130-
WINNEBAGO-BOONE-MCHENRY-LAKE ILLINOIS-OGLE-LEE-DE KALB-KANE-
DUPAGE-COOK-LA SALLE-KENDALL-GRUNDY-WILL-KANKAKEE-LIVINGSTON-
IROQUOIS-FORD-LAKE INDIANA-PORTER-NEWTON-JASPER-BENTON-
428 PM CDT WED APR 8 2015

THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTH CENTRAL ILLINOIS...
NORTHEAST ILLINOIS AND NORTHWEST INDIANA.

.DAY ONE...TONIGHT.

WEATHER HAZARDS EXPECTED:

THUNDERSTORMS...SOME MAY PRODUCE:

LOCALLY HEAVY RAINFALL RESULTING IN LOCALIZED FLOODING.
HAIL TO TWO INCHES IN DIAMETER.
WIND GUSTS TO 50 MPH.
FREQUENT CLOUD TO GROUND LIGHTNING.

AREAS AFFECTED AND TIMING:

SCATTERED THUNDERSTORMS ARE POSSIBLE THIS EVENING...ESPECIALLY
SOUTH OF I-80...WITH GRADUALLY IMPROVING CHANCES FOR
THUNDERSTORMS LATE THIS EVENING AND OVERNIGHT.

DISCUSSION:

AS MOISTURE SLOWLY INCREASES ACROSS THE AREA
TONIGHT...SCATTERED STORMS ARE POSSIBLE THIS EVENING...WITH
GRADUALLY INCREASING SUPPORT FOR STORMS LATER THIS EVENING AND
OVERNIGHT. MODEST INSTABILITY ALOFT WILL SUPPORT LARGE HAIL IN
THE STRONGEST OF STORMS THAT DEVELOP...THOUGH THERE IS
UNCERTAINTY ON JUST HOW WIDESPREAD ANY STORMS WILL BE
OVERNIGHT. STORMS WITH ANY POTENTIAL FOR GUSTY WINDS SHOULD BE
CONFINED TO MAINLY SOUTH OF U.S. HIGHWAY 24.

IN ADDITION...DENSE FOG MAY OCCUR NEAR THE LAKE SHORE.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY.

SOME STORMS...POSSIBLY WIDESPREAD...ARE LIKELY THURSDAY MORNING
WITH LARGE HAIL BEING THE MAIN HAZARD WITH ANY SEVERE STORMS
DURING THAT TIME. THERE CONTINUES A THREAT FOR POSSIBLE
WIDESPREAD SEVERE THUNDERSTORMS...INCLUDING SOME
TORNADOES...FROM THE MIDDLE OF THURSDAY AFTERNOON INTO THURSDAY
EVENING. WHILE THE INGREDIENTS ARE THERE FOR SIGNIFICANT SEVERE
WEATHER...THEY WILL NEED TO COME TOGETHER JUST RIGHT...AND IF
EVEN JUST ONE INGREDIENT FAILS TO MATERIALIZE IN TIME THE THREAT
AND COVERAGE WILL DECREASE SUBSTANTIALLY.

THERE IS ANOTHER CHANCE OF THUNDERSTORMS SUNDAY NIGHT AND MONDAY.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION MAY BE NEEDED LATER TONIGHT AND THURSDAY
MORNING...THOUGH WOULD SEEM MOST BENEFICIAL DURING PART OF
THURSDAY AFTERNOON AND EARLY THURSDAY EVENING.




&&

$$

LMZ740>745-092130-
WINTHROP HARBOR TO WILMETTE HARBOR-
WILMETTE HARBOR TO NORTHERLY ISLAND-
NORTHERLY ISLAND TO CALUMET HARBOR-CALUMET HARBOR TO GARY-
GARY TO BURNS HARBOR-BURNS HARBOR TO MICHIGAN CITY-
428 PM CDT WED APR 8 2015

THIS HAZARDOUS WEATHER OUTLOOK IS FOR THE ILLINOIS NEARSHORE
WATERS OF LAKE MICHIGAN AND THE INDIANA NEARSHORE WATERS OF LAKE
MICHIGAN.

.DAY ONE...TONIGHT.

STRONG WINDS WILL LEAD TO HAZARDOUS CONDITIONS FOR SMALL CRAFT
EARLY THIS EVENING.

AREAS OF DENSE FOG ARE LIKELY...ESPECIALLY THIS EVENING.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY.

STRONG WINDS AND HIGH WAVES WILL LIKELY PRODUCE HAZARDOUS
CONDITIONS FOR SMALL CRAFT THURSDAY AFTERNOON THROUGH FRIDAY.

THUNDERSTORMS ARE LIKELY THURSDAY AND EARLY THURSDAY EVENING. SOME
OF THESE STORMS MAY BE SEVERE.

THERE IS ANOTHER CHANCE OF THUNDERSTORMS SUNDAY NIGHT AND MONDAY.

&&

$$

LMZ080-261-362-364-366-563-565-567-669-671-673-675-777-779-868-
870-872-874-876-878-092130-
LAKE MICHIGAN FROM MICHIGAN CITY IN TO ST. JOSEPH MI 5 NM
OFFSHORE TO MID LAKE-
LAKE MICHIGAN FROM SEUL CHOIX POINT TO ROCK ISLAND PASSAGE 5 NM
OFFSHORE TO MID LAKE-
LAKE MICHIGAN SOUTH OF A LINE FROM SEUL CHOIX POINT TO THE
MACKINAC BRIDGE AND NORTH OF A LINE FROM CHARLEVOIX MI TO SOUTH
FOX ISLAND 5 NM OFFSHORE-
LAKE MICHIGAN FROM CHARLEVOIX TO POINT BETSIE MI 5 NM OFFSHORE TO
MID LAKE-
LAKE MICHIGAN FROM POINT BETSIE TO MANISTEE MI 5 NM OFFSHORE TO
MID LAKE-
LAKE MICHIGAN FROM ROCK ISLAND PASSAGE TO STURGEON BAY WI-
LAKE MICHIGAN FROM STURGEON BAY TO TWO RIVERS WI 5 NM OFFSHORE TO
MID LAKE-
LAKE MICHIGAN FROM TWO RIVERS TO SHEBOYGAN WI 5 NM OFFSHORE TO
MID LAKE-
LAKE MICHIGAN FROM SHEBOYGAN TO PORT WASHINGTON WI 5 NM OFFSHORE
TO MID LAKE-
LAKE MICHIGAN FROM PORT WASHINGTON TO NORTH POINT LIGHT WI 5 NM
OFFSHORE TO MID LAKE-
LAKE MICHIGAN FROM NORTH POINT LIGHT TO WIND POINT WI 5 NM
OFFSHORE TO MID LAKE-
LAKE MICHIGAN FROM WIND POINT WI TO WINTHROP HARBOR IL 5 NM
OFFSHORE TO MID LAKE-
LAKE MICHIGAN FROM WINTHROP HARBOR TO WILMETTE HARBOR IL 5 NM
OFFSHORE TO MID LAKE-
LAKE MICHIGAN FROM WILMETTE HARBOR IL TO MICHIGAN CITY IN 5 NM
OFFSHORE TO MID LAKE-
LAKE MICHIGAN FROM PENTWATER TO MANISTEE MI 5 NM OFFSHORE TO MID
LAKE-
LAKE MICHIGAN FROM WHITEHALL TO PENTWATER MI 5 NM OFFSHORE TO MID
LAKE-
LAKE MICHIGAN FROM GRAND HAVEN TO WHITEHALL MI 5 NM OFFSHORE TO
MID LAKE-
LAKE MICHIGAN FROM HOLLAND TO GRAND HAVEN MI 5 NM OFFSHORE TO MID
LAKE-
LAKE MICHIGAN FROM SOUTH HAVEN TO HOLLAND MI 5 NM OFFSHORE TO MID
LAKE-
LAKE MICHIGAN FROM ST. JOSEPH TO SOUTH HAVEN MI 5 NM OFFSHORE TO
MID LAKE-
428 PM CDT WED APR 8 2015

THIS HAZARDOUS WEATHER OUTLOOK IS FOR THE OPEN WATERS OF LAKE
MICHIGAN.

.DAY ONE...TONIGHT.

AREAS OF DENSE FOG ARE POSSIBLE ON SOUTHERN LAKE MICHIGAN.

THUNDERSTORMS ARE LIKELY ACROSS THE SOUTH HALF OF THE LAKE.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY.

THUNDERSTORMS ARE LIKELY OVER MAINLY THE SOUTH HALF OF THE LAKE
THURSDAY AND THURSDAY EVENING. SOME STORMS COULD BE SEVERE.

THERE IS ANOTHER CHANCE OF THUNDERSTORMS OVER THE SOUTHERN PART
OF THE LAKE SUNDAY NIGHT AND MONDAY.

&&

$$

MTF



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