Alert archive / Illinois / Small Craft Advisories in 2012

Small Craft Advisory 56, NWS Chicago, IL

May 15, 2012

NWS Chicago, IL issued this small craft advisory at May 15, 2012, 11:49 PM CDT. It took effect at May 16, 2012, 12:00 AM CDT. It was in force for 16 hr.

The area

The counties it named.

The facts

Issued
May 15, 2012, 11:49 PM CDT (04:49 UTC)
In effect from
May 16, 2012, 12:00 AM CDT
Expired
May 16, 2012, 4:22 PM CDT
In force
16 hr
Issued by
NWS Chicago, IL

What forecasters said that day

The local office's own words before this small craft advisory went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Chicago, IL wrote its last area forecast discussion before this small craft advisory went out at May 15, 4:02 PM CDT, 7 hours 47 minutes earlier.

Area forecast discussion, May 15, 4:02 PM CDT, 7 hours 47 minutes before
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Hazardous weather outlook, May 15, 3:41 PM CDT, 8 hours 8 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
341 PM CDT TUE MAY 15 2012

ILZ003>006-008-010>014-019>023-032-033-039-INZ001-002-010-011-019-
162045-
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-
341 PM CDT TUE MAY 15 2012 /441 PM EDT TUE MAY 15 2012/

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

.DAY ONE...TONIGHT.

  WEATHER HAZARDS EXPECTED:

  ISOLATED THUNDERSTORMS...SOME OF WHICH MAY PRODUCE:
   DAMAGING WIND GUSTS IN EXCESS OF 60 MPH.
   HAIL TO ONE INCH.

  AREAS AFFECTED AND TIMING:

   ISOLATED THUNDERSTORMS WERE DEVELOPING ALONG AN ADVANCING COLD
   FRONT AT MID AFTERNOON ACROSS FAR SOUTHWEST WISCONSIN. THIS FRONT
   WILL PUSH SOUTHEAST INTO NORTHERN FAR NORTHERN ILLINOIS NORTH OF
   INTERSTATE 88 THROUGH ABOUT 7 PM...AND ACROSS THE REMAINDER OF
   NORTHERN ILLINOIS AND NORTHWEST INDIANA THROUGH THE EVENING HOURS.
   ANY STORMS SHOULD RAPIDLY DECREASE IN COVERAGE AND INTENSITY BY
   LATE EVENING.

  DISCUSSION:

 A COLD FRONT WILL MOVE SOUTHEAST ACROSS THE AREA THIS EVENING. DESPITE
 THE PRESENCE OF RELATIVELY DRY LOW LEVEL AIR...A NARROW AXIS OF
 INSTABILITY IMMEDIATELY AHEAD OF THE FRONT WILL LIKELY TO CONTINUE
 TO SUPPORT ISOLATED THUNDERSTORM DEVELOPING DUE TO LIFT ALONG THE
 FRONT AS IT MOVES ACROSS THE REGION THIS EVENING. WHILE THUNDERSTORM
 COVERAGE IS ANTICIPATED TO BE RATHER LOW...ISOLATED STORMS THAT
 DO FORM COULD REACH SEVERE LIMITS AND PRODUCE GUSTY WINDS...AND
 POSSIBLY LARGE HAIL.

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY.

THERE IS A CHANCE OF THUNDERSTORMS AGAIN SUNDAY INTO MONDAY. AT
THIS TIME THE POTENTIAL FOR WIDESPREAD HAZARDOUS WEATHER DURING
THIS PERIOD APPEARS LOW.

.SPOTTER INFORMATION STATEMENT...

SPOTTERS WILL LIKELY NOT BE NEEDED TONIGHT...THOUGH ANY REPORTS OF
THUNDERSTORM PRODUCED WIND OR HAIL WOULD BE WELCOME.

&&

COMPLETE FORECAST INFORMATION IS AVAILABLE ON THE NWS CHICAGO
WEBPAGE: WEATHER.GOV/CHICAGO

LMZ740>745-162045-
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-
341 PM CDT TUE MAY 15 2012

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

.DAY ONE...TONIGHT.

THERE IS A CHANCE OF ISOLATED THUNDERSTORMS THIS EVENING. SOME OF
THE STORMS COULD APPROACH SEVERE LIMITS...WITH THE POTENTIAL TO
PRODUCE WIND GUSTS OF 50 KNOTS AND HAIL TO ONE INCH.

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY.

THERE IS A CHANCE OF THUNDERSTORMS AGAIN SUNDAY INTO MONDAY.

&&

COMPLETE FORECAST INFORMATION IS AVAILABLE ON THE NWS CHICAGO
WEBPAGE: WEATHER.GOV/CHICAGO

LMZ080-261-362-364-366-563-565-567-669-671-673-675-777-779-868-
870-872-874-876-878-162045-
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-
341 PM CDT TUE MAY 15 2012

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

.DAY ONE...TONIGHT.

THERE IS A CHANCE OF THUNDERSTORMS ACROSS CENTRAL AND SOUTHERN
LAKE MICHIGAN THROUGH THIS EVENING.

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY.

THERE IS A CHANCE OF PERIODIC THUNDERSTORMS ACROSS CENTRAL AND
NORTHERN LAKE MICHIGAN LATE THURSDAY THROUGH FRIDAY...AND AGAIN
SUNDAY THROUGH MONDAY.

&&

COMPLETE FORECAST INFORMATION IS AVAILABLE ON THE NWS CHICAGO
WEBPAGE: WEATHER.GOV/CHICAGO

RATZER

In the hours before

Special weather statement, May 15, 5:55 PM CDT, 5 hours 54 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
555 PM CDT TUE MAY 15 2012

ILZ003>005-160000-
BOONE IL-MCHENRY IL-WINNEBAGO IL-
555 PM CDT TUE MAY 15 2012

...SPECIAL WEATHER STATEMENT...

AT 551 PM...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A STRONG
THUNDERSTORM NEAR ROSCOE...MOVING EAST AT 35 MPH.

WINDS UP TO 50 MPH...OCCASIONAL CLOUD TO GROUND LIGHTNING...BRIEF
MODERATE DOWNPOURS...ARE POSSIBLE WITH THIS STORM.

LOCATIONS IMPACTED INCLUDE...
  ROSCOE...             SOUTH BELOIT...       MACHESNEY PARK...
  LOVES PARK...         POPLAR GROVE...       CAPRON...
  HARVARD...            MARENGO...            HEBRON...

THE FOLLOWING LOCATIONS MAY ALSO BE IMPACTED...
BOONE COUNTY FAIRGROUNDS...ROCK CUT STATE PARK...ROCK VALLEY
COLLEGE...ROCKFORD RIVERHAWKS BASEBALL AND ROCKFORD SPEEDWAY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

GUSTY WINDS MAY CAUSE SMALL BRANCHES TO BE BLOWN DOWN...AND LOOSE
OBJECTS TO BLOW AROUND. STAY AWAY FROM HIGH OBJECTS OUTDOORS SUCH AS
TREES. HEAVY RAINFALL COULD LEAD TO STANDING WATER ON ROADWAYS AND
POOR VISIBILITY. SEEK SHELTER IN A STURDY STRUCTURE UNTIL THIS STORM
HAS PASSED.

LAT...LON 4249 8836 4216 8855 4234 8912 4250 8904
TIME...MOT...LOC 2255Z 291DEG 32KT 4243 8894

BEACHLER
Special weather statement, May 15, 6:20 PM CDT, 5 hours 29 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
620 PM CDT TUE MAY 15 2012

ILZ005-006-011-012-014-160000-
COOK IL-DE KALB IL-KANE IL-LAKE IL-MCHENRY IL-
620 PM CDT TUE MAY 15 2012

...SPECIAL WEATHER STATEMENT...

AT 614 PM...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
THUNDERSTORMS ALONG A LINE EXTENDING FROM 10 MILES NORTH OF LAKE
CATHERINE TO MARENGO...MOVING EAST AT 40 MPH.

WINDS UP TO 50 MPH...OCCASIONAL CLOUD TO GROUND LIGHTNING...BRIEF
MODERATE DOWNPOURS...ARE POSSIBLE WITH THESE STORMS.

LOCATIONS IMPACTED INCLUDE...
  SUNNYSIDE...          MCHENRY...            LAKE CATHERINE...
  CHANNEL LAKE...       PISTAKEE HIGHLANDS... BULL VALLEY...
  MCCULLOM LAKE...      SPRING GROVE...       HUNTLEY...

THE FOLLOWING LOCATIONS MAY ALSO BE IMPACTED...
CHAIN O LAKES STATE PARK...COLLEGE OF LAKE COUNTY...GREAT LAKES NAVAL
TRAINING CENTER...HARPER COLLEGE...ILLINOIS BEACH STATE PARK...LAKE
COUNTY IL FAIRGROUNDS AND MCHENRY COUNTY COLLEGE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

GUSTY WINDS MAY CAUSE SMALL BRANCHES TO BE BLOWN DOWN...AND LOOSE
OBJECTS TO BLOW AROUND. STAY AWAY FROM HIGH OBJECTS OUTDOORS SUCH AS
TREES. HEAVY RAINFALL COULD LEAD TO STANDING WATER ON ROADWAYS AND
POOR VISIBILITY. SEEK SHELTER IN A STURDY STRUCTURE UNTIL THESE
STORMS HAVE PASSED.

LAT...LON 4250 8780 4245 8779 4227 8782 4200 8765
      4212 8871 4250 8841
TIME...MOT...LOC 2319Z 285DEG 38KT 4262 8799 4221 8843

BEACHLER

The office that day

Everything else NWS Chicago, IL issued on the same UTC day.

IssuedProductOfficeCountiesLasted
May 15, 7:01 PM CDTSpecial Weather StatementLOTLake44 min
May 15, 7:07 PM CDTSpecial Weather StatementLOTKane23 min
May 15, 7:21 PM CDTSevere Thunderstorm WarningLOTCook, DuPage, Kane, McHenry39 min
May 15, 8:04 PM CDTSpecial Weather StatementLOTDuPage41 min
May 15, 8:37 PM CDTSpecial Weather StatementLOTKendall23 min

Nearby

Small Craft Advisories in Illinois, 2012Every small craft advisory in 2012

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text.