Public Information Statement
Issued by NWS Chicago, IL

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NOUS43 KLOT 111138
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ILZ003>006-008-010>014-019>023-032-033-039-INZ001-002-010-011-019-
112345-

PUBLIC INFORMATION STATEMENT
NATIONAL WEATHER SERVICE CHICAGO IL
638 AM CDT THU JUN 11 2015

...GIANT HAIL RECORDED IN MINOOKA ON JUNE 10TH...

SEVERAL SEVERE STORMS DEVELOPED ACROSS NORTHERN ILLINOIS ON
WEDNESDAY JUNE 10TH. ONE OF THESE PASSED OVER MINOOKA ILLINOIS IN
GRUNDY COUNTY BETWEEN 715 AND 725 PM AND PRODUCED ISOLATED GIANT
HAIL OF UP TO OVER FOUR INCHES IN DIAMETER. THERE WERE MULTIPLE
REPORTS OF HAIL TO 4.25 INCHES IN DIAMETER FROM THE PUBLIC. SOME
OF THIS HAIL CAUSED SEVERE DAMAGE TO VEHICLE WINDSHIELDS.

LOOKING AT LARGE HAIL DATA THROUGH THE STORM DATA EVENTS DATABASE
FROM THE NOAA NATIONAL CLIMATIC DATA CENTER /NCDC/...INFORMATION
WAS RETRIEVED THAT MAY HELP TO PUT HAIL THIS SIZE INTO
PERSPECTIVE. RECORDS ON HAIL DATA DATE BACK TO 1950 BUT BECAME
MORE DETAILED AND ROBUST BEGINNING IN THE MID TO LATE 1990S.
ACCORDING TO THE DATABASE:

- THIS WAS THE SECOND LARGEST HAIL IN NORTHEAST AND NORTH CENTRAL
ILLINOIS. THE ONLY INSTANCE OF OBSERVED LARGER HAIL WAS ON APRIL
23 1961...WHEN SIX INCH DIAMETER HAIL WAS REPORTED IN KANKAKEE
COUNTY.

- BESIDES THE 1961 INSTANCE NOTED ABOVE...THERE WAS ONE OTHER
OCCASION IN THE NWS CHICAGO COUNTY WARNING AREA WHERE HAIL OF THIS
LARGE IN DIAMETER WAS RECORDED...AND THAT WAS ON JUNE 14 2010 WHEN
4.25 INCH DIAMETER HAIL OCCURRED IN BOSWELL OF BENTON COUNTY
INDIANA.

- THIS WAS THE LARGEST HAIL IN THE STATE OF ILLINOIS SINCE APRIL
28 2012...WHEN 4.5 INCH DIAMETER HAIL WAS REPORTED IN OKAWVILLE
IN WASHINGTON COUNTY.

- SINCE 2005...HAIL OF THIS LARGE IN DIAMETER IS REPORTED ABOUT
35-40 TIMES A YEAR IN THE UNITED STATES. HOWEVER...ALMOST ALL OF
THESE REPORTS ARE FROM THE PLAINS STATES.

$$

MTF



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