Public Information Statement
Issued by NWS Chicago, IL

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NOUS43 KLOT 102054
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ILZ003>006-008-010>014-019>023-032-033-039-INZ001-002-010-011-019-
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PUBLIC INFORMATION STATEMENT
NATIONAL WEATHER SERVICE CHICAGO,IL
354 PM CDT FRI APR 10 2015

...NWS DAMAGE SURVEY FOR 04/09/15 TORNADO EVENT...
...NORTH CENTRAL ILLINOIS TORNADO PRELIMINARY RATED AN EF-4...

NWS METEOROLOGISTS HAVE CONDUCTED A GROUND SURVEY COVERING THE MOST
HEAVILY DAMAGED LOCATIONS. BASED ON EARLY FINDINGS THE TORNADO THAT
TRACKED FROM NEAR ROCHELLE TO NEAR BELVIDERE...AND IMPACTED THE
COMMUNITY OF FAIRDALE...APPEARS TO HAVE BEEN A SINGLE LONG TRACK
TORNADO. PRELIMINARY ASSESSMENT OF SURVEY INDICATES THIS TORNADO
WAS AN EF-4. AN AERIAL SURVEY WILL BE CONDUCTED LATER TODAY OR
TOMORROW...WEATHER PERMITTING...TO CONFIRM A FINAL RATING.

AT LEAST ONE SATELLITE TORNADO ASSOCIATED WITH THIS LARGER TORNADO
WAS FOUND THUS FAR AND THERE MAY HAVE BEEN OTHERS.  AN AERIAL
SURVEY WILL HELP US ASCERTAIN WHETHER THERE WERE ANY ADDITIONAL
TORNADOES ON THIS DAY.

.TORNADO...

RATING:                 EF-4 (PRELIMINARY)

EF SCALE: THE ENHANCED FUJITA SCALE CLASSIFIES
TORNADOES INTO THE FOLLOWING CATEGORIES.

EF0...WEAK......65 TO 85 MPH
EF1...WEAK......86 TO 110 MPH
EF2...STRONG....111 TO 135 MPH
EF3...STRONG....136 TO 165 MPH
EF4...VIOLENT...166 TO 200 MPH
EF5...VIOLENT...>200 MPH

NOTE:
THE INFORMATION IN THIS STATEMENT IS PRELIMINARY AND SUBJECT TO
CHANGE PENDING FINAL REVIEW OF THE EVENT AND PUBLICATION IN
NWS STORM DATA.

$$

JEE/ED F



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