Public Information Statement
Issued by NWS Chicago, IL

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NOUS43 KLOT 150547 AAA
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ILZ003>006-008-010>014-019>023-032-033-039-INZ001-002-010-011-019-
151800-

PUBLIC INFORMATION STATEMENT...UPDATED
NATIONAL WEATHER SERVICE CHICAGO IL
1247 AM CDT WED APR 15 2015

...NWS DAMAGE SURVEY RESULTS FOR 04/09/15 TORNADO EVENT...

NWS METEOROLOGISTS HAVE NOW CONFIRMED SEVEN TORNADOES ACROSS
NORTH CENTRAL ILLINOIS FROM THE EVENING OF APRIL 9. NWS CHICAGO
WOULD LIKE TO EXPRESS APPRECIATION TO NASA SPORT FOR THE SATELLITE
IMAGERY...NOAA REMOTE SENSING DIVISION FOR THE HIGH RESOLUTION
AREAL PHOTOGRAPHY...THE CIVIL AIR PATROL FOR AREAL
PHOTOGRAPHY...AS WELL AS THE ILLINOIS STATE POLICE AND THE MCHENRY
COUNTY EMERGENCY MANAGEMENT AGENCY FOR THEIR AREAL DAMAGE PHOTOS
AS WELL. ALL OF THIS REMOTE SENSING DATA ALONG WITH THE GROUND
SURVEYS WERE INSTRUMENTAL IN IDENTIFYING THE TORNADO PATHS LISTED
BELOW AS WELL AS THE DAMAGE INTENSITY.

THE FIRST TORNADO WAS SPAWNED OVER FAR SOUTHEAST WINNEBAGO COUNTY
INTO BOONE COUNTY BY THE FIRST SUPERCELL THUNDERSTORM...WHILE THE
NEXT SIX TORNADOES FORMED FROM ONE POWERFUL AND LONG DURATION
SUPERCELL STORM...INCLUDING THE VIOLENT LONG TRACK EF-4 FROM
NORTHERN LEE COUNTY...THROUGH OGLE AND DEKALB COUNTIES...AND
ENDING IN FAR SOUTHERN BOONE COUNTY.

THE TORNADO COUNT FROM THE APRIL 9TH EVENT FOR THE NWS CHICAGO
COUNTY WARNING AREA STANDS AS FOLLOWS...

EF-4: 1
EF-1: 3
EF-0: 3

TORNADOES WERE ON THE GROUND FOR A TOTAL OF 43.5 MILES ACROSS
NORTH CENTRAL ILLINOIS.

HERE IS A LISTING OF THE CONFIRMED TORNADOES...

.TORNADO 1...

RATING:                 EF-0
ESTIMATED PEAK WIND:    65 MPH
PATH LENGTH /STATUTE/:  2.8 MILES
PATH WIDTH /MAXIMUM/:   25 YARDS
FATALITIES:             0
INJURIES:               0

START DATE:             APRIL 09 2015
START TIME:6:37 PM CDT
START LOCATION:         2.9 MILES S CHERRY VALLEY
START LAT/LON:          42.1926/-88.9548

END DATE:               APRIL 09 2015
END TIME:6:40 PM CDT
END LOCATION:           2.5 MILES SE CHERRY VALLEY
END_LAT/LON:            42.2174/-88.9106

AN EMERGENCY MANAGER AND TRAINED SPOTTERS PHOTOGRAPHED A
TORNADO THAT TOUCHED DOWN SOUTH OF CHERRY VALLEY. THE
TORNADO DID NOT PRODUCE ANY DAMAGE.


.TORNADO 2...

RATING:                 EF-4
ESTIMATED PEAK WIND:    200 MPH
PATH LENGTH /STATUTE/:  30.2 MILES
PATH WIDTH /MAXIMUM/:   700 YARDS
FATALITIES:             2
INJURIES:               22

START DATE:APRIL 09 2015
START TIME:6:39 PM CDT
START LOCATION:0.9 MILES NE FRANKLIN GROVE
START LAT/LON:          41.8530/-89.2896

END DATE:APRIL 09 2015
END TIME:7:20 PM CDT
END LOCATION:5 NNW KIRKLAND
END LAT/LON:            42.1623/-88.8792

THIS LONG TRACKED VIOLENT TORNADO DESTROYED NUMEROUS HOMES AND
FARMSTEADS...AS WELL AS TOSSED VEHICLES...ALONG ITS PATH FROM
NORTH CENTRAL LEE COUNTY ACROSS EASTERN OGLE...NORTHWEST
DEKALB...INTO EXTREME SOUTHERN BOONE COUNTY. THIS INCLUDED ACROSS
THE FAR NORTHWEST SIDE OF ROCHELLE...ACROSS INTERSTATE 39...AND
DIRECTLY THROUGH FAIRDALE.


.TORNADO 3...

RATING:                 EF-0
ESTIMATED PEAK WIND:    65 MPH
PATH LENGTH /STATUTE/:  1.9 MILES
PATH WIDTH /MAXIMUM/:   100 YARDS
FATALITIES:             0
INJURIES:               0

START DATE:APRIL 09 2015
START TIME:7:05 PM CDT
START LOCATION:2.9 MILES E LINDENWOOD
START LAT/LON:          42.0583/-88.9752

END DATE:APRIL 09 2015
END TIME:7:08 PM CDT
END LOCATION:4.6 ENE LINDENWOOD
END LAT/LON:            42.0739/-88.9457

THIS BRIEF SATELLITE TORNADO OVER FAR EASTERN OGLE COUNTY WAS
CONFIRMED USING AERIAL SURVEY INFORMATION AND RADAR DATA.


.TORNADO 4...

RATING:                 EF-1
ESTIMATED PEAK WIND:    110 MPH
PATH LENGTH /STATUTE/:  4.0 MILES
PATH WIDTH /MAXIMUM/:   100 YARDS
FATALITIES:             0
INJURIES:               0

START DATE:             APRIL 09 2015
START TIME:             7:15 PM CDT
START LOCATION:         3.1 MILES NW KIRKLAND
START LAT/LON:          42.1334/-88.8776

END DATE:               APRIL 09 2015
END TIME:               7:21 PM CDT
END LOCATION:           6 MILES S BELVIDERE
END_LAT/LON:            42.1786/-88.8287

THIS TORNADO PATH WAS IDENTIFIED USING STORM CHASER VIDEO...GROUND
SURVEY AND AERIAL SURVEY INFORMATION. THE TORNADO FORMED IN FAR
NORTHWEST DEKALB COUNTY AND LIFTED IN FAR SOUTHERN BOONE COUNTY.


.TORNADO 5...

RATING:                 EF-0
ESTIMATED PEAK WIND:    85 MPH
PATH LENGTH /STATUTE/:  0.4 MILES
PATH WIDTH /MAXIMUM/:   30 YARDS
FATALITIES:             0
INJURIES:               0

START DATE:             APRIL 09 2015
START TIME:7:24 PM CDT
START LOCATION:         3.8 MILES S BELVIDERE
START LAT/LON:          42.2073/-88.8425

END DATE:               APRIL 09 2015
END TIME:               7:25 PM CDT
END LOCATION:           3.9 MILES S BELVIDERE
END_LAT/LON:            42.2020/-88.8465

THIS TORNADO WAS SPAWNED BY THE SAME STORM THAT PRODUCED THE LONG
TRACK EF-4 SHORTLY AFTER THAT TORNADO LIFTED.


.TORNADO 6...

RATING:                 EF-1
ESTIMATED PEAK WIND:    110 MPH
PATH LENGTH /STATUTE/:  3.9 MILES
PATH WIDTH /MAXIMUM/:   50 YARDS
FATALITIES:             0
INJURIES:               0

START DATE:             APRIL 09 2015
START TIME:7:25 PM CDT
START LOCATION:         6 MILES SE BELVIDERE
START LAT/LON:          42.2442/-88.7386

END DATE:               APRIL 09 2015
END TIME:7:31 PM CDT
END LOCATION:           5.6 MILES ESE BELVIDERE
END_LAT/LON:            42.1942/-88.7748

THIS TORNADO WAS SPAWNED BY THE SAME STORM THAT PRODUCED THE LONG
TRACK EF-4 SHORTLY AFTER THAT TORNADO LIFTED.


.TORNADO 7...

RATING:                 EF-1
ESTIMATED PEAK WIND:    90 MPH
PATH LENGTH /STATUTE/:  0.3 MILES
PATH WIDTH /MAXIMUM/:   30 YARDS
FATALITIES:             0
INJURIES:               0

START DATE:             APRIL 09 2015
START TIME:             7:50 PM CDT
START LOCATION:         4.4 MILES EAST SOUTHEAST OF HARVARD
START LAT/LON:          42.3982/-88.5309

END DATE:               APRIL 09 2015
END TIME:7:51 PM CDT
END LOCATION:           4.6 MILES EAST SOUTHEAST OF HARVARD
END_LAT/LON:            42.4019/-88.5272

THIS BRIEF TORNADO SNAPPED AND UPROOTED 6 TO 7 TREES AT A
PROPERTY ON MCGUIRE ROAD SOUTHEAST OF HARVARD THEN CAUSED MINOR
TREE DAMAGE ON THE NORTH SIDE OF THE ROAD BEFORE ENDING.


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.

$$

NWS CHICAGO



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