Three tornadoes confirmed in Northern Illinois yesterday

All but one county (Stephenson) in our viewing area was under some sort of weather warning on Wednesday. Today, survey teams from the National Weather Service surveyed damage in Jo Daviess, Carroll, and DeKalb Counties. Here are their findings:

1Jo Daviess Co.
* LOCATION…3 SOUTH OF HANOVER ILLINOIS IN THE WOODS
* TIMING…AROUND 6:50 PM.
* INJURIES/FATALITIES…NONE.
* EF-SCALE RATING…EF0.
* ESTIMATED MAX WIND SPEED…65 MPH.
* MAX WIDTH…20 YARDS.
* PATH LENGTH…APPROXIMATELY 1/2 MILE.
* DAMAGE INFORMATION…BRIEF TOUCHDOWN WITH NO SIGNIFICANT DAMAGE.

2Carroll Co.
* LOCATION…THE TRACK BEGAN 6 MILES NORTH OF SAVANNA AND ENDED 4
MILES WEST OF MOUNT CARROLL
* TIMING…FROM 6:53 TO 7:03 PM.
* INJURIES/FATALITIES…1 INJURY.
* EF-SCALE RATING…EF2.
* ESTIMATED MAX WIND SPEED…135 MPH.
* MAX WIDTH…ONE HALF MILE
* PATH LENGTH…APPROXIMATELY 6 MILES.
* DAMAGE INFORMATION…THE PATH OF THE TORNADO WAS WELL DEFINED WITH
SIGNIFICANT TREE DAMAGE. SEVERAL FARM OUT BUILDINGS WERE DAMAGED
AND ONE HOUSE WAS PUSHED OFF ITS FOUNDATION.

3DeKalb Co.
* LOCATION…THE TRACK BEGAN 2.5 MILES SW OF SHABBONA AND ENDED 3 MILES SE OF SHABBONA.
*TIMING…FROM 4:32 O 4:37PM
*INJURIES/FATALITIES…NONE
*EF-SCALE RATING…EF-1
*ESTIMATED MAX WIND SPEED…95 MPH.
*MAX WIDTH…100 YARDS.
* PATH LENGTH…2.25 MILES.
* DAMAGE INFORMATION..NATIONAL WEATHER SERVICE PERSONNEL SURVEYED DAMAGE IN EASTERN
LEE…SOUTHERN DE KALB…AND KENDALL COUNTIES OF ILLINOIS. THE
SURVEY TEAM DETERMINED THAT MUCH OF WHAT THEY FOUND WAS STRAIGHT
LINE WIND DAMAGE…BUT ONE AREA SOUTH OF SHABBONA IN SOUTHEAST DE
KALB COUNTY WAS CONFIRMED TO BE A TORNADO.

THE MAXIMUM DAMAGE OCCURRED OVER AN APPROXIMATELY ONE MILE LONG
SEGMENT OF THE PATH WHERE THE TORNADO SNAPPED NUMEROUS UTILITY
POLES AND AROUND 80 PERCENT OF THE LARGE HARDWOOD TREES. ALONG
THE REMAINDER OF THE TORNADO PATH THERE WAS MINOR TREE DAMAGE.
MINOR SHINGLE PEELING WAS SEEN AT ONE LOCATION…BUT FOR THE MOST
PART THE TORNADO DID NOT INTERSECT ANY STRUCTURES.

THIS TORNADO PATH ALSO WAS COINCIDENT WITH A NEARLY MILE-LONG
SWATH OF LARGE HAIL THAT PRODUCED EXTENSIVE SHREDDING AND SMASHING
OF CROPS.

ADDITIONAL INFORMATION ON THE WIND DAMAGE IN THIS AREA WILL BE
PROVIDED AS IT BECOMES AVAILABLE. THE DAMAGE WAS SCATTERED AND
CONSISTENT WITH MAINLY 60-80 MPH WINDS. THIS INCLUDED ABOUT A
HALF DOZEN GRAIN BINS DENTED AND NUMEROUS LARGE TREES DOWNED.

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Posted under tornado

This post was written by Eric Sorensen on June 13, 2013

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