We already had a very severe and stormy night but it kinda carried into the next day. We start off with a
small group of storms expecting to produce heavy windand large hail. A Severe Thunderstorm Warning is issed for the
area, even though the storm was located 6mi sw of Marengo we still got a good chunk of this storm.
BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
1107 AM CDT FRI JUN 19 2009
THE NATIONAL WEATHER SERVICE IN CHICAGO HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR... NORTHWESTERN COOK COUNTY IN NORTHEAST ILLINOIS...
NORTHERN KANE COUNTY IN NORTHEAST ILLINOIS... SOUTHERN LAKE COUNTY IN NORTHEAST ILLINOIS...
SOUTHERN MCHENRY COUNTY IN NORTHEAST ILLINOIS...
* UNTIL NOON CDT...
* AT 1105 AM CDT...NATIONAL WEATHER SERVICE RADAR INDICATED A SEVERE
THUNDERSTORM LOCATED 6 MILES SOUTHWEST OF MARENGO...AND MOVING EAST
AT 50 MPH. THIS STORM IS CAPABLE OF PRODUCING QUARTER SIZE HAIL...
AND DESTRUCTIVE WINDS IN EXCESS OF 70 MPH.
* THE SEVERE THUNDERSTORM WILL BE NEAR... HUNTLEY BY 1120 AM...
LAKE IN THE HILLS...AND LAKEWOOD BY 1125 AM... ALGONQUIN...OAKWOOD HILLS...AND CARPENTERSVILLE BY 1130 AM...
TOWER LAKES...AND ISLAND LAKE BY 1135 AM...
LAKE ZURICH...AND BARRINGTON BY 1140 AM...
PRECAUTIONARY/PREPAREDNESS ACTIONS...
THIS IS A DANGEROUS STORM. SEEK SHELTER INSIDE A STURDY BUILDING AND
STAY AWAY FROM WINDOWS!
A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 300 PM FRIDAY
AFTERNOON FOR NORTHEASTERN ILLINOIS.
Photos Dave took of the hail, LOT report of the hail as we called it in.
AT 845 AM...TRAINED WEATHER SPOTTERS REPORTED A SEVERE
THUNDERSTORM CAPABLE OF PRODUCING GOLFBALL SIZE HAIL...
AND DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM WAS LOCATED
NEAR MARENGO...MOVING EAST AT 30 MPH.
Shortly after the storm passes we notice a wallcloud on the backend of the storm and prepare to head out after it. We dont have any photos of it as visibility was obscurred by the rain. Within a few minutes a Tornado Warning is issued for southern McHenry Co and northern Kane Co.
Tornado Warning
TORNADO WARNING ILC089-111-191430- /O.NEW.KLOT.TO.W.0005.090619T1355Z-090619T1430Z/
BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL 855 AM CDT FRI JUN 19 2009
THE NATIONAL WEATHER SERVICE IN CHICAGO HAS ISSUED A
* TORNADO WARNING FOR...
NORTHERN KANE COUNTY IN NORTHEAST ILLINOIS...
SOUTHERN MCHENRY COUNTY IN NORTHEAST ILLINOIS...
* UNTIL 930 AM CDT...
* AT 852 AM...NATIONAL WEATHER SERVICE RADAR INDICATED STRONG
ROTATION IN A SEVERE THUNDERSTORM 8 MILES WEST OF HUNTLEY...MOVING
EAST AT 25 MPH. * THE TORNADO WILL BE NEAR...
HUNTLEY BY 910 AM...
LAKEWOOD BY 915 AM...
GILBERTS BY 920 AM...
ALGONQUIN...
LAKE IN THE HILLS BY 925 AM...
OAKWOOD HILLS...AND
WEST DUNDEE BY 930 AM...
We Chase after the wall cloud as the warning is issued but any view of the storm becomes
scurred again by the rain. Video above also includes the chase segment.
SPC storm reports for the day : http://www.spc.noaa.gov/climo/reports/090619_rpts.html
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