Severe Thunderstorm Warning 9, NWS Chicago, IL

ILZ-001-002-172230

NATIONAL WEATHER SERVICE ROCKFORD IL
SPECIAL WEATHER STATEMENT
4 40 PM CDT SUN JUN 17 1990

...TONADO WATCH FOR NORTHERN ILLINOIS UNTIL 10 PM...

AT 4 30 PM CDT...RADAR INDICATED A SEVERE THUNDERSTORM ACROSS THE
SOUTHERN PART OF WHITESIDE COUNTY...NEAR PROPHETSTOWN...WHICH IS
ABOUT 25 MILES NORTHEAST OF MOLINE...ILLINOIS. SO FAR...NO REPORTS OF
SEVERE WEATHER HAVE BEEN RECEIVED FROM THIS STROM. THE STORM WAS MOVING
TO THE NORTHEAST AT 30 MPH...AND SHOULD PASS NEAR ROCK FALLS AND INTO
WESTERN LEE COUNTY NEAR HARMON WITHIN THE NEXT HALF HOUR.

CONDITIONS COUNTINUE TO REMAIN VERY UNSTABLE AND THNUDERSTORMS COULD
DEVELOP AND BECOME SEVERE AT ANY TIME WITH THE POSSIBLITY OF A TORNADO.
EVERYONE ACROSS NORTHERN ILLINOIS SHOULD BE PREPARED TO MOVE TO A PLACE
OF SAFETY IF CONDITIONS BECOME THREATENING...AND SHOULD LISTEN FOR
LATER STATEMENTS AND POSSIBLE WARNINGS DURING THE EVENING.

ATTN IST DIST...1...2...16.
SANDERS

ILZ-001-002-172300

NATIONAL WEATHER SERVICE ROCKFORD IL
SPECIAL WEATHER STATEMENT
5 12 PM CDT SUN JUN 17 1990

...TONADO WATCH FOR NORTHERN ILLINOIS UNTIL 10 PM...

AT 5 PM CDT...RADAR INDICATED A STRONG THUNDERSTORM ENTERING THE
WESTERN HALF OF LEE COUNTY. THE MOST INTENSE PART OF THE STORM WAS
ABOUT 10 MILES WEST SOUTHWEST OF MAYTOWN...WHICH IS ABOUT 55 MILES
SOUTHWEST OF ROCKFORD. NO SEVERE WEATHER WAS REPORTED WITH THIS STORM
WHEN IT WAS IN WHITESIDE COUNTY...AND THE STROM HAS DECREASED IN
INTENSITY DURING THE LAST 30 MINUTES.

THE TREND FOR THUNDERSTORM DEVELOPMENT HAS SHIFTED SOUTHWARD INTO
CENTRAL ILLINOIS DURING THE LAST HALF HOUR...ALTHOUGH CONDITIONS IN
NORTHERN ILLINOIS REMAIN UNSTABLE ENOUGH FOR THUNDERSTORMS TO DEVELOP
AND BECOME SEVERE.  EVREYONE ACROSS NORTHERN ILLINOIS SHOULD CONTINUE
TO LISTEN FOR LATER STATEMENTS AND POSSIBLE WARNINGS DURING THE EVENING.
ATTN IST DIST...1...2...16.
SANDERS

ILZ-001-002-172330

NATIONAL WEATHER SERVICE ROCKFORD IL
SPECIAL WEATHER STATEMENT
5 35 PM CDT SUN JUN 17 1990

...TORNADO WATCH FOR WINNEBAGO...BOONE...OGLE...LEE...AND
   DE KALB COUNTIES CONTINUE UNTIL 10 PM...
...TORNADO WATCH FOR JO DAVIS...CARROLL...AND STEPHENSON
   COUNTIES HAS BEEN CANCELED...

AT 5 30 PM CDT...A COLD FRONT WAS MOVING ACROSS THE NORTHWESTERN
CORNER OF ILLINOIS...WHICH HAS ENDED THE THREAT OF SEVERE WEATHER
FOR THAT AREA. MEANWHILE...RADAR INDICATED A VERY STRONG THUNDERSTORM
ALONG THE LEE AND BUREAU COUNTY LINE. THE MOST INTENSE PART OF THE
STORM REMAINED IN BUEARU COUNTY...NEAR THE TOWN OF VAN ORIN...
WHICH IS ABOUT 55 MILES SOUTH OF ROCKFORD. THE STORM IS NOW MOVING
ALMOST STRAIGHT EAST AT 35 TO 40 MPH...AND TAKE THE STRONGEST PART
OF THE STORM SOUTH OF LEE AND DE KALB COUNTIES.

NO OTHER THUNDERSTORMS WERE INDICATED OVER THE REST OF NORTHERN
ILLINOIS...HOWEVER THUNDERSTORMS COULD STILL DEVELOP AND
BECOME SEVERE MAINLY TO THE EAST AND SOUTH OF ROCKFORD
DURING THE NEXT SEVERAL HOURS.

ATTN ISP DIST...1...2...16.
SANDERS

ILZ003-180000-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE CHICAGO IL
5 45 PM CDT SUN JUN 17 1990

A TORNADO WATCH IS IN EFFECT FOR NORTHERN AND CENTRAL ILLINOIS
UNTIL 10 PM CDT.

SCATTERED THUNDERSTORMS HAVE DEVELOPED IN BANDS THROUGH THE EAST
HALF OF NORTHERN ILLINOIS SOUTHWEST TOWARD ST. LOUIS. THE STORMS
ARE MOVING EAST AT 30 MPH.

THE AIRMASS REMAINS VERY HOT AND HUMID..AND THERE IS STILL THE POTENTIAL
FOR SOME OF THESE STORMS TO BECOME SEVERE. PEOPLE IN THE WATCH AREA
SHOULD BE PREPARED FOR RAPIDLY DEVELOPING STORMS AND TAKE SHELTER IF
THREATENING WEATHER APPROACHES.

STAY TUNED TO NOAA WEATHER RADIO...OR LOCAL RADIO AND TELEVISION
STATIONS FOR UPDATES ON THE POSSIBILITY FOR SEVERE WEATHER.

HOLLINGSWORTH

ILZ-001-002-180030

NATIONAL WEATHER SERVICE ROCKFORD IL
SPECIAL WEATHER STATEMENT
6 17 PM CDT SUN JUN 17 1990

...TORNADO WATCH FOR WINNEBAGO...BOONE...OGLE...LEE...AND
   DE KALB COUNTIES HAS BEEN CANCELED...AS WELL AS THE REST
   ON NORTHERN ILLINOIS...

AT 6 10 PM CDT...A COLD FRONT WAS MOVING RAPIDLY EASTWARD ACROSS THE
ROCKFORD AREA AND INTO NORTHEASTERN ILLINOIS. THIS HAS ENDED THE THREAT
OF SEVERE WEATHER FOR NORTHERN ILLINOIS. RADAR INDICATED A VERY STRONG
THUNDERSTORM ALONG THE DE KALB AND LA SALLE COUNTY LINE...WHICH WAS
MOVING EAST AT 35 TO 40 MPH. THE STORM SHOWS SIGNS OF DEVELOPING
NORTHWARD INTO CENTRAL DE KALB COUNTY WHICH COULD PRODUCE VERY STRONG
WINDS AND POSSIBLE HAIL FOR THAT AREA FOR THE NEXT 30 MINUTES...UNTIL
THE STORM TO THE EAST INTO KANE AND KENDALL COUNTIES.

NO OTHER THUNDERSTORMS WERE INDICATED OVER THE REST OF NORTHERN
ILLONOIS AND NONE WILL BE EXPECTED FOR THE REST OF TONIGHT.

ATTN ISP DIST...1...2...16.
SANDERS

ILZ003-180030-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE CHICAGO IL
6 35 PM CDT SUN JUN 17 1990

AT 6 30PM A STRONG THUNDERSTORM WAS INDICATED BY RADAR IN NORTHERN
LASALLE COUNTY NEAR EARLVILLE...WHICH IS ABOUT 35 MILES WEST SOUTHWEST
OF AURORA...MOVING EAST AT 35 TO 40 MPH.

TOWNS IN THE PATH OF THIS STORM IN NORTH LASALLE...NORTH KENDALL
...AND SOUTH KANE COUNTIES INCLUDE LELAND...SANDWICH...PLANO...
BRISTOL...AND MONTGOMERY. THE STORM COULD EFFECT AURORA BY 7 15 PM.

INTENSE LIGHTNING...HEAVY RAIN...HAIL AND STRONG WINDS ARE LIKELY
WITH THIS STORM. PERSONS IN THIS AREA SHOULD BE ALERT FOR THE
POSSIBILITY OF SEVERE WEATHER AND STAY TUNED TO LOCAL MEDIA FOR
WEATHER UPDATES.

HOLLINGSWORTH