Wednesday, July 6, 2016

Hazardous Weather Outlook for Mchenry Co., IL

FLUS43 KLOT 060956
HWOLOT

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
456 AM CDT WED JUL 6 2016


WINNEBAGO-BOONE-MCHENRY-LAKE ILLINOIS-OGLE-LEE-DE KALB-KANE-
DUPAGE-COOK-LA SALLE-KENDALL-GRUNDY-WILL-KANKAKEE-LIVINGSTON-
IROQUOIS-FORD-LAKE INDIANA-PORTER-NEWTON-JASPER-BENTON-
456 AM CDT WED JUL 6 2016 /556 AM EDT WED JUL 6 2016/

THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTH CENTRAL ILLINOIS...
NORTHEAST ILLINOIS AND NORTHWEST INDIANA.

.DAY ONE...TODAY AND TONIGHT.

WEATHER HAZARDS EXPECTED:
ELEVATED THUNDERSTORM RISK...WITH AN ASSOCIATED:
LIMITED HAIL RISK...UP TO 1 INCH.
ELEVATED THUNDERSTORM WIND DAMAGE RISK...UP TO 60 MPH.
LIMITED EXCESSIVE HEAT RISK.

DISCUSSION:

AN AREA OF STRONG THUNDERSTORMS WILL CONTINUE TO SAG SLOWLY
SOUTH OF THE ILLINOIS AND KANKAKEE RIVER VALLEYS WHILE
WEAKENING EARLY THIS MORNING. AN OUTFLOW BOUNDARY FROM THESE
STORMS MAY BECOME THE FOCUS FOR ADDITIONAL ISOLATED TO
SCATTERED THUNDERSTORM DEVELOPMENT THIS AFTERNOON. DESPITE
RELATIVELY WEAK WINDS ALOFT...VERY WARM AND HUMID CONDITIONS
WILL RESULT IN MODERATE TO STRONG INSTABILITY THIS AFTERNOON.
A FEW OF THE STRONGEST STORMS MAY PRODUCE LOCALIZED SEVERE
WEATHER...PRIMARILY IN THE FORM OF DAMAGING WINDS...LATER
THIS AFTERNOON INTO THIS EVENING.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY.

THURSDAY...
ELEVATED SEVERE THUNDERSTORM RISK.
LIMITED EXCESSIVE HEAT RISK.
FRIDAY...
LIMITED THUNDERSTORM RISK.
HIGH SWIM RISK.
SATURDAY...
HIGH SWIM RISK.
MONDAY AND TUESDAY...
LIMITED THUNDERSTORM RISK.

DISCUSSION:

LOW PRESSURE WILL DEVELOP OVER THE CENTRAL PLAINS BY EARLY
THURSDAY...AND WILL LIFT NORTHEAST TO THE NORTHERN GREAT LAKES
THROUGH FRIDAY MORNING. THUNDERSTORMS WILL LIKELY BECOME FAIRLY
NUMEROUS THURSDAY AND THURSDAY NIGHT...WITH THE POTENTIAL FOR
SEVERE WEATHER ESPECIALLY DURING THE AFTERNOON AND EVENING
HOURS. THE POTENTIAL FOR VERY STRONG DAMAGING WINDS...LARGE
HAIL AND EVEN AN ISOLATED TORNADO WILL EXIST ESPECIALLY OVER
NORTH CENTRAL ILLINOIS LATE THURSDAY...WITH THE POTENTIAL FOR
DAMAGING WINDS CONTINUING INTO THURSDAY NIGHT ACROSS THE ENTIRE
OUTLOOK AREA.

.SPOTTER INFORMATION STATEMENT...

SPOTTERS MAY BE NEEDED THURSDAY AFTERNOON AND EVENING.

GENERAL STORM MOTION OF THE DAY:

MOVING TO THE SOUTHEAST AT 25 MPH.

&&


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