Excessive Heat Warning Remains in Effect Until 4PM Saturday; Air Quality Alert Until 7PM

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‘Cool’ front — technically a cold front expected to arrive from Canada to Arlington Heights between 2 p.m. and 3 p.m. Saturday.

URGENT – WEATHER MESSAGE
NATIONAL WEATHER SERVICE CHICAGO IL
406 AM CDT SAT JUL 7 2012

ILZ014-071715-
/O.CON.KLOT.EH.W.0001.000000T0000Z-120707T2100Z/
COOK-
INCLUDING THE CITY OF…CHICAGO
406 AM CDT SAT JUL 7 2012

…EXCESSIVE HEAT WARNING REMAINS IN EFFECT UNTIL 4 PM CDT THIS
AFTERNOON…

* TEMPERATURES…TEMPERATURES WILL AGAIN TOP OUT IN THE UPPER 90S
TO NEAR 100 EARLY THIS AFTERNOON BEFORE COOLER AIR ARRIVES
BEHIND A COLD FRONT LATE THIS AFTERNOON. TEMPERATURES WILL FALL
INTO THE 80S LATER THIS AFTERNOON BRINGING AN END TO THE
OPPRESSIVE HEAT.

* HEAT INDICES…WILL PEAK AROUND 105 DEGREES EARLY THIS AFTERNOON.

* OTHER…AN AIR QUALITY ALERT HAS BEEN DECLARED BY THE ILLINOIS
ENVIRONMENTAL PROTECTION AGENCY AGAIN TODAY. EXPOSURE TO ELEVATED
OZONE AND PARTICULATE LEVELS WILL ONLY SERVE TO INCREASE
STRESSES ON THE BODY…ESPECIALLY FOR THE VERY YOUNG AND
ELDERLY…AS WELL AS PEOPLE WITH PULMONARY OR RESPIRATORY
DISEASE. ANYONE IN THESE GROUPS SHOULD LIMIT EXPOSURE TO OUTDOOR
AIR.

* IMPACTS…THE LONG DURATION OF THIS HEAT WAVE COMBINED WITH NO
RELIEF FROM THE OPPRESSIVE CONDITIONS AT NIGHT WILL PROVE
PARTICULARLY TAXING TO ANYONE WITHOUT ACCESS TO AIR
CONDITIONING. PERSONS WITHOUT AIR CONDITIONING…ESPECIALLY
THE SICK AND ELDERLY WHO ARE MORE SUSCEPTIBLE TO HEAT EFFECTS
SHOULD SPEND AT LEAST SEVERAL HOURS EACH DAY IN AIR
CONDITIONING TO HELP REDUCE THE ACCUMULATIVE EFFECT AND TOLL
THE HEAT WILL TAKE ON YOUR BODY. PERSONS IN THE CITY OF
CHICAGO CAN CALL 3 1 1 FOR CITY SERVICES INCLUDING WELL BEING
CHECKS AND FOR INFORMATION ON THE LOCATIONS OF THE NEAREST
COOLING CENTERS.

PRECAUTIONARY/PREPAREDNESS ACTIONS…

TAKE EXTRA PRECAUTIONS…IF YOU WORK OR SPEND TIME OUTSIDE. WHEN
POSSIBLE…RESCHEDULE STRENUOUS ACTIVITIES TO EARLY MORNING OR
EVENING. KNOW THE SIGNS AND SYMPTOMS OF HEAT EXHAUSTION AND HEAT
STROKE. WEAR LIGHT WEIGHT AND LOOSE FITTING CLOTHING WHEN
POSSIBLE AND DRINK PLENTY OF WATER.

TO REDUCE RISK DURING OUTDOOR WORK…THE OCCUPATIONAL SAFETY AND
HEALTH ADMINISTRATION RECOMMENDS SCHEDULING FREQUENT REST BREAKS
IN SHADED OR AIR CONDITIONED ENVIRONMENTS. ANYONE OVERCOME BY
HEAT SHOULD BE MOVED TO A COOL AND SHADED LOCATION. HEAT STROKE
IS A LIFE THREATENING EMERGENCY…CALL 9 1 1.

AIR QUALITY ALERT

MCHENRY-LAKE IL-KANE-DUPAGE-COOK-KENDALL-GRUNDY-WILL-
401 PM CDT FRI JUL 6 2012

…AIR QUALITY ALERT IN EFFECT FROM 3 PM THIS AFTERNOON TO 7 PM CDT
SATURDAY…

THE ILLINOIS ENVIRONMENTAL PROTECTION AGENCY HAS DETERMINED THAT THE AIR
POLLUTION ACTION DAY DECLARED FOR FRIDAY JULY 6TH AND SATURDAY
JULY 7TH FOR THE GREATER CHICAGO METROPOLITAN AREA INCLUDING THE
COUNTIES OF …

COOK…DUPAGE…KANE…KENDALL…GRUNDY…LAKE…MCHENRY AND WILL.

AN AIR POLLUTION ACTION DAY IS DECLARED WHEN WEATHER CONDITIONS ARE SUCH
THAT WIDESPREAD OZONE AND OR PARTICULATE LEVELS ARE EXPECTED TO BE AT OR
ABOVE THE UNHEALTHY FOR SENSITIVE GROUPS CATEGORY OF THE AIR QUALITY
INDEX. ACTIVE CHILDREN AND ADULTS AND ESPECIALLY PEOPLE WITH PULMONARY
OR RESPIRATORY DISEASE SUCH AS ASTHMA SHOULD LIMIT PROLONGED OUTDOOR
ACTIVITY.

PARTICIPANTS IN THE…PARTNERS FOR CLEAN AIR PROGRAM…ARE REQUESTED TO
INITIATE THEIR ACTIVITIES. AREA RESIDENTS ARE ALSO URGED TO REDUCE
POLLUTION LEVELS. AQI FORECASTS AND TIPS ON HOW YOU CAN REDUCE YOUR
EMISSIONS CAN BE FOUND AT WWW.CLEANTHEAIR.ORG

THESE ARE THE 6TH AND 7TH AIR POLLUTION ACTION DAYS IN 2012.

INFORMATION AND AQI LEVELS CAN ALSO BE FOUND AT WWW.EPA.STATE.IL.US
AND AT WWW.AIRNOW.GOV



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