McHenry County, Illinois
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The National Weather Service's Watches, Warnings and Advisories by state counties include: Thunderstorm, Tornado, Flood, Flash Flood, Winter Storm, High Wind, Gale, Small Aircraft, High Surf, Marine, Heat, Air Quality, Ashfall, Hazardous, and Special Statements.
Weather Alerts: McHenry County, Illinois
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Air Quality Alert
ILZ005-006-012>014-020>022-241015-
MCHENRY-LAKE IL-KANE-DUPAGE-COOK-KENDALL-GRUNDY-WILL-
INCLUDING THE CITIES OF...WOODSTOCK...WAUKEGAN...AURORA...ELGIN...
WHEATON...CHICAGO...OSWEGO...MORRIS...JOLIET
512 AM CDT SAT JUL 23 2016

...AIR QUALITY ALERT IN EFFECT UNTIL MIDNIGHT CDT TONIGHT...

THE ILLINOIS ENVIRONMENTAL PROTECTION AGENCY HAS DETERMINED THAT AN
AIR POLLUTION ACTION DAY WILL BE DECLARED FOR THE GREATER CHICAGO
METROPOLITAN AREA AND IS IN EFFECT UNTIL MIDNIGHT CDT TONIGHT.

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 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. RESIDENTS ARE ALSO URGED TO REDUCE
POLLUTION LEVELS. AQI FORECAST AND TIPS ON HOW YOU CAN REDUCED YOUR
EMISSIONS CAN BE FOUND AT WWW.CLEANTHEAIR.ORG.

INFORMATION AND AQI LEVELS CAN ALSO BE FOUND AT WWW.EPA.STATE.IL.US
AND AT WWW.AIRNOW.GOV. MEDIA CONTACT...217 299 6057.

$$

Flash Flood Warning
ILC007-111-201-240400-
/O.CON.KLOT.FF.W.0006.000000T0000Z-160724T0400Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
WINNEBAGO IL-BOONE IL-MCHENRY IL-
724 PM CDT SAT JUL 23 2016

...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 1100 PM CDT
SATURDAY FOR SOUTHEASTERN WINNEBAGO...SOUTHERN BOONE AND SOUTHWESTERN
MCHENRY COUNTIES...

AT 718 PM CDT...WIDESPREAD FLOODING WAS OCCURRING ACROSS THE WARNED
AREA. RADAR RAINFALL ESTIMATES INDICATE THAT BETWEEN THREE AND AS
MUCH AS FOUR AND A HALF INCHES OF RAIN HAD FALLEN FROM EARLIER
STORMS. ANOTHER LINE OF THUNDERSTORMS WAS APPROACHING FROM THE WEST
AND WILL IMPACT THE WARNED AREA AFTER 815 PM CDT. ADDITIONAL
RAINFALL OF A HALF TO THREE QUARTERS OF AN INCH IS POSSIBLE WITH
THESE STORMS.

FLASH FLOODING IS ALREADY OCCURRING...WITH SEVERAL REPORTS OF CLOSED
ROADS AND STUCK VEHICLES FROM THE SOUTHEAST SIDE OF ROCKFORD...TO
CHERRY VALLEY AND BELVIDERE.

SOME LOCATIONS THAT WILL CONTINUE TO EXPERIENCE FLOODING INCLUDE...
ROCKFORD...BELVIDERE...MARENGO...ROCKFORD AIRPORT...CHERRY
VALLEY...DAVIS JUNCTION AND NEW MILLFORD.

INCLUDING THE FOLLOWING INTERSTATES...

I-39 BETWEEN MILE MARKERS 115 AND 123.
I-90 BETWEEN MILE MARKERS 42 AND 64.

THIS INCLUDES... BOONE COUNTY FAIRGROUNDS.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TURN AROUND...DONT DROWN WHEN ENCOUNTERING FLOODED ROADS. MOST FLOOD
DEATHS OCCUR IN VEHICLES.

&&

LAT...LON 4230 8859 4215 8859 4215 8914 4228 8914

$$

Flood Advisory
ILC097-111-240345-
/O.NEW.KLOT.FA.Y.0039.160723T2244Z-160724T0345Z/
/00000.N.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
MCHENRY IL-LAKE IL-
544 PM CDT SAT JUL 23 2016

THE NATIONAL WEATHER SERVICE IN CHICAGO HAS ISSUED A

* URBAN AND SMALL STREAM FLOOD ADVISORY FOR POOR DRAINAGE AREAS
FOR...
SOUTHEASTERN MCHENRY COUNTY IN NORTHEASTERN ILLINOIS...
LAKE COUNTY IN NORTHEASTERN ILLINOIS...

* UNTIL 1045 PM CDT

* AT 540 PM CDT...DOPPLER RADAR INDICATED HEAVY RAIN DUE TO
THUNDERSTORMS. THIS WILL CAUSE URBAN AND SMALL STREAM FLOODING.
OVERFLOWING POOR DRAINAGE AREAS WILL RESULT IN MINOR FLOODING IN
THE ADVISORY AREA. UP TO TWO INCHES OF RAIN HAS ALREADY FALLEN.

* SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE... ISLAND
LAKE...WAUCONDA...LINDENHURST...LAKE VILLA... MUNDELEIN...LAKE
VILLA AND LIBERTYVILLE.

ADDITIONAL RAINFALL OF ONE TO TWO INCHES IS EXPECTED OVER THE AREA.
THIS ADDITIONAL RAIN WILL LIKELY PRODUCE MINOR FLOODING.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE PONDING OF WATER IN
URBAN AREAS...HIGHWAYS...STREETS AND UNDERPASSES AS WELL AS OTHER
POOR DRAINAGE AREAS AND LOW LYING SPOTS. DO NOT ATTEMPT TO TRAVEL
ACROSS FLOODED ROADS. FIND ALTERNATE ROUTES.

&&

LAT...LON 4249 8780 4239 8781 4238 8781 4236 8782
4237 8782 4233 8783 4233 8782 4231 8782
4230 8783 4229 8783 4221 8780 4215 8776
4218 8829 4234 8828 4236 8810 4250 8809

$$

Severe Thunderstorm Watch
ILC007-031-037-043-063-089-093-097-099-103-111-141-197-201-240300-
/O.NEW.KLOT.SV.A.0412.160723T2023Z-160724T0300Z/

THE NATIONAL WEATHER SERVICE HAS ISSUED SEVERE THUNDERSTORM WATCH
412 IN EFFECT UNTIL 10 PM CDT THIS EVENING FOR THE FOLLOWING
AREAS

IN ILLINOIS THIS WATCH INCLUDES 14 COUNTIES

IN NORTH CENTRAL ILLINOIS

BOONE DE KALB LA SALLE
LEE OGLE WINNEBAGO

IN NORTHEAST ILLINOIS

COOK DUPAGE GRUNDY
KANE KENDALL LAKE IL
MCHENRY WILL

THIS INCLUDES THE CITIES OF...AURORA...CHICAGO...DEKALB...DIXON...
DOUGLAS PARK...HUMBOLDT PARK...HYDE PARK...JOLIET...LAKEVIEW...
LINCOLN PARK...LOGAN SQUARE...MORRIS...OREGON...OSWEGO...
OTTAWA AND WHEATON.

$$

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Providing "weather, water cycle, and climate forecasts and warnings for the United States, its territories, adjacent waters and ocean areas, for the protection of life and property and the enhancement of the national economy."
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