Windy, Dry and High 80°F with Red Flag Warning for Critical Fire Weather

Critical fire weather conditions have continued across much of the Chicagoland forecast area late this morning and this afternoon. South winds have been gusting 20 to 25 mph, and infrequently to 30 mph across the northwest area of Chicagoland.

Red Flag Warning in effect from April 30, 12:00 PM CDT until April 30, 08:00 PM CDT

Dew points have struggled to rise through the day with a reading of 16°F at 4:51 a.m. at O’Hare, and a rise to only 25°F (dew point) in the afternoon. Relative Humidity (RH) was only 14% at 2:51 p.m. and 3:51 p.m. at O’Hare.

Several small mulch fires or wood chip fires were reported in the northwest suburbs, including one in front of LA Fitness and one near Arlington Heights Road and Rand Road. Both were extinguished in a short time with only one fire engine on the scene. Libertyville firefighters were dispatched about 3:00 p.m. to a brush fire near St Marys Rd between Oak Trail Drive and Old School Road in the Mettawa/Libertyville area. McHenry firefighters were called to extinguish a fire in a pile of mulch in front of Home Depot on North Richmond Road.

Weather Radar (also nexrad.chgowx.com) in northeast Illinois is clear.


 O’HARE FORECAST … 

This Afternoon: Sunny, with a high near 78. South southwest wind around 15 mph, with gusts as high as 30 mph.

Tonight: Partly cloudy, with a low around 54. South wind around 15 mph, with gusts as high as 25 mph.

Tuesday: Sunny, with a high near 82. Breezy, with a south southwest wind 15 to 20 mph, with gusts as high as 30 mph.

Tuesday Night: A 30 percent chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 60. South southwest wind around 15 mph, with gusts as high as 30 mph.

Wednesday: A 30 percent chance of showers and thunderstorms, mainly after 1pm. Mostly cloudy, with a high near 79. Southwest wind around 15 mph, with gusts as high as 25 mph.

Wednesday Night: Showers likely and possibly a thunderstorm. Cloudy, with a low around 60. Chance of precipitation is 70%.

Thursday: A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 75.

Thursday Night: Showers and possibly a thunderstorm. Cloudy, with a low around 54.

Friday: A slight chance of showers before 1pm. Mostly sunny, with a high near 70.

Friday Night: Mostly clear, with a low around 49.

Saturday: Sunny, with a high near 65.

Saturday Night: Mostly clear, with a low around 42.

Sunday: Mostly sunny, with a high near 65.





april.chicagoweatherstation.com

Arlingtoncardinal.com/radar

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URGENT – FIRE WEATHER MESSAGE
National Weather Service Chicago IL
1058 AM CDT Mon Apr 30 2018

ILZ013-014-021>023-032-010100-
/O.EXA.KLOT.FW.W.0001.180430T1700Z-180501T0100Z/
DuPage-Cook-Grundy-Will-Kankakee-Livingston-
1058 AM CDT Mon Apr 30 2018

…RED FLAG WARNING IN EFFECT FROM NOON TODAY TO 8 PM CDT THIS
EVENING FOR CRITICAL FIRE WEATHER CONDITIONS FOR PORTIONS OF
NORTHERN ILLINOIS…

The National Weather Service in Chicago has issued a Red Flag
Warning for critical fire weather conditions, which is in effect
from noon until 8 PM CDT this evening.

* Affected Area…DuPage, Cook, Grundy, Will, Kankakee and
Livingston.

* 20 Foot Winds…South 15 to 20 mph with gusts up to 30 mph.

* Timing…This afternoon and early evening.

* Relative Humidity…As low as 15 to 25 percent.

* Impacts…The combination of strong winds, very low relative
humidity, exceptionally dry fuels, and warm temperatures will
promote extremely dangerous behavior of any fires. Any outdoor
burning is strongly discouraged Today.

PRECAUTIONARY/PREPAREDNESS ACTIONS…

A Red Flag Warning means that critical fire weather conditions
are either occurring now….or will shortly. A combination of
strong winds…low relative humidity…and warm temperatures can
contribute to extreme fire behavior.