Red Flag Warning 2, NWS Chicago, IL

Boone County, IL, Cook County, IL, DeKalb County, IL, DuPage County, IL, Ford County, IL, Grundy County, IL, Iroquois County, IL, Kane County, IL, Kankakee County, IL, Kendall County, IL, Lake County, IL, LaSalle County, IL, Lee County, IL, Livingston County, IL, McHenry County, IL, Ogle County, IL, Will County, IL, Winnebago County, IL, Benton County, IN, Jasper County, IN, Lake County, IN, Newton County, IN, Porter County, IN

826 
WWUS83 KLOT 010051
RFWLOT

URGENT - FIRE WEATHER MESSAGE
National Weather Service Chicago IL
751 PM CDT Mon Apr 30 2018

ILZ013-014-022-023-010900-
/O.EXP.KLOT.FW.W.0001.000000T0000Z-180501T0100Z/
/O.CON.KLOT.FW.W.0002.180501T1700Z-180502T0000Z/
DuPage-Cook-Will-Kankakee-
751 PM CDT Mon Apr 30 2018

...RED FLAG WARNING REMAINS IN EFFECT FROM NOON TO 7 PM CDT
TUESDAY FOR CRITICAL FIRE WEATHER CONDITIONS FOR EASTERN ILLINOIS
AND NORTHWEST INDIANA... 
...RED FLAG WARNING WILL EXPIRE AT 8 PM CDT THIS EVENING FOR MUCH
OF NORTHERN ILLINOIS...

* Affected Area...DuPage, Cook, Will and Kankakee.

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

* Timing...This afternoon and early evening.

* Relative Humidity...As low as 22 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.

&&

$$

ILZ003>006-008-010>012-019>021-032-010200-
/O.EXP.KLOT.FW.W.0001.000000T0000Z-180501T0100Z/
Winnebago-Boone-McHenry-Lake IL-Ogle-Lee-DeKalb-Kane-La Salle-
Kendall-Grundy-Livingston-
751 PM CDT Mon Apr 30 2018

...RED FLAG WARNING WILL EXPIRE AT 8 PM CDT THIS EVENING FOR MUCH
OF NORTHERN ILLINOIS...

Winds will continue to diminish and relative humidity will
continue to slowly recover tonight.

$$

ILZ033-039-INZ001-002-010-011-019-010900-
/O.CON.KLOT.FW.W.0002.180501T1700Z-180502T0000Z/
Iroquois-Ford-Lake IN-Porter-Newton-Jasper-Benton-
751 PM CDT Mon Apr 30 2018 /851 PM EDT Mon Apr 30 2018/

...RED FLAG WARNING REMAINS IN EFFECT FROM NOON TO 7 PM CDT
TUESDAY FOR CRITICAL FIRE WEATHER CONDITIONS FOR EASTERN ILLINOIS
AND NORTHWEST INDIANA... 

* Affected Area...Lake IN, Porter, Newton, Jasper, Benton, 
  Iroquois and Ford.

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

* Timing...Tuesday afternoon and early evening.

* Relative Humidity...As low as 22 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.

&&

$$

050 
WWUS83 KLOT 010856
RFWLOT

URGENT - FIRE WEATHER MESSAGE
National Weather Service Chicago IL
356 AM CDT Tue May 1 2018

ILZ003>006-008-010>012-019>021-032-011700-
/O.EXA.KLOT.FW.W.0002.180501T1700Z-180502T0000Z/
Winnebago-Boone-McHenry-Lake IL-Ogle-Lee-DeKalb-Kane-La Salle-
Kendall-Grundy-Livingston-
356 AM CDT Tue May 1 2018

...RED FLAG WARNING IN EFFECT FROM NOON TODAY TO 7 PM CDT THIS
EVENING FOR CRITICAL FIRE WEATHER CONDITIONS FOR NORTH CENTRAL AND
NORTHEAST ILLINOIS...

* Affected Area...Winnebago, Boone, McHenry, Lake IL, Ogle, Lee, 
  DeKalb, Kane, La Salle, Kendall, Grundy and Livingston.

* Winds...Southwest 20 to 25 mph with gusts up to 35 mph.

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

* Timing...Tuesday afternoon and early evening.

* Relative Humidity...As low as 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.

&&

$$

ILZ013-014-022-023-033-039-INZ001-002-010-011-019-011700-
/O.CON.KLOT.FW.W.0002.180501T1700Z-180502T0000Z/
DuPage-Cook-Will-Kankakee-Iroquois-Ford-Lake IN-Porter-Newton-
Jasper-Benton-
356 AM CDT Tue May 1 2018 /456 AM EDT Tue May 1 2018/

...RED FLAG WARNING REMAINS IN EFFECT FROM NOON CDT /1 PM EDT/
TODAY TO 7 PM CDT /8 PM EDT/ THIS EVENING FOR CRITICAL FIRE
WEATHER CONDITIONS FOR NORTHEAST ILLINOIS AND NORTHWEST 
INDIANA...

* Affected Area...Lake IN, Porter, Newton, Jasper, DuPage, Cook, 
  Benton, Will, Kankakee, Iroquois and Ford.

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

* Timing...This afternoon and early evening.

* Relative Humidity...As low as 20 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.

&&

$$

263 
WWUS83 KLOT 011529
RFWLOT

URGENT - FIRE WEATHER MESSAGE
National Weather Service Chicago IL
1029 AM CDT Tue May 1 2018

ILZ003>006-008-010>014-019>023-032-033-039-INZ001-002-010-011-019-
020000-
/O.CON.KLOT.FW.W.0002.180501T1700Z-180502T0000Z/
Winnebago-Boone-McHenry-Lake IL-Ogle-Lee-DeKalb-Kane-DuPage-Cook-
La Salle-Kendall-Grundy-Will-Kankakee-Livingston-Iroquois-Ford-
Lake IN-Porter-Newton-Jasper-Benton-
1029 AM CDT Tue May 1 2018 /1129 AM EDT Tue May 1 2018/

...RED FLAG WARNING REMAINS IN EFFECT UNTIL 7 PM CDT /8 PM EDT/
THIS EVENING FOR CRITICAL FIRE WEATHER CONDITIONS FOR NORTH
CENTRAL AND NORTHEAST ILLINOIS, AND NORTHWEST INDIANA...

* Affected Area...Lake IN, Porter, Winnebago, Boone, McHenry, 
  Lake IL, Ogle, Lee, Newton, DeKalb, Jasper, Kane, DuPage, Cook,
   La Salle, Benton, Kendall, Grundy, Will, Kankakee, Livingston,
   Iroquois and Ford.

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

* Timing...This afternoon and early evening.

* Relative Humidity...As low as 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.

&&

$$

981 
WWUS83 KLOT 012013
RFWLOT

URGENT - FIRE WEATHER MESSAGE
National Weather Service Chicago IL
313 PM CDT Tue May 1 2018

ILZ003>006-008-010>014-019>023-032-033-039-INZ001-002-010-011-019-
020000-
/O.CON.KLOT.FW.W.0002.000000T0000Z-180502T0000Z/
Winnebago-Boone-McHenry-Lake IL-Ogle-Lee-DeKalb-Kane-DuPage-Cook-
La Salle-Kendall-Grundy-Will-Kankakee-Livingston-Iroquois-Ford-
Lake IN-Porter-Newton-Jasper-Benton-
313 PM CDT Tue May 1 2018 /413 PM EDT Tue May 1 2018/

...RED FLAG WARNING REMAINS IN EFFECT UNTIL 7 PM CDT /8 PM EDT/
THIS EVENING FOR CRITICAL FIRE WEATHER CONDITIONS FOR NORTH
CENTRAL AND NORTHEAST ILLINOIS, AND NORTHWEST INDIANA...

* Affected Area...Lake IN, Porter, Winnebago, Boone, McHenry, 
  Lake IL, Ogle, Lee, Newton, DeKalb, Jasper, Kane, DuPage, Cook,
   La Salle, Benton, Kendall, Grundy, Will, Kankakee, Livingston,
   Iroquois and Ford.

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

* Timing...Through early evening.

* Relative Humidity...As low as 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.

&&

$$

733 
WWUS83 KLOT 020006
RFWLOT

URGENT - FIRE WEATHER MESSAGE
National Weather Service Chicago IL
706 PM CDT Tue May 1 2018

ILZ003>006-008-010>014-019>023-032-033-039-INZ001-002-010-011-019-
020115-
/O.EXP.KLOT.FW.W.0002.000000T0000Z-180502T0000Z/
Winnebago-Boone-McHenry-Lake IL-Ogle-Lee-DeKalb-Kane-DuPage-Cook-
La Salle-Kendall-Grundy-Will-Kankakee-Livingston-Iroquois-Ford-
Lake IN-Porter-Newton-Jasper-Benton-
706 PM CDT Tue May 1 2018 /806 PM EDT Tue May 1 2018/

...RED FLAG WARNING HAS EXPIRED FOR NORTHERN ILLINOIS AND 
NORTHWEST INDIANA...

Gusty southwest winds will slowly diminish this evening. Relative
humidity levels will slowly increase as temperatures fall through
the 70s this evening.

$$

Area Forecast Discussion
National Weather Service Chicago/Romeoville, IL
258 PM CDT Mon Apr 30 2018

.SHORT TERM...
255 PM CDT

Through Tuesday...

Critical fire weather conditions continue across much of the CWA
this afternoon. South winds have been gusting 20 to 25 mph, and
infrequently to 30 mph across the NW CWA, since late morning.
Meanwhile, dew points have struggled to rise through the day. RH
values across much of the area this afternoon have therefore
remained in the 15-20% range, with a few sub-15% values observed.

Gusty south winds should ease somewhat through the night, but remain
fairly steady at 10-15mph. Expect a mild spring night with lows in
the 50s under mostly clear skies.

On Tuesday, the area will remain wedged between a low pressure
trough across the central Great Plains and high pressure across the
SE states. Winds will be higher than today across the area as deeper
mixing taps into 35-40kt winds in the 800-850 mb layer. Surface
gusts in the afternoon should range from 35mph across the NW CWA
and to around 30mph across the SE CWA. Temps will also be a couple
degrees warmer than today, with highs in the low 80s across much
of the area. Though dew points will rise to around 50F by Tuesday
afternoon, elevated wildfire conditions are expected as min RH
values reach 30-35%.

Some model guidance is trying to bring residual convection from IA
into the NW CWA during the afternoon. This convection will be moving
into an increasingly unfavorable environment with a strengthening
low-level cap. However, cannot rule out that a couple decaying
storms will survive this far, so have added slight chance PoPs
for generally the NW 3-4 counties.

Kluber

&&

.LONG TERM...
255 PM CDT

Tuesday night through Monday...

A jet max and associated shortwave will shift north of the area
Tuesday night, but several fast moving waves will bring periods of
showers and thunderstorms to the region. Coverage will be lower
initially, but should ramp up during the Wednesday night through
early Friday timeframe.

The trough-ridge-trough pattern in place across the country, with
the lower Great Lakes currently in the ridge portion, will slowly
make eastward progress this weak as strong southwest flow pushes
into the ridge. As the ridge axis over our area weakens Wednesday,
increasing moisture ahead of the deep trough in the west should
allow for a little better coverage of convection Wednesday, though
we will still feel some of the ridge influence which should likely
keep coverage isolated/scattered. It also still looks quite warm
in spite of increasing clouds.

Coverage should increase Wednesday night into Friday as the
western low will eject into the plains Thursday and eventually
merge with northern jet stream energy Thursday night. Timing the
individual shortwaves will again be a challenge in this pattern.
But there does appear a signal of favored times Wednesday night
into early Thursday when the low level jet ramps up over the area,
and then again Thursday night into early Friday when the main
upper trough axis will shift through. Given the slow progression
of the deep upper low, the main severe weather threat will still
be focused to the west of the Mississippi River. We do get into
window were some isolated strong to severe storms remain possible
during this period, with locally heavy downpours also a distinct
possibility. While excessive rain does not appear to be
widespread, model QPF suggests some areas could see up to around
2" of rain by early Friday.

Cooler and dry weather will return for the weekend, though
certainly not as cool as the start to last weekend. High pressure
will dominate, with a cold front on Saturday looking mostly dry,
but it will trend our temps closer to normal Saturday and below
normal Sunday.

KMD

&&

.AVIATION...
For the 18Z TAFs...

Winds remain the focus though the forecast period. South winds
will continue to gust to around 25kts through this afternoon
before gradually easing overnight. LLWS appears likely during the
overnight hours as a low-level jet shifts from IA to northern IL.
Gusty SSW winds are expected again Tuesday under increasing mid
to upper-level clouds.

Kluber

&&

.MARINE...
255 PM CDT

Surface high pressure will remain anchored over the
southeastern United States for several days, while low pressure
organizes in lee of the Rockies. Several waves of low pressure
will pass over the northern Great Lakes through early Thursday and
maintaining breezy, though sub-gale SW winds. Strongest winds will
likely hold at 30 kt over the next few days. Eventually a cold
front will setup/stall across the lake on Thursday before shifting
south of the lake on Friday. West winds to 20-25 kt early Friday
will give way to quieter conditions for the first half of the
weekend with high pressure over the lake.

KMD

&&

.LOT WATCHES/WARNINGS/ADVISORIES...
IL...Red Flag Warning...ILZ003-ILZ004-ILZ005-ILZ006-ILZ008-ILZ010-
     ILZ011-ILZ012-ILZ013-ILZ014-ILZ019-ILZ020-ILZ021-ILZ022-
     ILZ023-ILZ032 until 8 PM Monday.

IN...None.
LM...Small Craft Advisory...IL nearshore waters until 9 PM Monday.

&&

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Hazardous Weather Outlook...CORRECTED
National Weather Service Chicago/Romeoville IL
350 PM CDT Mon Apr 30 2018

ILZ003>006-008-010>014-019>023-032-033-039-INZ001-002-010-011-019-
012015-
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-
350 PM CDT Mon Apr 30 2018 /450 PM EDT Mon Apr 30 2018/

THIS HAZARDOUS WEATHER OUTLOOK IS FOR North Central Illinois...
Northeast Illinois AND Northwest Indiana.

.DAY ONE...Tonight.

WEATHER HAZARDS EXPECTED:

  Significant Fire Weather Risk.

DISCUSSION:

Windy, warm and very dry conditions will ease tonight.
The combination of very low relative humidity levels and
south winds gusting to 25 to 30 mph will result in a significant
wildfire risk. The greatest risk is expected to be along and west
of Chicago and the Interstate 55 corridor across northern
Illinois, where winds will be slightly stronger. However, the risk
will still be elevated across eastern portions of the outlook
area.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.

Tuesday...
  Limited Thunderstorm Risk.
  Elevated Fire Weather Risk.
Wednesday...
  Limited Severe Thunderstorm Risk.
Thursday...
  Elevated Thunderstorm Risk.
Friday morning...
  Limited Thunderstorm Risk.

DISCUSSION:

Windy and dry conditions will maintain elevated fire danger
concerns on Tuesday. Relative humidity values are forecast to
be above 25 percent, so it will not be as dry as today, but
still a day to keep and eye on for dry and windy conditions,
especially across areas along and east of Interstate 55.

Occasional thunderstorms are possible, especially for the
mid to late work week period. A few storms could be
severe across west central Illinois Wednesday.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will not be necessary through tonight.

&&

LMZ740>745-012015-
Winthrop Harbor to Wilmette Harbor-
Wilmette Harbor to Northerly Island-
Northerly Island to Calumet Harbor-Calumet Harbor to Gary-
Gary to Burns Harbor-Burns Harbor to Michigan City-
350 PM CDT Mon Apr 30 2018

THIS HAZARDOUS WEATHER OUTLOOK IS FOR the Illinois nearshore
waters of Lake Michigan AND the Indiana nearshore waters of Lake
Michigan.

.DAY ONE...Tonight.

  Hazardous Conditions for Small Craft through early evening.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.

There will be periodic thunderstorm chances from late Tuesday
through Thursday night. Hazardous Conditions for Small Craft are
likely at times, especially Tuesday afternoon through early
Wednesday.

&&

LMZ080-261-362-364-366-563-565-567-669-671-673-675-777-779-868-
870-872-874-876-878-012015-
Lake Michigan from Michigan City IN to St. Joseph MI 5 NM
offshore to Mid Lake-
Lake Michigan from Seul Choix Point to Rock Island Passage 5 NM
offshore to Mid Lake-
Lake Michigan South of a line from Seul Choix Point to the
Mackinac Bridge and north of a line from Charlevoix MI to South
Fox Island 5 NM offshore-
Lake Michigan from Charlevoix to Point Betsie MI 5 NM offshore to
Mid Lake-
Lake Michigan from Point Betsie to Manistee MI 5 NM offshore to
Mid Lake-
Lake Michigan from Rock Island Passage to Sturgeon Bay WI-
Lake Michigan from Sturgeon Bay to Two Rivers WI 5 NM offshore to
Mid Lake-
Lake Michigan from Two Rivers to Sheboygan WI 5 NM offshore to
Mid Lake-
Lake Michigan from Sheboygan to Port Washington WI 5 NM offshore
to Mid Lake-
Lake Michigan from Port Washington to North Point Light WI 5 NM
offshore to Mid Lake-
Lake Michigan from North Point Light to Wind Point WI 5 NM
offshore to Mid Lake-
Lake Michigan from Wind Point WI to Winthrop Harbor IL 5 NM
offshore to Mid Lake-
Lake Michigan from Winthrop Harbor to Wilmette Harbor IL 5 NM
offshore to Mid Lake-
Lake Michigan from Wilmette Harbor IL to Michigan City IN 5 NM
offshore to Mid Lake-
Lake Michigan from Pentwater to Manistee MI 5 NM offshore to Mid
Lake-
Lake Michigan from Whitehall to Pentwater MI 5 NM offshore to Mid
Lake-
Lake Michigan from Grand Haven to Whitehall MI 5 NM offshore to
Mid Lake-
Lake Michigan from Holland to Grand Haven MI 5 NM offshore to Mid
Lake-
Lake Michigan from South Haven to Holland MI 5 NM offshore to Mid
Lake-
Lake Michigan from St. Joseph to South Haven MI 5 NM offshore to
Mid Lake-
350 PM CDT Mon Apr 30 2018

THIS HAZARDOUS WEATHER OUTLOOK IS FOR the open waters of Lake
Michigan.

.DAY ONE...Tonight.

No hazardous weather is expected at this time.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.

There will be periodic thunderstorm chances from late Tuesday
through Thursday.

&&

KMD

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