Red Flag Warning 2, NWS Chicago, IL

516 
WWUS83 KLOT 170224
RFWLOT

URGENT - FIRE WEATHER MESSAGE
National Weather Service Chicago IL
924 PM CDT Fri Oct 16 2020

...DANGEROUS FIRE WEATHER CONDITIONS LIKELY SATURDAY...

ILZ023-032-033-039-INZ001-002-010-011-019-171030-
/O.CON.KLOT.FW.W.0002.201017T1500Z-201018T0100Z/
Kankakee-Livingston-Iroquois-Ford-Lake IN-Porter-Newton-Jasper-
Benton-
924 PM CDT Fri Oct 16 2020 /1024 PM EDT Fri Oct 16 2020/

...RED FLAG WARNING REMAINS IN EFFECT FROM 10 AM CDT /11 AM EDT/
TO 8 PM CDT /9 PM EDT/ SATURDAY FOR SIGNIFICANT FIRE WEATHER RISK
FOR PORTIONS OF EAST CENTRAL ILLINOIS AND NORTHWEST INDIANA...

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

* Winds...South 20 to 30 mph with gusts up to 50 mph.

* Timing...Late Saturday morning through early Saturday evening.

* Relative Humidity...As low as 22 percent.

* Impacts...The combination of strong winds, very low relative 
  humidity, mild temperatures, and exceptionally dry fuels will 
  likely promote extremely dangerous behavior of any fires on 
  Saturday. Any fires that develop will likely spread rapidly. 
  Outdoor burning is not recommended.

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.

&&

$$

ILZ010>014-019>022-171030-
/O.CON.KLOT.FW.A.0002.201017T1500Z-201018T0100Z/
Lee-De Kalb-Kane-DuPage-Cook-La Salle-Kendall-Grundy-Will-
924 PM CDT Fri Oct 16 2020

...FIRE WEATHER WATCH REMAINS IN EFFECT FROM SATURDAY MORNING
THROUGH SATURDAY EVENING FOR SIGNIFICANT FIRE WEATHER RISK FOR
MUCH OF NORTHERN ILLINOIS SOUTH OF INTERSTATE 90...

* Affected Area...Lee, De Kalb, Kane, DuPage, Cook, La Salle, 
  Kendall, Grundy and Will.

* Winds...South 20 to 30 mph with gusts up to 50 mph.

* Timing...Late Saturday morning through early Saturday evening.

* Relative Humidity...As low as 27 percent.

* Impacts...The combination of strong winds, very low relative 
  humidity, mild temperatures, and exceptionally dry fuels will 
  likely promote extremely dangerous behavior of any fires on 
  Saturday. Any fires that develop will likely spread rapidly. 
  Outdoor burning is not recommended.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Fire Weather Watch means that critical fire weather conditions
are forecast to occur. Listen for later forecasts and possible
Red Flag Warnings.

&&

$$

BORCHARDT/LEATHERWOOD

546 
WWUS83 KLOT 170816
RFWLOT

URGENT - FIRE WEATHER MESSAGE
National Weather Service Chicago IL
316 AM CDT Sat Oct 17 2020

...HIGH FIRE DANGER TODAY...

ILZ010>014-019>022-171630-
/O.UPG.KLOT.FW.A.0002.201017T1500Z-201018T0100Z/
/O.EXA.KLOT.FW.W.0002.201017T1500Z-201018T0100Z/
Lee-De Kalb-Kane-DuPage-Cook-La Salle-Kendall-Grundy-Will-
316 AM CDT Sat Oct 17 2020

...RED FLAG WARNING IN EFFECT FROM 10 AM THIS MORNING TO 8 PM CDT
THIS EVENING FOR MUCH OF NORTHERN ILLINOIS SOUTH OF INTERSTATE
90...

The National Weather Service in Chicago has issued a Red Flag
Warning, which is in effect from 10 AM this morning to 8 PM CDT 
this evening. The Fire Weather Watch is no longer in effect.

* Affected Area...Lee, De Kalb, Kane, DuPage, Cook, La Salle, 
  Kendall, Grundy and Will.

* Winds...South 25 to 35 mph with gusts to 50 mph.

* Timing...Late this morning through early this evening.

* Relative Humidity...Around 25 percent.

* Impacts...The combination of strong winds, very low relative
  humidity, mild temperatures, and exceptionally dry fuels will
  likely promote extremely dangerous behavior of any fires. Any 
  fires that develop will likely spread rapidly. The threat is 
  greatest in rural areas where harvest activities are occurring. 
  Outdoor burning is not recommended.

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.

&&

$$

ILZ023-032-033-039-INZ001-002-010-011-019-171630-
/O.CON.KLOT.FW.W.0002.201017T1500Z-201018T0100Z/
Kankakee-Livingston-Iroquois-Ford-Lake IN-Porter-Newton-Jasper-
Benton-
316 AM CDT Sat Oct 17 2020 /416 AM EDT Sat Oct 17 2020/

...RED FLAG WARNING REMAINS IN EFFECT FROM 10 AM CDT /11 AM EDT/
THIS MORNING TO 8 PM CDT /9 PM EDT/ THIS EVENING FOR EAST CENTRAL
ILLINOIS AND NORTHWEST INDIANA...

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

* Winds...South 25 to 35 mph with gusts to 50 mph.

* Timing...Late this morning through early this evening.

* Relative Humidity...20 to 25 percent.

* Impacts...The combination of strong winds, very low relative
  humidity, mild temperatures, and exceptionally dry fuels will
  likely promote extremely dangerous behavior of any fires. Any
  fires that develop will likely spread rapidly. The threat is
  greatest in rural areas where harvest activities are occurring.
  Outdoor burning is not recommended.

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.

&&

$$

048 
WWUS83 KLOT 171541
RFWLOT

URGENT - FIRE WEATHER MESSAGE
National Weather Service Chicago IL
1041 AM CDT Sat Oct 17 2020

...HIGH FIRE DANGER TODAY...

ILZ010>014-019>023-032-033-039-INZ001-002-010-011-019-172345-
/O.CON.KLOT.FW.W.0002.000000T0000Z-201018T0100Z/
Lee-De Kalb-Kane-DuPage-Cook-La Salle-Kendall-Grundy-Will-
Kankakee-Livingston-Iroquois-Ford-Lake IN-Porter-Newton-Jasper-
Benton-
1041 AM CDT Sat Oct 17 2020 /1141 AM EDT Sat Oct 17 2020/

...RED FLAG WARNING REMAINS IN EFFECT UNTIL 8 PM CDT /9 PM EDT/
THIS EVENING...

* Affected Area...Lee, De Kalb, Kane, DuPage, Cook, La Salle,
  Kendall, Grundy, Will, Kankakee, Livingston, Iroquois, Ford,
  Lake IN, Porter, Newton, Jasper and Benton.

* Winds...South 25 to 35 mph with gusts to 50 mph.

* Timing...through early this evening.

* Relative Humidity...20 to 25 percent south of I-80 and around 25
  percent north of I-80.

* Impacts...The combination of strong winds, very low relative 
  humidity, mild temperatures, and exceptionally dry fuels will 
  likely promote extremely dangerous behavior of any fires. Any 
  fires that develop will likely spread rapidly. The threat is 
  greatest in rural areas where harvest activities are 
  occurring. Outdoor burning is not recommended.

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.

&&

$$

287 
WWUS83 KLOT 172026
RFWLOT

URGENT - FIRE WEATHER MESSAGE
National Weather Service Chicago IL
326 PM CDT Sat Oct 17 2020

...HIGH FIRE DANGER TODAY...

ILZ010>014-019>023-032-033-039-INZ001-002-010-011-019-180100-
/O.CON.KLOT.FW.W.0002.000000T0000Z-201018T0100Z/
Lee-De Kalb-Kane-DuPage-Cook-La Salle-Kendall-Grundy-Will-
Kankakee-Livingston-Iroquois-Ford-Lake IN-Porter-Newton-Jasper-
Benton-
326 PM CDT Sat Oct 17 2020 /426 PM EDT Sat Oct 17 2020/

...RED FLAG WARNING REMAINS IN EFFECT UNTIL 8 PM CDT /9 PM EDT/
THIS EVENING...

* Affected Area...Lake IN, Porter, Lee, Newton, De Kalb, Jasper, 
  Kane, DuPage, Cook, La Salle, Benton, Kendall, Grundy, Will, 
  Kankakee, Livingston, Iroquois and Ford.

* Winds...South 25 to 35 mph with gusts to 50 mph.

* Timing...through early this evening.

* Relative Humidity...20 to 25 percent south of I-80 and around 
  25 percent north of I-80.

* Impacts...The combination of strong winds, very low relative 
  humidity, mild temperatures, and exceptionally dry fuels will 
  likely promote extremely dangerous behavior of any fires. Any 
  fires that develop will likely spread rapidly. The threat is 
  greatest in rural areas where harvest activities are 
  occurring. Outdoor burning is not recommended.

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.

&&

$$

101 
WWUS83 KLOT 180057
RFWLOT

URGENT - FIRE WEATHER MESSAGE
National Weather Service Chicago IL
757 PM CDT Sat Oct 17 2020

ILZ010>014-019>023-032-033-039-INZ001-002-010-011-019-180200-
/O.EXP.KLOT.FW.W.0002.000000T0000Z-201018T0100Z/
Lee-De Kalb-Kane-DuPage-Cook-La Salle-Kendall-Grundy-Will-
Kankakee-Livingston-Iroquois-Ford-Lake IN-Porter-Newton-Jasper-
Benton-
757 PM CDT Sat Oct 17 2020 /857 PM EDT Sat Oct 17 2020/

...RED FLAG WARNING WILL EXPIRE AT 8 PM CDT /9 PM EDT/ THIS
EVENING...

Winds are decreasing and relative humidities are increasing, so
the Red Flag Warning will be allowed to expire.

$$

BKL

Area Forecast Discussion
National Weather Service Chicago/Romeoville, IL
240 PM CDT Fri Oct 16 2020

.UPDATE...
1057 AM CDT

Main tweak to the forecast was with short-term PoPs for lead
shortwave bringing a batch of light rain/light showers to areas
along and north of I-80 through the early afternoon. Behind this
wave, the next shortwave is producing rain and snow showers well
to the northwest over the greater MSP area. While steep lapse
rates will develop this afternoon behind the lead wave as skies
temporarily clear out, the best forcing will be poorly timed for
the time of year and pass north of the Wisconsin state line.
Therefore, thinking is that most of the afternoon will be dry,
with maybe a few isolated showers clipping the Wisconsin border
region toward and 1-2 hours after sunset. Trended PoPs to fit this
scenario.

Regarding fire weather concerns, still have the highest concern
along and south of I-80, especially if dew points mix out more
than currently forecast. We're starting to see the gusty winds
develop, but unless RH values end up lower, they should be just
above the critical threshold of 25%, so left the SPS in effect as
is. Looking ahead to Saturday, expect that we'll be needing a Wind
Advisory, as available 12z guidance continues to support forecast
of 45+ mph southerly wind gusts. Cloud cover trends will be
assessed as to full mixing potential and warming/drying of the air
mass. Fire Weather Watch was left unchanged, but as alldued to in
Fire Wx discussion below, we may need to consider expanding it
northward with the afternoon update.

Castro

&&

.SHORT TERM...
320 AM CDT

Through Saturday...

An active pattern continues and when saying "active, especially
in autumn, this does not always mean precipitation. In general
that's the case for the next two days, though there will be
spotty showers today. The crux of the weather impacts will be
wind-related, especially on Saturday with gusts likely to 45 mph
(Wind Advisory criteria) for a decent part of the area. The windy
pattern combined with the dryness both in air and in vegetation
will support an elevated fire danger today and a significant one
on Saturday. A Fire Weather Watch has been issued for Saturday for
a large part of the area south of I-80 for Saturday. See the Fire
Weather Discussion for more.

To start off for today, hemispheric satellite water vapor imagery
depicts the long wave trough from central Canada southward into
the mid-Mississippi Valley region, and this is filled with various
short wave impulses. One of these is upstream from our area from
southern Minnesota into central Iowa. This will move across the
area by late morning into early afternoon. Steep lapse rates,
sampled at 8.5 C/km 500-850mb on the 00Z OAX sounding, are
supporting spotty showers (some likely virga) on upstream regional
radar early this morning. Expecting that we will see similar
drift over the CWA along/north of I-80, with the dry sub-cloud
base layer (PWATS <0.25 in) helping to keep true showers fairly
spotty. Looking at forecast profiles with low freezing levels
below 4,500 ft and 50-100 J/kg within the high-based cloud depths
(-10 to -20C layer), there could be some brief graupel or small
hail. Going into the afternoon, a subsequent short wave moving
over Wisconsin as well as the residual elevated steeper lapse
rates being tapped into by boundary layer mixing will keep some
isolated shower potential continuing, again mainly north.

Otherwise for today, the pressure gradient itself will not be
that strong (about 4 mb over the CWA), but it will be migrating
allowing for an isallobaric component to assist in sustained
southwest wind speeds being 15-20 mph. The dry boundary layer will
yield deep vertical mixing, eased some by clouds at times, but
enough for peak gusts to remain forecast around 30 mph. With highs
in the mid 50s and dew points likely in the 20s, this results in
relative humidity values down to 25 to 35 percent south of I-80.
This is the area that has potential to see possibly longer periods
of sun today (and thus outperform in temperature and lower
humidity). Will highlight this elevated fire danger within a
Special Weather Statement and note in Situation Report too.

This evening confidence is fairly high in a clear period for a few
hours with weak ridging advancing overhead as the progressive
pattern carries on. With the dry air mass, a hearty temperature
drop is favored if this can line up, and outlying places should
reach the mid 30s and lower 30s are certainly possible. A Frost
Advisory may be needed and am mentioning frost in the forecast,
but at this time no headline with the current Freeze Warning and
confidence level on clearing. This all signifies the growing
season is coming to an end very soon.

Warm advection aloft and associated isentropic ascent will really
kick in late tonight into Saturday morning across northern
Illinois into southern Wisconsin. Mid-level cloud should prevail
along with potentially some light precipitation. Have added a
slight chance of a shower north for this.

Then attention turns to winds Saturday. The pattern shows
several key resemblances to this past Wednesday, including that
mid-cloud should be present in the morning and may stick around
all day even in the north. Much like Wednesday, we think that
this morning cloud cover will be overcome by 1.) strong pressure
gradient induced winds, 2.) warming into the 60s aiding in deep
mixing of the boundary layer, and 3.) a strong 45+ mph low-level
jet at 1,000-2,000 ft to be tapped into by this mixing for strong
gusts. Have forecast gusts similar to previous shift, peaking
around 45 mph and if this continues we are likely headed for a
Wind Advisory. If sun is more prevalent than forecast, higher
gusts are probable. For humidity values with the favorable mixing,
humidity around 25 percent for much of the area south of I-80.
Given the conditions forecast, namely such strong winds, a Fire
Weather Watch has been issued for Saturday for these southern
locations. See the Fire Weather Discussion below for more. Also of
note is that there could be some blowing dust on Saturday given
the strength of the winds and dry conditions, as well as the
ongoing harvest.

MTF

&&

.LONG TERM...
239 PM CDT

Early Sunday through Friday...

Active autumn weather pattern to persist through the coming week.
Broad troughing looks to affect much of the northern CONUS
through the period, with a generally west-east baroclinic zone
nearby much of the time. This will tend to keep low-end light
precip chances around through much of the extended, with a few
periodic higher amplitude short wave disturbances warranting
somewhat better pops, especially Sunday, late Tuesday and again
Thursday/Thursday night. Temps look to remain seasonable, with no
big extremes until just beyond this forecast period as colder air
of greater magnitude intrudes next weekend.

Surface low pressure will be tracking northeast away from the region
late Saturday night, with a trailing cold front working southeast
into the forecast area. While the better low-mid level moisture
field will be along and east of this front, a secondary short wave
will combine with the elevated baroclinic zone behind the front late
Saturday night to force post-frontal precipitation across the cwa.
This precip will likely persist through much of the day Sunday as
the front slowly shifts southeast. Guidance maintains some light
precip into Sunday evening across the southeastern parts of the cwa,
before the mid-level wave clears the area overnight. NAM soundings
try to suggest some wet snow may mix in across parts of north
central IL Sunday morning, though low level thermal fields and
surface wet bulb temps above freezing argue against anything other
than rain. Modest mid-level height rises develop in the wake of the
departing short wave Sunday night, with surface high pressure
developing across the upper Mississippi Valley. Despite lingering
clouds or only partial clearing, surface temps should dip into the
lower 30s by early Monday across much of northern IL.

As indicated above, broad upper troughing looks to linger across
much of the CONUS through next week, with the baroclinic zone
associated with Sunday's frontal zone not far from the forecast
area. This baroclinic zone is expected to waffle back and forth
across the area through the week, keeping periodic low-chance
potential for light precip in the forecast. A couple of additional
higher amplitude waves are depicted in the medium-range guidance,
one which would affect the area later Tuesday/Tuesday night and
another later Thursday/Thursday night, though some model timing
differences do remain. Thus NBM blended guidance continues to be
somewhat generous with periods of low/slight chance pops through the
period. Have not made significant changes to these given model
timing details that need to be worked out, but would anticipate
later forecasts being able to narrow the focus (including raising
pops for these more amplified systems...especially for Thursday)
more as these details are worked out over the next several days.

Both the ECMWF and GFS runs depict sprawling surface high pressure
develops across the northern/central Plains Friday, which would
suggest dry and colder weather at/just beyond the end of the current
extended period into next weekend.

Ratzer

&&

.FIRE WEATHER...

416 AM...A fire weather watch has been issued for Saturday for
the southern third of the cwa...including all of northwest IN.

Southwest winds will gust as high as 30 mph across much of the
area today as they slowly turn more westerly this afternoon.
Winds will quickly diminish with sunset this evening. Minimum
relative humidity levels will dip into the mid 20 percent range
across areas south of a Pontiac/Kankakee/valparaiso line. North of
this area likely in the 30 percent range...were some showers will
also be possible. Ten hour fuel moisture is likely to also drop
close to 8 percent this afternoon so red flag conditions will be
close in the south but confidence is low and trends will need to
be monitored.

Red flag conditions look more likely for Saturday...especially
across the southern cwa and have issued a fire weather watch for
this area. Winds will likely be gusting close to wind advisory
criteria on Saturday...45 mph...and relative humidity levels are
expected to drop into the lower/mid 20 percent range across the
watch area. Its possible that red flag criteria may be met further
north with any showers that occur today not having enough rainfall
or duration to affect fuel moisture. Ten hour fuel moisture will
likely be even lower on Saturday. Strong winds/gusts will continue
into Saturday evening with only a slow increase in relative
humidity levels. cms

&&

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

Aviation forecast concerns:

* Breezy west-southwest winds this afternoon with gusts around 25
  kt at times.

* Isolated showers developing later this afternoon, mainly
  along/north of IL/WI border. Expected coverage low enough to
  exclude from TAFs.

* Very strong south winds Saturday, with gusts 40+ kts during the
  afternoon.

Small mid-level disturbance was moving across the forecast area
here at midday, with denser VFR ceilings and a few sprinkles which
should transition east of the terminals shortly. A second wave
crossing the upper Mississippi Valley will track mainly north of
the terminals later this afternoon, with isolated to scattered
showers expected mainly north of the area. While an isolated
shower or sprinkle can't be completely ruled out this afternoon
the probability is low enough to leave out of the TAFs at this
time. Late morning/midday clouds have keep wind gusts rather
sporadic, though more sun this afternoon should still support
breezy west-southwest winds with gusts into the mid-20 kt range
before diminishing toward sunset.

Winds decouple this evening, then back south or even slightly
south-southeast overnight ahead of the next disturbance and cold
front which arrive Saturday. Mid-level VFR ceilings develop after
midnight as warm advection develops aloft in advance of this
system. Showers are expected to develop again mainly north of the
IL/WI border toward sunrise, and again while a few showers may
occur over far northern IL, the greatest coverage is expected to
remain north of the terminals.

With deep surface low pressure tracking across the upper
Mississippi Valley through the day, south winds are expected to
ramp up quickly Saturday morning, despite the thick mid-level
cloud cover. By afternoon, sustained speeds in the 25 kt range and
gusts of 40-45 kt are likely, especially as some thinning or
scattering of the mid-level cloud deck occurs. Wind direction of
190-200 degrees through the afternoon may pose cross-wind issues
for ORD approaches. Winds will remain gusty into the evening, but
peak gusts should subside fairly quickly late in the day with the
approach of sunset and the main low level jet axis shifting off to
the east of the area.

Ratzer

&&

.MARINE...

416 AM...A windy period is expected across southern Lake Michigan
through Saturday night. Southwest winds will increase to 30 kt
today and continue through sunset with winds/gusts diminishing
through the evening. A narrow and fast moving ridge of high
pressure will move across the area late this evening shifting
winds southerly early Saturday morning. As low pressure moves
across the upper Midwest Saturday...the gradient will tighten and
southerly gales are likely. Have upgraded the current gale watch
to a gale warning for the IL and IN nearshore waters. Winds turn
more southwest Saturday evening with speeds slowly diminishing
through the evening. A cold front will move across the area Sunday
morning shifting winds to the northwest. cms

&&

.LOT WATCHES/WARNINGS/ADVISORIES...
IL...Fire Weather Watch...ILZ023-ILZ032-ILZ033-ILZ039...10 AM
     Saturday to 8 PM Saturday.

     Wind Advisory...ILZ003-ILZ004-ILZ005-ILZ006-ILZ008-ILZ010-ILZ011-
     ILZ012-ILZ013-ILZ019-ILZ020-ILZ021-ILZ023-ILZ032-ILZ033-
     ILZ039-ILZ103-ILZ104-ILZ105-ILZ106-ILZ107-ILZ108...11 AM
     Saturday to 7 PM Saturday.

IN...Fire Weather Watch...INZ001-INZ002-INZ010-INZ011-INZ019...10 AM
     Saturday to 8 PM Saturday.

     Wind Advisory...INZ001-INZ002-INZ010-INZ011-INZ019...11 AM
     Saturday to 7 PM Saturday.

LM...Gale Warning...LMZ740-LMZ741-LMZ742-LMZ743-LMZ744-LMZ745...10 AM
     Saturday to 1 AM Sunday.

     Small Craft Advisory...IL nearshore waters until 7 PM Friday.

     Small Craft Advisory...IN nearshore waters until 9 PM Friday.

&&

Visit us at weather.gov/chicago

Follow us on Facebook, Twitter, and YouTube at:
www.facebook.com/NWSChicago
www.twitter.com/NWSChicago
www.youtube.com/NWSChicago

Hazardous Weather Outlook
National Weather Service Chicago/Romeoville IL
405 AM CDT Fri Oct 16 2020

ILZ003>006-008-010>013-019>021-023-032-033-039-103>108-INZ001-002-
010-011-019-170915-
Winnebago-Boone-McHenry-Lake IL-Ogle-Lee-De Kalb-Kane-DuPage-
La Salle-Kendall-Grundy-Kankakee-Livingston-Iroquois-Ford-
Northern Cook-Central Cook-Southern Cook-Northern Will-
Southern Will-Eastern Will-Lake IN-Porter-Newton-Jasper-Benton-
405 AM CDT Fri Oct 16 2020 /505 AM EDT Fri Oct 16 2020/

This Hazardous Weather Outlook is for portions of North Central
Illinois...Northeast Illinois and Northwest Indiana.

.DAY ONE...Today and Tonight.

Weather hazards expected...

  Elevated Fire Weather Risk.
  Limited Non Thunderstorm Wind Risk.
  Significant Frost Risk tonight.

DISCUSSION...

Wind gusts to 30 to 35 mph and dry conditions will be seen
primarily south of Interstate 80 this afternoon, resulting in
an elevated fire weather risk.

.DAYS TWO THROUGH SEVEN...Saturday through Thursday.

Saturday...
  Elevated Non Thunderstorm Wind Risk.
  Significant Fire Weather Risk.
Thursday...
  Limited Thunderstorm Risk.

DISCUSSION:

Saturday will have strong southerly winds with peak gusts up to
45 to possibly 50 mph. These gusts will be enough to blow loose
objects and potentially make driving hazardous for high profile
vehicles. In addition, with the dry conditions in place, Saturday
will be favorable for a rapid spread of brushfires or wildfires.

.SPOTTER INFORMATION STATEMENT...

  Spotter activation will not be necessary through tonight.

LMZ740>745-170915-
Winthrop Harbor to Wilmette Harbor IL-
Wilmette Harbor to Northerly Island IL-
Northerly Island to Calumet Harbor IL-
Calumet Harbor IL to Gary IN-Gary to Burns Harbor IN-
Burns Harbor to Michigan City IN-
405 AM CDT Fri Oct 16 2020

This Hazardous Weather Outlook is for portions of the Illinois
nearshore waters of Lake Michigan and the Indiana nearshore
waters of Lake Michigan.

.DAY ONE...Today and Tonight.

Weather hazards expected...

  Hazardous conditions for small craft.

.DAYS TWO THROUGH SEVEN...Saturday through Thursday.

Saturday...
  Gale force winds and or very hazardous waves are likely.

MTF

Visit us at http://weather.gov/chicago

Follow us on Facebook, Twitter, and Youtube at:
www.facebook.com/nwschicago
www.twitter.com/nwschicago
www.youtube.com/nwschicago