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Current Conditions

A message from COD Meteorology

Current Local Radar

Temperature
33°F
Feels Like:
28°F
Dew Point	Humidity
31°F	92%

Light Snow Fog/Mist

Wind Strength
Light	Moderate	Strong
South-southeast at 5 mph

Local Graphical Forecast (Updated: 01/23/20 1:18 pm)

Thursday (1/23)
Day	Night

70%	100%
High	Low
33	32

Friday (1/24)
Day	Night

90%	90%
High	Low
35	33

Saturday (1/25)
Day	Night

50%
High	Low
37	31

Sunday (1/26)
Day	Night


High	Low
37	26

Monday (1/27)
Day	Night


High	Low
36	28

Tuesday (1/28)
Day	Night


High	Low
39	31

Wednesday (1/29)
Day	Night

15%
High	Low
40

Detailed Text Forecast (Updated: 01/23/20 1:18 pm)

Thursday: Snow likely. Patchy fog after 3pm. Otherwise, cloudy, with a high near 33. Southeast wind around 10 mph. Chance of precipitation is 70%. Total daytime snow accumulation of less than one inch possible.

Thursday Night: Snow before 5am, then rain and snow. Patchy fog before 9pm. Low around 32. East wind 5 to 10 mph. Chance of precipitation is 100%. New snow accumulation of 1 to 2 inches possible.

Friday: Rain and snow. High near 35. East northeast wind 5 to 10 mph, with gusts as high as 15 mph. Chance of precipitation is 90%. New snow accumulation of less than a half inch possible.

Friday Night: Rain and snow, becoming all snow after 11pm. Low around 33. North northeast wind around 5 mph becoming west northwest after midnight. Chance of precipitation is 90%. New snow accumulation of 1 to 2 inches possible.

Saturday: A chance of snow before 10am, then a chance of rain and snow. Cloudy, with a high near 37. West northwest wind 5 to 15 mph. Chance of precipitation is 50%.

Saturday Night: Cloudy, with a low around 31.

Sunday: Mostly cloudy, with a high near 37.

Sunday Night: Mostly cloudy, with a low around 26.

Monday: Mostly cloudy, with a high near 36.

Monday Night: Mostly cloudy, with a low around 28.

Tuesday: Mostly cloudy, with a high near 39.

Tuesday Night: Mostly cloudy, with a low around 31.

Wednesday: A slight chance of rain and snow. Cloudy, with a high near 40.

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SPC Convective Outlook Day 1

See Product Description

519
ACUS01 KWNS 231950
SWODY1
SPC AC 231948

Day 1 Convective Outlook
NWS Storm Prediction Center Norman OK
0148 PM CST Thu Jan 23 2020

Valid 232000Z - 241200Z

...NO SEVERE THUNDERSTORM AREAS FORECAST...

...SUMMARY...
Severe thunderstorms are not forecast across the contiguous United
States through tonight.

...Discussion...
No appreciable change was made to the previous convective outlook.

..Smith.. 01/23/2020

.PREV DISCUSSION... /ISSUED 1028 AM CST Thu Jan 23 2020/

...Gulf Coast...
A longwave trough will continue to become increasingly prominent
with a slow-eastward shift over the east-central CONUS, with
multiple embedded shortwave troughs phasing and a deepening low over
the Lower Missouri Valley. These trends and related warm/moist
advection will influence gradual air mass modification over the
western/northern Gulf of Mexico while also contributing to scattered
rainfall inland from the ArkLaMiss/southeast Louisiana to Georgia
and the Florida Panhandle.

Weaker/secondary cyclogenesis will occur along the middle Gulf Coast
through tonight, with a warm front approaching the coasts of
southeast Louisiana, southern portions of Mississippi/Alabama, and
the Florida Panhandle. However, with scattered rainfall persisting
inland, it still seems likely that continental trajectories will be
slow to abate with stronger/surface-rooted convection likely to
remain over the open waters of the Gulf of Mexico through tonight.
Accordingly, severe potential over inland areas of the region is
still expected to remain very low.

$$

The "Convective Outlooks" issued by SPC can be thought of as a detailed discussion of the Severe Thunderstorm threat and it's associated risks nationwide. Risk levels range from Marginal to Slight, Enhanced, Moderate, and High and are issued based on the likelihood of 3 major severe weather threats; the risk of tornadoes, damaging winds, and hail. These discussions are often heavily laced meteorological terminology that may be difficult to understand without a background in the field. However understanding these discussions shouldn't be thought of as necessary. Instead, should DuPage county fall under one of these threat levels for severe weather, the response should be to have a heightened level of awareness about the deveoloping weather. Keep an eye on the "Watch County Notification" for any active severe weather watches issued for DuPage county; the "Hazardous Weather Outlook" and "Severe Weather Statement" can also be helpful in explaining the developing risk; additionally, watch for "Active Weather Warnings" and keep an eye on our "Regional Satellite and Radar" products which can be viewed with active watches/warnings or lightning activity.

Hazardous Weather Outlook

See Product Description

435
FLUS43 KLOT 231011
HWOLOT

Hazardous Weather Outlook
National Weather Service Chicago/Romeoville IL
411 AM CST Thu Jan 23 2020

ILZ003>006-008-010>014-019>023-032-033-039-INZ001-002-010-011-019-
241015-
Winnebago-Boone-McHenry-Lake IL-Ogle-Lee-De Kalb-Kane-DuPage-Cook-
La Salle-Kendall-Grundy-Will-Kankakee-Livingston-Iroquois-Ford-
Lake IN-Porter-Newton-Jasper-Benton-
411 AM CST Thu Jan 23 2020 /511 AM EST Thu Jan 23 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...

Limited Fog Risk.
Elevated Snow Risk.

DISCUSSION...

A slow moving storm system will bring a long duration of light to
occasionally moderate precipitation today through Saturday. Most
of the precipitation will be in the form of wet snow, but rain
will be possible at times, especially east of Interstate 57 where
warmer temperatures will be possible. Patchy fog is possible this
afternoon and tonight, especially across northern Illinois.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday.

Friday...
Limited Snow Risk.

DISCUSSION:

Light snow accumulations are expected in many areas for the
Friday morning commute, mainly along and northwest of the
Interstate 57 corridor. As the storm system slowly pulls east of
the area Friday evening, a period of moderate snow may produce a
few to several additional inches of snow accumulation for portions
of northern Illinois.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will not be necessary through tonight.

$$

LMZ740>745-241015-
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-
411 AM CST Thu Jan 23 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...

Limited Fog Risk.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday.

No hazardous weather is expected at this time.

$$

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The "Hazardous Weather Outlook" contains information regarding any and all weather expected to occur within the region that could be hazardous to travel, life or property. This is one of our most highly recommended products to check on a daily basis, and it some cases multiple times per day should significant weather be expected to affect DuPage county.

SPC Convective Outlook Day 2

See Product Description

770
ACUS02 KWNS 231722
SWODY2
SPC AC 231721

Day 2 Convective Outlook
NWS Storm Prediction Center Norman OK
1121 AM CST Thu Jan 23 2020

Valid 241200Z - 251200Z

...NO SEVERE THUNDERSTORM AREAS FORECAST...

...SUMMARY...
Showers and a few thunderstorms are expected across the southern and
middle Atlantic coastal states Friday.

...Synopsis...
A mid-level low will move from the Ozarks to the southern Great
Lakes during the day-2 period. An attendant frontal zone associated
with an eastward-moving mid-level low southeast of Bermuda, has
progressed into the central Caribbean. In wake of the front, a
relatively cool airmass south/east of the Southeast U.S. will only
have a short duration to partially modify before the approaching
mid-level trough from the west. As a result, instability will
likely be hindered in what would otherwise promote a more favorable
setup for stronger thunderstorm activity near the NC coast late
Friday night/early Saturday morning.

Nonetheless, strengthening forcing for ascent and at least scant to
weak elevated instability may result in a low-topped convective band
to develop over western NC and move into central VA and eastern NC
during the overnight. A plume of upper 50s F dewpoints is forecast
to overspread the NC coastal plain with cold 500 mb temperatures
(-18 C). Uncertainty is quite high regarding the magnitude of
destabilization given the antecedent airmass modification needed.

Will re-evaluate both observational and model run-to-run trends for
the possibility for including low-severe probabilities at later
outlook updates.

...MAXIMUM RISK BY HAZARD...
Tornado: <2% - None
Wind: <5% - None
Hail: <5% - None

..Smith.. 01/23/2020

$$

The "Convective Outlooks" issued by SPC can be thought of as a detailed discussion of the Severe Thunderstorm threat and it's associated risks nationwide. Risk levels range from Marginal to Slight, Enhanced, Moderate, and High and are issued based on the likelihood of 3 major severe weather threats; the risk of tornadoes, damaging winds, and hail. These discussions are often heavily laced meteorological terminology that may be difficult to understand without a background in the field. However understanding these discussions shouldn't be thought of as necessary. Instead, should DuPage county fall under one of these threat levels for severe weather, the response should be to have a heightened level of awareness about the deveoloping weather. Keep an eye on the "Watch County Notification" for any active severe weather watches issued for DuPage county; the "Hazardous Weather Outlook" and "Severe Weather Statement" can also be helpful in explaining the developing risk; additionally, watch for "Active Weather Warnings" and keep an eye on our "Regional Satellite and Radar" products which can be viewed with active watches/warnings or lightning activity.

SPC Convective Outlook Day 3

See Product Description

498
ACUS03 KWNS 230821
SWODY3
SPC AC 230820

Day 3 Convective Outlook
NWS Storm Prediction Center Norman OK
0220 AM CST Thu Jan 23 2020

Valid 251200Z - 261200Z

...NO SEVERE THUNDERSTORM AREAS FORECAST...

...SUMMARY...
Elevated thunderstorms will be possible over portions of the
southern Plains late Saturday/Sunday morning.

...Discussion...
A progressive pattern aloft will prevail across the U.S. during the
upcoming weekend, as a series of shorter-wavelength troughs cross
the western and central U.S., while a large upper low moves
gradually into the Northeast.

At the surface, a cool front will shift southward across south
Florida and the Keys, while a low moves onshore over the Northwest
in conjunction with an eastern Pacific short-wave trough. Over the
south-central U.S., weak low pressure -- and low-level warm
advection -- will spread across the region through the period,
associated with another short-wave feature aloft.

Aside from an early lightning flash or two near south Florida and
the Keys, and perhaps a couple of others over portions of the
Northwest U.S. Coast, the only area more likely to see at least 10%
lightning coverage appears to be over parts of the southern Plains.
Here, weak elevated theta-e advection and the aforementioned
increase in QG forcing may permit nocturnal, elevated convection to
develop over parts of Texas and possibly into Oklahoma. Severe
weather is not expected.

..Goss.. 01/23/2020

$$

The "Convective Outlooks" issued by SPC can be thought of as a detailed discussion of the Severe Thunderstorm threat and it's associated risks nationwide. Risk levels range from Marginal to Slight, Enhanced, Moderate, and High and are issued based on the likelihood of 3 major severe weather threats; the risk of tornadoes, damaging winds, and hail. These discussions are often heavily laced meteorological terminology that may be difficult to understand without a background in the field. However understanding these discussions shouldn't be thought of as necessary. Instead, should DuPage county fall under one of these threat levels for severe weather, the response should be to have a heightened level of awareness about the deveoloping weather. Keep an eye on the "Watch County Notification" for any active severe weather watches issued for DuPage county; the "Hazardous Weather Outlook" and "Severe Weather Statement" can also be helpful in explaining the developing risk; additionally, watch for "Active Weather Warnings" and keep an eye on our "Regional Satellite and Radar" products which can be viewed with active watches/warnings or lightning activity.