SPC Convective Outlook Day 1

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883
ACUS01 KWNS 290039
SWODY1
SPC AC 290037

Day 1 Convective Outlook
NWS Storm Prediction Center Norman OK
0637 PM CST Fri Jan 28 2022

Valid 290100Z - 291200Z

...NO THUNDERSTORM AREAS FORECAST...

...SUMMARY...
Thunderstorms are not forecast across the U.S. through tonight.

...Synopsis...
A mid-level trough over the OH Valley/Southeast will move to the
eastern states by daybreak Saturday as a coupled upper-level jet
structure evolves over the western Atlantic. In the low levels, a
surface low undergoing bombogenesis will move from well east of the
Carolinas north-northeastward and well offshore the NJ coast by
Saturday morning. Aside from precipitation associated with the
Nor'easter, cool/stable conditions will prevail over much of the
remainder of the Lower 48.

..Smith.. 01/29/2022

$$

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

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899
FLUS43 KLOT 282155
HWOLOT

Hazardous Weather Outlook
National Weather Service Chicago/Romeoville IL
355 PM CST Fri Jan 28 2022

ILZ003>006-008-010>013-019>021-023-032-033-039-103>108-INZ001-002-
010-011-019-292200-
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-
355 PM CST Fri Jan 28 2022 /455 PM EST Fri Jan 28 2022/

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

.DAY ONE...Tonight.

Weather hazards expected...

Elevated Snow Risk early for parts of northwest Indiana.

DISCUSSION...

Lake effect snow will continue south and east of downtown Chicago,
primarily across northern Lake and Porter Counties through the
early to mid evening. This will cause some travel impacts.

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

Saturday Morning...
Limited Excessive Cold Risk.
Tuesday Night...
Limited Snow Risk.
Wednesday...
Elevated Snow Risk.
Limited Ice Accumulation Risk near and south of US-24.
Limited Excessive Cold Risk.
Thursday...
Elevated Snow Risk.
Elevated Excessive Cold Risk at night.

DISCUSSION:

A long duration of wintry precipitation or multiple waves of
wintry precipitation late Tuesday night through Thursday is
forecast. The potential exists for a significant plowable
snowfall for at least portions of the region along with
associated travel impacts.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will not be necessary through tonight.

$$

LMZ740>745-292200-
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-
355 PM CST Fri Jan 28 2022

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...Tonight.

No hazardous weather is expected at this time.

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

Wednesday and Thursday...
Hazardous conditions for small craft are likely.
Freezing Spray Risk, especially Thursday night.

$$

Castro

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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

312
ACUS02 KWNS 281709
SWODY2
SPC AC 281707

Day 2 Convective Outlook
NWS Storm Prediction Center Norman OK
1107 AM CST Fri Jan 28 2022

Valid 291200Z - 301200Z

...NO THUNDERSTORM AREAS FORECAST...

...SUMMARY...
Thunderstorms are not expected on Saturday.

...Synopsis...
An amplifying upper-level trough will move up the Eastern Seaboard
on Saturday with a very strong surface low Saturday morning
continuing to deepen through the day. This Nor'easter will bring
very heavy snowfall and strong winds to portions of the Northeast.
Forecast soundings indicate some weak elevated instability near Cape
Cod with maximum temperatures around -3 to -4C. This may be
sufficient for some supercooled water/graupel and thus enough charge
separation for some lightning flashes. However, this marginal
thermal profile for phase diversity, and only weak instability
brings some doubt to the amount of lightning flashes that will be
seen. Therefore, no general thunderstorm delineation has been added
at this time.

Elsewhere in the CONUS a cool/dry continental airmass will be in
place and mitigate any threat for thunderstorms.

..Bentley.. 01/28/2022

$$

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

456
ACUS03 KWNS 280746
SWODY3
SPC AC 280745

Day 3 Convective Outlook
NWS Storm Prediction Center Norman OK
0145 AM CST Fri Jan 28 2022

Valid 301200Z - 311200Z

...NO THUNDERSTORM AREAS FORECAST...

...SUMMARY...
Thunderstorms are not expected on Sunday.

...Synopsis...

An upper low and attendant trough over the lower CO Valley Sunday
morning will shift east across the southern Rockies, emerging over
TX/the southern Plains by Monday morning. In response, a surface
trough will develop over the central/southern High Plains and
southerly low-level flow will modestly increase. Prior cold frontal
intrusions, deep into the Gulf of Mexico/Caribbean vicinity, will
limit boundary-layer moisture return. 50s to near 60 F surface
dewpoints will mainly be confined to the lower/middle TX coast late
in the forecast period. As such, thunderstorms are not expected at
this time.

Elsewhere, several upper shortwave troughs will migrate through
larger-scale northwesterly flow from the northern Rockies toward the
Atlantic coast. Dry and stable conditions with surface high pressure
centered over the Midwest will preclude thunderstorm activity.

..Leitman.. 01/28/2022

$$

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.

Special Weather Statement

See Product Description

No active Special Weather Statement for DuPage County.

The "Special Weather Statement" details notable weather either occuring or expected to occur, but does not necessarily have to be considered severe or hazardous. This is a supplementary product issued by the National Weather Service to help describe noteworthy weather. It's terminology should be reasonably easy to understand by the general public.

Watch County Notification

See Product Description

No active Watch County Notification for DuPage County.

The "Watch County Notification" will contain updates regarding active severe weather watches that pertain to DuPage county. This may be for a newly issued watch, or the cancelation of an existing watch. Severe weather watches come in two forms; Severe Thunderstorm and Tornado, and it should be noted that a Severe Thunderstorm Watch does NOT rule out the possibility of tornadoes occuring. It generally means that the tornado threat is minimal while damaging winds and hail are still likely. See our "Watch, Warning, and Advisory Criteria" for more detailed information on the differences and critera for watches, warnings and advisory for all forms of weather.

Winter Weather Statement

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No active Winter Weather Statement for DuPage County.

The "Winter Weather Statement" is a product aimed at the general public that will discuss impacts caused by winter weather. This may include information about watches, warnings and advisories as well as details about impactful winter weather that may not warrant the issuance of a watch, warning or advisory.

Severe Weather Statement

See Product Description

No active Severe Weather Statement for DuPage County.

The "Severe Weather Statement" is a product aimed at the general public that will discuss impacts caused by severe thunderstorms. This may include information about watches and warnings as well as details about impactful "sub-severe" weather that may not warrant the issuance of a watch or warning which sometimes may come when a watch or warning has been canceled.

Non-Precip Statement

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No active Non-Precip Statement for DuPage County.

The "Non-Precip Statement" is aimed at the general public and will detail notable weather that is either occuring or expected to occur, but does not relate to any form of precipitation. These would include but are not limited to high winds, reduced visibility or extreme temperatures.

Active Weather Warnings

Tornado Warnings

No active Tornado Warnings.

Severe Thunderstorm Warnings

No active Severe Thunderstorm Warnings.

Flood Warnings

No active Flood Warnings.

Winter Weather Warnings

No active Winter Weather Warnings.

General Tornado/Severe Weather Safety

1. A Tornado or Severe Thunderstorm Warning is issued when it has been reported, or when it has been detected via National Weather Service radar. It is to be interpreted that this event is occuring and is expected to affect all warned areas. Those within the warning need to take action immediately.
2. If under a warning remain calm and if it is necessary to seek shelter. Students and Employees should head to their nearest designated shelter area. The route to these shelter areas are posted in all rooms on campus and signs are placed in the hallways to direct you to the nearest shelter area. Review these instructions and be familiar with where your nearest shelter is. Stay indoors, away from windows and large unsupported ceilings. Faculty should account for their students and Supervisors should account for their areas employees.
3. If outside, take shelter in the nearest building.
4. After the storm has passed, dial Police at 911 to report any injuries or damage to buildings.
5. If the building is severely damaged, evacuate the building as soon as possible after the storm has passed.