SPC Convective Outlook Day 1

See Product Description

627
ACUS01 KWNS 260052
SWODY1
SPC AC 260050

Day 1 Convective Outlook
NWS Storm Prediction Center Norman OK
0750 PM CDT Mon Mar 25 2019

Valid 260100Z - 261200Z

...THERE IS A MARGINAL RISK OF SEVERE THUNDERSTORMS FROM PORTIONS OF
GA TO SOUTHERN LA...

...SUMMARY...
A few strong to severe thunderstorms are expected to linger over
portions of Alabama and Georgia early this evening.

...AL/GA...

Mid-level short-wave trough is digging southeast across the TN
Valley/northern Gulf States. Loosely organized band of convection
has evolved ahead of this feature and currently extends from central
GA southwest into southern AL where thunderstorms are considerably
more isolated in nature. Over the last hour or so updraft intensity
has gradually weakened with these storms and further weakening is
expected as boundary layer continues to cool. Latest hail algorithm
suggests a few storms across southern AL are producing marginally
severe hail and there is some severe potential with this activity
for the next few hours. Even so, overall severe threat appears
mostly marginal and severe probs will be lowered accordingly.

..Darrow.. 03/26/2019

$$

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

400
FLUS43 KLOT 252031
HWOLOT

Hazardous Weather Outlook
National Weather Service Chicago/Romeoville IL
331 PM CDT Mon Mar 25 2019

ILZ003>006-008-010>014-019>023-032-033-039-INZ001-002-010-011-019-
262045-
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-
331 PM CDT Mon Mar 25 2019 /431 PM EDT Mon Mar 25 2019/

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

.DAY ONE...Tonight.

Flooding will continue along portions of the Rock, Pecatonica,
and Fox rivers.

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

Thursday...
Limited Flooding Risk.
Friday...
Limited Flooding Risk.
Limited Thunderstorm Risk.
Saturday...
Limited Flooding Risk.
Limited Thunderstorm Risk.
Limited Non Thunderstorm Wind Risk.

DISCUSSION:

A frontal boundary will stall over the region late in the week,
resulting in a couple bouts of moderate to heavy rainfall. There
is a chance for isolated thunderstorms as well. Significant
rainfall totals are possible, which could cause renewed river and
stream rises and lowland flooding.

Flooding will continue along portions of the Rock, Pecatonica,
and Fox rivers.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will not be necessary through tonight.

$$

LMZ740>745-262045-
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-
331 PM CDT Mon Mar 25 2019

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.

Weather hazards expected...

Hazardous conditions for small craft.

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

Friday...
Hazardous conditions for small craft are likely.
Limited Thunderstorm Risk.
Saturday...
Hazardous conditions for small craft are likely.
Gale force winds and or very hazardous waves are possible.
Limited Thunderstorm Risk.
Sunday...
Hazardous conditions for small craft are likely.

$$

Kluber

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

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

893
ACUS02 KWNS 251655
SWODY2
SPC AC 251654

Day 2 Convective Outlook
NWS Storm Prediction Center Norman OK
1154 AM CDT Mon Mar 25 2019

Valid 261200Z - 271200Z

...NO SEVERE THUNDERSTORM AREAS FORECAST...

...SUMMARY...
Thunderstorms will be possible across parts of the upper Rio Grande
Valley and southern Rockies on Tuesday. Isolated thunderstorms will
also be possible in eastern Florida.

...DISCUSSION...
An upper-level ridge will move eastward across the High Plains on
Tuesday. In the wake of the ridge, a corridor of maximized low-level
moisture will setup across New Mexico. As surface temperatures warm,
scattered thunderstorms will be possible in New Mexico and far
southern Colorado. A few thunderstorms will also be possible along
the eastern coast of Florida as an upper-level low approaches from
the northwest. Neither the activity in the southern Rockies or in
eastern Florida is expected to pose a severe threat Tuesday or
Tuesday night.

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

..Broyles.. 03/25/2019

$$

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

649
ACUS03 KWNS 250726
SWODY3
SPC AC 250725

Day 3 Convective Outlook
NWS Storm Prediction Center Norman OK
0225 AM CDT Mon Mar 25 2019

Valid 271200Z - 281200Z

...NO SEVERE THUNDERSTORM AREAS FORECAST...

...SUMMARY...
Thunderstorms are possible across portions of the Pacific Northwest
and northern California Wednesday. Isolated thunderstorms are also
possible across the southern High Plains and central Plains
Wednesday evening and overnight.

...Synopsis and Discussion...
Overall upper pattern is not expected to undergo any significant
changes on Wednesday. A compact shortwave trough extending from just
off the Carolina coast through the central FL Peninsula at the
beginning of the period will continue eastward farther offshore.
Farther west, strong southwesterly flow will persist from CA across
the Great Basin as upper low off the northern CA/Pacific Northwest
coast remains largely in place. Several low-amplitude shortwave
troughs will move within this southwesterly flow, providing the
impetus for thunderstorm development within the steep-lapse-rate
environment in place from central CA through western OR. Modest
instability is expected to limit overall updraft strength and
persistence. Even so, the strong vertical shear may compensate for
the weak instability and a few more-organized storms may develop.
These storms may be able to produce small hail. Limited coverage and
anticipated sub-severe hail size preclude delineated any outlook
areas.

Lee troughing will continue to deepen across the central and
southern High Plains, with eventual cyclogenesis across eastern CO.
Large-scale ascent will be weak but convergence along the lee trough
and near the surface low may provide enough lift for isolated
thunderstorms during the afternoon and evening. Primary forecast
uncertainty is the extent of air mass destabilization. Modest
moisture advection will be ongoing, but mixing will likely keep
dewpoints in the low 50s. Steep lapse rates over the region would
promote hail within any persistent updrafts. Isolated thunderstorms
are also possible later in the evening and overnight as warm-air
advection strengthens. Uncertainty remains too high to delineate any
areas with this outlook but areas may be needed in subsequent
outlooks, if confidence in sufficient storm coverage increases.

..Mosier.. 03/25/2019

$$

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

See Product Description

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

See Product Description

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.

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.