SPC Convective Outlook Day 1

See Product Description

495
ACUS01 KWNS 071302
SWODY1
SPC AC 071300

Day 1 Convective Outlook
NWS Storm Prediction Center Norman OK
0700 AM CST Sat Mar 07 2026

Valid 071300Z - 081200Z

...THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS ACROSS PARTS OF
TEXAS INTO THE LOWER MISSISSIPPI VALLEY/MID-SOUTH...AND PORTIONS OF
THE OHIO VALLEY INTO WESTERN PENNSYLVANIA/NEW YORK...

...SUMMARY...
Scattered severe thunderstorms are likely today across parts of Ohio
into West Virginia and western Pennsylvania/New York, and from
portions of Texas into the lower Mississippi Valley and Mid-South.
Damaging winds should be the main threat for most areas, but large
hail may occur across parts of Texas, and a few tornadoes appear
possible in the upper Ohio Valley.

...Ohio Valley into Western Pennsylvania/New York...
A large-scale upper trough will continue to advance eastward today
across the Midwest, Great Lakes, and OH Valley though the period.
The primary surface low is forecast to develop northeastward into
Ontario and Quebec through the day, while a trailing cold front
moves quickly east-southeastward across the OH Valley and eventually
PA/NY. Recent visible satellite imagery shows some clearing across
central/eastern OH, and strong low-level warm moist advection
associated with a 40-50+ kt low-level jet will aid in a gradual
increase in low-level moisture ahead of ongoing convection across
KY/southern IL into IN. While MLCAPE should only peak around
500-1000 J/kg ahead of the front by early afternoon, strong flow at
low/mid-levels will aid thunderstorm clusters in producing scattered
severe/damaging winds as they move quickly eastward across the upper
OH Valley later today. The potential for a few line-embedded and/or
supercell tornadoes is also apparent given sufficient low-level
shear. This convection is forecast to weaken this evening as it
moves into the higher terrain of the Appalachians and encounters a
much less unstable airmass.

...Texas into the Lower Mississippi Valley/Mid-South...
Extensive convection is ongoing this morning along/near a
southeastward-moving cold front. Isolated damaging winds will remain
possible this morning where short line segments/bows can stay ahead
of the surging front. Current expectations are for an uptick in
thunderstorm intensity to occur this afternoon as activity spreads
southeastward into a gradually destabilizing airmass across the
lower MS Valley/Mid-South. Scattered damaging winds along
consolidating outflows should be the main threat for most areas this
afternoon through early evening as low-level lapse rates steepen.
But, some potential for supercells remains apparent across parts of
TX, where steep mid-level lapse rates, greater MUCAPE, and modestly
enhanced mid/upper-level flow and related deep-layer shear will
support the potential for large hail. Even with the primary upper
trough remaining to the north, some enhancement to the low-level
winds persists, which may support a brief tornado threat in the
short term. See Mesoscale Discussion 164 for more details on the
near-term severe threat across AR and vicinity.

..Gleason/Dean.. 03/07/2026

$$

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

972
FLUS43 KLOT 071337 AAA
HWOLOT

Hazardous Weather Outlook...UPDATED
National Weather Service Chicago/Romeoville IL
737 AM CST Sat Mar 7 2026

ILZ003>006-008-010>013-019>021-023-032-033-039-103>108-INZ001-002-
010-011-019-081345-
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-
737 AM CST Sat Mar 7 2026 /837 AM EST Sat Mar 7 2026/

This Hazardous Weather Outlook is for portions of north central
Illinois...northeast Illinois and northwest Indiana.

.DAY ONE...Today and Tonight.

No hazardous weather is expected at this time.

.DAYS TWO THROUGH SEVEN...Sunday through Friday.

Tuesday...
Limited Flooding Risk.
Limited Thunderstorm Risk.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will not be necessary through tonight.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will not be necessary through tonight.

$$

LMZ740>745-081345-
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-
737 AM CST Sat Mar 7 2026

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...Sunday through Friday.

Sunday...
Hazardous conditions for small craft are likely.
Tuesday...
Hazardous conditions for small craft are likely.
Limited Thunderstorm Risk.
Wednesday...
Hazardous conditions for small craft are likely.
Thursday and Friday...
Gale force winds and very hazardous waves.

$$

- Izzi

Visit us at www.weather.gov/chicago

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

585
ACUS02 KWNS 070606
SWODY2
SPC AC 070604

Day 2 Convective Outlook
NWS Storm Prediction Center Norman OK
1204 AM CST Sat Mar 07 2026

Valid 081200Z - 091200Z

...THERE IS A MARGINAL RISK OF SEVERE THUNDERSTORMS ACROSS PORTIONS
OF THE CAROLINAS INTO SOUTHEAST VIRGINIA...

...SUMMARY...
Isolated, marginally severe thunderstorms are possible on Sunday
afternoon to early evening across parts of the Carolinas to
southeast Virginia.

...Carolinas into southeast VA...

An upper shortwave trough will quickly move from the Great Lakes and
across the Northeast by Sunday evening. Another weaker shortwave
impulse will move across the TN Valley during the afternoon before
emerging over VA/NC by early Monday. A belt of enhanced
southwesterly deep-layer flow will overspread the northern extent of
a warm sector across southeast VA into NC/SC. Modest surface
troughing is forecast across the Piedmont, but low-level convergence
is expected to remain weak. A surface front will not move much
through afternoon, but with time will begin to develop
south/southeast across the region during the evening.

Modest midlevel lapse rates and surface dewpoint in the 60s will
foster weak destabilization. Isolated thunderstorm development is
expected during the afternoon into evening ahead of the surface
boundary. While low-level flow will remain weak, southwesterly flow
aloft will increase rapidly, leading to around 25-30 kt effective
shear magnitudes (somewhat higher across southeast VA/far northeast
NC). A couple of organized cells could develop and pose a risk for
locally strong gusts and marginally severe hail.

..Leitman.. 03/07/2026

$$

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

959
ACUS03 KWNS 070720
SWODY3
SPC AC 070719

Day 3 Convective Outlook
NWS Storm Prediction Center Norman OK
0119 AM CST Sat Mar 07 2026

Valid 091200Z - 101200Z

...THERE IS A MARGINAL RISK OF SEVERE THUNDERSTORMS FROM NORTHEAST
TEXAS INTO MISSISSIPPI...

...SUMMARY...
Isolated strong to severe thunderstorms are possible on Monday from
northeast Texas into Mississippi.

...ArkLaTex to Mississippi...

An upper low over northwest Mexico will begin to migrate east toward
the southern Rockies/northern Mexico on Monday. Ahead of this
feature, a subtle upper shortwave impulse will move from the
southern Plains to the Southeast. This will allow enhanced
west/southwesterly flow to overspread a moistening boundary layer
across the Lower MS Valley into the Mid-South and TN Valley.
Large-scale ascent will remain subtle. However, forecast guidance
suggests sufficiently steep lapse rates will be present to support
at least modest destabilization. Favorable deep shear also should
support organized updrafts if enough destabilization occurs within
the warm advection regime. Given modest forcing mechanisms, storm
coverage is uncertain. However, the overall environment should be at
least conditionally favorable for a few strong to severe storms
through Monday afternoon/evening across portions of the ArkLaTex
into MS.

..Leitman.. 03/07/2026

$$

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.