Essentials:

Regional Satellite and Radar...

-with Watches and Warnings
-with Lightning Detection

Helpful Information:

Weather Safety:

Protocols:

COD Severe Weather Protocols

Storm Ready®: Status Message

...loading current StormReady® status...

Current Conditions

College of DuPage SkyCam

Current Local Radar

Temperature
65°F
Feels Like:
65°F
Dew Point	Humidity
55°F	70%

Mostly Clear

Mostly Clear

Wind Strength
Light	Moderate	Strong
Southwest at 6 mph

Detailed Text Forecast

Due to staffing issues, forecast information from the COD Meteorology Department will be unavailable until Fall 2020.

for detailed forecast information: See National Weather Service Forecast .

COD Weather Statistics

COD Weather Station Statistics

Time of Observation: 6/02/20 - 2:40:12 am
Latitude: 41.89°N
Longitude: -88.15°W
Elevation: 747.63 ft
Sunrise: 5:20am
Sunset: 8:20pm

Current Weather Conditions

Currently: Mostly Clear
Visibility: 10SM
Present Weather:
Cloud Cover: Mostly Clear

Temperature and Pressure

Air Temperature: 64.90°F
Dewpoint Temperature: 54.82°F
Wet-Bulb Temperature: 61.54°F
Humidity: 69.84%
Wind Chill:
Heat Index:
Pressure: 1014.56mb

Precipitation and Wind

Current Precipitation: N/A
Measured Liquid Precipitation: 0.00 Inches
Current Wind: From the SW at 6.35mph
Recent Peak Wind Gust: 11.39mph at 2:38am

Recent Station Records

Highest Temperature (Today): 67.33°F
Lowest Temperature (Today): 64.85°F

Highest Relative Humidity (Today): 69.91%
Lowest Relative Humidity (Today): 63.94%

Highest Pressure (Today): 1015.92mb
Lowest Pressure (Today): 1014.56mb

Measured Liquid Precip (Today): 0.00 Inches
Measured Liquid Precip (Month): 0.00 Inches
Measured Liquid Precip (Year): 10.86 Inches

Peak Wind Gust (Today): 16.44mph at 1:50am

SPC Convective Outlook Day 1

See Product Description

365
ACUS01 KWNS 020543
SWODY1
SPC AC 020542

Day 1 Convective Outlook
NWS Storm Prediction Center Norman OK
1242 AM CDT Tue Jun 02 2020

Valid 021200Z - 031200Z

...THERE IS AN ENHANCED RISK OF SEVERE THUNDERSTORMS FROM SOUTHERN
MINNESOTA TO SOUTHERN WISCONSIN...

...SUMMARY...
Severe thunderstorms are expected later today from the middle
Missouri and upper Mississippi Valleys into the Great Lakes.
Damaging wind gusts, large hail and a couple of tornadoes are
possible, with the greatest threat expected from southern
Minnesota/northern Iowa into central Wisconsin.

...Middle MO Valley to Upper Great Lakes...

Early-morning water-vapor imagery depicts a strong short-wave trough
along the AB/SK border, extending into western MT. Southern extent
of this feature is forecast to move across the Dakotas later today
which will flatten the northern Plains ridge, then advance into the
upper Great Lakes tonight. In response, synoptic front is forecast
to move across northwestern WI - into southern MN - southeastern SD
by 18z, then drape itself from central WI - MN/IA border - central
NE by early evening. Latest model guidance strongly suggests
surface-based parcels will remain capped through 22z but convection
could begin to develop along the cool side of the front a few hours
earlier where short-wave forcing is more notable. Latest CAMs
suggest isolated elevated thunderstorms could initiate over eastern
SD by early afternoon, then spread/develop east along/near the
frontal zone into southern MN. A corridor of strong instability is
expected across this region into central WI and there is increasing
confidence that early-afternoon convection will eventually take
advantage of this downstream buoyancy and ingest moist/unstable
boundary-layer inflow. If so, robust convective updrafts are likely
with adequate shear for organized multi-cell clusters and perhaps a
few supercells. Forecast soundings suggest very large hail could
occur, but most likely with supercell structures. Otherwise, if an
MCS evolves ahead of the front, there is some concern for damaging
winds given the instability. This activity should propagate across
southern WI into lower MI after sunset, possibly spreading into
northern OH during the pre-dawn hours.

...Eastern WY...

Surface front is forecast to settle south across the High Plains of
eastern WY with northeasterly upslope flow expected to develop by
late afternoon. Boundary-layer heating and orographic forcing
suggest isolated supercells may develop along the southern fringe of
modest westerly mid-level flow. This activity should spread
southeast toward the NE Panhandle during the evening.

..Darrow/Lyons.. 06/02/2020

$$

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.

Hazardous Weather Outlook

See Product Description

063
FLUS43 KLOT 012044
HWOLOT

Hazardous Weather Outlook
National Weather Service Chicago/Romeoville IL
344 PM CDT Mon Jun 1 2020

ILZ003>006-008-010>013-019>021-023-032-033-039-103>108-INZ001-002-
010-011-019-022045-
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-
344 PM CDT Mon Jun 1 2020 /444 PM EDT Mon Jun 1 2020/

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

.DAY ONE...Tonight.

No hazardous weather is expected at this time.

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

Tuesday...
Limited Severe Thunderstorm Risk overnight.
Wednesday...
Elevated Severe Thunderstorm Risk.
Limited Flooding Risk.
Thursday and Friday...
Limited Thunderstorm Risk.
Sunday...
Limited Thunderstorm Risk.

DISCUSSION:

Early season heat will spread over the area on Tuesday with
afternoon heat indices expected to reach the mid 90s.

There is a chance of thunderstorms Tuesday night into early
Wednesday, possibly bringing a severe and heavy rain threat mainly
toward the Wisconsin line.

Thunderstorms are possible again Wednesday afternoon mainly along
and south of I-80. Some of these storms could be strong to severe
with an additional heavy rain threat.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will not be necessary through tonight.

$$

LMZ740>745-022045-
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-
344 PM CDT Mon Jun 1 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...Tonight.

Weather hazards expected...

Hazardous conditions for small craft.

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

Tuesday and Wednesday...
Limited Severe Thunderstorm Risk.
Thursday and Friday...
Limited Thunderstorm Risk.
Sunday...
Limited Thunderstorm Risk.

$$

Lenning

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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

492
ACUS02 KWNS 020602
SWODY2
SPC AC 020600

Day 2 Convective Outlook
NWS Storm Prediction Center Norman OK
0100 AM CDT Tue Jun 02 2020

Valid 031200Z - 041200Z

...THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS FROM THE
NORTH-CENTRAL PLAINS TO THE MIDWEST/OHIO VALLEY AND NORTHEAST
STATES/DELMARVA...

...SUMMARY...
Severe thunderstorms are expected on Wednesday from the
North-central Plains to the Midwest, Ohio Valley, and parts of the
Northeast States/Delmarva.

...Overview...
An extensive west/east zone of severe-weather potential is expected
on Wednesday, influenced by a south/southeastward-moving front
across the Midwest/Ohio Valley to Northeast States/Delmarva, and a
supercell-favorable environment across the north-central High
Plains.

...North-central High Plains/Central Plains...
A belt of strengthening westerlies over the northern Plains will
influence the region into Wednesday afternoon/night. Severe
thunderstorms will initially be possible across the north-central
High Plains Wednesday afternoon in vicinity of a prefrontal trough
and/or southeastward-moving front. This includes western South
Dakota and possibly southwest North Dakota/northwest Nebraska. Other
storm development may focus in vicinity of northeast
Colorado/southwest Nebraska into northwest Kansas. At least isolated
supercells are expected across these regions with large hail and
strong wind gusts probable. Into Wednesday evening/night, there is
the possibility than an MCS or at least several storm clusters could
persist and move southeastward Wednesday night, generally near the
Kansas/Nebraska border. If so, a severe threat could continue into
the overnight.

...Upper Ohio Valley/Northeast States...
A low-amplitude shortwave trough and a related belt of strong
cyclonically curved west-northwesterly winds aloft (40-55 kt at 500
mb) will overlie a south/southeastward-spreading front. The
potential exists for early day convection across the region, and
this convection and related cloud cover casts some uncertainty 1)
regarding the exact degree of destabilization and 2) a preferred
corridor of any higher coverage severe potential.

That said, moderate buoyancy (upwards of 2000 J/kg MLCAPE) is
plausible near/south of the front and to the south of any residual
early day precipitation/outflow. Storms will likely
increase/intensify through early/mid afternoon near the effective
front. The strong mid/high-level westerlies and 40+ kt effective
shear would support some initial supercells along with
well-organized southeastward-moving clusters. Damaging winds and
severe hail are expected. Although low-level winds will tend to
remain veered in areas near/south of the front, moderately strong
low-level shear/SRH could yield a non-zero tornado risk during the
afternoon and early evening hours.

...Midwest including Missouri to Ohio...
The boundary layer should become moderately to strongly unstable
Wednesday afternoon along and south of a southward-advancing front,
with the strongest destabilization (3000+ J/kg MLCAPE) expected
across northern/central Missouri into much of Illinois/Indiana.
Sufficient near-frontal convergence and forcing for ascent should
allow for at least widely scattered deep convective development
through the afternoon. While deep-layer/low-level winds will be not
be overly strong, the degree of instability and roughly 20-30 kt
effective shear will support sustained multicellular clusters
capable of wind damage and severe hail.

..Guyer.. 06/02/2020

$$

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

142
ACUS03 KWNS 020730
SWODY3
SPC AC 020729

Day 3 Convective Outlook
NWS Storm Prediction Center Norman OK
0229 AM CDT Tue Jun 02 2020

Valid 041200Z - 051200Z

...THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS ACROSS THE CENTRAL
PLAINS AND MIDDLE/LOWER MISSOURI VALLEY...

...SUMMARY...
Severe thunderstorms are expected across parts of the Central Plains
and Lower/Middle Missouri River Valley on Thursday, with other
strong/severe thunderstorms possible from the Ozarks to the
Mid-Atlantic region and Carolinas.

...Central Plains and Middle/Lower Missouri Valley...
Although guidance variability exists regarding timing/location of
relevant shortwave features into the Day 3 time frame, the region
will be influenced by a moderately strong belt of low-amplitude
westerlies. A relatively moist/potentially unstable air mass is
expected near a front along the South Dakota/Nebraska border
vicinity and along/east of a southward-extending surface trough
across west-central portions of Nebraska and Kansas.

Surface-based convective development appears most likely to occur by
mid/late afternoon across east-central/northeast Nebraska into
southwest South Dakota/southwest Minnesota. Steep lapse rates,
moderate to strong buoyancy (2000-3500 J/kg MLCAPE) in the presence
of 40 kt effective shear will be favorable for supercells capable of
large hail and possibly some tornado risk. It seems probable that
one or more southeastward-moving forward-propagating clusters of
storms could evolve during the evening, with a damaging wind threat
increasing accordingly, potentially across areas such as eastern
Nebraska into western Iowa/northeast Kansas/northern Missouri.

...Southern Appalachians/Mid-Atlantic States/Carolinas...
Near/south of a front across these regions, moderate instability may
develop particularly across parts of Virginia/northern North
Carolina Thursday afternoon. Deep-layer shear will not be strong,
but 20-25 kt mid-level westerlies should overlie much of the frontal
corridor. Isolated severe thunderstorms will be possible, with wind
damage as the primary hazard. A categorical Slight Risk could
ultimately be warranted for parts of the region.

..Guyer.. 06/02/2020

$$

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.