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
79°F
Feels Like:
79°F
Dew Point	Humidity
45°F	30%

Mostly Cloudy

Mostly Cloudy

Wind Strength
Light	Moderate	Strong
Southwest at 13 mph GUST: 17mph

Detailed Text Forecast

Due to staffing issues, forecast information from the COD Meteorology Department will be unavailable until Fall 2021.

For detailed forecast information: See National Weather Service Forecast .

COD Weather Statistics

COD Weather Station Statistics

Time of Observation: 9/26/21 - 4:20:10 pm
Latitude: 41.89°N
Longitude: -88.15°W
Elevation: 747.63 ft
Sunrise: 6:45am
Sunset: 6:41pm

Current Weather Conditions

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

Temperature and Pressure

Air Temperature: 79.33°F
Dewpoint Temperature: 45.44°F
Wet-Bulb Temperature: 68.03°F
Humidity: 30.26%
Wind Chill:
Heat Index:
Pressure: 1010.84mb

Precipitation and Wind

Current Precipitation: N/A
Measured Liquid Precipitation: 0.00 Inches
Current Wind: From the SW at 12.99mph
Recent Peak Wind Gust: 16.66mph at 4:20pm

Recent Station Records

Highest Temperature (Today): 81.62°F
Lowest Temperature (Today): 49.93°F

Highest Relative Humidity (Today): 76.42%
Lowest Relative Humidity (Today): 26.78%

Highest Pressure (Today): 1015.24mb
Lowest Pressure (Today): 1010.84mb

Measured Liquid Precip (Today): 0.00 Inches
Measured Liquid Precip (Month): 0.63 Inches
Measured Liquid Precip (Year): 0.63 Inches

Peak Wind Gust (Today): 28.06mph at 12:31pm

SPC Convective Outlook Day 1

See Product Description

947
ACUS01 KWNS 261949
SWODY1
SPC AC 261948

Day 1 Convective Outlook
NWS Storm Prediction Center Norman OK
0248 PM CDT Sun Sep 26 2021

Valid 262000Z - 271200Z

...THERE IS A MARGINAL RISK OF SEVERE THUNDERSTORMS THIS
AFTERNOON/EVENING ACROSS PARTS OF SOUTHEAST AZ/SOUTHWEST NM...

...SUMMARY...
Isolated severe hail and/or gusts remain possible this afternoon and
evening across southeast Arizona and southwest New Mexico.

...20Z Update...
No changes have been made to the Marginal Risk area across parts of
southeast AZ and southwest NM. Around 500-1000 J/kg of MLCAPE has
developed across this area, with modestly enhanced mid-level winds
supporting 20-30 kt of effective bulk shear. Isolated instances of
marginally severe hail and strong/gusty winds should remain the
primary severe threats with any of the stronger storms through the
remainder of the afternoon and continuing into the early evening.

..Gleason.. 09/26/2021

.PREV DISCUSSION... /ISSUED 1115 AM CDT Sun Sep 26 2021/

...Synopsis...
A closed midlevel low over the northern Gulf of CA will move slowly
eastward near the southern AZ border through tonight. Surface
heating in cloud breaks across southeast AZ/southwest NM, and ascent
northeast of the midlevel low will support scattered thunderstorm
development this afternoon into this evening. Moderate buoyancy
(MLCAPE near 1000 J/kg) and effective bulk shear of 25-30 kt will
support the potential for a few semi-organized storm clusters.
Isolated strong outflow gusts will be possible with the stronger
storms given steepening low-level lapse rates. Though lapse rates
aloft will not be particularly steep, the moderate buoyancy and
vertical shear may support isolated, marginally severe hail.

Otherwise, isolated lightning flashes will be possible through mid
afternoon with elevated convection over eastern ME with an ejecting
shortwave trough. A few thunderstorms are expected this afternoon
across southwest FL with a weak backdoor cold front and local sea
breeze circulations. Overnight, isolated lightning flashes may
occur with weak elevated convection in the warm conveyor belt over
northwest WA, immediately in advance of a midlevel trough and
baroclinic zone moving eastward over the southeast Gulf of Alaska.

$$

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 2

See Product Description

377
ACUS02 KWNS 261725
SWODY2
SPC AC 261724

Day 2 Convective Outlook
NWS Storm Prediction Center Norman OK
1224 PM CDT Sun Sep 26 2021

Valid 271200Z - 281200Z

...NO SEVERE THUNDERSTORM AREAS FORECAST...

...SUMMARY...
Organized severe storms appear unlikely across the contiguous United
States on Monday.

...Synopsis and Discussion...
A closed mid-level low is expected to move slowly eastward across
the Southwest on Monday. Modest low-level moisture should be present
along and east of a surface lee trough across the southern High
Plains. However, both instability and deep-layer shear are forecast
to remain weak across the southern High Plains and Southwest, which
should limit the potential for organized severe storms. Increasing
low-level moisture should also advance northward across parts of the
TX/LA Coastal Plain. Isolated to perhaps scattered storms may
eventually develop across this region by Monday evening/night in a
modest low-level warm advection regime, but severe storms are not
expected owing to weak shear.

An upper trough/low should advance gradually eastward over eastern
Canada through the period. An embedded shortwave trough should
develop southeastward from the Upper Midwest across the Great Lakes
and OH Valley by Monday evening, eventually reaching the Lower Great
Lakes and Mid-Atlantic by late Monday night. At the surface, a cold
front should make steady progress south-southeastward across these
regions. Even though some low-level moisture is forecast to return
ahead of the front, a cap should inhibit storm development through
much of the day. Elevated convection may eventually occur late
Monday evening through early Tuesday morning, but the forecast
instability appears insufficient to support more than an isolated
small hail threat at this time.

..Gleason.. 09/26/2021

$$

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

190
ACUS03 KWNS 260640
SWODY3
SPC AC 260639

Day 3 Convective Outlook
NWS Storm Prediction Center Norman OK
0139 AM CDT Sun Sep 26 2021

Valid 281200Z - 291200Z

...NO SEVERE THUNDERSTORM AREAS FORECAST...

...SUMMARY...
Severe storms are not forecast for Tuesday.

...Mid-Atlantic...

The eastern upper trough will progress offshore the Atlantic coast
by Tuesday evening. A surface cold front will sag southward across
the Mid-Atlantic during the day. Modest boundary-layer moisture will
support at least weak destabilization ahead of the boundary with
effective shear magnitudes forecast around 25 kt. This could support
a few strong storms around the Chesapeake Bay vicinity. However,
timing of the front and degree of destabilization remain too
uncertain to include severe probabilities at this time.

...Southern Plains...

A broad upper trough will emerge from the southern High Plains to
the Intermountain region on Tuesday. Southerly low level flow will
transport 60s surface dewpoints northward across much of OK/TX/KS.
While this will aid in pockets of weak to moderate destabilization
across the region, large-scale forcing will remain nebulous and
vertical shear modest. Warm advection will likely lead to areas of
showers and thunderstorms, but severe potential is uncertain. Any
stronger convection will likely be tied to areas where stronger
heating can occur, but overall storm mode/organization does not
appear favorable, precluding severe probabilities.

..Leitman.. 09/26/2021

$$

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.