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COD Severe Weather Protocols

Storm Ready®: Status Message

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Current Conditions

College of DuPage SkyCam

Current Local Radar

Temperature
76°F
Feels Like:
76°F
Dew Point	Humidity
58°F	53%

Partly Cloudy

Partly Cloudy

Wind Strength
Light	Moderate	Strong
West at 4 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: 9/23/20 - 1:29:21 pm
Latitude: 41.89°N
Longitude: -88.15°W
Elevation: 747.63 ft
Sunrise: 6:42am
Sunset: 6:46pm

Current Weather Conditions

Currently: Partly Cloudy
Visibility: 9.87SM
Present Weather:
Cloud Cover: Partly Cloudy

Temperature and Pressure

Air Temperature: 75.87°F
Dewpoint Temperature: 57.58°F
Wet-Bulb Temperature: 69.77°F
Humidity: 53.12%
Wind Chill:
Heat Index:
Pressure: 1017.27mb

Precipitation and Wind

Current Precipitation: N/A
Measured Liquid Precipitation: 0.00 Inches
Current Wind: From the W at 3.52mph
Recent Peak Wind Gust: 8.33mph at 1:27pm

Recent Station Records

Highest Temperature (Today): 76.17°F
Lowest Temperature (Today): 53.78°F

Highest Relative Humidity (Today): 100.00%
Lowest Relative Humidity (Today): 51.92%

Highest Pressure (Today): 1019.3mb
Lowest Pressure (Today): 1017.27mb

Measured Liquid Precip (Today): 0.00 Inches
Measured Liquid Precip (Month): 2.40 Inches
Measured Liquid Precip (Year): 8.93 Inches

Peak Wind Gust (Today): 10.08mph at 12:56pm

SPC Convective Outlook Day 1

See Product Description

636
ACUS01 KWNS 231632
SWODY1
SPC AC 231630

Day 1 Convective Outlook
NWS Storm Prediction Center Norman OK
1130 AM CDT Wed Sep 23 2020

Valid 231630Z - 241200Z

...THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS ACROSS PORTIONS OF
LOUISIANA/MISSISSIPPI...

...SUMMARY...
A tornado or two may occur this afternoon and evening across
southern portions of Louisiana/Mississippi. A few strong to severe
storms with hail and gusty winds are possible this evening from
northern Minnesota into Wisconsin and western Upper Michigan. A few
strong storms may also affect coastal Washington this
evening/tonight.

...Southern Louisiana/southern Mississippi...
The post-tropical remnants of Beta will continue to move
northeastward and gradually phase with a slow-moving shortwave
trough over the Ozarks/middle Mississippi Valley. The surface low
near the southeast Texas/southwest Louisiana border at late morning
will move northeast and reach western/central Mississippi tonight,
while a low-preceding warm front and moisture-rich warm sector
(low/mid 70s F surface dewpoints) will gradually develop northward
across southeast Louisiana/southern Mississippi through the
afternoon and tonight.

Some cloud breaks have been noted and convection will continue
developing within several convergence bands east of the surface
low/remnant center. The main risk for a couple of tornadoes will be
in a relatively narrow corridor this afternoon and evening as storms
move northward and interact with the warm front where 0-1 km
hodograph size will be maximized in conjunction with an easterly
component to the near-surface winds.

...Northern Minnesota/western Wisconsin/western Upper Michigan...
Prior forecast reasoning remains largely unchanged. Steep 7.5-8 C/km
mid-level lapse rates will develop eastward through the upper
Mississippi Valley in advance of a low-amplitude shortwave trough.
This will contribute to modest instability with 1000-1500 J/kg
MUCAPE in vicinity of an east-west oriented baroclinic zone, even
with somewhat limited low-level moisture. It is likely that storms
will develop this evening as deeper ascent accompanying the
shortwave trough interacts with the boundary. Effective bulk shear
might become sufficient for a few storms to develop modest mid-level
updraft rotation which, in conjunction with the thermodynamic
environment, will support some threat for severe hail. There may be
some tendency for storms to congeal into a small MCS capable of
producing a few strong wind gusts as well.

...Coastal Washington...
Stronger height falls will occur later today with the strongest
cooling aloft and destabilization expected after 00Z across western
Washington. A leading band of precipitation associated with warm
advection will give way to discrete cells moving rapidly east/inland
off the ocean. While only a few hundred J/kg MLCAPE will exist,
strong large-scale lift as well as long hodographs may favor a few
long-lived cells, possibly with rotation which will contribute to a
threat for gusty winds and small hail.

..Guyer/Leitman.. 09/23/2020

$$

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 2

See Product Description

284
ACUS02 KWNS 231724
SWODY2
SPC AC 231722

Day 2 Convective Outlook
NWS Storm Prediction Center Norman OK
1222 PM CDT Wed Sep 23 2020

Valid 241200Z - 251200Z

...THERE IS A MARGINAL RISK OF SEVERE THUNDERSTORMS ACROSS PORTIONS
OF THE CENTRAL GULF COAST STATES...

...SUMMARY...
Isolated strong to severe storms may occur Thursday across parts of
Mississippi into southern/central Alabama and the Florida Panhandle.
Damaging winds and perhaps a brief tornado or two will be the main
threats.

...Synopsis...
Weak flow aloft is forecast across the southern half of the U.S.
Thursday, with the faster/more active belt of westerlies to remain
over the northern half of the country through the period.

Mid-level remnants of tropical system Beta, and a short-wave trough
moving across the Great Lakes region, are forecast to gradually
merge across the northeastern quarter of the country. Meanwhile, as
a short-wave trough moves across the northwestern states and
Canadian Rockies, an accompanying westerly mid-level jet will expand
across the northwestern and eventually north-central portions of the
CONUS.

At the surface, the remnant low that was Beta will weaken with time
as it crosses Mississippi and later moves into the Tennessee Valley
region. Meanwhile, a low over the upper Midwest will likewise
weaken with time, as a cold front crosses the northwestern quarter
of the country and eventually shifts into the Dakotas/Nebraska
overnight.

...Parts of Mississippi into Alabama and the Florida Panhandle...
Though remnant tropical system Beta is expected to continue
weakening as it shifts slowly northeastward across the central Gulf
Coast states, southerly winds ahead of the system will advect rich
Gulf moisture northward into this area. Despite the moist low
levels, any diurnal heating will be at least partially offset by
weak lapse rates aloft, thus yielding only modest CAPE. Still,
given veering flow with height east and southeast of the remnant
low, shear may be sufficient to support a couple of stronger storms,
and associated/low-probability potential for locally gusty winds --
and possibly a brief tornado or two -- mainly during the first half
of the period.

..Goss.. 09/23/2020

$$

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

354
ACUS03 KWNS 230727
SWODY3
SPC AC 230726

Day 3 Convective Outlook
NWS Storm Prediction Center Norman OK
0226 AM CDT Wed Sep 23 2020

Valid 251200Z - 261200Z

...NO SEVERE THUNDERSTORM AREAS FORECAST...

...SUMMARY...
The potential for organized severe thunderstorms on Friday across
parts of the Upper Midwest appears too uncertain to include any risk
areas at this time.

...Upper Midwest...
A strong westerly mid/upper-level jet is forecast to persist on
Friday across much of the Pacific Northwest to the northern Rockies
and north-central states. A shortwave trough embedded within this
flow regime should move eastward across the Upper Midwest through
the period. At the surface, a cold front will likewise sweep
eastward across this region, with a modest increase in low-level
moisture occurring ahead of the front across parts of eastern MN
into western WI and vicinity. At this point, most guidance suggests
that warm mid-level temperatures preceding the shortwave trough will
keep the warm sector capped through the day. Still, there is a
non-zero chance that near-surface-based storms could form along or
just ahead of the front across parts of east-central MN into
northwestern WI by Friday evening. If this occurs, then severe
thunderstorms appear possible given the forecast combination of weak
instability with strong deep-layer shear. However, the more probable
scenario is for mainly elevated storms to form north of the warm
sector Friday evening/night in a low-level warm advection regime,
with a minimal severe risk farther south. Given these uncertainties
and model differences, have opted to defer possible inclusion of low
severe probabilities across this region to a later outlook.

...Southeast...
Isolated to scattered thunderstorms may occur across a broad portion
of the Southeast on Friday as a weak, positively tilted shortwave
trough moves eastward over this region. Although mid-level
southwesterly flow should be modestly enhanced, the lack of any
discernible surface low, poor mid-level lapse rates, and weak
instability all suggest that any organized severe thunderstorm risk
should remain low.

..Gleason.. 09/23/2020

$$

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.