Marion, IL

6:09 PM CST on February 11, 2012 (GMT -0600)
Elev: 453 ft
Lon: 88.9° W
Lat: 37.7° N
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Active Advisory: Special Statement (US Severe Weather)
Tropical Weather: Tropical Cyclone Giovanna (South Indian Ocean) Tropical Cyclone Jasmine (Southern Pacific)
Weather Summary
Kari Kiefer
Weather Underground midday recap for Saturday, February 11, 2012.

Cold air poured into the Plains on Saturday, while snow showers developed in parts of the Northeast. A strong low pressure system that brought heavy rain to the Southern Plains and Southeast has advanced eastward and off the East Coast into the Atlantic Ocean. However, counter-clockwise flow around this system continued to push moisture into the Northeast, Great Lakes, and Ohio River Valley. In addition to cool air over the region, this allowed for snow showers to develop across Michigan and the Ohio River Valley. Snowfall accumulations ranged from 1 to 3 inches in most areas, with up to 5 inches at higher elevations of the Central Appalachians. Coastal regions remained slightly warmer, which maintained light rain showers from southern Maine through Virginia.

Behind this system, a dominant ridge of high pressure continued to build over the Plains. This system started to stretch eastward over the Mississippi Valley. Flow around this system pulled cold air in from central Canada and kept seasonable cool temperatures over the Central US. High temperatures only reached into the 30s in parts of northern Texas, while the Central and Northern Plains saw highs in the teens, with overnight lows in the negative teens.

Out West, cool conditions persisted with areas of wet weather as a trough of low pressure moved over the Pacific Northwest and into the Intermountain West and Great Basin. Rainfall totals and high elevation snow accumulation remained light. A few light rain showers extended into California as moist onshore flow persisted.
Weather Underground midday recap for Saturday, February 11, 2012.

Cold air poured into the Plains on Saturday, while snow showers developed in parts of the Northeast. A strong low pressure system that brought heavy rain to the Southern Plains and Southeast has advanced eastward and off the East Coast into the Atlantic Ocean. However, counter-clockwise flow around this system continued to push moisture into the Northeast, Great Lakes, and Ohio River Valley. In addition to cool air over the region, this allowed for snow showers to develop across Michigan and the Ohio River Valley. Snowfall accumulations ranged from 1 to 3 inches in most areas, with up to 5 inches at higher elevations of the Central Appalachians. Coastal regions remained slightly warmer, which maintained light rain showers from southern Maine through Virginia.

Behind this system, a dominant ridge of high pressure continued to build over the Plains. This system started to stretch eastward over the Mississippi Valley. Flow around this system pulled cold air in from central Canada and kept seasonable cool temperatures over the Central US. High temperatures only reached into the 30s in parts of northern Texas, while the Central and Northern Plains saw highs in the teens, with overnight lows in the negative teens.

Out West, cool conditions persisted with areas of wet weather as a trough of low pressure moved over the Pacific Northwest and into the Intermountain West and Great Basin. Rainfall totals and high elevation snow accumulation remained light. A few light rain showers extended into California as moist onshore flow persisted.
Weather Underground Broadcast Network
Marion Weather at a Glance
Updated 6:09 PM CST
Elevation
420 ft
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Now
Clear
Clear
Temperature
28.0 °F
Feels Like 28 °F
Wind(mph)
0.0
Sunrise / Set
6:50 AM
5:29 PM
Moon
Waning Gibbous
Tonight
Clear 14 °F
Clear
Tomorrow
Clear 32 °F
Clear
Tomorrow Night
Partly Cloudy 18 °F
Partly Cloudy
Monday
Ice Pellets 36 | 29 °F
Ice Pellets
50% chance of precipitation
Tuesday
Mostly Cloudy 40 | 29 °F
Mostly Cloudy
Wednesday
Partly Cloudy 49 | 40 °F
Partly Cloudy
Tomorrow is forecast to be Warmer than today.
Conditions
Pressure
30.49 in
Visibility
20.0 miles
Clouds
Clear -
Moisture
Humidity
47%
Rainfall
0.00 in
Snow Depth
Not available.
METAR
METAR KMWA 112355Z 35015KT 20SM SKC M03/ A3051
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Weather Radio
Weather Radio Index
Temperature
Windchill
28 °F
Dew Point
10 °F
Wind
Speed / Dir
Calm
Wind Gust
16.6 mph
Health
UV
0 out of 16
Pollen
1.10 out of 12
Pollen Forecast
Air Quality
Not available.
Flu Activity
Regional
View Flu Map
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Regional Forecast for Williamson
Tonight
nt_sunny Clear. Lows around 15. Northwest winds 10 to 15 mph.
Sunday
sunny Sunny. Highs in the lower 30s. Northwest winds 5 to 10 mph.
Sunday Night
nt_sunny Mostly clear. Lows around 19. South winds 5 mph.
Monday
snow Cloudy. A 50 percent chance of sprinkles...snow and sleet in the afternoon. Highs in the upper 30s. Temperature steady or slowly falling in the afternoon. South winds 10 to 15 mph.
Monday Night
nt_snow Occasional snow in the evening...then snow likely after midnight. Lows around 30. Temperature steady or slowly rising after midnight. South winds 5 to 10 mph. Chance of precipitation near 100 percent.
Tuesday
cloudy Mostly cloudy. Highs in the lower 40s.
Tuesday Night
nt_partlycloudy Partly cloudy. Lows in the upper 20s.
Wednesday
partlysunny Partly sunny. Highs in the upper 40s.
Wednesday Night
nt_chancerain Mostly cloudy with a 50 percent chance of rain. Lows around 40.
Thursday
chancerain Mostly cloudy with a 40 percent chance of rain. Highs in the lower 50s.
Thursday Night and Friday
nt_partlycloudy Partly cloudy. Lows in the lower 30s. Highs in the upper 40s.
Friday Night and Saturday
nt_sunny Mostly clear. Lows in the lower 30s. Highs in the upper 40s.
Source: NWS at 2:55 PM CST on February 11, 2012
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Forecast
View Calendar 7-Day Weather Forecast for 62959
Saturday, 11
Partly Cloudy
27 | 14 °F
Partly Cloudy
Chance of
Precipitation
50%
Sunday, 12
Clear
32 | 18 °F
Clear
Chance of
Precipitation
0%
Monday, 13
Ice Pellets
36 | 29 °F
Ice Pellets
Chance of
Precipitation
50%
Tuesday, 14
Mostly Cloudy
40 | 29 °F
Mostly Cloudy
Chance of
Precipitation
10%
Wednesday, 15
Partly Cloudy
49 | 40 °F
Partly Cloudy
Chance of
Precipitation
10%
Thursday, 16
Chance of Rain
52 | 32 °F
Chance of Rain
Chance of
Precipitation
30%
Friday, 17
Partly Cloudy
49 | 31 °F
Partly Cloudy
Chance of
Precipitation
10%
Saturday, 18
Clear
49 | NA
Clear
Chance of
Precipitation
0%
Source: NWS at 2:55 PM CST on February 11, 2012
Regional Forecast for Williamson
Tonight
nt_sunny Clear. Lows around 15. Northwest winds 10 to 15 mph.
Hourly Forecast 6AM 12 Noon 6PM 12 Midnight
Temp. | Dew Point 18 | 9 23 | 0 22 | 4 20 | 5
Wind 18 mph NNW 18 mph NNW 13 mph NW 8 mph NW
Humidity 64% 36% 43% 53%
Chance of Precip. 60% 50% 50% 0%
Cloud Cover 41% 0% 0% 0%
Conditions Partly Cloudy Clear Clear Clear
Sunrise & Sunset
6:50 AM
5:29 PM
Source: NWS at 2:55 PM CST on February 11, 2012
Regional Forecast for Williamson
Sunday
sunny Sunny. Highs in the lower 30s. Northwest winds 5 to 10 mph.
Sunday Night
nt_sunny Mostly clear. Lows around 19. South winds 5 mph.
Hourly Forecast 6AM 12 Noon 6PM 12 Midnight
Temp. | Dew Point 16 | 5 29 | 4 29 | 7 22 | 11
Wind 6 mph WNW 8 mph WNW 4 mph WSW 1 mph SSW
Humidity 64% 33% 38% 59%
Chance of Precip. 0% 0% 0% 0%
Cloud Cover 0% 0% 20% 19%
Conditions Clear Clear Clear Clear
Sunrise & Sunset
6:49 AM
5:30 PM
Source: NWS at 2:55 PM CST on February 11, 2012
Regional Forecast for Williamson
Monday
snow Cloudy. A 50 percent chance of sprinkles...snow and sleet in the afternoon. Highs in the upper 30s. Temperature steady or slowly falling in the afternoon. South winds 10 to 15 mph.
Monday Night
nt_snow Occasional snow in the evening...then snow likely after midnight. Lows around 30. Temperature steady or slowly rising after midnight. South winds 5 to 10 mph. Chance of precipitation near 100 percent.
Hourly Forecast 6AM 12 Noon 6PM 12 Midnight
Temp. | Dew Point 20 | 13 34 | 14 29 | 22 29 | 27
Wind 4 mph South 9 mph South 7 mph South 6 mph South
Humidity 73% 45% 71% 92%
Chance of Precip. 0% 50% 50% 100%
Cloud Cover 76% 100% 100% 100%
Conditions Mostly Cloudy Ice Pellets Snow Snow
Sunrise & Sunset
6:47 AM
5:31 PM
Source: NWS at 2:55 PM CST on February 11, 2012
Regional Forecast for Williamson
Tuesday
cloudy Mostly cloudy. Highs in the lower 40s.
Tuesday Night
nt_partlycloudy Partly cloudy. Lows in the upper 20s.
Hourly Forecast 6AM 12 Noon 6PM 12 Midnight
Temp. | Dew Point 29 | 27 38 | 32 38 | 32 32 | 31
Wind 4 mph South 5 mph WSW 2 mph West 1 mph SSW
Humidity 88% 78% 82% 92%
Chance of Precip. 100% 10% 10% 10%
Cloud Cover 94% 71% 58% 40%
Conditions Overcast Mostly Cloudy Partly Cloudy Partly Cloudy
Sunrise & Sunset
6:46 AM
5:33 PM
Source: NWS at 2:55 PM CST on February 11, 2012
Regional Forecast for Williamson
Wednesday
partlysunny Partly sunny. Highs in the upper 40s.
Wednesday Night
nt_chancerain Mostly cloudy with a 50 percent chance of rain. Lows around 40.
Hourly Forecast 6AM 12 Noon 6PM 12 Midnight
Temp. | Dew Point 29 | 29 45 | 34 45 | 36 41 | 40
Wind 1 mph South 5 mph South 4 mph SE 4 mph SSE
Humidity 96% 67% 68% 92%
Chance of Precip. 10% 10% 10% 50%
Cloud Cover 51% 57% 72% 92%
Conditions Partly Cloudy Partly Cloudy Chance of Rain Chance of Rain
Sunrise & Sunset
6:45 AM
5:34 PM
Source: NWS at 2:55 PM CST on February 11, 2012
Regional Forecast for Williamson
Thursday
chancerain Mostly cloudy with a 40 percent chance of rain. Highs in the lower 50s.
Thursday Night and Friday
nt_partlycloudy Partly cloudy. Lows in the lower 30s. Highs in the upper 40s.
Hourly Forecast 6AM 12 Noon 6PM 12 Midnight
Temp. | Dew Point 40 | 40 49 | 41 45 | 38 38 | 34
Wind 5 mph South 7 mph WSW 6 mph WNW 5 mph WNW
Humidity 95% 76% 76% 85%
Chance of Precip. 50% 40% 40% 10%
Cloud Cover 91% 67% 53% 47%
Conditions Chance of Rain Chance of Rain Partly Cloudy Partly Cloudy
Sunrise & Sunset
6:45 AM
5:34 PM
Source: NWS at 2:55 PM CST on February 11, 2012
Regional Forecast for Williamson
Thursday Night and Friday
nt_partlycloudy Partly cloudy. Lows in the lower 30s. Highs in the upper 40s.
Friday Night and Saturday
nt_sunny Mostly clear. Lows in the lower 30s. Highs in the upper 40s.
Hourly Forecast 6AM 12 Noon 6PM 12 Midnight
Temp. | Dew Point 34 | 29 45 | 29 43 | 31 36 | 25
Wind 5 mph NW 6 mph WNW 5 mph WNW 2 mph WSW
Humidity 85% 53% 60% 64%
Chance of Precip. 10% 10% 10% 10%
Cloud Cover 49% 37% 36% 14%
Conditions Partly Cloudy Partly Cloudy Partly Cloudy Clear
Sunrise & Sunset
6:45 AM
5:34 PM
Source: NWS at 2:55 PM CST on February 11, 2012
Regional Forecast for Williamson
Friday Night and Saturday
nt_sunny Mostly clear. Lows in the lower 30s. Highs in the upper 40s.
Hourly Forecast 6AM 12 Noon 6PM 12 Midnight
Temp. | Dew Point 32 | 25 45 | 29 43 | 31 36 | 25
Wind 1 mph NNW 5 mph SSW 5 mph WNW 2 mph WSW
Humidity 74% 55% 60% 64%
Chance of Precip. 10% 10% 10% 10%
Cloud Cover 13% 17% 36% 14%
Conditions Clear Clear Partly Cloudy Clear
Sunrise & Sunset
6:45 AM
5:34 PM
BestForecast (what's this?)
Scientific Forecaster Discussion — MOS Weather Graph
Nearby
History & Almanac
February 11, 2012 Max Temp Min Temp
Normal (KMWA) 43 °F 22 °F
Record (KMWA) 73 °F (1999) -8 °F (1982)
Yesterday 39.4 °F 28.0 °F
Choose a date
Earthquake Activity
City Distance Mag. Time & Date
No recent earthquake activity has been reported nearby.
Minimum magnitude displayed is 2.5.
More information at USGS.gov
Astronomy
Feb. 11, 2012 Rise Set
Actual Time 6:50 AM CST 5:29 PM CST
Civil Twilight 6:23 AM CST 5:56 PM CST
Nautical Twilight 5:52 AM CST 6:27 PM CST
Astronomical Twilight 5:21 AM CST 6:58 PM CST
Moon 10:10 PM CST (2/11) 8:38 AM CST (2/11)
Length Of Visible Light 11h 33m
Length of Day
10h 39m
Tomorrow will be 2m 11s longer.
Waning Gibbous, 79% of the Moon is Illuminated
Today
Waning Gibbous
Feb 14
Last Quarter
Feb 21
New
Feb 29
First Quarter
Mar 8
Full
Visit Astronomy
Today's Extremes
State Highs State Lows
44 °F
Marion Regional
32 °F
Cairo
30 °F
Metropolis
30 °F
Harrisburg
28 °F
Cahokia
7 °F
Waukegan
7 °F
Freeport
8 °F
Rochelle
8 °F
Chicago DuPage
8 °F
Aurora
Source: NWS
Snow Depth
Station Depth Elevation
No new snow has been reported.
Snow Depth Reports — Snow Depth Map
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Travel Planning
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Aviation
City Temp. Conditions Updated
Marion Regional 27 °F Clear 5:55 PM CST
Harrisburg 27 °F N/A 5:55 PM CST
Carbondale 26 °F Clear 5:52 PM CST
Metropolis 27 °F Clear 5:55 PM CST
View all Aviation Tools
Flight To ETA Status
No flights were found.
Flight Tracker by FlightAware FlightAware
View U.S. Airport Delays
Type Condition
Flight Rule: VFR (KMWA)
Wind Speed: 15.0 kts.
Wind Dir: 337° (NNW)
Ceiling: Unlimited

METAR KMWA 112355Z 35015KT 20SM SKC M03/ A3051

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Event data courtesy eviesays.com
Sports
Event Date Forecast
Budweiser Shootout 8:29 PM EST on February 18, 2012 Partly Cloudy, 63 °F
Gatorade Duel 1 2:19 PM EST on February 23, 2012 Average High 70° F/ 21° C
Event Date Forecast
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Weather Stations
Station Location Temp. Windchill Dew Point Humidity Wind Precipitation Elevation Updated Type Website
Johnston City, Johnston City, IL 28.0 °F 28 °F 10 °F 47% NNW  at  0.0 mph 0.00 in / hr 420 ft 6:09 PM CST Rapid Fire  
RAWS CRAB ORCHARD IL, Energy, IL 26 °F 18 °F 4 °F 38% NW  at  7 mph 0.00 in / hr 450 ft 5:48 PM CST MADIS
HADS BIG MUDDY RIVER AT PLUMFIELD IL, Zeigler, IL - - - - North  at  - 0.00 in / hr 404 ft 5:30 PM CST MADIS
1.7 mi. N of, Thompsonville, IL 26.6 °F 18 °F 10 °F 50% West  at  9.2 mph - / hr 490 ft 6:07 PM CST Normal  
New Bush, Royalton, IL 25.8 °F 20 °F 13 °F 58% NW  at  5.0 mph 0.00 in / hr 395 ft 6:05 PM CST Normal  
Public Works, Carbondale, IL 27.0 °F 20 °F 9 °F 46% NW  at  6.0 mph 0.00 in / hr 400 ft 6:04 PM CST Normal  
APRSWXNET Harrisburg IL , Raleigh, IL 27 °F 18 °F 12 °F 53% NNW  at  10 mph 0.00 in / hr 360 ft 5:39 PM CST MADIS
Buckner, IL 24.8 °F 15 °F 10 °F 54% NNW  at  9.0 mph 0.00 in / hr 410 ft 6:09 PM CST Rapid Fire
Northeast of Benton, Benton, IL 26.2 °F 17 °F 12 °F 55% NNW  at  10.0 mph 0.00 in / hr 433 ft 5:55 PM CST Normal
Mulkeytown Fresh Farm, Mulkeytown, IL 24.7 °F 17 °F 8 °F 48% NNW  at  7.0 mph 0.00 in / hr 437 ft 6:08 PM CST Normal
HADS REND LAKE NEAR REND IL, Benton, IL - - - - North  at  - 0.00 in / hr 455 ft 5:30 PM CST MADIS
RAWS DIXON SPRINGS IL, Simpson, IL 27 °F 17 °F 4 °F 36% NW  at  12 mph 0.00 in / hr 540 ft 5:08 PM CST MADIS
RAWS SHAWNEE PORTABLE #1 IL, Simpson, IL 27 °F 17 °F 4 °F 36% NW  at  11 mph 0.00 in / hr 437 ft 4:54 PM CST MADIS
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Special Statement
Mobile & Email Alerts Statement as of 2:41 PM CST on February 11, 2012

... Winter weather event likely by Monday afternoon on through
Monday night...

Moisture will over spread the region Monday... ahead of an upper
level storm system... forecast to be over western Missouri by
Monday evening. The wintry precipitation may be slow to develop
initially Monday west of the Mississippi River over southeast
Missouri... as the airmass will be very dry across the region.
However by afternoon... wintry precipitation should work its way to
the surface... with the activity spreading east from southeast
Missouri Monday afternoon... to areas east of the Mississippi River
including southern Illinois... southwest Indiana and west Kentucky
late Monday afternoon into Monday evening.

Most of the wintry precipitation is expected to be in the form
of snow. However... mixed wintry precipitation is possible as well
with this event... especially south of the Ohio River... and
over southeast Missouri... mainly south of Highway 60.

Preliminary indications suggest no less than 1 to 2 inches may
accumulate most areas. Some data suggests higher amounts will
be possible. Given the Prospect for mixed wintry precipitation
and the variance seen in the model data... it is still a bit too
soon to gauge snowfall amounts with much confidence. The latest
data suggests higher precipitation rates will occur south of a
line from Perryville Missouri to Owensboro Kentucky.

Despite the uncertainties with respect to snow amounts... it does
appear that travel impacts will be possible Monday night. Surface
temperatures... antecedent Road conditions... and precipitation
rates will all play a role in the level of impact. Given the cold
air well established across the region ahead of the approaching
system... accumulation will begin shortly after onset.

So... stay tuned for the latest updates. It is possible either
a watch... warning or advisory may be required for the upcoming
event.


Cn



229 PM CST Sat Feb 11 2012

... Winter weather event likely by Monday afternoon on through
Monday night...

Moisture will over spread the region Monday... ahead of an upper
level storm system... forecast to be over western Missouri by
Monday evening. The wintry precipitation may be slow to develop
initially Monday west of the Mississippi River over southeast
Missouri ... S the airmass will be very dry across the region.
However by afternoon... wintry precipitation should work its way to
the surface... with the activity spreading east from southeast
Missouri Monday afternoon... to areas east of the Mississippi
River including southern Illinois... southwest Indiana and west
Kentucky late Monday afternoon into Monday evening.

Most of the wintry precipitation is expected to be in the form
of snow. However... mixed wintry precipitation is possible as well
with this event... especially south of the Ohio River... and
over southeast Missouri... mainly south of Highway 60.

Preliminary indications suggest no less than 1 to 2 inches may
accumulate most areas. Some data suggests higher amounts will
be possible. Given the Prospect for mixed wintry precipitation
and the variance seen in the model data... it is still a bit too
soon to gauge snowfall amounts with much confidence. The latest
data suggests higher precipitation rates will occur south of a
line from Perryville Missouri to Owensboro Kentucky.

Despite the uncertainties with respect to snow amounts... it does
appear that travel impacts will be possible Monday night. Surface
temperatures... antecedent Road conditions... and precipitation
rates will all play a role in the level of impact. Given the cold
air well established across the region ahead of the approaching
system... accumulation will begin shortly after onset.

So... stay tuned for the latest updates. It is possible either
a watch... warning or advisory may be required for the upcoming
event.