Harrisburg, IL

3:56 PM CST on February 11, 2012 (GMT -0600)
Elev: 367 ft
Lon: 88.5° 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 Forecast for Saturday, February 11, 2012.

Precipitation will spread across the East Coast on Saturday, while more rain and mountain snow showers are anticipated for parts of the West. A trough of low pressure and associated cold front continue moving eastward across the Eastern Valleys into the Eastern Seaboard. Cool temperatures to the north will allow for snow showers to develop across the Northeast and New England, while rain showers are likely over the Mid-Atlantic states. Rain showers over the Southeastern states should wind down in the early morning hours as the tail end of the system pushes offshore early in the day. Expect the New York metropolitan area to see 1 to 3 inches of snow, while the Washington D.C. area will see a messy combination of snow and freezing rain as high temperatures reach into the lower 40s.

Behind this system, a ridge of high pressure continues to build in from the Plains, pushing cold and dry air in from Canada. This allows for plenty of sunshine to spread from the Plains over the Mississippi River Valley and into the Eastern Valleys. Expect the Northern Plains and Upper Midwest to see highs in the teens again, while the Midwest will see highs in the 20s. Strong winds will accompany this system, pushing windchill values below zero in these areas. The Southern Plains will remain in the 40s on Saturday.

Out West, a trough of low pressure pushes a cold front over the Pacific Northwest and continues pulling moisture onshore with it. This will kick up more rain showers with high elevation snow showers likely in the Cascades. The tail end of the frontal boundary will sweep through California, bringing light rain showers to the coasts and interior valleys. Expect light snow showers in the Sierra Nevadas by Saturday evening.
Weather Underground Forecast for Saturday, February 11, 2012.

Precipitation will spread across the East Coast on Saturday, while more rain and mountain snow showers are anticipated for parts of the West. A trough of low pressure and associated cold front continue moving eastward across the Eastern Valleys into the Eastern Seaboard. Cool temperatures to the north will allow for snow showers to develop across the Northeast and New England, while rain showers are likely over the Mid-Atlantic states. Rain showers over the Southeastern states should wind down in the early morning hours as the tail end of the system pushes offshore early in the day. Expect the New York metropolitan area to see 1 to 3 inches of snow, while the Washington D.C. area will see a messy combination of snow and freezing rain as high temperatures reach into the lower 40s.

Behind this system, a ridge of high pressure continues to build in from the Plains, pushing cold and dry air in from Canada. This allows for plenty of sunshine to spread from the Plains over the Mississippi River Valley and into the Eastern Valleys. Expect the Northern Plains and Upper Midwest to see highs in the teens again, while the Midwest will see highs in the 20s. Strong winds will accompany this system, pushing windchill values below zero in these areas. The Southern Plains will remain in the 40s on Saturday.

Out West, a trough of low pressure pushes a cold front over the Pacific Northwest and continues pulling moisture onshore with it. This will kick up more rain showers with high elevation snow showers likely in the Cascades. The tail end of the frontal boundary will sweep through California, bringing light rain showers to the coasts and interior valleys. Expect light snow showers in the Sierra Nevadas by Saturday evening.
Weather Underground Broadcast Network
Harrisburg Weather at a Glance
Updated 3:24 PM CST
Elevation
360 ft
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Now
Clear
Clear
Temperature
28 °F
Feels Like 16 °F
Wind(mph)
17
Sunrise / Set
6:48 AM
5:28 PM
Moon
Waning Gibbous
Today
Partly Cloudy 25 °F
Partly Cloudy
Tonight
Clear 13 °F
Clear
Tomorrow
Clear 29 | 18 °F
Clear
Monday
Snow 34 | 29 °F
Snow
60% chance of precipitation
Tuesday
Ice Pellets 41 | 29 °F
Ice Pellets
20% chance of precipitation
Wednesday
Partly Cloudy 47 | 36 °F
Partly Cloudy
Today is forecast to be Much Cooler than yesterday.
Conditions
Pressure
30.46 in
Visibility
10.0 miles
Clouds
Clear -
Moisture
Humidity
51%
Rainfall
0.02 in
Snow Depth
Not available.
METAR
METAR KHSB 112155Z AUTO 32016G21KT 10SM CLR M02/M13 A3047 RMK AO2
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Weather Radio
Launch Weather Radio
Temperature
Windchill
16 °F
Dew Point
12 °F
Wind
Speed / Dir
17 mph from NNW
Wind Gust
23.0 mph
Health
UV
1 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 Saline
Tonight
nt_sunny Clear. Lows around 15. Northwest winds 10 to 15 mph.
Sunday
sunny Sunny. Highs in the lower 30s. West winds 5 to 10 mph.
Sunday Night
nt_sunny Mostly clear. Lows around 18. South winds 5 mph.
Monday
snow Cloudy. A 40 percent chance of sprinkles...snow and sleet in the afternoon. Highs in the upper 30s. 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
snow Mostly cloudy. A 20 percent chance of light rain and light snow in the morning. Highs around 40.
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 in the upper 30s.
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 mid 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 62946
Saturday, 11
Partly Cloudy
25 | 13 °F
Partly Cloudy
Chance of
Precipitation
0%
Sunday, 12
Clear
29 | 18 °F
Clear
Chance of
Precipitation
0%
Monday, 13
Snow
34 | 29 °F
Snow
Chance of
Precipitation
60%
Tuesday, 14
Ice Pellets
41 | 29 °F
Ice Pellets
Chance of
Precipitation
20%
Wednesday, 15
Partly Cloudy
47 | 36 °F
Partly Cloudy
Chance of
Precipitation
10%
Thursday, 16
Chance of Rain
52 | 36 °F
Chance of Rain
Chance of
Precipitation
40%
Friday, 17
Partly Cloudy
47 | NA
Partly Cloudy
Chance of
Precipitation
10%
Source: NWS at 2:55 PM CST on February 11, 2012
Regional Forecast for Saline
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 | 0 16 | 2
Wind 18 mph NNW 16 mph NNW 13 mph NW 12 mph NW
Humidity 64% 34% 34% 53%
Chance of Precip. 60% 0% 0% 0%
Cloud Cover 47% 0% 0% 0%
Conditions Partly Cloudy Clear Clear Clear
Sunrise & Sunset
6:48 AM
5:28 PM
Source: NWS at 2:55 PM CST on February 11, 2012
Regional Forecast for Saline
Sunday
sunny Sunny. Highs in the lower 30s. West winds 5 to 10 mph.
Sunday Night
nt_sunny Mostly clear. Lows around 18. South winds 5 mph.
Hourly Forecast 6AM 12 Noon 6PM 12 Midnight
Temp. | Dew Point 14 | 2 27 | 0 27 | 2 22 | 11
Wind 7 mph WNW 8 mph WNW 4 mph West 2 mph SW
Humidity 57% 27% 32% 62%
Chance of Precip. 0% 0% 0% 10%
Cloud Cover 0% 0% 11% 35%
Conditions Clear Clear Clear Partly Cloudy
Sunrise & Sunset
6:47 AM
5:29 PM
Source: NWS at 2:55 PM CST on February 11, 2012
Regional Forecast for Saline
Monday
snow Cloudy. A 40 percent chance of sprinkles...snow and sleet in the afternoon. Highs in the upper 30s. 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 | 11 31 | 14 32 | 22 29 | 29
Wind 5 mph South 11 mph South 8 mph South 8 mph South
Humidity 70% 50% 66% 95%
Chance of Precip. 10% 60% 60% 90%
Cloud Cover 70% 89% 100% 100%
Conditions Mostly Cloudy Snow Snow Chance of Snow
Sunrise & Sunset
6:46 AM
5:30 PM
Source: NWS at 2:55 PM CST on February 11, 2012
Regional Forecast for Saline
Tuesday
snow Mostly cloudy. A 20 percent chance of light rain and light snow in the morning. Highs around 40.
Tuesday Night
nt_partlycloudy Partly cloudy. Lows in the upper 20s.
Hourly Forecast 6AM 12 Noon 6PM 12 Midnight
Temp. | Dew Point 29 | 29 38 | 34 38 | 32 32 | 31
Wind 6 mph SSW 6 mph WSW 4 mph WSW 1 mph SW
Humidity 96% 82% 82% 92%
Chance of Precip. 90% 20% 20% 10%
Cloud Cover 98% 73% 52% 46%
Conditions Ice Pellets Mostly Cloudy Partly Cloudy Partly Cloudy
Sunrise & Sunset
6:45 AM
5:31 PM
Source: NWS at 2:55 PM CST on February 11, 2012
Regional Forecast for Saline
Wednesday
partlysunny Partly sunny. Highs in the upper 40s.
Wednesday Night
nt_chancerain Mostly cloudy with a 50 percent chance of rain. Lows in the upper 30s.
Hourly Forecast 6AM 12 Noon 6PM 12 Midnight
Temp. | Dew Point 29 | 29 43 | 36 43 | 36 38 | 38
Wind 1 mph SSW 4 mph South 4 mph SE 4 mph SE
Humidity 95% 76% 76% 96%
Chance of Precip. 10% 10% 10% 50%
Cloud Cover 56% 60% 70% 82%
Conditions Partly Cloudy Partly Cloudy Chance of Rain Chance of Rain
Sunrise & Sunset
6:44 AM
5:32 PM
Source: NWS at 2:55 PM CST on February 11, 2012
Regional Forecast for Saline
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 mid 30s. Highs in the upper 40s.
Hourly Forecast 6AM 12 Noon 6PM 12 Midnight
Temp. | Dew Point 36 | 36 47 | 43 47 | 40 40 | 36
Wind 4 mph SE 8 mph SSW 6 mph West 6 mph WNW
Humidity 99% 86% 76% 85%
Chance of Precip. 50% 40% 40% 10%
Cloud Cover 91% 72% 63% 64%
Conditions Chance of Rain Chance of Rain Partly Cloudy Partly Cloudy
Sunrise & Sunset
6:44 AM
5:32 PM
Source: NWS at 2:55 PM CST on February 11, 2012
Regional Forecast for Saline
Thursday Night and Friday
nt_partlycloudy Partly cloudy. Lows in the mid 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 36 | 31 45 | 34 47 | 40 40 | 36
Wind 6 mph NW 11 mph NW 6 mph West 6 mph WNW
Humidity 82% 67% 76% 85%
Chance of Precip. 10% 10% 40% 10%
Cloud Cover 67% 55% 63% 64%
Conditions Partly Cloudy Partly Cloudy Partly Cloudy Partly Cloudy
Sunrise & Sunset
6:44 AM
5:32 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)
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 6:48 AM CST 5:28 PM CST
Civil Twilight 6:21 AM CST 5:55 PM CST
Nautical Twilight 5:50 AM CST 6:26 PM CST
Astronomical Twilight 5:20 AM CST 6:57 PM CST
Moon 10:09 PM CST 8:37 AM CST
Length Of Visible Light 11h 33m
Length of Day
10h 39m
Tomorrow will be 2m 11s longer.
Waning Gibbous, 80% 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
28 °F
Flora
28 °F
Cahokia
7 °F
Waukegan
7 °F
Freeport
8 °F
Chicago DuPage
8 °F
Rochelle
8 °F
Rockford
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
Harrisburg 28 °F Clear 3:55 PM CST
Marion Regional 27 °F Clear 2:55 PM CST
Carmi 27 °F Clear 3:39 PM CST
Carbondale 29 °F Clear 3:52 PM CST
View all Aviation Tools
Flight To ETA Status
No flights were found.
Flight Tracker by FlightAware FlightAware
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Type Condition
Flight Rule: VFR (KHSB)
Wind Speed: 16.0 kts.
Wind Dir: 330° (NNW)
Ceiling: Unlimited

METAR KHSB 112155Z AUTO 32016G21KT 10SM CLR M02/M13 A3047 RMK AO2

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Nearby Events
Event Date Forecast
\"Tartuffe\" 7:00 PM CST 2012-02-11 Clear, 23°F
\"Tartuffe\" 2:00 PM CST 2012-02-12 Clear, 34°F
Arthritis Foundation Exercise Program 9:00 AM CST 2012-02-13 Overcast, 32°F
Arthritis Foundation Exercise Program 11:00 AM CST 2012-02-13 Overcast, 35°F
Arthritis Foundation Exercise Program 12:00 PM CST 2012-02-13 Rain, 37°F
Arthritis Foundation Exercise Program 9:00 AM CST 2012-02-15 Partly Cloudy, 36°F
Event data courtesy eviesays.com
Sports
Event Date Forecast
Budweiser Shootout 8:29 PM EST on February 18, 2012 Average High 71° F/ 21° C
Gatorade Duel 1 2:19 PM EST on February 23, 2012 Average High 70° F/ 21° C
Event Date Forecast
AT&T Pebble Beach National Pro-Am 8:30 AM PST on February 11, 2012 Rain Showers, 45 °F
AT&T Pebble Beach National Pro-Am 8:30 AM PST on February 12, 2012 Mostly Cloudy, 45 °F
View all Sports Weather
Weather Stations
Station Location Temp. Windchill Dew Point Humidity Wind Precipitation Elevation Updated Type Website
APRSWXNET Harrisburg IL , Raleigh, IL 28 °F 16 °F 12 °F 51% NNW  at  17 mph 0.00 in / hr 360 ft 3:24 PM CST MADIS
1.7 mi. N of, Thompsonville, IL 28.4 °F 16 °F 9 °F 43% NNW  at  17.0 mph - / hr 490 ft 3:49 PM CST Normal  
RAWS DIXON SPRINGS IL, Simpson, IL 29 °F 19 °F 5 °F 36% WNW  at  13 mph 0.00 in / hr 540 ft 3:08 PM CST MADIS
RAWS SHAWNEE PORTABLE #1 IL, Simpson, IL 28 °F 16 °F 4 °F 35% NNW  at  16 mph 0.00 in / hr 437 ft 2:54 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.