Alto Pass, IL

12:47 AM CST on February 12, 2012 (GMT -0600)
Elev: 623 ft
Lon: 89.3° W
Lat: 37.6° 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 Sunday, February 12, 2012.

The East dries out on Sunday, but wet weather continues moving through the West. A trough of low pressure advances eastward over the Great Basin and Central Rockies, producing moderate snow showers over Utah and Colorado. Winter weather advisories have been issued for parts of western Colorado as snowfall accumulations may reach from 6 to 8 inches by Sunday evening. Most of Utah, western Wyoming, and northern New Mexico should see lighter snow showers with accumulation around 1 to 2 inches. The tail end of this trough will extend into western Texas, bringing snow and freezing rain showers into northwestern Texas. Precipitation from this system will move into the Texas Panhandle late Sunday into Monday morning. Winter storm warnings have been issued for the region as 3 to 5 inches of snow are possible, with ice accumulations from 0.10 to 0.30 inches by Sunday evening. This will cause dangerous roads and travel conditions.

Meanwhile, another trough of low pressure and associated cold front approach the West Coast on Sunday. This system will reach the coasts of the Pacific Northwest and northern California in the afternoon and evening hours, bringing more rain showers. Temperatures will remain cool over most of the West Coast as this system pushes clouds and moisture onshore.

In the East, a strong ridge of high pressure allows for dry, sunny, and cool weather to persist. This system creates strong flow from the north, pushing cold air into the Plains and Eastern Valleys. Expect highs to range in the 20s in the Midwest, while the Ohio River Valley and Tennessee Valleys will see highs in the 30s. Freeze advisories have been issued for the Gulf states as low temperatures will drop into the 20s Sunday night. Dangerous fire conditions spread over the Southeastern states due to high pressure creating a very dry airmas with strong winds.
Weather Underground Forecast for Sunday, February 12, 2012.

The East dries out on Sunday, but wet weather continues moving through the West. A trough of low pressure advances eastward over the Great Basin and Central Rockies, producing moderate snow showers over Utah and Colorado. Winter weather advisories have been issued for parts of western Colorado as snowfall accumulations may reach from 6 to 8 inches by Sunday evening. Most of Utah, western Wyoming, and northern New Mexico should see lighter snow showers with accumulation around 1 to 2 inches. The tail end of this trough will extend into western Texas, bringing snow and freezing rain showers into northwestern Texas. Precipitation from this system will move into the Texas Panhandle late Sunday into Monday morning. Winter storm warnings have been issued for the region as 3 to 5 inches of snow are possible, with ice accumulations from 0.10 to 0.30 inches by Sunday evening. This will cause dangerous roads and travel conditions.

Meanwhile, another trough of low pressure and associated cold front approach the West Coast on Sunday. This system will reach the coasts of the Pacific Northwest and northern California in the afternoon and evening hours, bringing more rain showers. Temperatures will remain cool over most of the West Coast as this system pushes clouds and moisture onshore.

In the East, a strong ridge of high pressure allows for dry, sunny, and cool weather to persist. This system creates strong flow from the north, pushing cold air into the Plains and Eastern Valleys. Expect highs to range in the 20s in the Midwest, while the Ohio River Valley and Tennessee Valleys will see highs in the 30s. Freeze advisories have been issued for the Gulf states as low temperatures will drop into the 20s Sunday night. Dangerous fire conditions spread over the Southeastern states due to high pressure creating a very dry airmas with strong winds.
Weather Underground Broadcast Network
Alto Pass Weather at a Glance
Updated 12:35 AM CST
Weather Station - report
Public Works, Carbondale
Elevation
400 ft
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Now
Clear
Clear
Temperature
22.5 °F
Feels Like 17 °F
Wind(mph)
4.0
Sunrise / Set
6:50 AM
5:33 PM
Moon
Waning Gibbous
Tonight
Clear 14 °F
Clear
Sunday
Clear 32 °F
Clear
Sunday Night
Partly Cloudy 18 °F
Partly Cloudy
Monday
Ice Pellets 36 | 29 °F
Ice Pellets
50% chance of precipitation
Tuesday
Partly Cloudy 41 | 29 °F
Partly Cloudy
Wednesday
Partly Cloudy 49 | 40 °F
Partly Cloudy
Today is forecast to be Warmer than yesterday.
Conditions
Pressure
30.53 in
Visibility
10.0 miles
Clouds
Clear -
Moisture
Humidity
58%
Rainfall
0.00 in
Snow Depth
Not available.
METAR
METAR KMDH 120552Z AUTO 33004KT 10SM CLR M06/M13 A3053 RMK AO2 SLP342 T10611128 11033 21061 410171072 58000
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Weather Radio
Launch Weather Radio
Temperature
Windchill
17 °F
Dew Point
10 °F
Wind
Speed / Dir
4.0 mph from NW
Wind Gust
9.0 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 Union
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. Snow likely...a chance of sprinkles and sleet in the afternoon. Highs in the upper 30s. Temperature steady or slowly falling in the afternoon. South winds 10 to 15 mph. Chance of precipitation 60 percent.
Monday Night
nt_chancesnow Occasional snow in the evening...then a chance of snow after midnight. Lows in the upper 20s. 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 around 30.
Wednesday
partlysunny Partly sunny with a 20 percent chance of rain. Highs in the upper 40s.
Wednesday Night
nt_chancerain Mostly cloudy with a 50 percent chance of rain. Lows in the lower 40s.
Thursday
chancerain Partly sunny with a 30 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 around 50.
Source: NWS at 10:25 PM CST on February 11, 2012
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Forecast
View Calendar 7-Day Weather Forecast for 62905
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
Partly Cloudy
41 | 29 °F
Partly 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 | 32 °F
Partly Cloudy
Chance of
Precipitation
10%
Saturday, 18
Clear
49 | NA
Clear
Chance of
Precipitation
0%
Source: NWS at 10:25 PM CST on February 11, 2012
Regional Forecast for Union
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 | 2 29 | 7 22 | 11
Wind 6 mph NW 7 mph WNW 4 mph SW 1 mph South
Humidity 64% 31% 38% 59%
Chance of Precip. 0% 0% 0% 0%
Cloud Cover 0% 7% 25% 24%
Conditions Clear Clear Clear Clear
Sunrise & Sunset
6:50 AM
5:33 PM
Source: NWS at 10:25 PM CST on February 11, 2012
Regional Forecast for Union
Monday
snow Cloudy. Snow likely...a chance of sprinkles and sleet in the afternoon. Highs in the upper 30s. Temperature steady or slowly falling in the afternoon. South winds 10 to 15 mph. Chance of precipitation 60 percent.
Monday Night
nt_chancesnow Occasional snow in the evening...then a chance of snow after midnight. Lows in the upper 20s. 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 | 16 29 | 22 31 | 29
Wind 4 mph South 9 mph South 9 mph South 6 mph South
Humidity 77% 47% 74% 92%
Chance of Precip. 0% 60% 60% 100%
Cloud Cover 84% 100% 100% 100%
Conditions Mostly Cloudy Ice Pellets Snow Chance of Snow
Sunrise & Sunset
6:49 AM
5:34 PM
Source: NWS at 10:25 PM CST on February 11, 2012
Regional Forecast for Union
Tuesday
cloudy Mostly cloudy. Highs in the lower 40s.
Tuesday Night
nt_partlycloudy Partly cloudy. Lows around 30.
Hourly Forecast 6AM 12 Noon 6PM 12 Midnight
Temp. | Dew Point 29 | 27 40 | 32 38 | 32 34 | 29
Wind 4 mph SSW 6 mph WSW 2 mph WSW 1 mph SSW
Humidity 88% 75% 79% 85%
Chance of Precip. 100% 10% 10% 10%
Cloud Cover 94% 67% 51% 38%
Conditions Overcast Partly Cloudy Partly Cloudy Partly Cloudy
Sunrise & Sunset
6:48 AM
5:35 PM
Source: NWS at 10:25 PM CST on February 11, 2012
Regional Forecast for Union
Wednesday
partlysunny Partly sunny with a 20 percent chance of rain. Highs in the upper 40s.
Wednesday Night
nt_chancerain Mostly cloudy with a 50 percent chance of rain. Lows in the lower 40s.
Hourly Forecast 6AM 12 Noon 6PM 12 Midnight
Temp. | Dew Point 31 | 29 45 | 34 47 | 36 43 | 40
Wind 1 mph South 5 mph South 4 mph SE 4 mph SSE
Humidity 92% 67% 68% 92%
Chance of Precip. 10% 20% 20% 50%
Cloud Cover 51% 57% 74% 93%
Conditions Chance of Rain Chance of Rain Chance of Rain Chance of Rain
Sunrise & Sunset
6:47 AM
5:36 PM
Source: NWS at 10:25 PM CST on February 11, 2012
Regional Forecast for Union
Thursday
chancerain Partly sunny with a 30 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 41 | 40 49 | 41 45 | 38 38 | 34
Wind 5 mph South 6 mph WSW 6 mph WNW 5 mph WNW
Humidity 95% 76% 76% 85%
Chance of Precip. 50% 30% 30% 10%
Cloud Cover 86% 64% 51% 45%
Conditions Chance of Rain Chance of Rain Partly Cloudy Partly Cloudy
Sunrise & Sunset
6:46 AM
5:37 PM
Source: NWS at 10:25 PM CST on February 11, 2012
Regional Forecast for Union
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 around 50.
Hourly Forecast 6AM 12 Noon 6PM 12 Midnight
Temp. | Dew Point 34 | 29 45 | 29 43 | 31 36 | 27
Wind 5 mph NW 6 mph NW 5 mph NW 2 mph WSW
Humidity 85% 53% 60% 67%
Chance of Precip. 10% 10% 10% 10%
Cloud Cover 48% 37% 35% 12%
Conditions Partly Cloudy Partly Cloudy Partly Cloudy Clear
Sunrise & Sunset
6:46 AM
5:37 PM
Source: NWS at 10:25 PM CST on February 11, 2012
Regional Forecast for Union
Friday Night and Saturday
nt_sunny Mostly clear. Lows in the lower 30s. Highs around 50.
Hourly Forecast 6AM 12 Noon 6PM 12 Midnight
Temp. | Dew Point 34 | 27 45 | 29 43 | 31 36 | 27
Wind 1 mph NNW 5 mph SSW 5 mph NW 2 mph WSW
Humidity 75% 53% 60% 67%
Chance of Precip. 10% 10% 10% 10%
Cloud Cover 13% 17% 35% 12%
Conditions Clear Clear Partly Cloudy Clear
Sunrise & Sunset
6:46 AM
5:37 PM
BestForecast (what's this?)
Scientific Forecaster Discussion — MOS Weather Graph
Nearby
History & Almanac
February 12, 2012 Max Temp Min Temp
Normal (KMDH) 44 °F 23 °F
Record (KMDH) 75 °F (1938) -4 °F (1981)
Yesterday 29.0 °F 19.4 °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. 12, 2012 Rise Set
Actual Time 6:50 AM CST 5:33 PM CST
Civil Twilight 6:23 AM CST 5:59 PM CST
Nautical Twilight 5:52 AM CST 6:30 PM CST
Astronomical Twilight 5:22 AM CST 7:01 PM CST
Moon 11:22 PM CST 9:17 AM CST
Length Of Visible Light 11h 36m
Length of Day
10h 42m
Tomorrow will be 2m 12s longer.
Waning Gibbous, 77% 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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News
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Travel Planning
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Aviation
City Temp. Conditions Updated
Carbondale 21 °F Clear 11:52 PM CST
Marion Regional This station is not reporting.
Cape Girardeau 22 °F Clear 11:53 PM CST
Cairo 25 °F Clear 12:35 AM 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 (KMDH)
Wind Speed: 4.0 kts.
Wind Dir: 315° (NW)
Ceiling: Unlimited

METAR KMDH 120552Z AUTO 33004KT 10SM CLR M06/M13 A3053 RMK AO2 SLP342 T10611128 11033 21061 410171072 58000

View all Reports & Maps
Nearby Events
Event Date Forecast
No events within 10 mi of location. View all events.
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
AT&T Pebble Beach National Pro-Am 8:30 AM PST on February 12, 2012 Mostly Cloudy, 45 °F
Northern Trust Open 8:30 AM PST on February 16, 2012 Clear, 63 °F
View all Sports Weather
Weather Stations
Station Location Temp. Windchill Dew Point Humidity Wind Precipitation Elevation Updated Type Website
HADS BIG MUDDY RIVER AT MURPHYSBORO IL, Murphysboro, IL - - - - North  at  - 0.00 in / hr 549 ft 12:00 AM CST MADIS
Public Works, Carbondale, IL 22.5 °F 17 °F 10 °F 58% NW  at  4.0 mph 0.00 in / hr 400 ft 12:35 AM CST Normal  
MesoWest Murphysboro , Murphysboro, IL 21 °F 21 °F - - North  at  - 0.00 in / hr 379 ft 11:40 PM CST MADIS
MesoWest Jacob , Jacob, IL 17 °F 17 °F - - North  at  - 0.00 in / hr 387 ft 11:55 PM CST MADIS
APRSWXNET Cape Girardeau MO , Cape Girardeau, MO 23 °F 23 °F 7 °F 49% NW  at  2 mph 0.00 in / hr 460 ft 12:33 AM CST MADIS
RAWS CRAB ORCHARD IL, Energy, IL 22 °F 15 °F 5 °F 48% NNW  at  5 mph 0.00 in / hr 450 ft 11:48 PM CST MADIS
RAWS BEAN RIDGE IL, Thebes, IL 22 °F 17 °F 2 °F 41% NW  at  4 mph 0.00 in / hr 700 ft 12:08 AM CST MADIS
Near Jackson City Park, Jackson, MO 21.9 °F 16 °F -3 °F 33% NNW  at  4.6 mph 0.00 in / hr 465 ft 12:47 AM CST Rapid Fire  
New Bush, Royalton, IL 22.6 °F 15 °F 12 °F 62% NW  at  6.0 mph 0.00 in / hr 395 ft 12:45 AM CST Normal  
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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.