Cortland, IL

11:16 PM CST on February 11, 2012 (GMT -0600)
Elev: 896 ft
Lon: 88.7° W
Lat: 41.9° N
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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
Cortland Weather at a Glance
Updated 11:15 PM CST
Elevation
0 ft
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Now
Clear
Clear
Temperature
14.8 °F
Feels Like 15 °F
Wind(mph)
3.0
Sunrise / Set
6:56 AM
5:22 PM
Moon
Waning Gibbous
Tonight
Clear 9 °F
Clear
Tomorrow
Clear 27 °F
Clear
Tomorrow Night
Clear 14 °F
Clear
Monday
Snow 31 | 27 °F
Snow
70% chance of precipitation
Tuesday
Chance of Snow 34 | 27 °F
Chance of Snow
20% chance of precipitation
Wednesday
Partly Cloudy 38 | 29 °F
Partly Cloudy
Tomorrow is forecast to be Warmer than today.
Conditions
Pressure
30.42 in
Visibility
10.0 miles
Clouds
Clear -
Moisture
Humidity
61%
Rainfall
0.00 in
Snow Depth
Not available.
METAR
METAR KDKB 120455Z AUTO 29014KT 10SM CLR M08/M18 A3035 RMK AO2 T10821182
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Weather Radio
Launch Weather Radio
Temperature
Windchill
15 °F
Dew Point
4 °F
Wind
Speed / Dir
3.0 mph from West
Wind Gust
5.0 mph
Health
UV
0 out of 16
Pollen
.30 out of 12
Pollen Forecast
Ozone
Good
PM2.5
Good
Flu Activity
Regional
View Flu Map
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Regional Forecast for De Kalb
Rest of Tonight
nt_sunny Clear. Lows 7 to 11 above. Wind chills as low as zero to 10 below zero. Northwest winds 10 to 20 mph.
Sunday
sunny Sunny. Highs in the upper 20s. Lowest wind chill readings zero to 10 below zero in the morning. West winds 10 to 15 mph.
Sunday Night
nt_sunny Mostly clear. Lows 13 to 17. Southwest winds around 10 mph.
Monday
snow Cloudy. Light snow likely in the afternoon. Highs in the lower 30s. South winds 10 to 15 mph. Chance of precipitation 70 percent.
Monday Night
nt_snow Light snow. Some snow accumulation possible. Lows in the upper 20s. South winds around 10 mph. Chance of precipitation 80 percent.
Tuesday
snow Mostly cloudy with a 20 percent chance of light snow. Highs in the mid 30s.
Tuesday Night
nt_partlycloudy Partly cloudy. Lows in the upper 20s.
Wednesday
partlysunny Partly sunny. Highs in the upper 30s.
Wednesday Night
nt_snow Mostly cloudy with a 30 percent chance of rain and snow. Lows in the upper 20s.
Thursday
snow Mostly cloudy with chance of light snow possibly mixed with rain. Highs in the upper 30s. Chance of precipitation 40 percent.
Thursday Night
nt_snow Partly cloudy with a 20 percent chance of light snow. Lows in the upper 20s.
Friday through Saturday
sunny Mostly clear. Highs in the upper 30s. Lows in the mid 20s.
Source: NWS at 9:29 PM CST on February 11, 2012
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Forecast
View Calendar 7-Day Weather Forecast for 60112
Sunday, 12
Clear
27 | 14 °F
Clear
Chance of
Precipitation
0%
Monday, 13
Snow
31 | 27 °F
Snow
Chance of
Precipitation
70%
Tuesday, 14
Chance of Snow
34 | 27 °F
Chance of Snow
Chance of
Precipitation
20%
Wednesday, 15
Partly Cloudy
38 | 29 °F
Partly Cloudy
Chance of
Precipitation
10%
Thursday, 16
Chance of Snow
38 | 25 °F
Chance of Snow
Chance of
Precipitation
40%
Friday, 17
Partly Cloudy
36 | 23 °F
Partly Cloudy
Chance of
Precipitation
10%
Saturday, 18
Clear
38 | NA
Clear
Chance of
Precipitation
0%
Source: NWS at 9:29 PM CST on February 11, 2012
Regional Forecast for De Kalb
Rest of Tonight
nt_sunny Clear. Lows 7 to 11 above. Wind chills as low as zero to 10 below zero. Northwest winds 10 to 20 mph.
Sunday
sunny Sunny. Highs in the upper 20s. Lowest wind chill readings zero to 10 below zero in the morning. West winds 10 to 15 mph.
Sunday Night
nt_sunny Mostly clear. Lows 13 to 17. Southwest winds around 10 mph.
Hourly Forecast 6AM 12 Noon 6PM 12 Midnight
Temp. | Dew Point 9 | 0 18 | 4 22 | 5 18 | 7
Wind 12 mph WNW 13 mph West 9 mph West 7 mph WSW
Humidity 66% 55% 48% 61%
Chance of Precip. 0% 0% 0% 0%
Cloud Cover 1% 1% 1% 8%
Conditions Clear Clear Clear Clear
Sunrise & Sunset
6:56 AM
5:22 PM
Source: NWS at 9:29 PM CST on February 11, 2012
Regional Forecast for De Kalb
Monday
snow Cloudy. Light snow likely in the afternoon. Highs in the lower 30s. South winds 10 to 15 mph. Chance of precipitation 70 percent.
Monday Night
nt_snow Light snow. Some snow accumulation possible. Lows in the upper 20s. South winds around 10 mph. Chance of precipitation 80 percent.
Hourly Forecast 6AM 12 Noon 6PM 12 Midnight
Temp. | Dew Point 16 | 7 29 | 13 27 | 22 27 | 25
Wind 6 mph SW 9 mph SSW 8 mph South 7 mph South
Humidity 66% 51% 80% 92%
Chance of Precip. 0% 70% 70% 80%
Cloud Cover 58% 100% 100% 100%
Conditions Partly Cloudy Snow Snow Snow
Sunrise & Sunset
6:55 AM
5:23 PM
Source: NWS at 9:29 PM CST on February 11, 2012
Regional Forecast for De Kalb
Tuesday
snow Mostly cloudy with a 20 percent chance of light snow. Highs in the mid 30s.
Tuesday Night
nt_partlycloudy Partly cloudy. Lows in the upper 20s.
Hourly Forecast 6AM 12 Noon 6PM 12 Midnight
Temp. | Dew Point 27 | 25 34 | 27 31 | 29 27 | 27
Wind 6 mph South 5 mph SW 5 mph WSW 5 mph WSW
Humidity 96% 78% 88% 96%
Chance of Precip. 80% 20% 20% 10%
Cloud Cover 88% 89% 84% 54%
Conditions Chance of Snow Chance of Snow Mostly Cloudy Partly Cloudy
Sunrise & Sunset
6:53 AM
5:24 PM
Source: NWS at 9:29 PM CST on February 11, 2012
Regional Forecast for De Kalb
Wednesday
partlysunny Partly sunny. Highs in the upper 30s.
Wednesday Night
nt_snow Mostly cloudy with a 30 percent chance of rain and snow. Lows in the upper 20s.
Hourly Forecast 6AM 12 Noon 6PM 12 Midnight
Temp. | Dew Point 27 | 23 36 | 29 34 | 29 31 | 27
Wind 5 mph SW 6 mph SW 2 mph South 2 mph SE
Humidity 88% 72% 78% 84%
Chance of Precip. 10% 10% 10% 30%
Cloud Cover 47% 57% 56% 62%
Conditions Partly Cloudy Partly Cloudy Chance of Snow Chance of Snow
Sunrise & Sunset
6:52 AM
5:25 PM
Source: NWS at 9:29 PM CST on February 11, 2012
Regional Forecast for De Kalb
Thursday
snow Mostly cloudy with chance of light snow possibly mixed with rain. Highs in the upper 30s. Chance of precipitation 40 percent.
Thursday Night
nt_snow Partly cloudy with a 20 percent chance of light snow. Lows in the upper 20s.
Hourly Forecast 6AM 12 Noon 6PM 12 Midnight
Temp. | Dew Point 29 | 27 36 | 31 34 | 31 27 | 27
Wind 5 mph East 2 mph NW 7 mph WNW 7 mph WNW
Humidity 95% 85% 89% 92%
Chance of Precip. 30% 40% 40% 20%
Cloud Cover 89% 80% 70% 55%
Conditions Chance of Snow Chance of Snow Chance of Snow Chance of Snow
Sunrise & Sunset
6:51 AM
5:27 PM
Source: NWS at 9:29 PM CST on February 11, 2012
Regional Forecast for De Kalb
Friday through Saturday
sunny Mostly clear. Highs in the upper 30s. Lows in the mid 20s.
Hourly Forecast 6AM 12 Noon 6PM 12 Midnight
Temp. | Dew Point 25 | 23 34 | 25 31 | 23 27 | 20
Wind 8 mph WNW 8 mph WNW 7 mph West 6 mph West
Humidity 92% 66% 72% 75%
Chance of Precip. 20% 10% 10% 10%
Cloud Cover 53% 44% 47% 18%
Conditions Partly Cloudy Partly Cloudy Partly Cloudy Clear
Sunrise & Sunset
6:51 AM
5:27 PM
Source: NWS at 9:29 PM CST on February 11, 2012
Regional Forecast for De Kalb
Friday through Saturday
sunny Mostly clear. Highs in the upper 30s. Lows in the mid 20s.
Hourly Forecast 6AM 12 Noon 6PM 12 Midnight
Temp. | Dew Point 23 | 20 36 | 23 31 | 23 27 | 20
Wind 6 mph West 4 mph WSW 7 mph West 6 mph West
Humidity 84% 58% 72% 75%
Chance of Precip. 10% 0% 10% 10%
Cloud Cover 14% 21% 47% 18%
Conditions Clear Clear Partly Cloudy Clear
Sunrise & Sunset
6:51 AM
5:27 PM
BestForecast (what's this?)
Scientific Forecaster Discussion — MOS Weather Graph
Nearby
Active Notice: Public Information Statement  (US Severe Weather)
History & Almanac
February 12, 2012 Max Temp Min Temp
Normal (KARR) 32 °F 15 °F
Record (KARR) 69 °F (1999) -4 °F (2008)
Yesterday 34 °F 11 °F
Yesterday's Heating Degree Days: 42
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
Air Quality
  Air Quality AQ Index Pollutant
Yesterday Good
PM2.5
Yesterday Good
OZONE
Current Good
OZONE
Current Good
PM2.5
Saturday Good
PM2.5
Sunday Good
PM2.5
Monday Good
PM2.5
Tuesday Good
PM2.5
Wednesday Moderate
PM2.5
Astronomy
Feb. 11, 2012 Rise Set
Actual Time 6:56 AM CST 5:22 PM CST
Civil Twilight 6:27 AM CST 5:51 PM CST
Nautical Twilight 5:54 AM CST 6:23 PM CST
Astronomical Twilight 5:22 AM CST 6:56 PM CST
Moon 10:16 PM CST (2/11) 8:33 AM CST (2/11)
Length Of Visible Light 11h 23m
Length of Day
10h 25m
Tomorrow will be 2m 33s 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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Travel Planning
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Aviation
City Temp. Conditions Updated
DeKalb 17 °F Clear 10:55 PM CST
Aurora 15 °F Clear 10:52 PM CST
Rochelle 17 °F Clear 10:55 PM CST
Chicago DuPage 16 °F Clear 10:52 PM CST
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Flight To ETA Status
No flights were found.
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Type Condition
Flight Rule: VFR (KDKB)
Wind Speed: 14.0 kts.
Wind Dir: 273° (West)
Ceiling: Unlimited

METAR KDKB 120455Z AUTO 29014KT 10SM CLR M08/M18 A3035 RMK AO2 T10821182

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Nearby Events
Event Date Forecast
NIU Wrestling vs. Siu & Tiffin 12:00 PM CST 2012-02-12 Clear, 25°F
Christopher Bell 8:00 PM CST 2012-02-13 Snow, 29°F
Northern Illinois Huskies Mens Basketball 7:00 PM CST 2012-02-15 Overcast, 35°F
Northern Illinois Huskies Womens Basketball vs. Ball State University Cardinals 7:00 PM CST 2012-02-16 Fog, 33°F
Mania! Tour 8:00 PM CST 2012-02-16 Fog, 31°F
Mutts 9:00 PM CST 2012-02-17 Partly Cloudy, 29°F
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
Rob's Horsepower Haven, DeKalb, IL 14.8 °F 15 °F 4 °F 61% West  at  3.0 mph 0.00 in / hr 0 ft 11:15 PM CST Normal  
South DeKalb, DeKalb, IL 15.2 °F 15 °F 4 °F 60% WNW  at  0.0 mph 0.00 in / hr 880 ft 11:16 PM CST Rapid Fire
Foxpointe, Sycamore, IL 13.8 °F 2 °F -21 °F 19% WNW  at  9.0 mph 0.00 in / hr 950 ft 11:15 PM CST Normal  
Sycamore, IL 16.7 °F 7 °F 3 °F 54% North  at  7.0 mph 0.00 in / hr 850 ft 11:16 PM CST Rapid Fire  
Northern Illinois University, DeKalb, IL 14.6 °F 15 °F 4 °F 62% North  at  1.0 mph 0.00 in / hr 879 ft 11:16 PM CST Rapid Fire
Heron Creek, Sycamore, IL 14.9 °F 15 °F 1 °F 53% WSW  at  0.0 mph 0.00 in / hr 860 ft 11:16 PM CST Rapid Fire
MesoWest Meredith , Elburn, IL 14 °F 14 °F - - North  at  - 0.00 in / hr 876 ft 9:30 PM CST MADIS
Ellen Oaks Subdivision, Genoa, IL 16.2 °F 10 °F 4 °F 57% WNW  at  4.0 mph 0.00 in / hr 883 ft 11:16 PM CST Rapid Fire
Hinckley Fire Station, Hinckley, IL 14.5 °F - -10 °F 32% NW  at  13.0 mph 0.00 in / hr 719 ft 11:15 PM CST Normal
White Oaks Farm, Burlington, IL 15.1 °F 9 °F 5 °F 63% NW  at  4.0 mph 0.00 in / hr 960 ft 10:45 PM CST Rapid Fire  
Genoa Road, Genoa, IL 16.3 °F 16 °F 3 °F 56% WNW  at  2.0 mph 0.00 in / hr 814 ft 11:12 PM CST Normal
CamptonHillsWeather.com Central Kane Cou, St Charles, IL 15.1 °F 9 °F 4 °F 61% NW  at  4.0 mph 0.00 in / hr 915 ft 11:16 PM CST Rapid Fire
Campton Hills, IL 15.1 °F 15 °F 1 °F 53% WSW  at  2.0 mph - / hr 830 ft 11:03 PM CST Normal  
Mill Creek, Geneva, IL 15.4 °F 2 °F -3 °F 44% WNW  at  12.4 mph 0.00 in / hr 760 ft 11:15 PM CST Rapid Fire  
Mill Creek (NE), Geneva, IL 16.0 °F 8 °F 6 °F 63% WNW  at  5.0 mph 0.00 in / hr 741 ft 11:16 PM CST Rapid Fire  
Windswept Acres, Marengo, IL 15.2 °F 4 °F 3 °F 58% NW  at  8.0 mph 0.00 in / hr 900 ft 11:14 PM CST Normal  
Waterford Oaks, North Aurora, IL 16.1 °F 16 °F 4 °F 59% WNW  at  2.0 mph 0.00 in / hr 714 ft 11:15 PM CST Rapid Fire  
West Batavia, Batavia, IL 15.5 °F 15 °F 4 °F 60% WNW  at  0.0 mph 0.00 in / hr 730 ft 11:06 PM CST Normal  
Hidden Farms Estates, Marengo, IL 14.1 °F 14 °F 2 °F 59% WNW  at  3.0 mph 0.00 in / hr 811 ft 11:15 PM CST Normal  
K9GPC, Rochelle, IL 15.1 °F 2 °F -14 °F 26% WNW  at  11.0 mph 0.00 in / hr 840 ft 11:16 PM CST Rapid Fire
Tri-Cities on the Fox River, Batavia, IL 16.1 °F 9 °F 1 °F 50% WNW  at  4.5 mph 0.00 in / hr 715 ft 11:15 PM CST Rapid Fire
Ronzheimer Ave. & S. Tyler Rd., St. Charles, IL 15.9 °F 16 °F 3 °F 55% NW  at  2.0 mph 0.00 in / hr 770 ft 11:16 PM CST Rapid Fire  
Rural--2.75 miles WSW of Sandwich, IL, Sandwich, IL 16.5 °F 5 °F -8 °F 32% WNW  at  9.8 mph 0.00 in / hr 698 ft 11:10 PM CST Normal
Kreutzer, Huntley, IL 14.3 °F 14 °F -2 °F 49% WNW  at  3.0 mph 0.00 in / hr 895 ft 11:05 PM CST Normal
Brayton Knolls, Marengo, IL 14.1 °F 7 °F -2 °F 49% WNW  at  4.0 mph 0.00 in / hr 919 ft 11:16 PM CST Rapid Fire  
Shore Heights, Oswego, IL 15.3 °F 7 °F 3 °F 58% WNW  at  5.1 mph 0.00 in / hr 668 ft 11:16 PM CST Rapid Fire  
Heartland in Yorkville, Yorkville, IL 17.1 °F 17 °F 2 °F 47% North  at  - 0.00 in / hr 635 ft 11:16 PM CST Normal  
MesoWest Flagg , Ashton, IL 13 °F 13 °F - - North  at  - 0.00 in / hr 777 ft 10:05 PM CST MADIS
WB9NJJ, Rochelle, IL 16.3 °F 11 °F -19 °F 19% West  at  3.1 mph 0.00 in / hr 810 ft 11:16 PM CST Rapid Fire  
near Kendall County Fairgrounds, Yorkville, IL 15.4 °F 15 °F -2 °F 46% WSW  at  2.5 mph 0.00 in / hr 735 ft 11:16 PM CST Rapid Fire
Farmington Lakes, Oswego, IL 16.7 °F 17 °F 5 °F 59% WSW  at  0.7 mph 0.00 in / hr 0 ft 11:04 PM CST Normal  
By Fox Bend Golf Course, Oswego, IL 24.7 °F 17 °F 8 °F 49% SSW  at  6.3 mph 0.00 in / hr 646 ft 11:16 PM CST Rapid Fire
HADS KISHWAUKEE RIVER AT PERRYVILLE IL, Cherry Valley, IL - - - - North  at  - 0.00 in / hr 691 ft 10:30 PM CST MADIS
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Public Information Statement
Mobile & Email Alerts Statement as of 8:00 PM CST on February 11, 2012

Snowfall and snow depth reports.
Data provided by National Weather Service Chicago area and Rockford
area snowfall team.

                12 hr snowfall 12 hr snowfall total
location ending 6pm ending 6am snow
                today today depth at 6pm
Illinois

Beach Park / T /
Beecher / 0.1 /
Downers Grove 0.0 / T / 1
Grayslake / T /
Peotone 0.0 / T / 1
Plainfield 4sw / T /
Richton Park / 0.6 /
Schaumburg / T /
WillowBrook 0.0 / T / T

Northwest Indiana

Highland / 1.9 /
Schererville 0.0 / 0.6 / 0


View All U.S. Severe Weather