Defiance, MO

3:01 PM CST on February 13, 2012 (GMT -0600)
Elev: 682 ft
Lon: 90.8° W
Lat: 38.7° N
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Tropical Weather: Tropical Cyclone Giovanna (South Indian Ocean) Tropical Cyclone Jasmine (Southern Pacific)
Weather Summary
Weather Underground Forecast for Monday, February 13, 2012.

The trough of low pressure that brought unsettled weather to the West on Sunday will advance into the Plains on Monday with more mixed precipitation. The trough will support a low and associated warm front moving eastward into the Southern Plains. As the system progresses, rain showers with periods of heavy rain and isolated thunderstorms will spread from parts of central/eastern Texas into western Louisiana, mixed precipitation will develop in parts of Oklahoma and Arkansas, and snow will blanket parts of the Central Plains, Mid-Mississippi Valley, and parts of the western Ohio Valley. Areas from eastern Texas through Arkansas should expect the heaviest precipitation totals. Heightened winter weather conditions will allow Winter Weather Advisories and a few Winter Storm Warnings to remain in effect through the day. Elsewhere east of the Continental Divide, lake-effect snow showers will continue along parts of the Lower Great Lakes Snowbelt.

In the West, a Pacific cold front pushing across the Pacific Northwest will drop southward across northern California, bringing coastal and valley rain and significant snowfall to the Sierra Nevadas.
Weather Underground Forecast for Monday, February 13, 2012.

The trough of low pressure that brought unsettled weather to the West on Sunday will advance into the Plains on Monday with more mixed precipitation. The trough will support a low and associated warm front moving eastward into the Southern Plains. As the system progresses, rain showers with periods of heavy rain and isolated thunderstorms will spread from parts of central/eastern Texas into western Louisiana, mixed precipitation will develop in parts of Oklahoma and Arkansas, and snow will blanket parts of the Central Plains, Mid-Mississippi Valley, and parts of the western Ohio Valley. Areas from eastern Texas through Arkansas should expect the heaviest precipitation totals. Heightened winter weather conditions will allow Winter Weather Advisories and a few Winter Storm Warnings to remain in effect through the day. Elsewhere east of the Continental Divide, lake-effect snow showers will continue along parts of the Lower Great Lakes Snowbelt.

In the West, a Pacific cold front pushing across the Pacific Northwest will drop southward across northern California, bringing coastal and valley rain and significant snowfall to the Sierra Nevadas.
Defiance Weather at a Glance
Updated 2:49 PM CST
Elevation
742 ft
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Now
Light Snow
Light Snow
Temperature
31.3 °F
Feels Like 31 °F
Wind(mph)
2.0
Sunrise / Set
6:57 AM
5:38 PM
Moon
Waning Gibbous
Today
Snow 32 °F
Snow
100% chance of precipitation
Tonight
Ice Pellets 29 °F
Ice Pellets
100% chance of precipitation
Tomorrow
Partly Cloudy 41 | 27 °F
Partly Cloudy
Wednesday
Chance of Snow 45 | 40 °F
Chance of Snow
60% chance of precipitation
Thursday
Chance of Rain 47 | 29 °F
Chance of Rain
20% chance of precipitation
Friday
Partly Cloudy 45 | 27 °F
Partly Cloudy
Today is forecast to be Cooler than yesterday.
Conditions
Pressure
29.98 in
Visibility
1.8 miles
Clouds
Scattered Clouds 1300 ft
Scattered Clouds 1800 ft
Overcast 2500 ft
Moisture
Humidity
88%
Rainfall
0.00 in
Snow Depth
Not available.
METAR
METAR KSUS 132054Z 17009G14KT 1 3/4SM R08R/5500VP6000FT -SN SCT013 SCT018 OVC025 00/M03 A2996 RMK AO2 SLP154 P0000 60001 T00001028 56032
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Weather Radio
Temperature
Windchill
31 °F
Dew Point
28 °F
Wind
Speed / Dir
2.0 mph from SSE
Wind Gust
7.0 mph
Health
UV
1 out of 16
Pollen
.50 out of 12
Pollen Forecast
Air Quality
Not available.
Flu Activity
Regional
View Flu Map
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Regional Forecast for St. Charles
This Afternoon
chancesnow Snow. Additional snow accumulation around 1 inch. Near steady temperature in the lower 30s. South wind 10 to 15 mph. Chance of snow near 100 percent.
Tonight
nt_snow Snow in the evening...then scattered snow showers and patchy freezing drizzle after midnight. Snow accumulation of 2 to 3 inches. Total snow accumulation 3 to 4 inches. Low around 30. Temperature steady or slowly rising after midnight. South wind around 10 mph. Chance of measurable precipitation near 100 percent.
Tuesday
cloudy Mostly cloudy in the morning then becoming partly cloudy. High around 40. West wind around 10 mph.
Tuesday Night
nt_partlycloudy Partly cloudy. Low in the upper 20s. Light wind.
Wednesday
rain Mostly cloudy. Rain likely in the afternoon. High in the mid 40s. Southeast wind around 10 mph. Chance of rain 60 percent.
Wednesday Night
nt_rain Mostly cloudy. Rain likely in the evening... then chance of rain after midnight. Low around 40. Chance of rain 70 percent.
Thursday
partlysunny Partly sunny. High in the upper 40s.
Thursday Night
nt_partlycloudy Colder. Partly cloudy. Low around 30.
Friday and Friday Night
nt_sunny Mostly clear. High in the mid 40s. Low around 30.
Saturday through Sunday
partlycloudy Partly cloudy. High around 50. Low around 30.
Source: NWS at 12:21 PM CST on February 13, 2012
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Nowcast
Winter Weather Advisory in effect until midnight CST tonight...
Forecast
View Calendar 7-Day Weather Forecast for 63341
Monday, 13
Snow
32 | 29 °F
Snow
Chance of
Precipitation
100%
Tuesday, 14
Partly Cloudy
41 | 27 °F
Partly Cloudy
Chance of
Precipitation
10%
Wednesday, 15
Chance of Snow
45 | 40 °F
Chance of Snow
Chance of
Precipitation
60%
Thursday, 16
Chance of Rain
47 | 29 °F
Chance of Rain
Chance of
Precipitation
20%
Friday, 17
Partly Cloudy
45 | 27 °F
Partly Cloudy
Chance of
Precipitation
10%
Saturday, 18
Partly Cloudy
49 | 29 °F
Partly Cloudy
Chance of
Precipitation
10%
Sunday, 19
Partly Cloudy
49 | NA
Partly Cloudy
Chance of
Precipitation
10%
Source: NWS at 12:21 PM CST on February 13, 2012
Regional Forecast for St. Charles
This Afternoon
chancesnow Snow. Additional snow accumulation around 1 inch. Near steady temperature in the lower 30s. South wind 10 to 15 mph. Chance of snow near 100 percent.
Tonight
nt_snow Snow in the evening...then scattered snow showers and patchy freezing drizzle after midnight. Snow accumulation of 2 to 3 inches. Total snow accumulation 3 to 4 inches. Low around 30. Temperature steady or slowly rising after midnight. South wind around 10 mph. Chance of measurable precipitation near 100 percent.
Hourly Forecast 6AM 12 Noon 6PM 12 Midnight
Temp. | Dew Point 25 | 11 31 | 22 31 | 27 29 | 29
Wind 5 mph South 11 mph South 8 mph South 6 mph South
Humidity 56% 69% 88% 95%
Chance of Precip. 10% 100% 100% 100%
Cloud Cover 92% 100% 100% 100%
Conditions Chance of Snow Snow Snow Ice Pellets
Sunrise & Sunset
6:57 AM
5:38 PM
Source: NWS at 12:21 PM CST on February 13, 2012
Regional Forecast for St. Charles
Tuesday
cloudy Mostly cloudy in the morning then becoming partly cloudy. High around 40. West wind around 10 mph.
Tuesday Night
nt_partlycloudy Partly cloudy. Low in the upper 20s. Light wind.
Hourly Forecast 6AM 12 Noon 6PM 12 Midnight
Temp. | Dew Point 29 | 29 38 | 31 38 | 31 31 | 27
Wind 5 mph SW 6 mph West 4 mph West 2 mph SSW
Humidity 95% 75% 75% 81%
Chance of Precip. 100% 10% 10% 0%
Cloud Cover 100% 60% 27% 42%
Conditions Overcast Partly Cloudy Partly Cloudy Partly Cloudy
Sunrise & Sunset
6:55 AM
5:39 PM
Source: NWS at 12:21 PM CST on February 13, 2012
Regional Forecast for St. Charles
Wednesday
rain Mostly cloudy. Rain likely in the afternoon. High in the mid 40s. Southeast wind around 10 mph. Chance of rain 60 percent.
Wednesday Night
nt_rain Mostly cloudy. Rain likely in the evening... then chance of rain after midnight. Low around 40. Chance of rain 70 percent.
Hourly Forecast 6AM 12 Noon 6PM 12 Midnight
Temp. | Dew Point 29 | 27 40 | 36 43 | 38 41 | 40
Wind 2 mph South 6 mph SSE 5 mph SE 4 mph South
Humidity 92% 85% 82% 92%
Chance of Precip. 0% 60% 60% 70%
Cloud Cover 73% 98% 100% 89%
Conditions Chance of Snow Rain Rain Chance of Rain
Sunrise & Sunset
6:54 AM
5:40 PM
Source: NWS at 12:21 PM CST on February 13, 2012
Regional Forecast for St. Charles
Thursday
partlysunny Partly sunny. High in the upper 40s.
Thursday Night
nt_partlycloudy Colder. Partly cloudy. Low around 30.
Hourly Forecast 6AM 12 Noon 6PM 12 Midnight
Temp. | Dew Point 40 | 38 45 | 36 43 | 34 36 | 29
Wind 5 mph WSW 11 mph West 8 mph West 6 mph WNW
Humidity 92% 70% 70% 78%
Chance of Precip. 70% 20% 20% 10%
Cloud Cover 64% 58% 47% 38%
Conditions Chance of Rain Chance of Rain Partly Cloudy Partly Cloudy
Sunrise & Sunset
6:53 AM
5:41 PM
Source: NWS at 12:21 PM CST on February 13, 2012
Regional Forecast for St. Charles
Friday and Friday Night
nt_sunny Mostly clear. High in the mid 40s. Low around 30.
Hourly Forecast 6AM 12 Noon 6PM 12 Midnight
Temp. | Dew Point 31 | 25 41 | 25 40 | 27 34 | 25
Wind 6 mph West 7 mph WNW 6 mph WNW 2 mph West
Humidity 77% 52% 57% 72%
Chance of Precip. 10% 10% 10% 0%
Cloud Cover 39% 28% 26% 24%
Conditions Partly Cloudy Partly Cloudy Partly Cloudy Clear
Sunrise & Sunset
6:52 AM
5:42 PM
Source: NWS at 12:21 PM CST on February 13, 2012
Regional Forecast for St. Charles
Saturday through Sunday
partlycloudy Partly cloudy. High around 50. Low around 30.
Hourly Forecast 6AM 12 Noon 6PM 12 Midnight
Temp. | Dew Point 29 | 23 43 | 29 43 | 31 36 | 29
Wind 2 mph WSW 5 mph West 2 mph WSW 4 mph West
Humidity 77% 57% 60% 75%
Chance of Precip. 0% 10% 10% 10%
Cloud Cover 32% 25% 33% 35%
Conditions Partly Cloudy Clear Partly Cloudy Partly Cloudy
Sunrise & Sunset
6:52 AM
5:42 PM
Source: NWS at 12:21 PM CST on February 13, 2012
Regional Forecast for St. Charles
Saturday through Sunday
partlycloudy Partly cloudy. High around 50. Low around 30.
Hourly Forecast 6AM 12 Noon 6PM 12 Midnight
Temp. | Dew Point 32 | 27 45 | 29 43 | 31 36 | 29
Wind 2 mph West 5 mph SSW 2 mph WSW 4 mph West
Humidity 77% 55% 60% 75%
Chance of Precip. 10% 10% 10% 10%
Cloud Cover 35% 34% 33% 35%
Conditions Partly Cloudy Partly Cloudy Partly Cloudy Partly Cloudy
Sunrise & Sunset
6:52 AM
5:42 PM
BestForecast (what's this?)
Nearby
History & Almanac
February 13, 2012 Max Temp Min Temp
Normal (KSTL) 44 °F 26 °F
Record (KSTL) 83 °F (1962) -18 °F (1905)
Yesterday 38 °F 16 °F
Yesterday's Heating Degree Days: 38
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Earthquake Activity
City Distance Mag. Time & Date
No recent earthquake activity has been reported nearby.
Minimum magnitude displayed is 2.5.
Astronomy
Feb. 13, 2012 Rise Set
Actual Time 6:57 AM CST 5:38 PM CST
Civil Twilight 6:29 AM CST 6:05 PM CST
Nautical Twilight 5:58 AM CST 6:36 PM CST
Astronomical Twilight 5:27 AM CST 7:07 PM CST
Moon No Moon Rise 10:01 AM CST
Length Of Visible Light 11h 35m
Length of Day
10h 41m
Tomorrow will be 2m 19s longer.
Waning Gibbous, 60% of the Moon is Illuminated
Today
Waning Gibbous
Feb 14
Last Quarter
Feb 21
New
Feb 29
First Quarter
Mar 8
Full
Today's Extremes
State Highs State Lows
36 °F
Joplin
35 °F
Sedalia
35 °F
Clinton
21 °F
Farmington
24 °F
West Plains
Source: NWS
Snow Depth
Station Depth Elevation
No new snow has been reported.
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Ice moving through on the Danube river
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Travel & Activities
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Aviation
City Temp. Conditions Updated
Spirit of St Louis 32 °F Light Snow 2:54 PM CST
St. Louis 34 °F Light Snow 2:55 PM CST
St. Charles 32 °F Light Snow 2:54 PM CST
Cahokia 32 °F Light Snow 2:53 PM CST
Flight To ETA Status
SWA340
Dallas, TX
KSTL 01:05PM On Time
KAP610
Cape Girardeau, MO
KSTL 02:16PM On Time
SWA2740
Fort Lauderdale, FL
KSTL 02:36PM On Time
SCX8888
Montego Bay
KSTL 02:43PM On Time
Flight Tracker by FlightAware FlightAware
Type Condition
Flight Rule: IFR (KSUS)
Wind Speed: 9.0 kts.
Wind Dir: 149° (SSE)
Ceiling: 2500 ft

METAR KSUS 132054Z 17009G14KT 1 3/4SM R08R/5500VP6000FT -SN SCT013 SCT018 OVC025 00/M03 A2996 RMK AO2 SLP154 P0000 60001 T00001028 56032

Nearby Events
Event Date Forecast
Breeze Park Alzheimer's Family Night: Caregiver Self Help 6:00 PM CST 2012-02-15 Rain, 50°F
Breeze Park Alzheimer's Family Night: Caregiver Self Help 6:00 PM CST 2012-02-18 Partly Cloudy, 45°F
Event data courtesy eviesays.com
Sports
Event Date Forecast
Budweiser Shootout 8:29 PM EST on February 18, 2012 Chance of Rain, 65 °F
Gatorade Duel 1 2:19 PM EST on February 23, 2012 Average High 70° F/ 21° C
Event Date Forecast
Northern Trust Open 8:30 AM PST on February 16, 2012 Partly Cloudy, 65 °F
Northern Trust Open 8:30 AM PST on February 17, 2012 Clear, 65 °F
BMW Championship 8:30 AM CDT on September 06, 2012 Average High 85° F/ 29° C
BMW Championship 8:30 AM CDT on September 07, 2012 Average High 85° F/ 29° C
Weather Stations
Station Location Temp. Windchill Dew Point Humidity Wind Precipitation Elevation Updated Type Website
Indian Ridge Farms, Defiance, MO 31.3 °F 31 °F 28 °F 88% SSE  at  2.0 mph 0.00 in / hr 742 ft 2:49 PM CST Normal  
Kohler's Grove, Defiance, MO 30.7 °F 31 °F 28 °F 89% SSW  at  1.0 mph - / hr 588 ft 3:01 PM CST Normal  
Lake Saint Louis, Lake Saint Louis, MO 31.9 °F 26 °F 29 °F 90% South  at  6.0 mph 0.00 in / hr 640 ft 2:59 PM CST Normal  
Stone Meadows, Wentzville, MO 32.0 °F 27 °F 25 °F 74% SE  at  4.6 mph 0.00 in / hr 600 ft 3:01 PM CST Rapid Fire  
Twin Chimneys, O'Fallon, MO 31.3 °F 31 °F 29 °F 90% ESE  at  3.0 mph 0.00 in / hr 590 ft 3:00 PM CST Normal  
Ridgepointe, Lake Saint Louis, MO 32.9 °F 33 °F 29 °F 87% North  at  0.0 mph 0.00 in / hr 580 ft 2:56 PM CST Normal  
Pennial Park, O'Fallon, MO 32.5 °F 25 °F 27 °F 80% SSW  at  9.0 mph 0.00 in / hr 518 ft 3:00 PM CST Normal
Winding Trails, Ballwin, MO 31.5 °F 32 °F 29 °F 89% SE  at  2.0 mph 0.00 in / hr 720 ft 2:54 PM CST Normal  
O'fallon / St. Peters, St. Peters, MO 32.5 °F 32 °F 29 °F 88% SSW  at  0.0 mph 0.00 in / hr 500 ft 3:01 PM CST Rapid Fire
Highland Estates, Wentzville, MO 31.4 °F 27 °F 30 °F 93% South  at  4.0 mph 0.00 in / hr 548 ft 3:00 PM CST Normal  
APRSWXNET Wildwood MO , Eureka, MO 30 °F 25 °F 28 °F 93% SE  at  5 mph 0.00 in / hr 721 ft 2:22 PM CST MADIS
Washington, Washington, MO 31.3 °F 28 °F 26 °F 81% SSE  at  3.8 mph 0.00 in / hr 564 ft 3:01 PM CST Rapid Fire  
Old Town, Pacific, MO 30.8 °F 31 °F 28 °F 88% South  at  3.0 mph 0.00 in / hr 495 ft 3:00 PM CST Normal  
Royal Oaks, O'Fallon, MO 31.4 °F 21 °F 29 °F 92% SSE  at  14.0 mph 0.00 in / hr 593 ft 3:01 PM CST Rapid Fire
Harvester, St. Charles, MO 32.7 °F 33 °F 30 °F 88% SE  at  3.0 mph 0.00 in / hr 558 ft 2:48 PM CST Normal
HADS MERAMEC RIVER NEAR PACIFIC MO, Pacific, MO - - - - North  at  - 0.01 in / hr 680 ft 2:00 PM CST MADIS
Settlers Pointe, Wentzville, MO 31.3 °F 26 °F 30 °F 93% SSE  at  5.0 mph 0.00 in / hr 536 ft 3:00 PM CST Normal  
Westglen Village, Ballwin, MO 31.2 °F 25 °F 28 °F 86% SSE  at  7.0 mph 0.01 in / hr 680 ft 3:01 PM CST Rapid Fire  
APRSWXNET Saint Peters M, Saint Peters, MO 31 °F 31 °F 26 °F 80% SE  at  1 mph 0.00 in / hr 511 ft 2:30 PM CST MADIS
Danielle Downs, St. Peters, MO 24.8 °F 25 °F 6 °F 44% NNW  at  2.2 mph 0.00 in / hr 561 ft 3:01 PM CST Rapid Fire  
Lake Cattails, Pacific, MO 32.4 °F 32 °F 27 °F 80% SE  at  0.0 mph 0.00 in / hr 574 ft 3:01 PM CST Rapid Fire  
West Drive, St. Peters, MO 31.6 °F 32 °F 28 °F 86% WSW  at  3.0 mph 0.01 in / hr 560 ft 3:01 PM CST Rapid Fire
Wright City, MO 33.3 °F 33 °F 26 °F 76% SSE  at  0.0 mph 0.00 in / hr 868 ft 2:30 PM CST Normal  
HADS CREVE COEUR CREEK AT CHESTERFIEL MO, Chesterfield, MO - - - - North  at  - 0.00 in / hr 500 ft 2:00 PM CST MADIS
Incline Village, Foristell, MO 30.6 °F 23 °F 29 °F 92% South  at  8.0 mph 0.01 in / hr 596 ft 3:01 PM CST Rapid Fire
HADS MERAMEC RIVER NEAR EUREKA 2E MO, Eureka, MO - - - - North  at  - 0.00 in / hr 405 ft 2:00 PM CST MADIS
APRSWXNET St. Louis MO , Chesterfield, MO 31 °F 26 °F 26 °F 83% SE  at  5 mph 0.00 in / hr 542 ft 2:30 PM CST MADIS
Chesterfield (East), Chesterfield, MO 31.1 °F 27 °F 27 °F 86% SSW  at  4.0 mph 0.00 in / hr 530 ft 3:01 PM CST Normal
Laura Court, Union, MO 31.2 °F 31 °F 29 °F 91% SSE  at  0.0 mph 0.00 in / hr 650 ft 3:01 PM CST Rapid Fire  
Grandview Farms, Union, MO 31.2 °F 23 °F 29 °F 92% SE  at  10.0 mph 0.00 in / hr 665 ft 3:01 PM CST Rapid Fire
Saint Charles Hills, Saint Charles, MO 32.7 °F 26 °F 26 °F 76% SSE  at  8.1 mph 0.00 in / hr 475 ft 3:01 PM CST Rapid Fire
HADS BOURBEUSE RIVER AT UNION MO, Union, MO - - - - North  at  - 0.00 in / hr 540 ft 2:00 PM CST MADIS
Fence Post Weather, Warrenton, MO 30.0 °F 26 °F 27 °F 89% SE  at  4.0 mph 0.00 in / hr 850 ft 12:30 PM CST Normal  
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Winter Weather Advisory
Mobile & Email Alerts Statement as of 3:30 AM CST on February 13, 2012

... Winter Weather Advisory remains in effect from 9 am this
morning to midnight CST tonight...

* timing... snow will begin during the mid-morning hours and
persist through much of the evening. The heaviest snowfall is
expected to occur during the late afternoon and early evening
hours.

* Accumulations... snowfall accumulations of 2 to 4 inches are
anticipated.

* Winds... southerly winds at 10 to 15 mph with gusts to around
20 mph.

* Impacts... the heaviest snowfall is expected to occur during the
late afternoon and early evening commute resulting in hazardous
driving conditions.

Precautionary/preparedness actions...

A Winter Weather Advisory is issued for a variety of winter
weather conditions... such as snow... blowing snow... sleet... or
freezing drizzle and rain. It only takes a small amount of wintry
precipitation to make roads... bridges... sidewalks... and parking
lots icy and dangerous. It is often difficult to tell when ice
begins to form... so do not be caught off guard.