Sunnyvale, TX

6:35 AM CST on February 13, 2012 (GMT -0600)
Elev: 459 ft
Lon: 96.6° W
Lat: 32.8° N
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Tropical Weather: Tropical Cyclone Giovanna (South Indian Ocean) Tropical Cyclone Jasmine (Southern Pacific)
Weather Summary
Jessica Parker
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.
Weather Underground Broadcast Network
Sunnyvale Weather at a Glance
Updated 6:34 AM CST
Elevation
500 ft
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Now
Overcast
Overcast
Temperature
35.8 °F
Feels Like 31 °F
Wind(mph)
6.0
Sunrise / Set
7:11 AM
6:09 PM
Moon
Waning Gibbous
Today
Thunderstorm 45 °F
T-storms
70% chance of precipitation
Tonight
Partly Cloudy 38 °F
Partly Cloudy
Tomorrow
Partly Cloudy 61 | 52 °F
Partly Cloudy
Wednesday
Chance of a Thunderstorm 70 | 41 °F
Chance of T-storms
40% chance of precipitation
Thursday
Partly Cloudy 56 | 38 °F
Partly Cloudy
Friday
Partly Cloudy 59 | 41 °F
Partly Cloudy
Today is forecast to be Warmer than yesterday.
Conditions
Pressure
30.09 in
Visibility
10.0 miles
Clouds
Overcast 2300 ft
Moisture
Humidity
82%
Rainfall
0.02 in
Snow Depth
Not available.
METAR
METAR KHQZ 131235Z AUTO 13009KT 10SM OVC023 01/00 A3011 RMK AO1
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Weather Radio
Launch Weather Radio
Temperature
Windchill
31 °F
Dew Point
31 °F
Wind
Speed / Dir
6.0 mph from South
Wind Gust
13.0 mph
Health
UV
0 out of 16
Pollen
1.90 out of 12
Pollen Forecast
Ozone
Good
PM2.5
Good
Flu Activity
Regional
View Flu Map
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Regional Forecast for Dallas
Today
snow Rain...snow and light sleet in the morning...then a chance of showers and perhaps an isolated thunderstorm in the afternoon. No snow and sleet accumulation. Highs in the mid 40s. South winds 10 to 15 mph. Chance of precipitation 90 percent.
Tonight
nt_partlycloudy Partly cloudy. Lows in the upper 30s. South winds 5 to 10 mph becoming west after midnight.
Tuesday
partlycloudy Mostly sunny. Not as cool. Highs around 60. North winds around 5 mph becoming east in the afternoon.
Tuesday Night
nt_chancerain Mostly cloudy. A 30 percent chance of showers after midnight. Not as cool. Lows in the lower 50s. Southeast winds 10 to 15 mph.
Wednesday
chancerain Mostly cloudy with a 40 percent chance of showers and thunderstorms. Highs in the upper 60s. South winds around 15 mph shifting to the west by noon.
Wednesday Night and Thursday
nt_partlycloudy Partly cloudy. Lows in the lower 40s. Highs in the lower 60s.
Thursday Night through Friday Night
partlycloudy Partly cloudy. Lows around 40. Highs in the lower 60s.
Saturday
partlysunny Partly sunny with a 20 percent chance of showers and thunderstorms. Highs in the lower 60s.
Saturday Night
nt_cloudy Mostly cloudy in the evening then becoming partly cloudy. Lows in the lower 40s.
Sunday
partlycloudy Mostly sunny. Highs in the mid 60s.
Source: NWS at 4:37 am CST on February 13, 2012
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Nowcast as of 5:20 am CST on February 13, 2012
Areas of light to occasionally moderate rain will continue across North Texas through 7 am. The rain will occasionally mix with light sleet and light snow mainly north of Interstate 20. No additional accumulations of sleet or snow are expected. Temperatures will remain above freezing in most locations through the 7 am. However...a few locations northwest of a Gainesville...Mineral Wells to Comanche line will remain at 32 degrees through 7 am and a few slick spots will be possible on bridges and overpasses. Temperatures will continue to slowly warm through the morning and all winter precipitation will end before midday. Showers and isolated thunderstorms will be possible this afternoon as an upper level disturbances moves east across the region.
Forecast
View Calendar 7-Day Weather Forecast for 75182
Monday, 13
Thunderstorm
45 | 38 °F
T-storms
Chance of
Precipitation
70%
Tuesday, 14
Partly Cloudy
61 | 52 °F
Partly Cloudy
Chance of
Precipitation
0%
Wednesday, 15
Chance of a Thunderstorm
70 | 41 °F
Chance of T-storms
Chance of
Precipitation
40%
Thursday, 16
Partly Cloudy
56 | 38 °F
Partly Cloudy
Chance of
Precipitation
10%
Friday, 17
Partly Cloudy
59 | 41 °F
Partly Cloudy
Chance of
Precipitation
10%
Saturday, 18
Chance of a Thunderstorm
61 | 47 °F
Chance of T-storms
Chance of
Precipitation
20%
Sunday, 19
Mostly Cloudy
67 | NA
Mostly Cloudy
Chance of
Precipitation
10%
Source: NWS at 4:37 am CST on February 13, 2012
Regional Forecast for Dallas
Today
snow Rain...snow and light sleet in the morning...then a chance of showers and perhaps an isolated thunderstorm in the afternoon. No snow and sleet accumulation. Highs in the mid 40s. South winds 10 to 15 mph. Chance of precipitation 90 percent.
Tonight
nt_partlycloudy Partly cloudy. Lows in the upper 30s. South winds 5 to 10 mph becoming west after midnight.
Hourly Forecast 6AM 12 Noon 6PM 12 Midnight
Temp. | Dew Point 36 | 31 38 | 36 45 | 41 40 | 38
Wind 13 mph SSE 9 mph South 8 mph South 2 mph SSE
Humidity 78% 88% 85% 92%
Chance of Precip. 70% 70% 70% 10%
Cloud Cover 100% 100% 68% 38%
Conditions Thunderstorm Thunderstorm Partly Cloudy Partly Cloudy
Sunrise & Sunset
7:11 AM
6:09 PM
Source: NWS at 4:37 am CST on February 13, 2012
Regional Forecast for Dallas
Tuesday
partlycloudy Mostly sunny. Not as cool. Highs around 60. North winds around 5 mph becoming east in the afternoon.
Tuesday Night
nt_chancerain Mostly cloudy. A 30 percent chance of showers after midnight. Not as cool. Lows in the lower 50s. Southeast winds 10 to 15 mph.
Hourly Forecast 6AM 12 Noon 6PM 12 Midnight
Temp. | Dew Point 40 | 36 58 | 41 61 | 43 52 | 47
Wind 1 mph NNE 2 mph East 5 mph East 6 mph SE
Humidity 85% 52% 49% 83%
Chance of Precip. 10% 10% 10% 20%
Cloud Cover 25% 25% 42% 85%
Conditions Clear Clear Partly Cloudy Chance of a Thunderstorm
Sunrise & Sunset
7:10 AM
6:10 PM
Source: NWS at 4:37 am CST on February 13, 2012
Regional Forecast for Dallas
Wednesday
chancerain Mostly cloudy with a 40 percent chance of showers and thunderstorms. Highs in the upper 60s. South winds around 15 mph shifting to the west by noon.
Wednesday Night and Thursday
nt_partlycloudy Partly cloudy. Lows in the lower 40s. Highs in the lower 60s.
Hourly Forecast 6AM 12 Noon 6PM 12 Midnight
Temp. | Dew Point 52 | 52 61 | 54 70 | 47 49 | 40
Wind 6 mph SSE 7 mph South 1 mph WSW 5 mph NW
Humidity 99% 75% 45% 73%
Chance of Precip. 20% 40% 40% 20%
Cloud Cover 100% 87% 58% 49%
Conditions Chance of a Thunderstorm Chance of a Thunderstorm Chance of Rain Partly Cloudy
Sunrise & Sunset
7:09 AM
6:11 PM
Source: NWS at 4:37 am CST on February 13, 2012
Regional Forecast for Dallas
Wednesday Night and Thursday
nt_partlycloudy Partly cloudy. Lows in the lower 40s. Highs in the lower 60s.
Thursday Night through Friday Night
partlycloudy Partly cloudy. Lows around 40. Highs in the lower 60s.
Hourly Forecast 6AM 12 Noon 6PM 12 Midnight
Temp. | Dew Point 45 | 36 54 | 36 56 | 34 41 | 34
Wind 13 mph NNW 11 mph NNW 6 mph North 4 mph North
Humidity 70% 50% 43% 76%
Chance of Precip. 20% 10% 10% 10%
Cloud Cover 30% 30% 30% 30%
Conditions Partly Cloudy Partly Cloudy Partly Cloudy Partly Cloudy
Sunrise & Sunset
7:08 AM
6:12 PM
Source: NWS at 4:37 am CST on February 13, 2012
Regional Forecast for Dallas
Thursday Night through Friday Night
partlycloudy Partly cloudy. Lows around 40. Highs in the lower 60s.
Hourly Forecast 6AM 12 Noon 6PM 12 Midnight
Temp. | Dew Point 38 | 34 50 | 34 58 | 32 45 | 36
Wind 4 mph North 6 mph NNW 6 mph ESE 5 mph SSE
Humidity 81% 52% 38% 70%
Chance of Precip. 10% 10% 10% 10%
Cloud Cover 30% 30% 30% 35%
Conditions Partly Cloudy Partly Cloudy Partly Cloudy Partly Cloudy
Sunrise & Sunset
7:07 AM
6:13 PM
Source: NWS at 4:37 am CST on February 13, 2012
Regional Forecast for Dallas
Saturday
partlysunny Partly sunny with a 20 percent chance of showers and thunderstorms. Highs in the lower 60s.
Saturday Night
nt_cloudy Mostly cloudy in the evening then becoming partly cloudy. Lows in the lower 40s.
Hourly Forecast 6AM 12 Noon 6PM 12 Midnight
Temp. | Dew Point 43 | 36 54 | 38 58 | 38 49 | 40
Wind 4 mph SSE 7 mph SE 6 mph SE 5 mph ESE
Humidity 72% 56% 45% 74%
Chance of Precip. 10% 20% 20% 20%
Cloud Cover 51% 81% 79% 86%
Conditions Chance of a Thunderstorm Chance of a Thunderstorm Chance of a Thunderstorm Chance of a Thunderstorm
Sunrise & Sunset
7:07 AM
6:13 PM
Source: NWS at 4:37 am CST on February 13, 2012
Regional Forecast for Dallas
Sunday
partlycloudy Mostly sunny. Highs in the mid 60s.
Hourly Forecast 6AM 12 Noon 6PM 12 Midnight
Temp. | Dew Point 49 | 40 59 | 41 58 | 38 49 | 40
Wind 6 mph NNE 8 mph SSE 6 mph SE 5 mph ESE
Humidity 73% 51% 45% 74%
Chance of Precip. 20% 10% 20% 20%
Cloud Cover 91% 81% 79% 86%
Conditions Overcast Mostly Cloudy Chance of a Thunderstorm Chance of a Thunderstorm
Sunrise & Sunset
7:07 AM
6:13 PM
BestForecast (what's this?)
Scientific Forecaster Discussion — MOS Weather Graph
Nearby
Active Notice: Record Report  (US Severe Weather)
History & Almanac
February 13, 2012 Max Temp Min Temp
Normal (KDFW) 60 °F 38 °F
Record (KDFW) 84 °F (1918) 1 °F (1905)
Yesterday 42 °F 25 °F
Yesterday's Heating Degree Days: 31
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
OZONE
Yesterday Good
PM2.5
Current Good
OZONE
Current Good
PM2.5
Monday Good
OZONE
Monday Good
PM10
Tuesday Good
OZONE
Tuesday Good
PM10
Astronomy
Feb. 13, 2012 Rise Set
Actual Time 7:11 AM CST 6:09 PM CST
Civil Twilight 6:46 AM CST 6:34 PM CST
Nautical Twilight 6:17 AM CST 7:03 PM CST
Astronomical Twilight 5:48 AM CST 7:32 PM CST
Moon No Moon Rise 10:36 AM CST
Length Of Visible Light 11h 48m
Length of Day
10h 57m
Tomorrow will be 1m 50s longer.
Waning Gibbous, 64% 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
66 °F
North Padre Island
64 °F
Brownsville
64 °F
Port Isabel
62 °F
Port Aransas
62 °F
Ingleside
21 °F
Amarillo
23 °F
Pampa
23 °F
Dalhart
24 °F
Hereford
26 °F
Lubbock
Source: NWS
Snow Depth
Station Depth Elevation
No new snow has been reported.
Snow Depth Reports — Snow Depth Map
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Aviation
City Temp. Conditions Updated
Mesquite 34 °F Overcast 6:35 AM CST
Lancaster 34 °F Overcast 6:35 AM CST
Terrell 35 °F Overcast 5:53 AM CST
Dallas Love 36 °F Overcast 5:53 AM CST
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Flight To ETA Status
SWA1997
Austin, TX 		KDAL 06:42AM On Time
SWA709
San Antonio, TX 		KDAL 06:42AM On Time
SWA1636
Houston, TX 		KDAL 06:58AM On Time
SWA828
Tulsa, OK 		KDAL 07:03AM On Time
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Type Condition
Flight Rule: MVFR (KHQZ)
Wind Speed: 9.0 kts.
Wind Dir: 169° (South)
Ceiling: 2300 ft

METAR KHQZ 131235Z AUTO 13009KT 10SM OVC023 01/00 A3011 RMK AO1

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Nearby Events
Event Date Forecast
Realtor Happy Hour in Buffalo Creek 4:00 PM CST 2012-02-15 Chance of a Thunderstorm, 63°F
Karaoke with Bill 8:00 PM CST 2012-02-16 Clear, 45°F
The Garland Symphony Orchestra Presents: \"O Romeo, Romeo...\" 8:00 PM CST 2012-02-17 Clear, 51°F
Rowlett HS Madrigal Dinner 6:00 PM CST 2012-02-17 Clear, 52°F
Karol Dyess And Friends 6:00 PM CST 2012-02-18 Mostly Cloudy, 55°F
Event data courtesy eviesays.com
Sports
Event Date Forecast
Budweiser Shootout 8:29 PM EST on February 18, 2012 Partly Cloudy, 59 °F
Gatorade Duel 1 2:19 PM EST on February 23, 2012 Average High 70° F/ 21° C
Samsung Mobile 500 6:46 PM CDT on April 14, 2012 Average High 72° F/ 22° C
AAA Texas 500 2:16 PM CST on November 04, 2012 Average High 66° F/ 18° C
Event Date Forecast
Northern Trust Open 8:30 AM PST on February 16, 2012 Clear, 63 °F
Northern Trust Open 8:30 AM PST on February 17, 2012 Clear, 63 °F
HP Byron Nelson Championship 8:30 AM CDT on May 17, 2012 Average High 82° F/ 27° C
HP Byron Nelson Championship 8:30 AM CDT on May 18, 2012 Average High 82° F/ 27° C
View all Sports Weather
Weather Stations
Station Location Temp. Windchill Dew Point Humidity Wind Precipitation Elevation Updated Type Website
MISD Learning Center, Mesquite, TX 35.8 °F 31 °F 31 °F 82% South  at  6.0 mph 0.00 in / hr 500 ft 6:34 AM CST Rapid Fire
Mesquite (Near Thompson Elementary), Mesquite, TX 35.4 °F 32 °F 31 °F 83% SE  at  4.2 mph 0.00 in / hr 483 ft 6:35 AM CST Rapid Fire
Bruton and 635, Mesquite, TX 35.9 °F 32 °F 33 °F 88% SE  at  5.0 mph 0.00 in / hr 476 ft 6:35 AM CST Normal  
Heathen One, Heath, TX 35.7 °F 31 °F 31 °F 84% ESE  at  6.0 mph 0.01 in / hr 500 ft 6:23 AM CST Normal
APRSWXNET Heath TX , Heath, TX 36 °F 28 °F 33 °F 87% NNE  at  11 mph 0.00 in / hr 509 ft 5:59 AM CST MADIS
FM1140, Heath, TX 35.7 °F 36 °F 32 °F 87% SSE  at  3.0 mph 0.00 in / hr 475 ft 6:35 AM CST Rapid Fire
North Mesquite, Mesquite, TX 36.3 °F 33 °F 32 °F 83% SE  at  4.0 mph 0.01 in / hr 548 ft 6:35 AM CST Rapid Fire
Spinnaker Pointe, Rowlett, TX 36.9 °F 34 °F 32 °F 84% SSW  at  4.0 mph 0.00 in / hr 457 ft 6:35 AM CST Rapid Fire
Westshore Estates, Garland, TX 36.4 °F 30 °F 32 °F 84% SSE  at  9.0 mph 0.03 in / hr 439 ft 6:35 AM CST Rapid Fire
Rabbit Ridge, Heath, TX 35.4 °F 26 °F 35 °F 98% SSE  at  16.1 mph 0.00 in / hr 531 ft 6:35 AM CST Rapid Fire
Near White Rock Lake (South), Dallas, TX 35.8 °F 36 °F 31 °F 83% SW  at  0.0 mph 0.00 in / hr 495 ft 6:34 AM CST Normal
Willowcrest Estates, Rockwall, TX 35.2 °F 27 °F 30 °F 82% SE  at  11.0 mph 0.00 in / hr 550 ft 6:35 AM CST Rapid Fire  
Rowlett - Springfield Lakes, Rowlett, TX 36.9 °F 30 °F 21 °F 53% SSE  at  10.1 mph 0.04 in / hr 450 ft 6:35 AM CST Normal
Lakewood Pointe, Rowlett, TX 36.3 °F 31 °F 22 °F 56% SE  at  6.3 mph 0.00 in / hr 0 ft 6:35 AM CST Normal  
Town Bluff, Garland, TX 36.5 °F 32 °F 31 °F 80% SSE  at  5.1 mph 0.01 in / hr 504 ft 6:35 AM CST Rapid Fire  
SHOREHAVEN, Garland, TX 36.7 °F 32 °F 27 °F 68% SSE  at  5.8 mph 0.04 in / hr 550 ft 6:35 AM CST Rapid Fire  
Ravens Nest Subdivision, Rowlett, TX 37.0 °F 33 °F 32 °F 83% ESE  at  5.0 mph 0.01 in / hr 544 ft 6:34 AM CST Normal
Corinthian Sailing Club, Whiterock Lake, Dallas, TX 36.0 °F 30 °F - - SE  at  8.0 mph - / hr 500 ft 6:35 AM CST Normal  
Sparkie' s WX, Talty, TX 35.2 °F 28 °F 32 °F 87% SE  at  8.5 mph 0.00 in / hr 449 ft 6:35 AM CST Rapid Fire  
HADS EAST FORK TRINITY RIVER NEAR CRA TX, Crandall, TX - - - - North  at  - 0.01 in / hr 344 ft 5:00 AM CST MADIS
Valley Creek Estates, Garland, TX 36.5 °F 34 °F 21 °F 53% NNW  at  3.1 mph 0.00 in / hr 512 ft 6:35 AM CST Rapid Fire  
White Rock Valley / Lake Highlands, Dallas, TX 35.3 °F 31 °F 31 °F 83% ESE  at  5.0 mph - / hr 541 ft 6:32 AM CST Normal  
Western Heights, Garland, TX 37.5 °F 38 °F 31 °F 76% East  at  2.3 mph 0.00 in / hr 520 ft 6:35 AM CST Normal  
Lakewood/West_White_Rock_Lake, Dallas, TX 36.5 °F 36 °F 32 °F 85% East  at  1.0 mph 0.00 in / hr 400 ft 6:35 AM CST Normal  
APRSWXNET Dallas TX , Dallas, TX 35 °F 35 °F 30 °F 83% SSE  at  2 mph 0.00 in / hr 600 ft 6:10 AM CST MADIS
TX Weather Instrumt Bldg I635/Skillman, Dallas, TX 36.2 °F 31 °F 34 °F 94% SE  at  6.2 mph 0.00 in / hr 470 ft 6:35 AM CST Rapid Fire
Bryan Parkway, Dallas, TX 36.1 °F 32 °F 30 °F 78% South  at  5.0 mph 0.02 in / hr 525 ft 6:35 AM CST Rapid Fire  
East Dallas, Dallas, TX 35.3 °F 35 °F 31 °F 83% East  at  1.0 mph 0.00 in / hr 600 ft 6:35 AM CST Rapid Fire  
Oakridge, Garland, TX 35.2 °F 35 °F 31 °F 85% SE  at  3.0 mph 0.01 in / hr 596 ft 6:35 AM CST Normal  
APRSWXNET Heath TX , Heath, TX 35 °F 29 °F 31 °F 85% ESE  at  7 mph 0.01 in / hr 1640 ft 5:52 AM CST MADIS
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Record Report
Mobile & Email Alerts Statement as of 01:18 am CST on February 13, 2012

... Record daily maximum snowfall tied at Waco...

A record snowfall of a trace of snow was tied at Waco yesterday.
This ties the old records set in 2010... 1963... 1958... 1948... and
1905.



View All U.S. Severe Weather