Weather Summary
Kari Kiefer
Weather Underground Forecast for Wednesday, May 22, 2013.

After an active severe weather pattern during the beginning of the week, cooler and relatively calmer weather conditions will return to much of the Central U.S. on Wednesday as the trough of low pressure impacting the region moves to the East. As the trough progresses, an associated low pressure system will reorganize near southern Lake Michigan and will continue northeastward across Michigan toward the Lower Great Lakes through Wednesday evening. Expect rain showers to continue across the Upper Midwest into areas of the inland Northeast throughout this transition. Meanwhile, the system's associated cold front will trail southwestward from the low across the Ohio and Tennessee Valleys through the Lower Mississippi Valley and into the Southern Plains. Favorable energy and environmental conditions ahead of the cold front combined with ample moisture from the Gulf of Mexico will set the stage for shower and thunderstorm activity through the day. Areas just east of the advancing cold front will experience the heaviest amounts of precipitation, with areas of flooding and flash flooding possible in parts of eastern Texas and Louisiana. As the cold front continues eastward, areas of the Lower Great Lakes into the Ohio and Tennessee Valleys are at slight risk of severe thunderstorm development through the evening. Severe storms in these regions may become capable of producing damaging wind gusts, marginally severe hail, and even a few tornadoes during the evening hours.

Elsewhere, scattered showers and thunderstorms will remain possible along the East Coast and in the Florida Peninsula. Out West, a cold trough of low pressure will become anchored over the Pacific Northwest, bringing cool, below normal temperatures to the Pacific Northwest and California, as well as scattered precipitation to the Northwest.
Weather Underground Forecast for Wednesday, May 22, 2013.

After an active severe weather pattern during the beginning of the week, cooler and relatively calmer weather conditions will return to much of the Central U.S. on Wednesday as the trough of low pressure impacting the region moves to the East. As the trough progresses, an associated low pressure system will reorganize near southern Lake Michigan and will continue northeastward across Michigan toward the Lower Great Lakes through Wednesday evening. Expect rain showers to continue across the Upper Midwest into areas of the inland Northeast throughout this transition. Meanwhile, the system's associated cold front will trail southwestward from the low across the Ohio and Tennessee Valleys through the Lower Mississippi Valley and into the Southern Plains. Favorable energy and environmental conditions ahead of the cold front combined with ample moisture from the Gulf of Mexico will set the stage for shower and thunderstorm activity through the day. Areas just east of the advancing cold front will experience the heaviest amounts of precipitation, with areas of flooding and flash flooding possible in parts of eastern Texas and Louisiana. As the cold front continues eastward, areas of the Lower Great Lakes into the Ohio and Tennessee Valleys are at slight risk of severe thunderstorm development through the evening. Severe storms in these regions may become capable of producing damaging wind gusts, marginally severe hail, and even a few tornadoes during the evening hours.

Elsewhere, scattered showers and thunderstorms will remain possible along the East Coast and in the Florida Peninsula. Out West, a cold trough of low pressure will become anchored over the Pacific Northwest, bringing cool, below normal temperatures to the Pacific Northwest and California, as well as scattered precipitation to the Northwest.
More News Articles
WunderSearch® Canada
Enter a location
  Type your zip code, city, state, airport code or country
Current Location:
 Partly Cloudy
Ashburn, VA – Dulles Airport, Virginia (Airport)
71 °F Partly Cloudy
 Full Conditions & Forecast
Nearby Airports
Dulles Airport | 71 °F | Partly Cloudy
Leesburg | 70 °F | Clear
Gaithersburg | 70 °F | Clear
Manassas | 70 °F | N/A
Wrong location?
Nearby Weather Stations
Ashburn Village | 70.5 °F
Ashburn Village 1 | 69.8 °F
Belmont Country Club | 70.0 °F
Weatherscience.net | 69.2 °F
 
See all Weather Stations | About Weather Stations
Image uploaded by:
 

Weather for Canada

Weather for Canada

As the second largest country in the world, it's easy to see why the weather in Canada is constantly changing and so different from coast to coast. Weather Underground is committed to delivering the most reliable, accurate weather information possible. Our state-of-the-art technology monitors conditions and forecasts for locations across the globe, so you'll always find the weather information that you need. If you're looking for the most reliable Canadian weather forecast, turn to Weather Underground.

How does Weather Underground's forecasts differ from the Weatheroffice and The Weather Network's forecast for Canada? We at Weather Underground have developed the world's largest network of personal weather stations, with over 23,000 stations worldwide. What is a personal weather station you ask? A personal weather station, or PWS, is a small device that records basic weather information, such as wind speed and temperature, and sends that information to our servers on an average of every two seconds.

So how exactly do we calculate Canadian weather forecasts? With our vast network of personalized weather stations and our BestForecast™ system we are able to provide our site users with the most localized weather conditions available. BestForecast™ uses the most innovative forecast models available and verifies their output with each localized data point. With the enormous amount of data we collect, we're able to provide you the most reliable and relevant forecast for your local neighborhood.

Looking for the extended weather forecast for Canada? We can provide you with a local forecast for the next ten days in over 82 languages. Other innovative and fun features on wunderground.com include our WunderPhoto community with over 1.5 million photos uploaded, a worldwide network of web cams, our interactive WunderMap, the most complete historical weather data resource on the internet, and much more. Finally, don't forget to download our iPhone and Android weather apps.

As the second largest country in the world, it's easy to see why the weather in Canada is constantly changing and so different from coast to coast. Weather Underground is committed to delivering the most reliable, accurate weather information possible. Our state-of-the-art technology monitors conditions and forecasts for locations across the globe, so you'll always find the weather information that you need. If you're looking for the most reliable Canadian weather forecast, turn to Weather Underground.

Search Results
Place Alerts Temp. Humidity Pressure Conditions Wind Updated
Armstrong, Ontario   34 °F 87% 29.99 in Cloudy  WNW at 1 mph 2:00 AM EDT Save
Atikokan, Ontario   45 °F 100% 29.91 in Light Drizzle  Calm 2:09 AM CDT Save
Bancroft, Ontario   56 °F 100% 29.80 in Fog  South at 4 mph 3:00 AM EDT Save
Barrie, Ontario   63 °F 88% 29.75 in Overcast  South at 8 mph 3:11 AM EDT Save
Beausoleil, Ontario   31 °F 92% 30.54 in Overcast  NE at 6 mph 2:00 AM EDT Save
Belle River, Ontario   72 °F 73% 29.74 in Mostly Cloudy  SSW at 8 mph 3:00 AM EDT Save
Borden, Ontario   63 °F 88% 29.75 in Overcast  South at 8 mph 3:11 AM EDT Save
Broadview, Saskatchewan   50 °F 59% 30.12 in Partly Cloudy  NE at 4 mph 1:00 AM CST Save
Burlington Piers, Ontario   57 °F 100% 29.76 in Mostly Cloudy  ENE at 8 mph 3:00 AM EDT Save
Cameron Falls, Ontario   43 °F 87% 29.92 in Rain  North at 8 mph 3:00 AM EDT Save
Caribou Island, Ontario   43 °F 100% 29.76 in Rain  ENE at 24 mph 2:00 AM EDT Save
Cobourg, Ontario   55 °F 100% 29.78 in Fog  Calm 3:19 AM EDT Save
Collingwood, Ontario   63 °F 88% 29.75 in Overcast  South at 8 mph 3:11 AM EDT Save
Cove Island, Ontario   63 °F 88% 29.72 in Mostly Cloudy  SE at 5 mph 3:00 AM EDT Save
Cyprus Lake, Ontario   63 °F 88% 29.72 in Mostly Cloudy  SE at 5 mph 3:00 AM EDT Save
Delhi, Ontario   64 °F 77% 29.75 in Mostly Cloudy  SSE at 6 mph 3:00 AM EDT Save
Dryden, Ontario   45 °F 53% 30.01 in Clear  NE at 5 mph 2:00 AM CDT Save
Ear Falls, Ontario   45 °F 53% 30.01 in Clear  NE at 5 mph 2:00 AM CDT Save
Earlton, Ontario   46 °F 93% 29.83 in Light Rain Mist  North at 5 mph 3:34 AM EDT Save
Egbert, Ontario   63 °F 88% 29.75 in Overcast  South at 8 mph 3:11 AM EDT Save
Elliot Lake, Ontario   54 °F 100% 29.72 in Overcast  NNE at 8 mph 3:24 AM EDT Save
Erieau, Ontario   76 °F 60% 29.76 in Clear  SSW at 8 mph 2:53 AM EDT Save
Geraldton, Ontario   45 °F 71% 29.97 in Scattered Clouds  NNE at 5 mph 3:00 AM EDT Save
Goderich, Ontario   67 °F 81% 29.71 in Rain  South at 6 mph 3:00 AM EDT Save
Gore Bay, Ontario   54 °F 100% 29.72 in Overcast  NNE at 8 mph 3:24 AM EDT Save
Great Duck Island, Ontario   54 °F 100% 29.72 in Overcast  NNE at 8 mph 3:24 AM EDT Save
Grenadier Island, Ontario   59 °F 100% 29.79 in Clear  ESE at 1 mph 3:33 AM EDT Save
Hamilton, Ontario   57 °F 100% 29.76 in Mostly Cloudy  ENE at 8 mph 3:00 AM EDT Save
Hamilton Airport, Ontario   57 °F 100% 29.76 in Mostly Cloudy  ENE at 8 mph 3:00 AM EDT Save
Harrow, Ontario   70 °F 78% 29.73 in Clear  Calm 3:14 AM EDT Save
Kapuskasing, Ontario   46 °F 81% 29.91 in Overcast  North at 8 mph 3:00 AM EDT Save
Kapuskasing Cda, Ontario   46 °F 81% 29.91 in Overcast  North at 8 mph 3:00 AM EDT Save
Katatota Island, Ontario   43 °F 87% 29.92 in Rain  North at 8 mph 3:00 AM EDT Save
Kemptville, Ontario   55 °F 94% 29.80 in Overcast  NNE at 5 mph 3:00 AM EDT Save
Kenora, Ontario   48 °F 43% 30.01 in Scattered Clouds  NNE at 7 mph 2:00 AM CDT Save
Killarney, Ontario   54 °F 100% 29.72 in Overcast  NNE at 8 mph 3:24 AM EDT Save
Kingston, Ontario   55 °F 94% 29.78 in Mist  Calm 3:25 AM EDT Save
Lagoon City, Ontario   61 °F 100% 29.76 in Overcast  South at 10 mph 3:32 AM EDT Save
Lansdowne House, Ontario   45 °F 87% 30.04 in Clear  North at 6 mph 3:00 AM EDT Save
London, Ontario   64 °F 77% 29.75 in Mostly Cloudy  SSE at 6 mph 3:00 AM EDT Save
Long Point, Ontario   71 °F 75% 29.78 in Clear  SSW at 8 mph 2:51 AM EDT Save
Moosonee, Ontario   32 °F 87% 29.96 in Scattered Clouds  WNW at 5 mph 3:00 AM EDT Save
Mount Forest, Ontario   59 °F 100% 29.75 in Overcast  ENE at 4 mph 3:04 AM EDT Save
Muskoka, Ontario   61 °F 100% 29.76 in Overcast  South at 10 mph 3:32 AM EDT Save
N Ontario Portable Eme, Ontario   48 °F 82% 29.91 in Overcast  NNE at 5 mph 3:00 AM EDT Save
Nagagami, Ontario   44 °F 80% 29.93 in Rain  NE at 5 mph 3:00 AM EDT Save
North Bay, Ontario   55 °F 100% 29.78 in Fog  ESE at 5 mph 3:00 AM EDT Save
Ottawa International, Ontario   55 °F 94% 29.80 in Overcast  NNE at 5 mph 3:00 AM EDT Save
Peawanuck, Ontario   30 °F 86% 30.19 in Cloudy  NNE at 10 mph 3:00 AM EDT Save
Petawawa, Ontario   54 °F 100% 29.79 in Overcast  SE at 2 mph 3:33 AM EDT Save
Peterborough, Ontario   55 °F 100% 29.78 in Fog  Calm 3:19 AM EDT Save
Pickle Lake, Ontario   59 °F 29% 30.04 in Scattered Clouds  NE at 6 mph 9:00 PM CDT Save
Point Petre, Ontario   55 °F 88% 29.77 in Overcast  NE at 5 mph 3:23 AM EDT Save
Port Colborne, Ontario   62 °F 84% 29.75 in Clear  South at 5 mph 2:53 AM EDT Save
Port Weller, Ontario   56 °F 96% 29.76 in Mostly Cloudy  South at 4 mph 3:00 AM EDT Save
Pukaskwa, Ontario   46 °F 92% 29.84 in Rain  NE at 8 mph 3:00 AM EDT Save
Red Lake, Ontario   40 °F 83% 30.02 in Partly Cloudy  Calm 2:00 AM CDT Save
St. Catharines, Ontario   56 °F 96% 29.76 in Mostly Cloudy  South at 4 mph 3:00 AM EDT Save
Sarnia, Ontario   68 °F 78% 29.72 in Clear  South at 6 mph 3:00 AM EDT Save
Sault Ste Marie, Ontario   55 °F 100% 29.73 in Overcast  East at 4 mph 3:00 AM EDT Save
Shearwater Rcs, Canada   39 °F 100% 30.10 in Partly Cloudy  West at 1 mph 4:00 AM ADT Save
Sioux Lookout, Ontario   41 °F 65% 30.01 in Partly Cloudy  NNE at 4 mph 2:00 AM CDT Save
Southeast Shoal, Ontario   73 °F 66% 29.77 in Mostly Cloudy  SSW at 7 mph 2:53 AM EDT Save
Sudbury, Ontario   50 °F 100% 29.79 in Light Showers Rain Mist  NNE at 14 mph 3:00 AM EDT Save
Terrace Bay, Ontario   46 °F 92% 29.84 in Rain  NE at 8 mph 3:00 AM EDT Save
Thunder Bay, Ontario   48 °F 82% 29.91 in Overcast  NNE at 5 mph 3:00 AM EDT Save
Timmins, Ontario   45 °F 93% 29.86 in Overcast  NE at 7 mph 3:00 AM EDT Save
Toronto, Ontario   57 °F 94% 29.77 in Overcast  ENE at 14 mph 3:14 AM EDT Save
Toronto Pearson, Ontario   61 °F 94% 29.77 in Mostly Cloudy  NE at 4 mph 3:00 AM EDT Save
Travers Agcm, Ontario   46 °F 46% - Mostly Cloudy  ENE at 10 mph 1:00 AM MDT Save
Trenton, Ontario   55 °F 88% 29.77 in Overcast  NE at 5 mph 3:23 AM EDT Save
Upsala, Ontario   45 °F 76% 29.94 in Rain  NE at 5 mph 2:00 AM CDT Save
Waterloo Wellington, Ontario   59 °F 100% 29.75 in Overcast  ENE at 4 mph 3:04 AM EDT Save
Wawa, Ontario   43 °F 97% n/a Fog  NE at 10 mph Estimated Save
Welcome Island, Ontario   48 °F 82% 29.91 in Overcast  NNE at 5 mph 3:00 AM EDT Save
Western Island, Ontario   62 °F 97% 29.70 in Rain  North at 9 mph 3:00 AM EDT Save
Wiarton, Ontario   63 °F 88% 29.72 in Mostly Cloudy  SE at 5 mph 3:00 AM EDT Save
Windsor, Ontario   72 °F 73% 29.74 in Mostly Cloudy  SSW at 8 mph 3:00 AM EDT Save
U.S. Weather Warning Legend
Tornado Warning Tornado Warning
Tornado Watch Tornado Watch
Severe Thunderstorm Warning Severe Thunderstorm Warning
Severe Thunderstorm Watch Severe Thunderstorm Watch
Winter Weather Statement Winter Weather Statement
High Wind Advisory High Wind Advisory
Flood Warning Flood Warning
Flood Watch / Flood Statement Flood Watch / Flood Statement
Hurricane Local Statement Hurricane Local Statement
Heat Advisory Heat Advisory
Dense Fog Advisory Dense Fog Advisory
Fire Weather Advisory Fire Weather Advisory
Hurricane Watch Special Weather Statement
Hurricane Warning Record Set
Tropical Storm Watch Public Reports
Tropical Storm Warning Public Statement