Graham P Davis wrote:

Should be little difficulty picking where the Arctic front is:

https://twitter.com/anthonywx/status/440116454436777984


Shows up very well on he

http://www.weatherobs.com/

Click on the "Marker" drop-menu and select temperature then move the map to the
USA. -3 deg in Dallas and +22 deg in Houston.

--
Norman Lynagh
Tideswell, Derbyshire
303m a.s.l.
http://peakdistrictweather.org