12-hour weather prediction
| U.S. 12-hour forecast (from the National Weather Service). Blue lines with triangles are cold fronts; red lines with semicircles are warm fronts. Lines with both blue and red segments are stationary fronts. The pink dashed lines are contours of atmospheric pressure, with "H" indicating a region of high pressure and "L" indicating low pressure. Regions with significant weather are marked. |
Credit: National Weather Service
For more info: http://www.hpc.ncep.noaa.gov/