Cold Front, 27 April 2004.
- This front took us by surprise here in the office. It was certainly a
blustery day but we didn't really expect such a swift change in the
- A colleague driving to Duncan encountered the rain about an hour
before it arrived here. He described it as a sheet or wall of rain.
- The volume of rain and the rain rate were not very great, but the onset
was quite sudden.
- The same time has been marked on each figure with a vertical grey line.
Here is the data.
Characteristics of a Passing Cold Front
||minimum, then sharp rise
||increasing: Ci, Cs and Cb
||short period of showers
||heavy rains, sometimes with hail, thunder and lightning
||showers then clearing
||fair to poor in haze
||poor, followed by improving
||good, except in showers
||high; remains steady
GOES satellite images are available here (15 MB) as
an animated GIF file.