Imperial, California short periods of time. The precipitation in the winter months is predominantly rain showers from the occasional winter storms. At times these storms bring cold temperatures to Imperial and surrounding cities, and mountain snowfall to the nearby mountains. Snow is almost totally unknown in the city, except for a powerful winter storm that covered the entire valley with 4 inches snow on December 12, 1934 and a very brief fall of sleet mixed with hail during a shower in December 1967. On average there are about 11 days that dip into the mid to lower 30s. In January, the normal
Hail spike the multiple path at a later time than the energy that came back directly from the hail to the radar. Both are however on the same radial angle from the radar as the antenna did not have the time to turn significantly. The multipath echoes are then analyzed on the radar display as echoes extending in a radial direction behind the actual location of the hail/heavy rain core. The loss of energy by due to multiple reflections means weaker return echoes. The hail spike region has thus comparatively quite weaker echoes than the echoes directly from the hail or heavy