B
bobw
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This thread started to remind me of the TV programs, like NOVA, that show the rainy season of some desert and go on to explain how the creatures there have weeks to reproduce before the water dries up. I was wondering if something like this happens in Mojave. I found a couple of articles.<br /><br />http://www.blueplanetbiomes.org/mojave_climate.htm<br />The Mojave Desert lies in the rainshadow of the Coast Ranges and receives an average annual precipitation of 5 inches. Most of the rain falls between November and April. There is, however, a summer thunderstorm season from July to September with violent and heavy rainstorms possible. In 1986 only 1.5 inches of rain fell on the Eastern Mojave Desert, while in 1983 6.5 inches came down. May and June are usually the driest months.<br /><br />http://pubs.usgs.gov/fs/fs117-03/<br />The annual precipitation cycle shows two distinctive patterns that approximately divide the region along the 117°W meridian, which is near Barstow, California. A biseasonal pattern prevails at 90% of the weather stations used to collect data in this study that lie east of 117°, whereas a winter-dominant pattern is typical of 70% of the stations lying west of 117° (fig. 2). In both cases, May and June are consistently dry, accounting for less than 5% of annual rainfall. October through April precipitation of the winter dominant pattern accounts for 82% of the annual total, whereas the biseasonal pattern accounts for 66%. During the warm months of July through September, 13 and 29% of the annual total falls in the winter-dominant and biseasonal patterns, respectively.<br /><br />Since Edwards AFB, at 117 deg. 52 min, straddles the zones I did some back of the napkin calculations and determined that we are right in the middle of a window where 20% of the annual precipitation should fall. All this talk that mother <div class="Discussion_UserSignature"> </div>