We now take you north and into the high desert of the Antelope Valley. This valley got its name from the large numbers of pronghorn that once roamed here into the 1800s, before they were nearly exterminated. The triangular-shaped desert plain opens out into the western edge of the Mojave Desert. The San Andreas Fault Zone extends along its southern flanks into the base of the San Gabriel Mountains, while the Tehachapi Mountains branch out along its northwestern border. These massive mountain barriers leave it in a classic dry rain shadow facing the continent, even though most of the valley sits at just below 3,000 feet (~900 m) elevation.
As the wet winter storms of 2023 passed through, orographic precipitation drenched nearby mountains to the south and west and buried higher elevations in record snowfall. But the rain shadow performed on steroids, leaving relatively meager precipitation totals in the high desert and even drier conditions farther east. By late April, official weather stations recorded seasonal totals ranging between about 3-6 inches across the Antelope Valley, with substantial drop offs toward the east. But the weather station named Poppy Park near the Antelope Valley Poppy Reserve apparently recorded a whopping 16 inches of rain. If this isolated anomaly is even close to correct, it helps to explain the impressive superbloom that erupted around the Antelope Valley Poppy Reserve in April and it also helps us understand why many other parts of our deserts weren’t invited to this year’s spectacular flower display. Sit back and enjoy the show.