Howdy y’all!
I hope you are enjoying your summer, wherever you may be. I certainly am here in Needles. This week in the desert was an especially memorable one, thanks to a visit from an old friend – rain. And a happy reunion it was. After two months in Needles, I’ve seen a grand total of 1.02 inches of rain. And it all came on Tuesday of this last week! So I guess that means we have come to the much-anticipated summer monsoon season!
Now here’s a plant that would be happy to see a little rain.
Now, I’ll try to give you a little bit of science here. But here’s my disclaimer: I’m no meteorologist. So I’ll keep it simple and hopefully correct. The Mojave Desert usually has winds that come from the west and northwest. Those winds carry moisture from the ocean, but as they pass over mountain ranges before they reach the Mojave, they drop most of it. When they get to us, those weather systems have little moisture left, and so this place ends up as a desert because it sits in the mountains’ rain shadow.
In the summer months here, that can change. Temperatures climb, high pressure systems move north, and the lower atmospheric pressure in the Mojave causes winds to come from Mexico to the south, instead of from the over the mountains to the west. Those southerly winds carry moisture from the Pacific Ocean or Gulf of Mexico. The result? Large monsoon thunderstorms that move through the area from time to time and can drop a lot of rain in a hurry.
Rain in the desert! That will make some thirsty plants very happy.
It is so cool to see that rain in the desert when it finally does show up! When the storm came through on Tuesday we saw pouring rain and high winds for several hours. Much of the ground here is very dry and hard, so it doesn’t absorb water well like the Midwestern soil that I’m used to. That means that rain water runs off the soil into sandy desert washes, which can become filled very quickly and violently with flash flood waters during rainstorms.
A double rainbow!
The power and beauty of the thunderstorm was impressive to watch from our house. Streams of water gushed down the street into the river. Lightning filled the sky. A double rainbow made a brief appearance. The road was washed out within half a mile in both directions from our house, so we were stuck at home without power, but no matter. Our porch was as good a place as any to watch the storm. And I ended my night reading Macbeth by candlelight in our dark house, with rain pounding the windows, and thunder shaking the house. That is certainly a pleasant way to spend an evening.
The thunderstorm this week was a most welcome change to our desert weather. Hopefully, there will be a number of plant species that bloom in the coming months in response to rain as well!
Until next time!
-Steve
Needles Field Office, BLM