Tip:
Highlight text to annotate it
X
here's a video presentation from the National Weather Service in San Diego
this is meteorologist Alex tardy this presentation is about six minutes long
it'll cover the water supply across California
the recent rainfall the lack of precipitation overall since this winter
and the above normal temperatures hope you enjoy the video presentation
let's take a look at the water supply right off the bat for California
much about water does come from Northern California
you can see at our main reservoirs Northern California
are below percent of normal for this date
quite a bit below the historical average
for example Shasta reservoir at 53 percent
compared to a 73 percent for the historical average
at this stage for Southern California
main reservoirs the Diamond Valley storage is
currently at about eighty percent fall when you look back to about this time
last year
this is quite a bit lower as shown in the red circle
for San Diego our water supply with that many smaller reservoirs
it varies greatly some other key reservoirs still have considerable
water supply while others are less than 40 percent
as shown here well we did get some precipitation in the month of July
percent of normal for the rainfall
the scattered showers and the several periods up thunderstorms
didn't produce quite a bit above normal precipitation
all the way across the Coachella Valley up into Big Bear
and then wrapping itself down into the desert out San Diego County
elsewhere it was kinda spotty but there was some rainfall in the Inland Empire
and Orange County here's a look at the general storm totals for the rainy
period that we had July 20-27
as you can see many areas little over an inch of rainfall and
some locations
there was several inches of rainfall adding up
around three inches in the wet spots here's a look at what's a few the
stronger thunderstorms did in our desert slopes
here's a photo of flash flooding deadly flash flooding
that occurred all across Highway seventy-eight
in San Diego County a look at some specific numbers from our rain gauges
across the region here
here's the San Bernardino Mountains at the Riverside County mountains
and remember the large wildfire the mountain fire where there were
debris flows with one to three inches of rainfall
all seen a 48 hour period about
further south the Riverside County and northern San Diego County
into the anza-borrego State Park several locations measure rainfall
we even had a weather spotter that are courted
close to three-and-a-half inches of rainfall
near Warner Springs and west of Borrego
further south in San Diego County also an area dealing with
a recent large wildfire the chariot fire we saw debris flow in that region and
many locations
around one to two inches rain
or how are the temperature so far for the month of July
on the left hand side you can see a little bit above normal
just a couple degrees but still above normal and closer to three degrees above
normal
desert's how about when you look at me through July
so far this spring and early summer well considerably above normal across
almost all of the West shaded in the orange
and the Red that several degrees above normal
for that three month period this is having an impact
along with the dry winter on the
the fuel moisture. Live moisture and upper chart shows in red
very dry conditions at the current state
and even drier that we saw last year and drier than normal
and the dead fuels the fuels that are laying across the ground
and it not alive you could see that those fuels
have responded a little bit with the recent rainfall in the mountain areas
as shown here initiated blue area but generally
running around just above the historical average
which is the light shading very dry conditions we've seen
all the way through August 1st
what's the drought conditions well the Drought Monitor shows that most of
California because of what we looked out already the lack of precipitation
so far with back to back dry winters
results in our low water supply most regions are in a severe drought that is D2
conditions as shown here
what's the outlook well for the fall September through November
what we're looking at is expected to be up of normal conditions in areas that
are commonly hot
similar to what we've seen this spring so continuing conditions
this likely means at least one more really good heat wave for our region
and likely a couple for the desert areas
the precipitation outlook for this coming winter not much
indication at this point. We'll have an update further along here
but currently with neutral ENSO conditions over the Pacific Ocean
there's not much signal
to provide a a forecast for
the upcoming winter season well we found this presentation useful
and your planning needs as well as information-sharing
here are some links that you can use especially the ones on top for
monitoring real-time weather forecast
and real time weather in the middle of the screen
thanks for joining this video presentation