los angeles bureau. will? >> good afternoon, large parts of california got much needed rain but we'll have to see a number of storms just like that before we can even think about breaking out of this historic drought. even with the rainfall this week, more than 99% of california remains in some form of drought. i believe we have a map and if you take a look at our map, you can see the red in the map is actually -- apparently we don't have that map but we can tell you large parts of -- large swath of california are in the drought. a new study in the journal by the american gee toshio physical union used the growth in tree rings to determine this is the worst drought they have seen in 1200 years. it's no surprise experts say this is a large uphill battle, largely because the state is fry trying to make up for three years of little to no consistent rainfall.