Isa's name origin is Hebrew, and Isa means God is my oath. Isa is a version of Isabel (Hebrew): Spanish version of Elizabeth. Isa is also a variant of Isaura.
The 1906 San Francisco earthquake struck the coast of Northern California at 5:12 a.m. on April 18 with an estimated moment magnitude of 7.8 and a maximum Mercalli intensity of XI (Extreme).
San Francisco averages just two days a year when the temperature reaches 90 degrees Fahrenheit, and none over 100. No matter how warm the day, at night the temperature always cools to less than 70 degrees. The city's hottest days usually occur in September and October.