Even as U.S. reels under the spell of Tropical Storm Isaac that lashed Florida Sunday, a series of natural disasters seems to have struck southeastern California and the Pacific Ocean about 78 miles off the coast of El Salvador Sunday. While California witnessed an earthquake measuring 5.5 magnitude, the Pacific Ocean was hit by an earthquake measuring 7.4 magnitude, the U.S. Geological Survey said.

A Reuters report indicates that there is no tsunami threat to Hawaii and no destructive Pacific-wide Tsunami is expected. However, a warning was in effect for Costa Rica, Nicaragua, El Salvador, Honduras, Gautemala, Panama and Mexico.

The earthquake struck at a depth of 33 miles in the Pacific Ocean. In the earthquake that rocked southeastern California, the largest quake recorded at 1:57 p.m. was centered about three miles northwest of Brawley town, Associated Press reported.

Luckily, no casualties have been reported thus far in both the incidents. It is said the area near the southern end of Salton Sea was shaken by more than 30 additional earthquakes measuring 3.5 magnitude.

Commenting on the southeastern Californian quake, USGS seismologist Lucy Jones told Associated Press that earthquake swarms are common in the region, known as the Brawley Seismic Zone.

"The area sees lots of events at once, with many close to the largest magnitude, rather than one main shock with several much smaller aftershocks."

For a real-time view of the earthquake affected regions, check out the map that provides complete details of the recent quakes that centered around southeastern California and the El Salvador coastline near Pacific Ocean.