In a historic development this weekend, three major hurricanes were recorded over the Pacific Ocean for the first time since records have been kept.

Hurricane Kilo, Hurricane Ignacio and Hurricane Jimena were all classified as Category 4 storms on Sunday, according to the National Hurricane Center (NHC), the second highest classification on the Saffir-Simpson scale.

It was the first time on record that there were three Category 4 hurricanes in the Pacific at the same time, and the first time three major hurricanes—defined as Category 3 or higher—were recorded over the Pacific, according to Weather.com.

“Sea surface temperatures are extremely warm, averaging 2 to 5 degrees above normal,” said meteorologist Chris Robbins, a former NHC forecaster and founder of Robbins Meteorological Consulting and iWeatherNet.com. “This anomaly is well north of the oceanic warming associated with a typical El Niño.”

The rare event was greeted with some enthusiasm by hurricane expert Eric Blake of the NHC on Twitter:

By 8 a.m. Eastern time Monday, Hurricane Jimena, still classified as Category 4, was moving west with maximum sustained winds of 150 miles per hour. The hurricane was not expected to lose much strength in the next couple of days, according to the NHC’s latest advisory.

Hurricane Kilo also remained a Category 4 and was heading toward the international dateline, according to the NHC. The storm was located about 1,370 miles west of Honolulu and had maximum sustained winds of 135 miles per hour.

The Saffir-Simpson scale

Hurricane Ignacio was steadily weakening as it passed about 460 miles east of Honolulu, said the NHC. The storm had maximum sustained winds of about 105 miles per hour and was expected to pass east and northeast of the main Hawaiian islands in the next few days.

The storm was already creating dangerous and possibly life-threatening surfing conditions, according to the NHC.

Meanwhile, the second hurricane of the 2015 Atlantic season was named on Monday.

Hurricane Fred was bringing strong winds and heavy rain to the Cape Verde Islands, the Portuguese-African archipelago located off the northwest coast of Africa. At 2.00 p.m. ET, the Category 1 hurricane had maximum sustained winds of 85 miles per hour and was expected to produce coastal flooding and large and dangerous waves. A hurricane warning was in effect for the islands, the first on record, according to Weather.com.