KINGSTON, Jamaica (AP) — U.S. forecasters issued a hurricane warning for Jamaica Saturday as Storm Melissa reached hurricane strength, threatening catastrophic flooding in the northern Caribbean. A hurricane warning means winds of at least 74 mph (119 kph) are expected in the area within 36 hours.

Hurricane Melissa strengthened Sunday into a Category 4 storm and could potentially intensify even more as it is projected to bring torrential rain and catastrophic flooding to Jamaica and Haiti.

The National Hurricane Center in Miami warned of "life-threatening and catastrophic flash flooding and landslides" throughout Hispaniola.

Rain started in Southwest Oregon and far Northern California early Monday morning and continued through the day. Downtown San Francisco recorded 0.87 inch of rain, while San Jose measured 1.52 inches, marking the second wettest October day on record. Northern California will dry out through the day on Tuesday.

Hurricane Melissa threatens to make a direct strike on Jamaica as the most powerful storm in its history. See how strong it will become and where it’s headed.