Sept 1 (Reuters) - Hermine, previously a tropical storm, has strengthened into the fourth hurricane of the 2016 Atlantic hurricane season, the U.S. National Hurricane Center said on Thursday.

NAIROBI (Thomson Reuters Foundation) - The La Nina weather phenomenon is likely to worsen drought and hunger in Somalia, especially in the north where many people and their animals are migrating in search of water after four failed rainy seasons, the United Nations said on Thursday.

(Reuters) - Tropical Storm Hermine was heading toward the northern Florida coast on Thursday and is expected to strengthen into a hurricane by the time it hits land, the U.S. National Hurricane Center said.

KARACHI, Sept 1 (Reuters) - Two American mountain climbers have gone missing in northern Pakistan while attempting to scale a peak and bad weather was preventing a rescue, the Alpine Club of Pakistan said on Thursday.

KAILUA-KONA, Hawaii (Reuters) - Hurricane Madeline weakened to a tropical storm on Wednesday as it advanced toward Hawaii's Big Island, while a hurricane warning was issued for another storm approaching the Gulf Coast of Florida, where the governor has called an emergency.

Aug 31 (Reuters) - Tropical Storm Hermine continues to strengthen over the eastern Gulf of Mexico and hurricane warning was issued for portion of northwestern Florida, the NHC said in its advisory late Wednesday.

WASHINGTON (Reuters) - Republican presidential candidate Donald Trump on Wednesday said that under his presidency, migrants in the country illegally would be unable to obtain legal status or citizenship and must return to their country of origin and apply to re-enter.

MEXICO CITY, Aug 31 (Reuters) - President Enrique Pena Nieto said on Wednesday he told Donald Trump that Mexico will not pay for the Republican presidential candidate's proposed wall along the Mexico-U.S. border, contradicting Trump's assertion they didn't discuss payment.

(Reuters) - Tropical depression No. 9 on Wednesday strengthened into Hermine, the eighth tropical storm of the season, the National Hurricane Center said.