(NBC News: Tracie Potts) - Typhoon Haiyan has prompted a mass relief effort here in the U.S.
Filipinos are the second largest Asian community in the U.S., and, across the country, communities are pulling together to send food, clothes and money to help.
When disaster hits, Americans respond quickly.
Runners in New York's Central Park and in Southern California raised money. Some are worried about their families.
"The last time I heard from them, they were under water," said Ruth Ann Stewart whose family is in the Philippines.
In suburban Philadelphia, Hyen David put a donation box outside his Filipino grocery store after hearing his wife's family was alright.
"I had to come up with something where I would be some help," he said.
People are donating and praying all over the U.S.
Julieta Wilde is worried because all the roads to the village where her family lives are flooded.
"I cannot do anything about it; all I can do is pray," said Wilde.
Many feel helpless because they can't get in touch with their families.
"Is my Mom alive? Is my sister alive, you know? Your folks, you don't know where they are," said Minnesota Resident Josephine Fernandez.
"My aunt, we just talked to her. Her house is flooded and they have to evacuate," said Lena Euperio of theDivine Mercy of Our Lord Catholic Church.
The American Red Cross is mobilizing a massive humanitarian effort, and the first wave of Marines and sailors flew in Sunday to help with search and rescue.