With Texas still reeling from Hurricane Harvey and another storm barreling toward Florida, the Federal Emergency Management Agency (FEMA) is expected to run out of money by Friday, according to a Senate aide, putting pressure on Congress to provide more funding this week.

As of 10am on Tuesday morning, FEMA’s Disaster Relief Fund, which pays for the agency’s disaster response and recovery activity, had just $1.01 billion on hand. And of that, just $541 million was “immediately available” for response and recovery efforts related to Hurricane Harvey, according to a spokeswoman for FEMA who asked not to be identified by name.

The $1.01 billion in the fund on Tuesday morning is less than half of the $2.14 billion that was there at 9am last Thursday morning - a spend rate of $9.3 million every hour, or about $155,000 a minute.

The agency would be out of funds just as Irma, a category 5 hurricane, might start thrashing the coast of Florida.

“If it’s down to $1 billion or less, then I would say there’s a great concern,” said Elizabeth Zimmerman, who until January was FEMA’s associate administrator for the office of response and recovery. “Congress needs to take action very quickly.”

President Donald Trump’s administration has asked Congress for an injection of almost $8 billion in additional funds.

Shape of things to come? The US National Weather Service map of the expected trajectory of Hurricane Irma (US National Weather Service)

The House is voting Wednesday on funding for Harvey. The Senate, which is expected to act this week as well, is considering whether to add a suspension of the federal debt limit to the measure. The legislation would then go back to the House.

In the meantime, FEMA has restricted spending to what it calls “immediate needs” — what it calls “lifesaving, life-sustaining response efforts” for Harvey and Irma. Zimmerman said the agency can also start pulling money from other projects.

The aftermath of Hurricane Harvey Show all 19 1 /19 The aftermath of Hurricane Harvey The aftermath of Hurricane Harvey A tattered U.S. flag damaged in Hurricane Harvey, flies in Conroe, Texas Reuters The aftermath of Hurricane Harvey Lisa Rehr holds her four-year old son Maximus, after they lost their home to Hurricane Harvey, as they await to be evacuated with their belongings from Rockport, Texas Reuters The aftermath of Hurricane Harvey People line up for food as others rest at the George R. Brown Convention Center AP Photo/LM Otero The aftermath of Hurricane Harvey Volunteers with The American Red Cross register evacuees at the George R. Brown Convention Center Reuters/Nick Oxford The aftermath of Hurricane Harvey Soldiers with the Texas Army National Guard help the residents of Cyprus Creek Reuters The aftermath of Hurricane Harvey Residents wade through floodwater Reuters/Nick Oxford The aftermath of Hurricane Harvey Residents walk along the flooded roadway of Texas 249 as they evacuate their adjacent neighborhoods EPA The aftermath of Hurricane Harvey A man floats past a truck submerged on a freeway flooded by Tropical Storm Harvey on Sunday AP The aftermath of Hurricane Harvey People are rescued by airboat as they evacuate from flood waters from Hurricane Harvey in Dickinson, Texas Reuters The aftermath of Hurricane Harvey James Archiable carries his bike through the flooded intersection at Taylor and Usenet near downtown Houston, Texas EPA The aftermath of Hurricane Harvey A massive sinkhole opened up on a motorway in Rosenburg, a city 25 miles southwest of Houston, Texas Rosenberg Police The aftermath of Hurricane Harvey People are rescued from flood waters from Hurricane Harvey in an armored police mine-resistant ambush protected vehicle in Dickinson, Texas Reuters The aftermath of Hurricane Harvey People are rescued from flood waters from Hurricane Harvey on a boat in Dickinson, Texas Reuters The aftermath of Hurricane Harvey Evacuees are airlifted in a US Coast Guard helicopter after flooding due to Hurricane Harvey inundated neighborhoods in Houston, Texas Reuters The aftermath of Hurricane Harvey Evacuees leave a US Coast Guard helicopter after being rescued from flooding due to Hurricane Harvey in Houston, Texas Reuters The aftermath of Hurricane Harvey Residents look on at a submerged motorway during a break in the rain in Houston, Texas EPA The aftermath of Hurricane Harvey People photograph the submerged motorway interchange EPA The aftermath of Hurricane Harvey Debris lies on the ground after a building was destroyed by Hurricane Harvey in Aransas Pass, Texas AP The aftermath of Hurricane Harvey Dominic Dominguez searches for his boat in a boat storage facility that was heavily damaged by Hurricane Harvey near Rockport, Texas EPA

But without more money, Zimmerman said, the agency will be hard-pressed to deal with what’s coming. “We’re not even at peak hurricane season,” she said.

Irma comes after Hurricane Harvey, which smashed ashore in Texas on 25 August causing widespread damage, power outages and flooding and taking almost a fifth of US oil refining capacity offline.