The IRS headquarters at 1111 Constitution Ave. will remain closed at least through the end of this week due to damage caused by torrential rins in the Washington, D.C. area.  The basement flooded and damaged the building’s electrical, heating, and air conditioning systems.  See the Washington Post:  Justice Dept., Archives and IRS to Stay Shuttered Rest of Week, by Paul Schwartzman & Megan Greenwell:

Terry Lemons, the agency’s chief spokesman, declined to set a date for the building’s reopening, saying, "We’ll continue assessing the situation. "We have not had a situation like this in 20 years," he said, speaking from his home in Northern Virginia. "The building sustained significant damage in the basement. Before we can open, we need to have our electrical system and air conditioning working." Lemons said he did not know how many of the 2,400 employees assigned to the building were working. But he said: "We’re continuing our tax administration work. The tax system continues to operate."

IRS employees can call the employee emergency hot line at 1-866-743-5748 (option 3, state code 32) or check the IRS’s web site (keyword "employee emergency") for further updates.