Both Citi Bank and JP Morgan stated expect a recession for the next 3 yrs.....SO why is the Federal Reserve raising interest rates tomorrow?

Sgt Kelli Mays since it has some time since I was familiar with the Federal Banking System I decided ti dig a little into the what, how and why specific rates might be raised. I found a Washington Post article from yesterday which seemed reasonable so I quoting it in part.
"Raising rates, however, is only the first step in getting the economy -- and Fed policy -- back to normal. The process will likely take several years, and there is heated debate over whether the pre-recession standards for a strong economy and appropriate monetary policy are even achievable.
After deciding to increase rates, the first challenge facing the Fed is exactly how to do it. Historically, the central bank has set a target for the federal funds rate -- the amount that banks charge to lend to each other overnight -- and bought and sold Treasury bonds on the open market to hit that goal.
But that method will prove too unwieldy now that the Fed has amassed a balance sheet of more than $4 trillion. Instead, the central bank hopes to manage the fed funds rate by changing two other rates: the interest it pays to banks for reserves held at the Fed and the amount it pays other financial institutions, such as money market funds, for short-term trades known as reverse repurchase agreements. The former is expected to act as a ceiling on the fed funds rate; the latter a floor.
The mechanics are complex, highly technical -- and untested on a broad scale. Still, the Fed has been conducting smaller trials for the past two years and is confident the experiment will work."

https://www.washingtonpost.com/news/wonk/wp/2015/12/14/the-federal-reserve-will-likely-raise-interest-rates-this-week-this-is-what-happens-next/

I like LTC Stephen F. response about some "corrective" mechanics. Better yet, your question should be "How can the FED react to a recession when their interest rate is zero?" I expect the FED is positioning towards what scenarios can likely play out over the next few years.

The Fed Res wanted to raise the rates long ago, but they've waited until the economy has clearly shown that it is strong enough to withstand raising the rate. It apparently now is, so they're looking to start raising the rates. I don't know where you're getting the "recession for the next 3 years" prediction, but you can always find economists predicting recessions (and a 3-year recession would be almost unprecedented). We've had sustained growth for over 6.5 years now (since June of 2009), so the clock is ticking on an eventual recession. The economy moves in cycles, and no politician or Fed Reserve chair can prevent one forever. However, it certainly gives plenty of opportunities for politicians to throw out empty rhetoric that they can prevent them.