Chris Wood came back to haunt Newcastle United as his hat-trick condemned Eddie Howe's side to a rare defeat St James' Park.
Alexander Isak gave the Magpies the lead in the 23rd minute before Wood equalised on the brink of half-time. He then added this second and third early in the second-half. Only Manchester City, Liverpool and Arsenal have won on Tyneside in the Premier League since Howe was appointed in November.
Howe made two changes from the 1-0 defeat to Luton Town. Sven Botman was handed his first Premier League start since September as Jamaal Lascelles dropped out through injury. Alexander Isak was selected ahead of Callum Wilson in attack.
And it was the Swede that put United ahead in the 23rd minute when he scored from the penalty spot after being tripped by Ola Aina.
While Newcastle continued to dominate possession, the visitors produced some dangerous moments on the counter-attack and equalised when Anthony Elanga set up Wood, who tapped home into an empty net.
Wood then flipped the game on its head in the second-half. Elanga assisted the New Zealand striker again before rounding Martin Dubravka to complete his hat-trick.
Here's our Newcastle United player ratings from the defeat on Tyneside:
5. Sven Botman - 5
Botman’s first start since September saw Howe return to his usual back four. Uncharacteristically looked ragged. | AFP via Getty Images
6. Dan Burn - 3
Given a torrid time by Anthony Elanga, who had the beaten of the left-back all afternoon, but not helped by the way the Magpies set up. Wrong side of Chris Wood for Forest’s second. | AFP via Getty Images
7. Bruno Guimaraes - 5
The Brazilian was pushed further forward and as a result left gaps in midfield, which Forest exploited. Was effective in the final third in the first-half but not after the break. | Getty Images
8. Lewis Miley - 6
Was the driving force behind Newcastle’s attacks in the first-half with a clever pass that led to Isak’s penalty. However rarely seen after the break. | AFP via Getty Images