When Snape saw that Sirius was in fact there, he had Sirius immediately alert members of the Order to the situation.

Did Snape alert the Order about Padfoot?

He knew. It's how the Order got to the Ministry so damn fast, and in force. Snape pretended Harry was spouting rubbish so he could escape to somewhere Umbridge was not and contact the Order. He'd heard those nicknames often enough growing up to know exactly who Padfoot was, and what Harry was trying to tell him.

Did Snape tell the Order about Sirius?

When Harry didn't return from the forest with Umbridge, he suspected he was going to the Ministry of Magic to save Sirius. It was him who alerted The Order and he himself went into the forest in search of Harry.

Did Snape know what Harry was saying about Padfoot?

It is important to note that while Snape had knowledge of "Padfoot" and occasionally indirectly helped Harry, his overall intentions were to protect his cover as a double agent and maintain his loyalty to Voldemort. Snape's actions were often complex and driven by his own motivations and loyalties.

Did Snape know that Sirius was innocent?

No, he didn't know. That's why Rowling specified that in Vold War One the Death Eaters were organised into cells, with each only knowing the identity of a few of the others. So Snape didn't know Pettigrew was a Death Eater, and he didn't know that Sirius wasn't one.

Why Dumbledore Said 'After All This Time?' to Snape - Harry Potter Explained

Who did Snape hate more James or Sirius?

There is always an implicit ire directed at James the most, because as we see in SWM and as Snape's dialogue pretty much everywhere implies, he was the one who lead the bullying. Although he hates Sirius and Lupin quite a bit too.

Did Sirius apologize to Snape?

No, James and Sirius did not apologize to Snape for their bullying, but that doesn't mean they never felt regretful of their actions. They had seven years of mutual antagonism, and they loathed each other to the bitter end.

Did McGonagall know Snape was a spy?

But what McGonagall doesn't know is that Snape is actually a double agent working for Dumbledore, so he has no intention of harming her. That being said, Snape holds back quite a bit. Many fans, however, like to speculate who would have won the duel had Snape given it his all.

Did Snape know Lupin was moony?

Yes, I believe so. There are two pieces of evidence. One from PoA and one from OotP. In PoA, once the Marauder's Map had begun to insult him, Snape immediately called for Remus Lupin, or “Moony”.

Did Snape know Harry was under the invisibility cloak?

Dumbledore was doing James a favour by helping him pass down the Invisibility Cloak to his son Harry. Snape definitely knew because in book 4 when Harry sees crouch in Snapes office, he's in his invisibility cloak. As soon as snape sees the golden egg and the map he says 'potters here' to mad eye. Potters here.

Did Draco know about Sirius?

Draco, who implies that he is aware of how Sirius Black was supposedly involved in the deaths of Harry's parents, also taunts Harry about the impending threat of Black: "If it was me, I'd want revenge. I'd hunt him down myself."

Did Sirius know that Harry was a Horcrux?

Nope! He did not even know the whole story that Voldemort made horcruxes to prevent his death which came known to Harry later in the 6th book.

What did James and Sirius call Snape?

Why does James Potter call Snape "Snivellus" at first if he knows that Snape is from an old wizarding family? We don't actually know whether it's James or Sirius who first gives Snape the “Snivellus” nickname.

How did Umbridge survive the Centaurs?

She then attacked a centaur. As a result, Umbridge was carried off and nearly killed by the herd. She was saved by Dumbledore, who managed to calm the herd due to their respect for him and brought her out without a scratch but in a severe state of shock.

Was Snape really jinxing Harry's broom?

This jinx was used by Quirinus Quirrell on Harry Potter's Nimbus 2000 in early November 1991, during a Quidditch match. It was an attempt to murder Harry for Lord Voldemort. No one in the stands detected Quirrell of using this jinx, except Professor Severus Snape, who attempted to save Harry with a counter-curse.

Did Snape tip off the Order?

Also Harry had lessons from him in Occlumency, perhaps it was Harry's way of asking the professor to read his mind, and the vision he had. It was a way to alert him to what was happening in the Hall of Prophecy. As members of the Order did show up, it seems Professor Snape did send out the warning.

Why was Newt Scamander on the Marauder's map?

Newt believed that magical creatures were not dangerous if treated with respect, and Buckbeak only attacked Malfoy when he disrespected him. Due to this, Newt would have gladly traveled to Hogwarts to defend Buckbeak and try to prevent his execution, causing him to appear on the Marauder's Map.

Did Snape reveal Remus was a werewolf?

At the end of the year, Severus Snape, furious over Sirius Black's escape and his resultant loss of the Order of Merlin promised to him by Cornelius Fudge, made public that Lupin was a werewolf, whereupon Lupin resigned in anticipation of the public outcry against a werewolf teaching at Hogwarts.

Why didn't Snape recognize the Marauder's map?

Severus didn't recognise Marauders map, because he didn't know it was map in the first place. But he did understand that Lupin was one of the creators.

Why didn't Snape fight back against McGonagall?

At this point, McGonagall begins to gain the upper hand as it becomes clear he cannot further transfigure or counter her attack, so the only way he avoids it is by taking refuge behind a suit of armour that he forces in front of him.

Who kissed Professor McGonagall?

Standing under mistletoe at Hogwarts is risky business.

Is McGonagall or Snape more powerful?

The duel between McGonagall and Snape proved the latter's status as Hogwarts' most powerful professor.

Did Snape regret calling Lily a mudblood?

He Called Lily A Mudblood

Even though Snape repeatedly tried to apologize for his mistake afterward, it became clear that it was yet another incident that had done irreparable damage to their friendship.

Why didn't Lily choose Snape?

Lily Only Ever Saw Snape As A Friend

The fact Snape and Lily were only friends, and she only saw it as such, reveals a lot about his refusal to respect her boundaries. It seems his love was an ongoing obsession with her that lasted long after her death.

Why did Harry's dad bully Snape?

James isn't motivated by anything much in attacking Snape in this way; he does it because he's bored, because he can, and because he wants to show off to some admiring girls, including Harry's mother, Lily. Harry is deeply disturbed by witnessing Snape's worst memory.