Whether her broadcast was ever received or not Carol doesn't know, but the electrical activity likely had an effect on everything in the area. Hopefully it was temporary.
Captain Marvel takes to the skies and reaches the Raft only moments after the rain starts. The scene below her is more or less what she expected: something bad has happened - and something worse is about to happen if she can't figure out a way to stop the Outpouring of Inmates from escaping. She can see a blue devilish figure on the landing deck and a number of S.H.I.E.L.D. Agents nearby, trying to recover from the explosion.
Doom Pool: 2d6
Active Scene Distinctions: Debris, Dozens of Little Fires, Outpouring of Inmates, Rain, S.H.I.E.L.D Agents, Reinforced Entry Bay Doors