Possible Clues:

• Raise alarm falsely about railway current surging back
• Raise fake concerns about rising stream holding up railway
• Cause a false alarm
• Raise a false alarm too often, then not being believed when help is really needed
• Keen to run over and cause unnecessary alarm
• Keen to meet Lothario, tell an alarming lie
• Burst into tears upon tide rising, and give a false alarm
• Give a false warning (2 words)
• Be an alarmist
• Give false alarm to keen seducer of women