Two men aged 23 were arrested on suspicion of being concerned in the supply of a controlled drug and have been bailed.
Six men aged 19 to 22 were taken to hospital overnight from a house at Ripon Gardens in Newcastle. One of the men is critically ill. Police believe the six had taken a hallucinogenic drug.
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Over 50 fire officers and eight fire engines are dealing with flooding across Scarborough.
Police in Whitby are appealing for information to help identify the man in the CCTV image. They want to confirm he is safe and well.
Worst hit was low-lying Fishergate, which was left under almost a foot of water as drains failed to cope with the cloudburst.