Bob's Discount, a 4-0 store, and a Five Below all catch light in sequence — smokers, most likely
At 15:35, Amherst Fire dispatched on a mulch fire in front of 3058 Sheridan Drive[*], at Bob's Discount Furniture between Niagara Falls Boulevard and Delta Road. Crews handled it, went back in service — and within the same hour dispatch called the same crew across the strip twice more.
At 16:00, Amherst Fire reported “there's another one at 4-0, can you come this way,” then at 16:00:26 added “there's another mulch fire in front of 5 Below. We're going to stop for now.” By 16:08 the units were back in service. No structures involved; the fires were in landscaping beds against retail building exteriors, the standard signature of a discarded cigarette hitting dry summer mulch.
Amherst Fire had already been running a mulch-fire pattern earlier in the week; today's three in thirty minutes is a nine-day heat-wave signature, not arson.
[*] = a name the scanner audio left uncertain and could not be confirmed against an official source; treat as unverified. Routine street-name fixes against official municipal lists are applied silently.