"Meteorite shower", implying more than one object source entered the atmosphere at more or less the same time, resulting in parts of the objects
ending up on the ground, sounds unlikely to me. Although not impossible, an event like this would be relatively rare.
It sounds more like there was a single object, which broke up at altitude, showering the ground below with meteorites, which does happen on a regular
basis:
Meteorites are known to fall as single, discreet objects; as showers of fragments from a meteor which breaks up during the atmospheric portion of
its flight; and (rarely) as multiple individual falls. The initial mass and composition of the meteoroid primarily determine its eventual fate,
along with its speed and angle of entry into the atmosphere.
The American Meteor Society Fireball FAQs
Or, alternatively, two or more unrelated fireballs. Not every fireball drops rocks on the ground.
Reports are often confused in cases like this, so it would not surprise me that there was just a single object that actually dropped rocks on the
ground.
For it to be a "meteorite shower" in the strictest terms, it would have to be proved that two or more discrete objects but from the same source,
entered the atmosphere, and made it to the ground, which could be done in two ways. Either finding two discrete "strewn fields" composed of exactly
the same type of meteorites, or by photographing the fireballs from two locations, which allows the orbit and therefore a possible source for the
shower to be identified
Regarding the sounds and vibrations picked up by the seismographs - it may just be the sonic boom that is created when a meteorite or meteorites falls
to the ground, which is common in cases like this. Objects very rarely make it down low enough to leave any kind of crater, and in this case, multiple
meteorites hitting people's roofs suggests the object broke up at high altitude, showering a large area with fragments.
A meteoroid which disintegrates tends to immediately lose the balance of its cosmic velocity because of the lessened momentum of the remaining
fragments. The fragments then fall on ballistic paths, arcing steeply toward the earth. The fragments will strike the earth in a roughly elliptical
pattern (called a distribution, or dispersion ellipse) a few miles long, with the major axis of the ellipse being oriented in the same direction as
the original track of the meteoroid. The larger fragments, because of their greater momentum, tend to impact further down the ellipse than the smaller
ones. These types of falls account for the “showers of stones” that have been occasionally recorded in history. Additionally, if one
meteorite is found in a particular area, the chances are favorable for there being others as well.
The American Meteor Society Fireball FAQs
i would love to come across a smokey crater with a smoldering rock laying in the centre. Reminds me of Transformers for some reason 
