Giant worm encounter

Encounter 1 (outdoor)

Suddenly, you feel a tremor in the ground. Barely noticeable at first, dogs start barking and running, it rises to an audible crunching / grinding sound. Neably townsfolk scream and run for cover in all directions, panicked tears stream down the faces of nearby childred. some run inside the nearest buildings and collide with those fleeing the building with whatever valuables they can grab. The horses on a nearby cart bolt and career wildly down the street, crushing any unfortunate enough to be in the path...

In seconds, the area is empty of those able to flee, and the grinding, churning sound fills the air like a mighty storm. Suddenly the ground around you explodes, cobbles showering everywhere [dex save or get knocked prone within 5 feet and take 1d4 crushing, dex save or take 1d4 crushing if ove 5 fet away]. a blood curdling, inhuman screech emanates from the hideous creature you now see before you. Towering 15 feet high, it bends its long, segmented body around, tasting the air with its gigantic multi toothed maw fringed with writhing tentacles.]

ROLL INITIATIVE!!

Encounter 2 (indoor)

check everyones passive perception, over 14 notices motes of dust dislodging themselves from the ceiling

you hear a roll of thunder... but there are no clouds outside. the thunder continues, the walls shake [neaby NPCs swear and pray, or arm themselves] then with a splintering crash the boards erupt below you, spewing mud, timber, and dust in all directions. Part of the wal comes down. The worm forces its uglt head into the room into the room

Encounter 3