Sentence:  <WSD>Then</WSD> there came a reg'lar terror of a sou'wester same as you don't get one summer in a thousand, and blowed the shanty flat and ripped about half of the weir poles out of the sand. We spent consider'ble money getting 'em reset, and <WSD>then</WSD> a swordfish got into the pound and tore the nets all to slathers, right in the middle of the squiteague season. 
Meaning of the word marked with <WSD> tags:  Soon afterward.