Assertion: thunderstorm | /r/CapableOf | remain under severe criteria
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text: If conditions are no longer favorable for tornadoes in the watch area, the severe thunderstorm watch may be cancelled outright; if no thunderstorm activity occurs or if thunderstorms that develop remain under severe criteria, this leads to a severe thunderstorm watch "bust", which may also factor into the Storm Prediction Center's decision as to whether to cancel the watch.