Block that either give a signal streng by what storm it is example: signal streng 2 for sand storm and signal streng 15 for tornado.
Or (I hope this will be the case) a block with a gui you can control how it behaves example: redstone inverted or only sandstorm will activate it

there is already one that does that

Weather Sensor is what you're looking for

Is this issue resolved? If so, please close it to help people just like myself go through and help others ^^