SELECT T1.name ,  count(*) FROM storm AS T1 JOIN affected_region AS T2 ON T1.storm_id  =  T2.storm_id GROUP BY T1.storm_id
How many regions were affected by each storm?
[Schema (values) (types)]: | storm_record |  storm : storm_id (text) , name (number) , dates_active (text) , max_speed (text) , damage_millions_usd (number) , number_deaths (number) | region : region_id (text) , region_code (number) , region_name (text) | affected_region : region_id (text) , storm_id (number) , number_city_affected (text);