The National weather service of Mauritius name the storm should it intensify into a moderate tropical storm between 55 Â E and 90 Â E ; if the storm should intensify into a moderate tropical storm between 30 Â E and 55 Â E then the national weather service of Madagascar assigns the appropriate name to the storm . The Sub-Regional Tropical Cyclone Advisory Center in Mauritius names the storm should it intensify into a moderate tropical storm between 55 Â E and 90 Â E ; if the storm should intensify into a moderate tropical storm between 30 Â E and 55 Â E then the Sub-Regional Tropical Cyclone Advisory Center in Madagascar assigns the appropriate name to the storm .