MANILA: Generally fair weather will continue to prevail across the country due to the easterlies, the weather bureau said Wednesday.The easterlies could also cause isolated rain showers or thunderstorms, the Philippine Atmospheric, Geophysical and Astronomical Services Administration (PAGASA) said.It added that severe thunderstorms could result in flash floods or landslides.The heat index could peak at 46 degrees in Virac (Synop), Catanduanes; Roxas City, Capiz; Butuan City, Agusan del Norte.Heat indices of 42 to 45 degrees are also forecast in the following areas:NAIA, Pasay CityScience Garden, Quezon City, Metro ManilaLaoag City, Ilocos NorteDagupan City, PangasinanAparri, CagayanSangley Point, CaviteAmbulong, Tanauan, BatangasIloilo City, IloiloBacnotan, La UnionTuguegarao City, CagayanISU, Echague, IsabelaIba, ZambalesSan Jose, Occidental MindoroPuerto Princesa City, PalawanAborlan, PalawanCuyo, PalawanDumangas, IloiloCatarman, Northern SamarGuiuan, Eastern Sa marMaasin, Southern LeyteZamboanga City, Zamboanga del SurMMSU, Batac, Ilocos NorteCLSU Munoz, Nueva EcijaCubi Point, Subic Bay, Olongapo CityCoron, PalawanDaet, Camarines NorteMasbate City, MasbateLa Granja, La Carlota, Negros OccidentalSiquijor, SiquijorCatbalogan, SamarDipolog, Zamboanga del NorteSinait, Ilocos SurCalayan, CagayanCasiguran, AuroraAlabat, QuezonMulanay, QuezonLegazpi City, AlbayMambusao, CapizTacloban City, LeyteVSU-Baybay, LeyteBorongan, Eastern SamarUnder danger level or 41°C to 51°C heat indices, heat cramps, and heat exhaustion are likely.Continued exposure could also cause heat stroke.Meanwhile, the whole archipelago will continue to experience light to moderate winds and slight to moderate seas, PAGASA said.Source: Philippines News Agency