From 05/04/2026 to 05/04/2026, a Tropical Storm (maximum wind speed of 194 km/h) VAIANU-26 was active in SEPacific. The cyclone affects these countries: Fiji (vulnerability Medium). Estimated population affected by category 1 (120 km/h) wind speeds or higher is 0 (0 in tropical storm).
Green notification for tropical cyclone THIRTYONE-26. Population affected by Category 1 (120 km/h) wind speeds or higher is 0 (0 in Tropical Storm).
Mayon Volcano Volcanic Ash Advisory: ERUPTION AT 20260405/0052Z FL120 EXTD WSW REPORTED OBS VA DTG: 05/0100Z
Satellite image of Mayon volcano on 5 Apr 2026
Volcanic Ash Advisory Center Tokyo (VAAC) issued the following report:
FVFE01 at 01:15 UTC, 05/04/26 from RJTD
VA ADVISORY
DTG: 20260405/0115Z
VAAC: TOKYO
VOLCANO: MAYON 273030
PSN: N1315 E12341
AREA: PHILIPPINES
SOURCE ELEV: 2462M AMSL
ADVISORY NR: 2026/438
INFO SOURCE: HIMAWARI-9 PHIVOLCS
ERUPTION DETAILS: ERUPTION AT 20260405/0052Z FL120 EXTD WSW REPORTED
OBS VA DTG: 05/0100Z
OBS VA CLD: VA NOT IDENTIFIABLE FM SATELLITE DATA WIND FL120 070/5KT
FCST VA CLD +6 HR: NOT AVBL
FCST VA CLD +12 HR: NOT AVBL
FCST VA CLD +18 HR: NOT AVBL
RMK: WE WILL ISSUE FURTHER ADVISORY IF VA IS DETECTED IN SATELLITE
IMAGERY.
NXT ADVISORY: NO FURTHER ADVISORIES=
Sangay Volcano Volcanic Ash Advisory: VA EM DETECTED to 20500 ft (6200 m)
Explosive activity continues. Volcanic Ash Advisory Center (VAAC) Washington warned about a volcanic ash plume that rose up to estimated 20500 ft (6200 m) altitude or flight level 205 .
The full report is as follows:
FVXX21 at 20:46 UTC, 04/04/26 from KNES
VA ADVISORY
DTG: 20260404/2044Z
VAAC: WASHINGTON
VOLCANO: SANGAY 352090
PSN: S0200 W07820
AREA: ECUADOR
SOURCE ELEV: 17342 FT AMSL
ADVISORY NR: 2026/366
INFO SOURCE: GOES-19. VONA. NWP MODELS.
ERUPTION DETAILS: VA EM DETECTED
OBS VA DTG: 04/2000Z
OBS VA CLD: SFC/FL205 S0159 W07820 – S0202 W07819
– S0220 W07834 – S0209 W07843 – S0159 W07820 MOV
SW 10KT
FCST VA CLD +6HR: 05/0200Z SFC/FL205 S0159 W07820
– S0202 W07818 – S0231 W07842 – S0216 W07858 –
S0159 W07820
FCST VA CLD +12HR: 05/0800Z SFC/FL205 S0159
W07820 – S0202 W07818 – S0226 W07852 – S0207
W07902 – S0159 W07820
FCST VA CLD +18HR: 05/1400Z SFC/FL205 S0158
W07902 – S0159 W07820 – S0202 W07819 – S0217
W07859 – S0158 W07902
RMK: VONA RCVD EARLIER FOR VA EM AND OBS IN STLT
IMG MOVNG SW FM SUMMIT. EXP MOVNT SHIFT FM SW TO
W THRU T+18 HRS. FL BSD ON VONA. FCST BSD ON NWP
MDLS. …LINER
NXT ADVISORY: WILL BE ISSUED BY 20260405/0245Z