Document: 6885 | Created: 13:15 04/21/2021 UTC | Page: 01 Description: VOLC | Ash Cloud Forecast | Washington VAAC| _______________________________________________________________________ FVXX20 KNES 210604 VA ADVISORY DTG: 20210421/0604Z VAAC: WASHINGTON VOLCANO: SANGAY 352090 PSN: S0200 W07820 AREA: ECUADOR SUMMIT ELEV: 17159 FT (5230 M) ADVISORY NR: 2021/398 INFO SOURCE: GOES-16. NWP MODELS. ERUPTION DETAILS: CONTG CONS VA EMS. OBS VA DTG: 21/0540Z OBS VA CLD: SFC/FL220 S0158 W07820 - S0201 W07818 - S0224 W07905 - S0210 W07912 - S0158 W07820 MOV SW 5KT FCST VA CLD +6HR: 21/1130Z SFC/FL220 S0158 W07819 - S0201 W07819 - S0223 W07923 - S0206 W07925 - S0158 W07819 FCST VA CLD +12HR: 21/1730Z SFC/FL220 S0150 W07926 - S0158 W07820 - S0201 W07820 - S0208 W07927 - S0150 W07926 FCST VA CLD +18HR: 21/2330Z NO VA EXP RMK: EARLIER VA TO FL250 DSIPTD. CONTG CONS VA OBS EXT WSW AT LEAST 50 NM FM SUMMIT. WX CLDS MAY OBSC PORTION OF VA PLUME. FL MVMT FCST TO TURN TO W BY T+12 HRS. ...CLARK NXT ADVISORY: WILL BE ISSUED BY 20210421/1200Z FVXX21 KNES 210638 VA ADVISORY DTG: 20210421/0638Z VAAC: WASHINGTON VOLCANO: POPOCATEPETL 341090 PSN: N1901 W09837 AREA: MEXICO SUMMIT ELEV: 17802 FT (5426 M) ADVISORY NR: 2021/384 INFO SOURCE: GOES-16. WEBCAM. NWP MODELS. ERUPTION DETAILS: OCNL VA EMS. OBS VA DTG: 21/0626Z OBS VA CLD: SFC/FL200 N1910 W09829 - N1906 W09826 - N1901 W09837 - N1902 W09837 - N1910 W09829 MOV NE 10KT FCST VA CLD +6HR: 21/1230Z SFC/FL200 N1911 W09811 - N1902 W09811 - N1901 W09837 - N1902 W09837 - N1911 W09811 FCST VA CLD +12HR: 21/1830Z NO VA EXP FCST VA CLD +18HR: 22/0030Z NO VA EXP RMK: EARLIER REMNANT VA E OF SUMMIT DSIPTD. NEW EM TO FL200 OBS IN SAT AND WEBCAM EXT 10 NM NE FM SUMMIT. OBS VA FL ESTD FM NWP MDLS. FL MVMT FCST TO TURN TO E BY T+6 HRS. ...CLARK NXT ADVISORY: WILL BE ISSUED BY 20210421/1245Z FVXX22 KNES 210907 VA ADVISORY DTG: 20210421/0907Z VAAC: WASHINGTON VOLCANO: REVENTADOR 352010 PSN: S0004 W07739 AREA: ECUADOR SUMMIT ELEV: 11686 FT (3562 M) ADVISORY NR: 2021/298 INFO SOURCE: GOES-16. WEBCAM. ERUPTION DETAILS: VA NOT OBS IN SAT. OBS VA DTG: 21/0840Z OBS VA CLD: VA NOT IDENTIFIABLE FM SATELLITE DATA FCST VA CLD +6HR: 21/1430Z NO VA EXP FCST VA CLD +12HR: 21/2030Z NO VA EXP FCST VA CLD +18HR: 22/0230Z NO VA EXP RMK: VA NOT OBS IN SAT SINCE PREV ADVISORY DUE TO WX CLD OBSCN. WEBCAM SHOWS FAINT INCANDESCENCE BUT LITTLE OTHER ACT. ...CLARK NXT ADVISORY: NO FURTHER ADVISORIES FVXX23 KNES 210940 VA ADVISORY DTG: 20210421/0940Z VAAC: WASHINGTON VOLCANO: FUEGO 342090 PSN: N1428 W09052 AREA: GUATEMALA SUMMIT ELEV: 12346 FT (3763 M) ADVISORY NR: 2021/338 INFO SOURCE: GOES-16. WEBCAM. NWP MODELS. VOLCAT. ERUPTION DETAILS: CONTG OCNL VA EMS. OBS VA DTG: 21/0920Z OBS VA CLD: SFC/FL150 N1429 W09053 - N1429 W09052 - N1414 W09055 - N1416 W09101 - N1429 W09053 MOV SW 10KT FCST VA CLD +6HR: 21/1530Z SFC/FL150 N1429 W09052 - N1428 W09052 - N1409 W09102 - N1414 W09108 - N1429 W09052 FCST VA CLD +12HR: 21/2130Z NO VA EXP FCST VA CLD +18HR: 22/0330Z NO VA EXP RMK: VA CLD OBS 15 NM SSW OF SUMMIT. WX CLDS MAY PARTIALLY OBSC SOME VA AREAS. OBS VA FL BASED ON NWP MDLS AND VOLCAT ALERTS. FL WINDS EXP TO VEER SLIGHTLY THRU T+6 HRS. ...CLARK NXT ADVISORY: WILL BE ISSUED BY 20210421/1545Z FVXX20 KNES 211149 VA ADVISORY DTG: 20210421/1149Z VAAC: WASHINGTON VOLCANO: SANGAY 352090 PSN: S0200 W07820 AREA: ECUADOR SUMMIT ELEV: 17159 FT (5230 M) ADVISORY NR: 2021/399 INFO SOURCE: GOES-16. NWP MODELS. ERUPTION DETAILS: CONS VA EMS. OBS VA DTG: 21/1120Z OBS VA CLD: SFC/FL190 S0151 W07822 - S0202 W07818 - S0201 W07820 - S0153 W07826 - S0151 W07822 MOV N 10KT FCST VA CLD +6HR: 21/1730Z SFC/FL190 S0143 W07812 - S0201 W07818 - S0203 W07820 - S0147 W07833 - S0143 W07812 FCST VA CLD +12HR: 21/2330Z SFC/FL190 S0137 W07824 - S0144 W07801 - S0202 W07818 - S0202 W07821 - S0137 W07824 FCST VA CLD +18HR: 22/0530Z SFC/FL190 S0135 W07834 - S0138 W07803 - S0202 W07818 - S0203 W07820 - S0135 W07834 RMK: VA EXTDS 10 NMI NNW OF THE SUMMIT ON G16 STLT DATA. NWP MDLS DO NOT AGREE WITH OBS SO CONFDC LOW IN FCSTS. ...HOSLEY NXT ADVISORY: WILL BE ISSUED BY 20210421/1745Z FVXX22 KNES 211215 VA ADVISORY DTG: 20210421/1215Z VAAC: WASHINGTON VOLCANO: REVENTADOR 352010 PSN: S0005 W07739 AREA: ECUADOR SUMMIT ELEV: 11686 FT (3562 M) ADVISORY NR: 2021/299 INFO SOURCE: GOES-16. VONA. WEBCAM. NWP MODELS. ERUPTION DETAILS: INTMT VA CLD EMS. OBS VA DTG: 21/1150Z OBS VA CLD: SFC/FL155 N0004 W07752 - S0005 W07739 - S0005 W07740 - S0004 W07755 - N0004 W07752 MOV W 10KT FCST VA CLD +6HR: 21/1800Z SFC/FL155 N0008 W07737 - N0002 W07726 - S0005 W07739 - S0005 W07740 - N0008 W07737 FCST VA CLD +12HR: 22/0000Z NO VA EXP FCST VA CLD +18HR: 22/0600Z NO VA EXP RMK: VONA RPRTS VA CLD AT 1109Z MOVG NW. WEBCAM SHOWS VRY SML VA CLD AT 1058Z AND THE VONA RPRTD VA CLD AT 1108Z AND SUGGESTS WNW MOVMT. NWP MDLS AGREE AND FCST VA TO MOV NE AT T+6. ...HOSLEY NXT ADVISORY: WILL BE ISSUED BY 20210421/1815Z FVXX21 KNES 211244 VA ADVISORY DTG: 20210421/1244Z VAAC: WASHINGTON VOLCANO: POPOCATEPETL 341090 PSN: N1901 W09837 AREA: MEXICO SUMMIT ELEV: 17802 FT (5426 M) ADVISORY NR: 2021/385 INFO SOURCE: GOES-16. WEBCAM. NWP MODELS. ERUPTION DETAILS: INTMT VA EMS. OBS VA DTG: 21/1226Z OBS VA CLD: SFC/FL210 N1902 W09828 - N1857 W09829 - N1900 W09838 - N1902 W09838 - N1902 W09828 MOV E 10KT FCST VA CLD +6HR: 21/1830Z SFC/FL210 N1905 W09814 - N1855 W09814 - N1859 W09838 - N1901 W09840 - N1905 W09814 FCST VA CLD +12HR: 22/0030Z NO VA EXP FCST VA CLD +18HR: 22/0630Z NO VA EXP RMK: VA EM OBSD STARTING AT 1143Z IN WEBCAM. VA EXTDS 7 NMI ESE FM SUMMIT. EARLIER VA EM MOVD 18 NMI ENE BFR DISPG. NW MDLS FCST LTLCG IN WINDS THRU T+6. ...HOSLEY NXT ADVISORY: WILL BE ISSUED BY 20210421/1845Z