Document: 6885 | Created: 09:40 09/28/2021 UTC | Page: 01
Description: VOLC | Ash Cloud Forecast       | Washington VAAC|
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FVXX21 KNES 280311
VA ADVISORY
DTG: 20210928/0311Z

VAAC: WASHINGTON

VOLCANO: REVENTADOR 352010
PSN: S0004 W07739

AREA: ECUADOR

SUMMIT ELEV: 11686 FT (3562 M)

ADVISORY NR: 2021/828

INFO SOURCE: GOES-16. NWP MODELS. VOLCAT.

ERUPTION DETAILS: NEW VA EM ARND 0200Z

OBS VA DTG: 28/0250Z

OBS VA CLD: SFC/FL150 N0004 W07747 - S0004 W07739
- S0006 W07740 - S0000 W07751 - N0004 W07747 MOV
NW 15KT

FCST VA CLD +6HR: 28/0900Z SFC/FL150 N0005 W07751
- S0004 W07739 - S0006 W07740 - S0001 W07756 -
N0005 W07751

FCST VA CLD +12HR: 28/1500Z SFC/FL150 N0004
W07754 - S0004 W07739 - S0006 W07739 - S0002
W07758 - N0004 W07754

FCST VA CLD +18HR: 28/2100Z SFC/FL150 N0004
W07755 - S0004 W07739 - S0006 W07740 - S0002
W07758 - N0004 W07755

RMK: VA OBS IN STLT ARND 0200Z MVG NW AT 15KT BLW
FL 150. ASH DISPS BEYOND 30NMI. NWP MODELS
SUPPORT CONT NW MVMNT THRU T+18HR. ...RAMIREZ

NXT ADVISORY: WILL BE ISSUED BY 20210928/0915Z

FVXX25 KNES 280446
VA ADVISORY
DTG: 20210928/0446Z

VAAC: WASHINGTON

VOLCANO: SANGAY 352090
PSN: S0200 W07820

AREA: ECUADOR

SUMMIT ELEV: 17159 FT (5230 M)

ADVISORY NR: 2021/840

INFO SOURCE: GOES-16. NWP MODELS.

ERUPTION DETAILS: LGT VA EM AT 28/0220Z

OBS VA DTG: 28/0430Z

OBS VA CLD: SFC/FL200 S0156 W07831 - S0159 W07819
- S0202 W07819 - S0201 W07832 - S0156 W07831 MOV
W 20KT

FCST VA CLD +6HR: 28/1030Z NO VA EXP

FCST VA CLD +12HR: 28/1630Z NO VA EXP

FCST VA CLD +18HR: 28/2230Z NO VA EXP

RMK: LGT VA EM OBS IN STLT BEGINNING ARND 0220Z
MOVG W AT APPROX 20 KT BLW FL200. ASH DISSIPATED
WITHIN 25NMI FM THE SUMMIT. VA ACT REMAINS
SLGHTLY ELEVD.  ...RAMIREZ

NXT ADVISORY: WILL BE ISSUED BY 20210928/1045Z

FVXX22 KNES 280702
VA ADVISORY
DTG: 20210928/0702Z

VAAC: WASHINGTON

VOLCANO: POPOCATEPETL 341090
PSN: N1901 W09837

AREA: MEXICO

SUMMIT ELEV: 17802 FT (5426 M)

ADVISORY NR: 2021/586

INFO SOURCE: GOES-16. WEBCAM.

ERUPTION DETAILS: LGT VA EMS PSBL

OBS VA DTG: 28/0651Z

OBS VA CLD: SFC/FL190 N1909 W09841 - N1902 W09836
- N1859 W09838 - N1907 W09846 - N1909 W09841 MOV
NW 15KT

FCST VA CLD +6HR: 28/1300Z NO VA EXP

FCST VA CLD +12HR: 28/1900Z NO VA EXP

FCST VA CLD +18HR: 29/0100Z NO VA EXP

RMK: FAINT VA IS OBS IN STLT EXTDG NW FM SUMMIT
BLW FL190. WEBCAM SHOWS FQT INCANDESCENCE ASSOC W
LGT COLORED PLUMES THAT LKLY CONTAIN VA.
...RAMIREZ

NXT ADVISORY: WILL BE ISSUED BY 20210928/1300Z

FVXX21 KNES 280903
VA ADVISORY
DTG: 20210928/0903Z

VAAC: WASHINGTON

VOLCANO: REVENTADOR 352010
PSN: S0005 W07739

AREA: ECUADOR

SUMMIT ELEV: 11686 FT (3562 M)

ADVISORY NR: 2021/829

INFO SOURCE: GOES-16. NWP MODELS.

ERUPTION DETAILS: CONT VA EM OBS IN STLT

OBS VA DTG: 28/0840Z

OBS VA CLD: SFC/FL150 N0004 W07749 - S0004 W07739
- S0005 W07740 - S0001 W07755 - N0004 W07749 MOV
NW 15KT

FCST VA CLD +6HR: 28/1430Z SFC/FL150 N0006 W07753
- S0004 W07739 - S0005 W07740 - S0001 W07758 -
N0006 W07753

FCST VA CLD +12HR: 28/2030Z SFC/FL150 N0006
W07753 - S0004 W07739 - S0005 W07739 - S0000
W07757 - N0006 W07753

FCST VA CLD +18HR: 29/0230Z NO VA EXP

RMK: VA OBS IN STLT MOVG NW FM SUMMIT AT APPROX
15KT BLW FL150. ASH EXTDS FOR 25NMI BFR BECOMG
TOO DIFF TO DETECT. NWP MODELS SUPPORT CONT
NW-WARD MVMNT. ...RAMIREZ

NXT ADVISORY: WILL BE ISSUED BY 20210928/1500Z