FVXX20 KNES 171946
VA ADVISORY
DTG: 20130817/1946Z

VAAC: WASHINGTON

VOLCANO: POPOCATEPETL 1401-09
PSN: N1901 W09837

AREA: MEXICO

SUMMIT ELEV: 17802 FT (5426 M)

ADVISORY NR: 2013/237

INFO SOURCE: MEXICO CITY MWO. GOES-13. GFS WINDS.
VOLCANO WEB CAMERA. CENAPRED. 

ERUPTION DETAILS: CONTINUOUS PLUME OF GASES AND
LIGHT ASH

OBS VA DTG: 17/1845Z

OBS VA CLD: SFC/FL250 N1904 W09836 - N1841 W09858
- N1825 W09919 - N1849 W09935 - N1904 W09908 -
N1904 W09836 MOV SW 20KT 

FCST VA CLD +6HR: 18/0100Z SFC/FL250 N1911 W09909
- N1905 W09836 - N1852 W09840 - N1812 W09923 -
N1721 W10108 - N1747 W10130 - N1829 W10036 -
N1911 W09909 

FCST VA CLD +12HR: 18/0700Z SFC/FL250 N1906
W09837 - N1855 W09841 - N1828 W09913 - N1716
W10058 - N1737 W10133 - N1807 W10104 - N1857
W09925 - N1906 W09837 

FCST VA CLD +18HR: 18/1300Z SFC/FL250 N1905
W09837 - N1824 W09911 - N1713 W10044 - N1756
W10109 - N1856 W09924 - N1905 W09837 

RMK: UPDATE DUE TO PLUME SPEED AND FANNING AS
WINDS SHEAR DOWNWIND. ASH DENSITY LESS WITH TIME.
EDGES DISPG BUT SOURCE CONSTANT.   ...SWANSON

NXT ADVISORY: WILL BE ISSUED BY 20130818/0145Z