DESCRIPTIVE TEXT NARRATIVE FOR SMOKE/DUST OBSERVED IN SATELLITE IMAGERY
THROUGH 1530Z July 21, 2007
Central North America: A large area of smoke can be seen across most of Northern and Central North America many from fires burning across the Northern Intermountain United States (ID, NV). A few pockets of dense smoke just east of Yellowstone NP and the Windriver Mtns (but still west of the Big Horns) extending from 43N north into central MT (Petroleum county). Otherwise the smoke is thin to moderate in density and covers all of E ID, MT, WY, ND, Saskatchewan, and Manitoba moving NE where it then begins to bend due S though it is moving ESEward as it rounds to the top of the upper level ridge into potions of Ontario from Hudson Bay to the northern tip of Lower MI and the eastern half of the UP of MI (between 82W and 88W). Northern Canada (Nunavut/SE NW Territories): Multiple large fires over SE NW Territories (SE of Great Slave Lake) have produced a large area of moderat to dense smoke that is moving NE over all of Nunavut but no longer covers SE NW Territories except for narrow (10-20km wide) concentrated low level plumes from the active burning now. These plumes on average extend about 50km with the smoke from western fires closer to GSL moving N to NNE...and the eastern fires near the Nunavut border moving more NE as surface and low level cyclone moves eastward just north of GSL. Gallina