Smoke Aloft Over Baltimore; Moderate AQI Levels in Ohio River Valley and Northeastern States

Today’s UMBC (Figure 1) lidar timeseries shows remnant smoke, between 2500-3000 meters, from the Canadian fires in the morning hours. The boundary layer reached max heights of 1900 m, and was cloud capped (red returns around 1900 m from 16:30-20:00 UTC) from 12:30-4:00 pm (local time).

Figure 1. UMBC 1064 nm Lufft CHM15k timeseries

NOAA’s Hazard Mapping System Fire and Smoke Product continues to report smoke from wildfire activity throughout Alaska and Canada. The smoke continues to produce a large areas of varying density. This smoke covers an area extending from the easternmost portions of Russia into the Yukon and from the Brooks Range in northern Alaska to Juneau and northwestern British Columbia. The most dense smoke resides from over Anchorage into much of central and southwestern Yukon. The smoke (Figure 2) can be seen in the VIIRS true color image (Figure 2) over the Atlantic Ocean (gray plumes).

Figure 2. VIIRS True Color Image for July 10, 2019.

Moderate AQI Levels were reported in the Ohio River Valley, Northeastern States and Gulf States, as shown in EPA’s Airnow Air Quality Index animation (Figure 3).

EPA Airnow AQI animation for July 10, 2019.

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