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From: Dan Richter (1:317/3)
To: All
Date: Fri, 11.06.21 13:00
MODIS Pic of the Day 11 June 2021
June 11, 2021 - Fires in Arizona



Dry weather, high temperatures, and extremely low humidity brought
conditions ripe for wildfire across southern Arizona in early June
2021. On June 10, the Moderate Resolution Imaging Spectroradiometer
(MODIS) on board NASA’s Terra satellite acquired a true-color image of
several large blazes in southeastern Arizona.

Each red “hot spot” marks an area where the thermal bands on the
instrument detected high temperatures. When combined with typical
smoke, as in this image, such hot spots are diagnostic for actively
burning fire. A single large fire may have several hot spots,
especially as fire is spreading in several directions or where the fuel
at the center has been burnt, leaving fresh fuel (and active fire) only
at the edges. Two major fires are seen in this image: the Telegraph
Fire and the Mescal Fire.

The western fire is the Telegraph Fire, a fast-moving and dynamic fire
that as of June 10 has burnt 84,860 acres of shrub and grass one mile
southeast of Superior and one mile away from Top-of-the-World, Arizona.
Evacuations have been ordered for parts of Top-of-the-World, Superior,
Claypool, Miami, and Globe as firefighters focus on protecting lives,
as well as public and private property. The fire ignited the afternoon
of June 4 and is classified as human in origin. It is only 34 percent
contained, with full containment date expected to be June 20. The exact
cause is under investigation.

The Mescal Fire ignited on June 1 in the Mescal Mountains about 12
miles southeast of Globe and 7 miles northeast of Dripping Springs. As
of the morning of June 10, it had burned 72,250 acres of desert brush,
oak, and grasses. According to Inciweb Incident Information System,
fire activity has reduced to moderate over the course of the last 24
hours as fire spread has reached most containment lines. The Mescal
fire is considered 23 percent contained and is expected to reach 100
percent containment on June 30. At this time, several previously
evacuated communities are being permitted to return home. However,
temperatures are expected to range from the mid-90s to 101 degrees with
11-16 mph sustained winds. Combined with a relative humidity of only 3
percent, conditions continue to support a high potential for rapid
return of active fire behavior. The start of the Mescal Fire is under

Image Facts
Satellite: Terra
Date Acquired: 6/9/2021
Resolutions: 1km (11.3 KB), 500m (40.6 KB), 250m (139.1 KB)
Bands Used: 1,4,3
Image Credit: MODIS Land Rapid Response Team, NASA GSFC

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