RSS feed source: US National Weather Service

TORLZK The National Weather Service in Little Rock has issued a * Tornado Warning for… Northwestern Clark County in southwestern Arkansas… Northeastern Pike County in southwestern Arkansas… Southwestern Garland County in central Arkansas… West central Hot Spring County in southwestern Arkansas… Southeastern Montgomery County in western Arkansas… * Until 800 PM CDT. * At 717 PM CDT, a severe thunderstorm capable of producing a tornado was located over Amity, or 18 miles northeast of Murfreesboro, moving northeast at 40 mph. HAZARD…Tornado and quarter size hail. SOURCE…Radar indicated rotation. IMPACT…Flying debris will be dangerous to those caught without shelter. Mobile homes will be damaged or destroyed. Damage to roofs, windows, and vehicles

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RSS feed source: US National Weather Service

* WHAT…The South Coast AQMD has issued an air quality alert due to harmful levels of particle pollution from windblown dust. * WHERE…in the Coachella Valley. Levels of particle pollution can vary by time and location depending on emissions and local weather conditions. * WHEN…until Saturday evening. * IMPACTS… Particle pollution can get deep into the lungs and cause serious health problems such as asthma attacks, heart and lung disease symptoms, and increased risk of lung infections. Everyone can be affected, but sensitive groups such as people with lung or heart disease, older adults, people who are pregnant, children, and those who spend a lot of time outdoors are at greater

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RSS feed source: US National Weather Service

Background:

Volcán Popocatépetl, whose name is the Aztec word for smoking mountain, towers to 5426 m 70 km SE of Mexico City to form North America’s 2nd-highest volcano.  The glacier-clad stratovolcano contains a steep-walled, 250-450 m deep crater.  The generally symmetrical volcano is modified by the sharp-peaked Ventorrillo on the NW, a remnant of an earlier volcano. 
At least three previous major cones were destroyed by gravitational failure during the Pleistocene, producing massive debris-avalanche deposits covering broad areas south of the volcano.  The modern volcano was constructed to the south of the late-Pleistocene to Holocene El Fraile cone.  Three major plinian eruptions, the most recent of which took place about 800 AD, have occurred from Popocatépetl since the mid Holocene, accompanied by pyroclastic flows and voluminous lahars that swept basins below the volcano.  Frequent historical eruptions, first recorded in Aztec codices, have occurred since precolumbian

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