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Archive for February 21st, 2014

Derisory “Yellow Alert” as Brown Smog Bears on Beijing

Posted by feww on February 21, 2014


Hazardous Smog in China to Last for a Week: Officials

Beijing authorities on Thursday issued a derisory “Yellow Alert” for the Chinese Capital as heavy air pollution enveloped the region. The smog, previously described as “Apocalyptic” by the residents, is forecast to last for a week.

“Beijing, its neighbors Tianjin and Hebei Province, as well as central and western Shandong Province can expect heavy air pollution to linger for a week, according to a joint weather forecast issued by the China Meteorological Administration [CMA] and the Ministry of Environmental Protection,” said a report.

CMA believes the smog will last for a week because there is no cold front in sight to help disperse it, said the report.

PM 2.5 AQI had risen to 374 and PM10 concentration was hovering above 160µgm–³, as of posting.

Pollution levels below 15.4µgm–³ (AQI of up to 50) are considered as “safe.”

A formula for calculating the AQI from the concentrations of various air pollutants (PM10, PM2.5, O3, CO, SO2, NO2 …)  is posted HERE.

) as “safe.”

“Yellow” is the 2nd lowest of a four-tier alert system—red, orange, yellow, blue—indicating the severity of air pollution.

SEA AIR Pollution
Map of air pollution in SEA. Source: waqi. info

“A red alert indicates the most serious air pollution (AQI above 300) for three consecutive days. An orange alert indicates heavy to serious air pollution (AQI between 200 and 300) alternately for three consecutive days. A yellow alert means severe pollution for one day or heavy pollution for three consecutive days,” said Xinhua.

Related Links

For earlier posts on Beijing AQI, search blog content.

Posted in 2014 disaster diary, 2014 global disasters, environment, Global Disaster watch, global disasters, Significant Event Imagery, significant events | Tagged: , , , , , , | Leave a Comment »

ML4.3 Quake Strikes UK Region

Posted by feww on February 21, 2014

Seismic Hazard

Shallow earthquake strikes Bristol Channel Region UK

Richter magnitude scale 4.3 earthquake struck at a depth of 5km about 36 km S of Swansea, United Kingdom at 13:21:28UTC on February 20, 2014, according to the European-Mediterranean Seismological Center (EMSC).

Earthquake Details

  • Magnitude: ML4.3
  • Date – time: 2014-02-20 13:21:28.0 UTC
  • Location: 51.31 N ; 4.08 W
  • Depth: 5 km
  • Distances:
    • 233 km NW of Saint Peter Port, Guernsey [pop: 16,488]
    • 65 km W of Cardiff, Wales, UK [ pop: 302,139]
    • 36 km S of Swansea, United Kingdom [ pop: 170,883]
    • 11 km N of Ilfracombe, United Kingdom [pop: 10,486]

Earthquake Location Map

Euro-Med Earthquakes 24hrs
Euro-Med Earthquakes – 24 hrs to 01:44UTC on February 21, 2014. Source: EMSC

Recent UK Earthquake

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