January 31 – February 2, 2011 North American blizzard fell as freezing rain in the Philadelphia suburbs, a mixture of sleet and freezing rain in Berks County and the Lehigh Valley and mainly a snow and sleet mixture in the Poconos. Overnight colder air moved in aloft in over the Poconos and precipitation changed back to all snow for a few hours. Toward sunrise on the 2nd, this process started to reverse at both the surface and aloft. Warmer air was moving north again and the freezing rain changed to plain rain across the Philadelphia suburbs and Berks County around 8 a.m. EST and the Lehigh Valley around 9
Explosion-proof enclosure ingress of sleet, snow, dust, dirt, and rain. In addition to the features and benefits that accompany Type 1 and Type 2, this make offers a much higher resistance to rain, sleet, snow, dust, and extreme weather conditions. Offers protection against hazardous parts and guards the equipment from getting damaged by solid foreign objects. Type 3S enclosures can be used both indoors and outdoors to keep electrical equipment from deteriorating due to the ingress of rain, snow and sleet and functional flaws even when it is fully covered with ice. Over and above the protection offered by Type 3R, these