Tornado outbreaks occur when a storm system propelled by a strong, southward dip in the jet stream punches into the Plains, Midwest or South. This is accompanied by warm and humid air flowing northward out of the Gulf of Mexico. The jet stream provides deep wind shear, or changing wind speed and direction with height, supportive of rotating supercell thunderstorms. [...]
Author Archives: alalverson
16
Feb
Feb
One in a succession of winter storms is still producing heavy rain, snow and high winds in parts of New England after unleashing severe thunderstorms with embedded tornadoes across the Southeast U.S. on Jan 9 2024. At the storm's peak, 196 million people were under wind advisories, warnings and watches, including entire states from Florida to Maine, [...]
07
Nov
Nov
Article Reposted from Nick Connor Polyurethane foam insulation is available in closed-cell and open-cell formulas. Polyurethane foam can be used as cavity wall insulation or as roof insulation. Thermal Engineering Polyurethane FoamPolyurethane foam (PUR) is a closed cell thermoset polymer. Polyurethane polymers are traditionally and most commonly formed by reacting a di- or poly-isocyanate with a polyol. Polyurethane [...]
06
Nov
Nov
Air sealing and insulation are two essential components of energy-efficient and comfortable buildings. They serve different but complementary purposes in improving the energy performance and comfort of a structure. Here's a breakdown of each: Air Sealing: Purpose: Air sealing refers to the process of sealing gaps, cracks, and openings in a building's envelope to prevent [...]
06
Nov
Nov
Improve Weather and Storm Resistance Severe weather events can wreak serious damage to buildings. Independent post-hurricane surveys of roof systems by NIST 1 and RICOWI 2 found that SPF roofs perform extremely well. Researchers noted SPF’s high performance in moisture prevention, keeping the roofs intact and providing protection from hail and debris. SPF roofing systems tenaciously bond [...]