HP Storm
or HP Supercell - High-Precipitation storm (or High-Precipitation supercell). A supercell thunderstorm in which heavy precipitation (often including hail) falls on the trailing side of the mesocyclone.
HP Storm or HP Supercell - High-Precipitation storm (or High-Precipitation supercell). A supercell thunderstorm in which heavy precipitation (often including hail) falls on the trailing side of the mesocyclone (Fig. 3).
An HP storm in Fort Worth, Texas, produced almost 5 inches of rain within one hour, with most of the rain falling within 45 minutes. Some indications are that HP storms might be somewhat more frequent in the southeast U.S.
Unlike most classic supercells, the region of rotation in many HP storms develops in the front-flank region of the storm (i.e., usually in the eastern portion).
Supercell thunderstorms often exhibit inflow notches, usually in the right quadrant of a classic supercell, but sometimes in the eastern part of an HP storm or in the rear part of a storm (rear inflow notch).
MESOMesocyclone- A storm-scale region of rotation, typically around 2-6 miles in diameter and often found in the right rear flank of a supercell (or often on the eastern, or front, flank of an HP storm).
Storms exhibiting these characteristics are often called classic supercells; however HP storms and LP storms are also supercell varieties.
A supercell thunderstorm in inland Queensland.
Supercooled water ...
This area often coincides with a radar hook echo and/or mesocyclone, especially one associated with an HP storm. The term reflects the danger involved in observing such an area visually, which must be done at close range in low visibility.
BEARS CAGE - The rain-free region on the backside of a supercell thunderstorm, often wrapped with the rain hook, and an extremely dangerous place to be chasing into because the constant threat of a tornado. In some HP storms, ...
NOAA National Weather Service - Cite This Source - This Definition
Browse Related Terms: Energy Helicity Index, Hook Echo, HP Storm, LP Storm, Supercell, Supercell Thunderstorm, Tilted Storm, Tilted Updraft ...
flanking line, overshooting top, and back-sheared anvil, all of which normally are observed in or near the right rear or southwest part of the storm. Storms exhibiting these characteristics often are called classic supercells; however HP storms and ...
 See also: Supercell, Storm, Tornado, Precipitation, Cloud
  
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