cdcollura
EF5
Good day all,
This is a concept of "what goes up, must come down".
I see many non-supercell storms, especially in places like Florida during the summer, and SW US, produce exceptionally strong down burst winds during their later stages (before dissapation).
I am thinking that the low shear environment, and high CAPE / moisture content allows the storm to build and precip-load (where precipitation is held up by the strong updraft) until a "tipping-point" is reached, and it call comes "down in one shot".
In most cases in a supercell storm, the heavy precipitation is dumped AWAY from the updraft, even in HP storms. The updraft portion remains active and is not supressed by downdrafts and precipitation (except RFD and wet-RFD in HP storms).
In lower shear (but very high instability) environments, the storm continues building with no precipitation (viaually) falling from a very dark base, even though the storm top is over 45,000 feet high and shows up on radar as 60+ dbz.
Once the storm matures, and precip begins falling, the storm "self destructs" based on how much was "held-up" in it, and a small area of severe weather (Usually 80-100 MPH winds with hail to quarter-sized) ensues, and ends in about 10-15 minutes with just the "orphan anvil" of the storm left (and light rain) and an outward-spreading "arcus" cloud from the cool pool (downdraft air).
I have seen some instances where a supercell, usually when a right-split occurs, or another storm develops ahead of it (south of it), it's inflow gets cut off, and the storm violently "gusts out", but does not seem as "violent" as a storm in a low-shear environment like Florida or the SW.
Any thoughts on precipitation-loading and severe-weather / pulse-storm instances?
This is a concept of "what goes up, must come down".
I see many non-supercell storms, especially in places like Florida during the summer, and SW US, produce exceptionally strong down burst winds during their later stages (before dissapation).
I am thinking that the low shear environment, and high CAPE / moisture content allows the storm to build and precip-load (where precipitation is held up by the strong updraft) until a "tipping-point" is reached, and it call comes "down in one shot".
In most cases in a supercell storm, the heavy precipitation is dumped AWAY from the updraft, even in HP storms. The updraft portion remains active and is not supressed by downdrafts and precipitation (except RFD and wet-RFD in HP storms).
In lower shear (but very high instability) environments, the storm continues building with no precipitation (viaually) falling from a very dark base, even though the storm top is over 45,000 feet high and shows up on radar as 60+ dbz.
Once the storm matures, and precip begins falling, the storm "self destructs" based on how much was "held-up" in it, and a small area of severe weather (Usually 80-100 MPH winds with hail to quarter-sized) ensues, and ends in about 10-15 minutes with just the "orphan anvil" of the storm left (and light rain) and an outward-spreading "arcus" cloud from the cool pool (downdraft air).
I have seen some instances where a supercell, usually when a right-split occurs, or another storm develops ahead of it (south of it), it's inflow gets cut off, and the storm violently "gusts out", but does not seem as "violent" as a storm in a low-shear environment like Florida or the SW.
Any thoughts on precipitation-loading and severe-weather / pulse-storm instances?
