Dave Nelson
EF0
Hi Folks,
a subject I have wanted to understand better ....
Below ... A definition taken from a NWS site
NEGATIVELY TILTED - Usually used in referring to an upper level trough. The base of the trough moves out ahead
of the rest of the trough. This is a good pattern for severe thunderstorms.
question time ...
1) are there particular circumstances that cause the base to move out ahead ?
2) can this be recognised, a) ... visually in the field ?, b) ... on any of the weather data sets that can be accessed eg GFS etc?
3) why is it more likely to produce more intense storms ?
ok that will do for a start
hopefully some wx guru's can shed some light on this for me, am just willing to learn![Smile :) :)](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)
cheers
a subject I have wanted to understand better ....
Below ... A definition taken from a NWS site
NEGATIVELY TILTED - Usually used in referring to an upper level trough. The base of the trough moves out ahead
of the rest of the trough. This is a good pattern for severe thunderstorms.
question time ...
1) are there particular circumstances that cause the base to move out ahead ?
2) can this be recognised, a) ... visually in the field ?, b) ... on any of the weather data sets that can be accessed eg GFS etc?
3) why is it more likely to produce more intense storms ?
ok that will do for a start
hopefully some wx guru's can shed some light on this for me, am just willing to learn
cheers