•Hebert / Poteat
(H/P) Technique (..continued..)
•ST 2.5 (35-40 knots
max sustained winds)
–Low Level Circulation Center is displaced from increased deep layer,
organized convection (not necessarily dense convection)
by at least 0.5 degrees latitude (30 nm) but no more than 2 degrees (120 nm). The cloud pattern should exhibit a more markedly curved spiral band
pattern (as a rough guide, it should wrap at least 0.5 divisions on the Log10
spiral).
–The outer convective band should be displaced 5 to 10
degrees latitude (300-600 nm) east of the the LLCC and possibly another exists 2 to 4 degrees
(120-240 nm) west through north of the LLCC.
–If the system meets the requirements
of either of the above statements, then the intensity is ST 2.5
Cloud
Patterns in Subtropical Cyclones
/ Hybrid Systems