Where to find Dvorak numbers
Posted: Fri Sep 15, 2006 11:23 pm
I've seen Dvorak numbers mentioned in a lot of different forecasts and sometimes on NHC discussions. I've been trying to find out more about them and have found lots of info on how to interpret them, such as:
Full Satellite Intensity Estimate Code:
EXAMPLE: Ttt/cc/Lvv/xxhrs
Where:
T - Tropical (ST is used for Sub-Tropical systems)
tt - Satellite Derived T-Number
cc - System Current Intensity T-Number
L - Past Change
D - Developing
W - Weakening
S - Little or No change (Same)
vv - Amount of Past change in T-Number
xx - Hours over which the change was observed
Example: T4.5/5.5/W1.0/24hrs
Translation: The system appears on satellite imagery to be T-Number 4.5 storm. The Current intensity is still 5.5 and the system is still generating sustained winds of about 100 knots. As a forecast tool, the Dvorak technique is showing a weakening trend and the likelihood of a lowering CI within the next 24hours.
The only problem is I can't find them. Is there anywhere to get these intensity estimates online?
Full Satellite Intensity Estimate Code:
EXAMPLE: Ttt/cc/Lvv/xxhrs
Where:
T - Tropical (ST is used for Sub-Tropical systems)
tt - Satellite Derived T-Number
cc - System Current Intensity T-Number
L - Past Change
D - Developing
W - Weakening
S - Little or No change (Same)
vv - Amount of Past change in T-Number
xx - Hours over which the change was observed
Example: T4.5/5.5/W1.0/24hrs
Translation: The system appears on satellite imagery to be T-Number 4.5 storm. The Current intensity is still 5.5 and the system is still generating sustained winds of about 100 knots. As a forecast tool, the Dvorak technique is showing a weakening trend and the likelihood of a lowering CI within the next 24hours.
The only problem is I can't find them. Is there anywhere to get these intensity estimates online?