Cyclone phase evolution: Analyses & Forecasts

This page presents historical, analyzed (current), and model-forecast cyclone phase diagrams for northwestern hemisphere cyclones
with the goals of improved structural forecasting, structural transition (subtropical/tropical/extratropical), cyclogenesis, and providing measures of structural predictability.

Please note that these products are experimental and not official forecasts. For official forecasts in the U.S., please refer to the National Weather Service and National Hurricane Center.

To the right are the most recently picked interesting diagrams.
In this case, the UKMET analysis of extratropical transition of Ignacio and "landfall" near the Alaskan border as a weakening extratropical storm.

Latest deterministic model output:
CMC: 2017032900 GFS: 2017032906
JMA: 2017032906 NAVGEM: 2017032900
UKM: 2017032906

Current/recent GFDL model output:
No recent GFDL runs

Current/recent NCEP HWRF model output:

Current/recent CIRA/NESDIS AMSU based diagrams:
No recent AMSU retrievals

Ensemble output:
Latest deterministic intercomparison: [ 2017032906 | 2017032900 ]

Latest CMC Ensemble: [ 2017032900 | 2017032812 ]

Latest GFS Ensemble: [ 2017032900 | 2017032812 ]

Latest NGP Ensemble: [ 2017032900 | 2017032812 ]

Latest CMC+GFS+NGP Ensemble: [ 2017032900 | 2017032812 ]

Example phase diagrams from past events: [View]

Help/Docs: [ Docs | AMS02-ppt | AMS02Talk-ppt ]

Page created and maintained by:

Robert Hart
Florida State University

Jenni Evans
Penn State University

This page last updated: Wed Mar 29 13:38:47 UTC 2017