Recurring Rossby Wave Train
(Consonant Chaos: Projecting long range weather and short term climate based on the Recurring Rossby Wave Train)


This website is a home for the Recurring Rossby Wave Train forecast and analysis mappings offered by myself (Josh Herman) and other projects I am entertaining related to long range forecasting. These mappings do not represent the forecasts of any government office. Please visit the US Dept of Commerce NOAA/NWS/NCEP Weather Prediction Center for official weather forecast and analysis information.

Framework of the Recurring Rossby Wave Train; Establish numerical output of recurring atmospheric states. Further explore the interrelated nature of planetary and synoptic waves via statistical modeling. Reflect this temporal and spatial behavior of Intraseasonal Oscillation to weather patterns based on the empirical data.

I have been following recurring atmospheric states intimately since 2010. RRWT exploration journals are available. RRWT archived forecasts are available. For more detail concerning this study and a gateway for more research, please start with Chaos Theory and Its Applications to the Atmosphere.

Contact Information
Please direct questions and comments to me via email at

Update Log
20170501 - New site. Under construction.
20170510 -
Added Forward Month and Season 2mT, PR, and LI.
20170829 -
RRWT new analysis method forecast integration. (methods listing)
20171006 -
2017/18 water year RRWT update fully integrated.
20180107 -
Added 36-50 day outlooks.
20180113 -
Added analog CONUS 500MB contour maps to Forecast page.
20180116 -
Added Precipitation Rate mean, dropped Precipitable Water anomaly.
20180117 -
Added Lifted Index anomaly.
20180411 -
Added analog CONUS storm report maps to Forecast page.
20180607 -
Added Verification to Analysis page.
20201017 -
Resurrected website.

Forecasts are performed on research basis. Please take your own risk using information posted here.

Copyright © 2023 Consonant Chaos, All Rights Reserved.
Contact info:
2. in agreement or harmony with.
"these findings are consonant with recent research"
in agreement with, consistent with, in accordance with, in harmony with, compatible with, congruous with, in tune with;
complete disorder and confusion.
"snow caused chaos in the region"
disorder, disarray, disorganization, confusion, mayhem, bedlam, pandemonium, havoc, turmoil, tumult, commotion, disruption, upheaval, uproar, maelstrom;
- Projecting Long Range Weather and Short Term Climate -