Our Mission

Lake Street’s mission is to make relevant weather information more accessible to businesses across a wide range of industries, to enable them to make the best weather-dependent decisions.

Whilst you can get generic weather forecasts easily, one needs a relatively high ‘threshold knowledge’ about how computers model the weather to get the best forecast for a given business.

Lake Street Consulting has the knowledge. Enhance your project with our expertise.

Our background ensures that we listen to our clients and work towards their end goal. A path which involves making independent decisions, leading the pack, assessing the accuracy and likelihood of solutions, and communicating clearly.

While we can’t change the weather, we can help you work with the weather.



Isla Finney MA (Cantab), MSc (Oxon), DPhil (Oxon), FRMetS, CMath, CSci


Isla founded Lake Street Consulting Ltd in 2014, and has 19 years’ commercial experience in the energy markets. For 17 of those, she has been providing operational weather forecasts, drawing on her academic work which looked into the sources of error in numerical weather forecasts which limit their accuracy.

Time on the trading floor means she is used to working to tight deadlines, making independent decisions, and leading the pack in terms of forecast calls. Large monetary value associated with these decisions has honed her ability to communicate clearly and assess accuracy. Time working as a consultant has contributed to her ability to listen to clients and work towards their end goal.

Isla holds a MA in Mathematics from the University of Cambridge, a MSc in Mathematical Modelling and Numerical Analysis and a DPhil in Applied Mathematics and Atmospheric Physics, both from the University of Oxford. Her past employers include Entergy Koch Trading, Merrill Lynch, D.E. Shaw, and ILEX Energy Consulting.