To help understand if the RASP forecast is matching the real world, an experimental script has been put together that will compare a RASP 'spot' forecast against a METAR observation (a real-world airfield met observation).
These observations are produced hourly or so.
The following table is a summary for the UK, using the script outlined below the table and map. The table is produced from 09:00 to 18:00 on the hour and every half hour during UK daylight hours.
A spatial map of the reports can be found here.
The following plot will show a running view of the percentage of measures as correct between the forecast and the RASP prediction. Normally for the whole of the UK, 85% or higher indicates RASP is close enough and can be relied upon.
This report: 17:42:05 26/05/2020 for this map view. This run created in 64.22 secs
The script is a bit slow, so sometimes the results may not be available as an auto-generated static view.
If this happens, click here to dynamically re-generate the table as a separate page.
If there is a problem with the output, click here to get a copy of the last generated text table.
The Webmaster makes no representations or warranties, expressed or implied, as to the accuracy of the information held herein or its fitness for any purpose whatsoever. In no event will the Webmaster be held liable for any direct, indirect, special incidental or consequential damages arising out of the use of the information held on this server.
BLIPMAP™ = Boundary Layer Information Prediction MAP - Created by Dr. John W. (Jack) Glendening, Meteorologist