Custom Wind Rose Plots

This application attempts to generate a wind rose for a time period of your choice. Please be patient when submitting this form, as it may take up to a few minutes to generate the plot due to the large amount of data that this application processes. You can limit the dataset from which the windrose is derived in three ways:

1. By only including observations from a specific hour
2. By only including observations from a specific month or by a specific period of dates each year.
3. By only including observations between a start and end hour

You can also, optionally, prescribe six wind speed bins, in the units of your choice. The first bin from zero to your value is assumed to be calm values. The last bin represents the last value to infinity. These images and data are in the public domain, the disclaimer page contains more details.

Backend Documentation exists for those that wish to script against the windrose image/data service.

Select Start/End Time:

(Times are in America/Toronto time zone)

	Year	Month	Day	Hour	Minute	1. Limit to Hour of Start Time 2a. Limit to Month of Start Time 2b. Limit to Month+Day Period each Year 3. Limit to Range of hours given by start and end time Specify frequency axis limit (1-100%) (0 represents auto-scale). Optional. User provided wind speed bins 0 - - - - - - + Since calm winds have no direction, the first bin lumps all the calm reports together. A value of 2 knots is likely the most appropriate here. The bin ranges are inclusive on the lower end and exclusive on the upper end. If you want to plot less than six bins, leave the right most boxes blank. Bar Convention of Plot: Meteorology: Bars point in direction wind is blowing from. Engineering: Bars point in direction wind is blowing toward. Display Units: knots (KTS) miles per hour (MPH) meters per second (MPS) Direction Bins: 8 12 16 20 24 28 32 36 Image Format: PNG Image (.PNG) Portable Document Format (.PDF) Scalable Vector Graphic (.SVG) Image DPI:
Start:	200720082009201020112012201320142015201620172018201920202021202220232024	JanFebMarAprMayJunJulAugSepOctNovDec	12345678910111213141516171819202122232425262728293031	12 AM01 AM02 AM03 AM04 AM05 AM06 AM07 AM08 AM09 AM10 AM11 AM12 PM01 PM02 PM03 PM04 PM05 PM06 PM07 PM08 PM09 PM10 PM11 PM	01234567891011121314151617181920212223242526272829303132333435363738394041424344454647484950515253545556575859
End:	200720082009201020112012201320142015201620172018201920202021202220232024	JanFebMarAprMayJunJulAugSepOctNovDec	12345678910111213141516171819202122232425262728293031	12 AM01 AM02 AM03 AM04 AM05 AM06 AM07 AM08 AM09 AM10 AM11 AM12 PM01 PM02 PM03 PM04 PM05 PM06 PM07 PM08 PM09 PM10 PM11 PM	01234567891011121314151617181920212223242526272829303132333435363738394041424344454647484950515253545556575859