WEBVTT

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The AR scale Plume Diagrams show the observed and forecasted integrated vapor transport or IVT,

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an AR scale for a given location over the previous and future seven days.

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A map on the left shows the forecasted AR scale at each location over the next seven days.

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The Plume diagram in the center represents the IVT and AR scale analysis over the previous seven days on the left side of the plot,

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and the forecasted IVT and AR scale for the next seven days on the right side of the plot for the chosen location.

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On the forecast side, individual ensemble members are represented by thin grey lines.

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The unperturbed control forecast is represented by a thick black line.

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The ensemble mean is shown by a thick green line, and plus or minus one standard deviation from the ensemble mean

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are shown with a red and blue line as well as grey shading.

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Colored shading represents the AR scale for the given time calculated by either the control forecast or the ensemble mean.

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At the top of the plot, each AR is given a unique letter representation in the AR intensity, duration, and time integrated IVT during the AR is shown.

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Each shaded AR is then shown on the right plot over the AR scale matrix using the letter representations.

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Any time periods where IVT reaches over 250, but duration and intensity thresholds do not meet the minimum AR scale requirements

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will be highlighted by grey shading in the Plume diagrams and represented by circles for observed times and X's for forecast times on the AR scale matrix.

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The user can select different locations, choose between the GES and ECMWF EPS models, and choose to calculate the AR scale using the control forecast or the ensemble mean.