Experimental Snow Forecast Projects Focus Groups

 Experimental Snow Forecast
Products

Communicating probabilistic information using

 

General Decision Making
and Information Needs

 

Experimental Probabilistic
Graphics

 

Winter Storm Warning Example

 

What does this set of graphics tell you? (Probe for the below questions if not mentioned already)

How do you feel about the title of the graphics?

Do you feel you have enough information to understand what the graphics are communicating?

(IF they don’t mention color) What do the colors represent in this picture?

How do you feel about the color representation?

Would you change it?

What do you see as the relationship among the 3 graphics?

<number>

<number>

 

Timing

Timing

What does the graphic tell you about the timing of the snow?

What do you think is the relationship between the time on these graphics with the winter storm watch/warning/advisory products?

Then tell them how the graphic is supposed to work with the timing. Ask if that meets their needs.

<number>

<number>

 

Usefulness

What do you see as the relationship among the 3 graphics?

How would you use these graphics to differentiate snow amounts by location?

How useful are these maps in guiding your decision-making process? Please explain.

(If useful) Are all three of the graphics equally useful?

Or, is one of the three more useful to you? Please explain.

Would you change anything to make it more useful to you?

<number>

<number>

 

Percent chance >=1 inch snow

 

<number>

<number>

 

Percent chance >=4 inch snow

 

<number>

<number>

 

Percent chance >=12 inch snow

 

<number>

<number>

 

Percent Chance Greater Than

<number>

<number>

 

Set A
“Expect/most/potential”

 

What does this table communicate to you?

<number>

<number>

 

<number>

<number>

 

Exceedance

 

 

Set A. “Expect/most/potential”

 

 

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