TAF Verification



SOP Number & Name

2110 TAF Verification

Description

Takes about 2 minutes. You input your own TAF and verify the previous one.

Who does this procedure?

Forecaster

How often?

Every 6 hours (four times per day) unless the field is closed.

Frequency of reference to the SOP

P has referred to it a couple of times. Once you've done it a few times, you know it.

Comments

        Is done on time about 80 percent of the time.

        Sometimes you get busy, you get tired.

        You forget to check the home page and when you do you see that GOES isn't downloading or something and so you get involved in fixing that.

        The OPs Assistant looks at the TAF Verifications to prepare the skill scores.

Action sequence:

        Prepared every six hours, with a valid interval of 24 hours.

        Sequence:

        day watch takes passdown.

        Forecaster watches satellite loops for progression, movement of up to 8 hours of data.

        Consider historical data (good for when fog burns off).

        Looks at 0Z charts for atmospheric stability (enough lift for thunderstorms?).

        20-30 min before TAF is due, 12Z comes in.

        Sometimes need to change TAF on that basis.

        Looks at models - usually 4-6 hrs after analysis time.

        TAF itself goes into CONTEL Meteorological Workstation - one paragraph of text.

 

What supports the action sequence?

What is the needed information?

 

Charts, Satellite, Radar, upper air soundings, forecast models (especially short-range models),upstream stations and upstream weather, previous 12-24 hours of station data.

 

Depends on the situation. 12-24 hour data is useful for history - finding a trend. More useful in summer than winter.

 

What is good or useful about the support and the depiction of needed information?

 

        Sat pictures are easy to see - most telling.

        Difax are B/W and printed and not so good.

        They are actually better on a high resolution monitor.

        Meteograms are easy to read but some need dictionary of terms.

        They are also difficult to read because of color-coding.

        They are still learning to read them.

 

What about the support or information depiction makes the action sequence difficult?

 

        Timeliness of data, the tendency of data to be inaccurate or interrupted are real problems.

        Nothing in the work environment informs the FDO that the task needs to be done.

 

Concept Mapping Toolkit
Insitute for Human and Machine Cognition
The University of West Florida