How can a good barometer be used to verify weather maps?

Discuss how often we get new weather information each day?

Discuss how to best use surface analysis maps in conjunction with forecast maps — what we call “map sequencing.”

Why must we compare GRIB forecasts (model output data) to maps from the weather services before depending on them?

When we download a GFS model forecast in GRIB format, we know this has not been vetted by human forecasters, so list 3 or 4 ways we can ourselves check that this is likely a good forecast or maybe one that is in doubt.

List some unique values of GRIB forecast data over traditional weather maps.

List two or three specific cases where GFS global model wind speed forecasts are likely to be wrong.

Discuss briefly the timing of GFS model forecasts compared to the timing of OPC graphic and text forecasts. In other words, when are they valid, forecast time steps, extent of the forecast (how far into the future), and timeliness, meaning when we first get the forecast of each how old are they?