GEFS Practically Perfect Analysis

GEFS Practically Perfect Analysis

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Official guidance note

These products diagnose forecast environments favorable for severe weather. They are not storm reports, warnings, watches, or official SPC/NWS outlooks. Use them as situational-awareness guidance and consult SPC and local NWS offices for official forecasts.

Practically perfect climatology viewer

Images are loaded from the production climatology template /heatmap2/data/pper/clim/{folder}/pperfect_{file_token}_{MM}_{DD}.png.

Practically perfect climatology image

Climatology definition

Climatology should be described as 1990–2019 means based on 14-day windows centered on the selected date. Mark this clearly as historical context, not a forecast.