Abbreviations

Abbreviation Translation Precipitation Intensity
(liquid water equivalent in
AFL Above Freezing Layer mm per 12-hour period)
QPF Quantitative Precipitation Forecast Light < 5
precip precipitation Moderate 5 to 15
z, Z Zulu, Universal Coordinated Time Heavy 15 to 25
POP Probability of Precipitation Very Heavy > 25
Models
GEM Global Environmental Multi-scale Wind km/h
GLB, Glb, Glob GEM Global Model Light <25
LAM GEM Local Area Model Moderate 25-40
NAM North American Model Strong 40-60
REG GEM Regional Model Extreme >60
ECMWF European Centre/Medium-Range Weather Forecasts

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