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GFS and NAM MOS Compare

KCVG GFS MOS GUIDANCE 11/11/2019 1800 UTC
KCVG NAM MOS GUIDANCE 11/11/2019 1200 UTC

Entries of "--" indicate that the current model run does not include forecast data for the time period.

Descriptions of MOS Elements

• DT = The day of the month, denoted by the standard three or four letter abbreviation
  
• HR = Hour of the day in UTC time. This is the hour at which the forecast is valid, or if the forecast is valid for a period, the end of the forecast period.
  
• N/X = nighttime minimum/daytime maximum surface temperatures.
  
• TMP = surface temperature valid at that hour.
  
• DPT = surface dewpoint valid at that hour.
  
• CLD = forecast categories of total sky cover valid at that hour.
  
• WDR = forecasts of the 10-meter wind direction at the hour, given in tens of degrees.
  
• WSP = forecasts of the 10-meter wind speed at the hour, given in knots.
  
• P06 = probability of precipitation (PoP) during a 6-h period ending at that time.
  
• P12 = PoP during a 12-h period ending at that time.
  
• Q06 = quantitative precipitation forecast (QPF) category for liquid equivalent precipitation amount during a 6-h period ending at that time.
  
• Q12 = QPF category for liquid equivalent precipitation amount during a 12-h period ending at the indicated time.
  
• T06 = probability of thunderstorms/conditional probability of severe thunderstorms during the 6-hr period ending at the indicated time.
  
• T12 = probability of thunderstorms/conditional probability of severe thunderstorms during the 12-hr period ending at the indicated time.
  
• SNW = snow fall categorical forecasts during a 24-h period ending at the indicated time.
  
• POZ = conditional probability of freezing pcp occurring at the hour.
  
• POS = conditional probability of snow occurring at the hour.
  
• TYP = conditional precipitation type at the hour.
  
• CIG = ceiling height categorical forecasts at the hour.
  
• VIS = visibility categorical forecasts at the hour.
  
• OBV = obstruction to vision categorical forecasts at the hour.
  

Definitions of Categorical Elements

MOS element descriptions and definitions are adapted from the NWS Meteorological Development Laboratory's web site.

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