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LAMP Probabilities and Thresholds for Flight Categories

Ceiling Height
< 500 ft. < 1000 ft. ≤ 3000 ft.
Conditional Ceiling Height
< 500 ft. < 1000 ft. ≤ 3000 ft.
Visibility
< 1 mi. < 3 mi. ≤ 5 mi.
Conditional Visibility
< 1 mi. < 3 mi. ≤ 5 mi.
Probability of Precipitation
Occurrence
-OR-

Flight Category Probability Plot

In the above plot, solid lines indicate forecast probabilites. The dashed lines are the threshold values that must be exceded in order for LAMP to forecast the category indicated by the line color. The best forecast will appear as a solid red line. When two (or more) probabilities exceed their respective thresholds, the more critical category will be the one in red.

Note: To see the official LAMP categorical forecasts, please refer to the text bulletin.


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Page Last Modified: October 22 2019 16:41:07. UTC