Daily Archives: September 24, 2015

IFR Probabilities give information during the day too

IFRPROB_24Sep2015_13-17anim

GOES-R IFR Probabilities, hourly from 1300-1700 UTC on 24 September 2015 (Click to enlarge)

Ceilings and visibilities over South Carolina decreased during the day on 24 September 2015. The animation of hourly IFR Probability fields, above, shows an increase in Probability over South Carolina as the visibilities decreased.  IFR Probability fields can alert a forecaster to the possibility of IFR conditions at any time of the day.   Visible imagery for the same period, below, shows the multiple cloud layers streaming inland. The accuracy of the IFR Probability field in highlighting the region with near-IFR and IFR Probability is testimony to the accuracy of the Rapid Refresh model data that are used.

VIS_1300_1700_24sept2015anim

GOES-East Visible (0.63 µm) Imagery, hourly from 1300-1700 UTC on 24 September 2015 (Click to enlarge)