Daily Archives: May 12, 2020

IFR Probability with a frontal passage over Pennsylvania

GOES-16 ABI Band 2 (0.64 ┬Ám) Visible Imagery, 1000-1700 UTC on 11 May 2020

Frontal passage with extratropical cyclones will frequently be accompanied by low ceilings and reduced visibilities, that is, IFR conditions. A loop of visible imagery, above, suggests a surface cyclone (surface analyses are shown below) but it is difficult to determine from the imagery where low ceilings and reduced visibilities are present. Continue reading