RMK- Remarks
A02- Station has a precip. discriminator. (can tell between rain and snow)
RAB21- Rain began at :21 after the hour.
SLP205- Sea Level Pressure is 1020.5 mb
RDGS E OBSCD- I've never seen it before, but I'm guessing it means readings (ridges?) to the east are obscured.
P0000- No measurable precip. in the past hour.
T00280011- Temp. is 2.8 deg. C, Dew Point is 1.1 deg. C.