Morning Tom, lets have a go:
CATEGORY 1: (next date of "Settling Snow, in the S.E.Region) - 2nd March
CATEGORY 2: ( exact date and name of last named Storm to enter Shipping Forecast area, and in which Shipping Forecast area will it attain its lowest central Pressure (in millibars) -Hugh - Bailey
CATEGORY 3: (exact date/Temp. to nearest degree Celsius, of last AIR Frost of the Season, in S.E.Region) - 19th March
CATEGORY 4: (exact date that 21c+ (70f+) is first recorded, in the S.E.Region) - 3rd May
you never know.