00z NAM frontogenesis and lapse rates (above 7.0 degrees C/km is shaded) valid 18z March 14
Notes:
This slide shows an 18 hour NAM forecast valid at 18z on the 14th, of frontogenesis (brown contours) lapse rate (shaded values are greater than 7 degrees C per km) and the ageostrophic circulation (blue arrows) along a cross-section from southern New Jersey to Lake Ontario. This forecast indicates a classic pattern for heavy, banded precipitation, with steep lapse rates located above a strong, sloping frontal zone.
Slide 34