Excessive Rainfall Discussion
NWS Weather Prediction Center College Park MD
410 AM EDT Fri Sep 25 2026
Day 3
Valid 12Z Sun Sep 27 2026 - 12Z Mon Sep 28 2026

...THERE IS A SLIGHT RISK OF EXCESSIVE RAINFALL FOR PARTS OF THE
NORTHEAST...

...Northeast...
The general consensus of the models shows a powerful nor'easter
beginning to weaken as it lingers in the vicinity of the northern
Mid-Atlantic coast. How far inland, if at all, the storm drifts
will help dictate how far beyond the coastal regions its
associated heavy rains will reach. For now, maintained a Slight
Risk over eastern Massachusetts, where confidence in additional
heavy amounts is greater regardless of the track.

...Southwest...
Increasing southwesterly flow ahead of an amplifying trough
digging south across California will begin to tap moisture and mid-
to-upper level energy, supporting an increase in shower and
thunderstorm activity and the potential for localized areas of
flash flooding from Southern California into the Southwest.

Pereira

Day 3 threat area: www.wpc.ncep.noaa.gov/qpf/99epoints.txt