Excessive Rainfall Discussion
NWS Weather Prediction Center College Park MD
1158 AM EDT Sun May 31 2026
Day 2
Valid 12Z Mon Jun 01 2026 - 12Z Tue Jun 02 2026

...THERE IS A MARGINAL RISK OF EXCESSIVE RAINFALL OVER PORTIONS OF
THE NORTHERN ROCKIES AND PARTS OF THE PLAINS...

Northern Rockies...
Introduced a Marginal Risk area in the northern Rockies where
moisture/precipitation lingers as a slow moving mid- and upper-
level system pulls away. The concern is not so much for rainfall
intensity at this point but for the cumulative effect of the
additional rain on top of what has fallen in the previous few days.
The concern is also fairly limited in terms of duration as
rainfall does come to an end during the middle- to latter-part of
the period.

Western High Plains...
Also introduced a Marginal Risk area mainly in the western portion
of Kansas/Nebraska as an axis of low level moisture begins to
return northward during the day. Placement of the QPF and any
associated risk of excessive rainfall remains somewhat tenuous.
Concern is that the instability should be enough that the QPF
amounts approaching or exceeding 2 inches from the UKMET/NAM and
GFS would be delivered quickly. A

Southeast US...
Portions of the Mid-South/Southeast may also be at-risk for
Excessive Rainfall, but guidance remains murky on where storms will
initiate. Given these reasons, the Day 2 ERO remains free of risk
areas for the time being.

Mullinax/Bann


Day 2 threat area: www.wpc.ncep.noaa.gov/qpf/98epoints.txt