Short Range Forecast Discussion
NWS Weather Prediction Center College Park MD
305 AM EDT Mon Jul 24 2017
Valid 12Z Mon Jul 24 2017 - 12Z Wed Jul 26 2017
...Localized flooding will be possible for the Southwest and southern and
central Rockies over the next few days...
...Severe weather and flash flooding possible across parts of the northern
Plains and upper Mississippi Valley on Tuesday...
Widespread showers and thunderstorms are expected across the Southeast
with hot and humid conditions in place ahead of the approaching cold
front. The front will stall from the central Plains to the Mid Atlantic,
so shower activity will continue into Tuesday. Further north, low pressure
sliding off the Mid Atlantic coast will bring some heavy showers and
thunderstorms across southern New England before pushing well offshore.
Monsoonal moisture will fuel daytime thunderstorm activity across the
Southwest on Monday and Tuesday. The initial surge on Monday will support
more widespread activity with moisture waning by Tuesday. Locally heavy
rainfall will have the potential to cause flash flooding across the desert
Southwest and central/southern Rockies on Monday. With the upper level
pattern shifting a bit further north, shower activity will spread into the
Great Basin and northern Rockies, though more limited moisture will cut
back on the extent of rainfall. However, some flash flooding will still be
possible across the central Rockies and Great Basin.
Conditions will become favorable for severe weather and flash flooding
across parts of the northern Plains and upper Mississippi Valley by
Tuesday. A cold front will push across the northern tier, with southerly
flow taking hold across much of the central U.S. This will allow heat to
build and moisture to pool along and ahead of the frontal boundary.
Showers and thunderstorms are expected to break out across the northern
Plains and upper Mississippi Valley. The upper level pattern will become
more favorable by Tuesday, supporting more organized thunderstorm
Graphics available at www.wpc.ncep.noaa.gov/basicwx/basicwx_ndfd.php