…Active severe weather setup from the southern Plains to the
Mid-Atlantic through Tuesday…
…Stifling heat dome to build in throughout much of the West and the
western Gulf Coast; hottest temperatures compared to normal centered over
the Northwest…
The main thing making weather headlines over the next couple of days will
be the potential for strong to severe thunderstorms to develop across
portions of the Deep South and extending northward to the central
Appalachians on Monday. The Storm Prediction Center has a Slight Risk of
severe thunderstorms from near New Orleans to western New York. There
will likely be scattered multi-cell clusters and some supercells, with
damaging winds and large hail the primary threats, and some tornadoes are
also a possibility. An approaching cold front from the northwest will
intercept a warm and unstable environment ahead of it, and fuel the
development of intense convection going into the afternoon and evening
hours. In addition to the severe weather threat, periods of heavy rainfall
may lead to some instances of flash flooding across portions of
Pennsylvania and New York, as well as portions of the Gulf Coast region,
with some areas potentially getting 1 to 3 inches of rain.
Another area of stormy weather is expected to be across western Texas and
eastern New Mexico on Monday, where a broad Marginal Risk and embedded
Slight Risk of severe weather is valid, but not as widespread as what
happened Sunday evening across Texas. Additional areas of strong
thunderstorms and heavy rainfall can be expected across southern Texas to
Louisiana on Tuesday, and also near the East Coast as the cold front
slowly approaches and then exits the coast by Wednesday morning, followed
by drier and slightly cooler conditions for the middle of the week.
Elsewhere across the Continental U.S., widespread anomalous heat will
continue to affect interior portions of the Pacific Northwest through
Tuesday with heat advisories in effect from northern California to eastern
Washington and northern Idaho, and daily record highs are likely for some
areas. It will also continue to be uncomfortably hot and humid from Texas
and extending east across the Gulf Coast, with high dewpoints and
temperatures in the upper 80s to middle 90s making it feel over 100
degrees at times during the afternoon hours, and remaining quite humid
overnight. Air quality alerts are in effect across portions of the
Northeast as wildfire smoke from distant Canadian wildfires continues to
infiltrate those areas.
Hamrick
Graphics available at
https://www.wpc.ncep.noaa.gov/basicwx/basicwx_ndfd.php
