…Heavy to Excessive Rainfall likely across parts of Texas and Oklahoma…
…Record heat in the Northwest will ease a bit by midweek…
A stationary frontal boundary draped west to east from the Southern Plains
to the Southeast will be the focus for showers and thunderstorms the next
several days. Anomalous moisture and instability pooling along this
boundary will support daily heavy rainfall threats, particularly for parts
of Texas and Oklahoma where WPC has highlighted slight risk areas on the
Excessive Rainfall Outlooks. Flash flooding will be a concern,
particularly in urban areas but also where it has been wet recently. The
Storm Prediction Center targets west Texas with a slight risk for severe
weather. To the north, showers and storms will accompany a cold front
through the Northeast on Tuesday, with a localized heavy to excessive
rainfall threat for interior New England. Elsewhere, a system moving
through the Northern tier will support moderate to heavy rainfall,
especially over eastern Montana into Minnesota, with a marginal risk for
flash flooding on Wednesday.
Record heat will continue across the Northwest Tuesday, posing an
increased risk for heat-related illnesses. Take precaution during the
warmest part of the day. High temperatures will soar well into the 90s and
low 100s over the interior and lower elevations away from the water. In
addition, breezy conditions pose an increased fire weather risk. HeatRisk
values will be Moderate over northern areas and major over the Southwest
Deserts (Death Valley may near/exceed 120F). Extreme heat warnings are in
effect through Tuesday for the lower elevations. The heat wave should
moderate by Wednesday. Over the Northeast, clouds and showers on Tuesday
will give way to drier and warmer weather thereafter as readings climb
back into the 80s.
Santorelli
Graphics available at
https://www.wpc.ncep.noaa.gov/basicwx/basicwx_ndfd.php
