…Heavy to Excessive Rainfall likely across parts of Texas and Oklahoma
over the next few days …
…Record heat out West will begin to modify…
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 for Wednesday and Thursday and then eastward
towards the Mississippi Valley by Friday. Additionally, Storm Prediction
Center has most of Texas under a Marginal Risk for Wednesday and Thursday
as storms will be possible with instability and outflow boundaries
lingering around; hazards will be gusty winds and hail. The northern Great
Basin will also see some thunderstorms ride along a frontal boundary and
bring threats for severe weather and heavy rain. WPC has a Marginal Risk
for Excessive Rainfall active for Wednesday across the upper Midwest and a
Slight Risk (level 2/4) on Thursday as there is more confidence in a
higher QPF footprint. For severe weather, the Storm Prediction Center has
portions of the northern Plains and Midwest under a Marginal Risk as gusty
winds and hail could be possible with thunderstorms over the nexy few
days. Florida may also seem locally heavy thunderstorms and downpours as
ample tropical moisture and instability bring the start to the rainy
season underway.
Record heat across the West should begin to subside as high pressure
ridging becomes less pronounced. High temperatures out West should lower
to the 80s and some low 90s opposed to the 100s seen on Monday and the
weekend. Portions of southern Texas may see temperatures still reach the
low 100s across the Rio Grande valley, but clouds and rainfall should
hamper the extreme heat risk. Elsewhere, the central and eastern U.S. will
be seasonable for early June with highs in the upper 80s and low 90s. The
northern Plains and upper Midwest will be on the cooler side north of the
frontal boundary with highs in the 60s.
Wilder
Graphics available at
https://www.wpc.ncep.noaa.gov/basicwx/basicwx_ndfd.php
