Short Range Forecast Discussion
NWS Weather Prediction Center College Park MD
341 PM EDT Sun Sep 12 2021
heavy rain ahead
of the system may lead to isolated instances of flash flooding
between southern Louisiana and much of the Texas coastline
this
evening. As Nicholas draws closer to southern Texas on Monday,
additional round of heavy rain and increasing winds are forecast
across the lower and middle Texas Coast. By Tuesday, impacts are
expected to expand into the upper Texas Coast and southwest
Louisiana.
Upwards of 20 inches of rain is possible across parts
of the Texas coastline through the middle of the week, with
widespread amounts between southern Texas and southwest Louisiana
around 5 to 10 inches. Rainfall amounts of this magnitude will
likely lead to areas of flash flooding, with considerable flash
flood events possible. To highlight the concern, a Moderate Risk
(level 3/4) of excessive rainfall has been issued for Monday and
Tuesday between the lower Texas Coast and southwest Louisiana.
PMD issued by NWS SPD at 12 Sep 2021 19:41 UTC
mesonet.agron.iastate.edu