460 

AWUS01 KWNH 052206

FFGMPD

TXZ000-060204-



Mesoscale Precipitation Discussion 0327

NWS Weather Prediction Center College Park MD

605 PM EDT Fri Jun 05 2026



Areas affected...Deep South Texas



Concerning...Heavy rainfall...Flash flooding likely



Valid 052204Z - 060204Z



Summary...Recent development of convection near the Brownsville,

TX Metro area and along the Lower Rio Grande Valley poses a flash

flood risk.



Discussion...Radar trends depict several slow-moving cells over

Deep South Texas that have persisted for several hours and

produced occasional 3 inch/hr rain rates - primarily over rural

areas where FFG thresholds are quite high (3-4 inches/hr, locally

higher).  Flash flood potential has been relatively

isolated/sparse.



Recent radar/satellite depicts convection forming nearer to the

populated areas of the Lower Rio Grande Valley (near/just

northeast of Brownsville and just south of McAllen).  These cells

are in a similar environment as the aforementioned cells farther

north across Deep South Texas, and have potential for 3 inch/hr

rain rates over more sensitive, urbanized locales.  The risk for

impacts from flash flooding have increased over the past 30

minutes and will continue to do so while slow-moving cells

continue over more sensitive/urban areas.



This risk will likely continue for at least a couple hours. 

Models suggest that convection will be primarily diurnally driven

and should lessen in intensity/coverage after sunset.



Cook



...Please see www.wpc.ncep.noaa.gov for graphic product...



ATTN...WFO...BRO...CRP...



ATTN...RFC...FWR...NWC...



LAT...LON   27789791 27469736 26429714 25769721 25819818 

            26359895 27569892