Mesoscale Discussion 1343 NWS Storm Prediction Center Norman OK 0645 AM CDT Sun Jul 26 2020 Areas affected...south Texas Concerning...Tornado Watch 402... Valid 261145Z - 261315Z The severe weather threat for Tornado Watch 402 continues. SUMMARY...The tornado threat across far south Texas will continue through the morning and into the early afternoon as Tropical Storm Hannah slowly moves into northern Mexico. A new tornado watch will likely be needed later this morning. DISCUSSION...The low-level wind field remains favorable for tornadoes across far south Texas as Tropical Storm Hanna continues to move into northern Mexico. In the short term the greatest tornado threat should exist across deep south Texas. This area is on the northern edge of a more persistent band of stronger convection, located across far northeast Mexico, associated with Hanna. Morning radar imagery from Brownsville continues to show numerous broad, transient area of low-level rotation embedded within this convective band. Additionally, recent radar trends indicate isolated, transient mini-supercells east of Brownsville moving west-northwest toward the Texas coast. The overall low-level kinematic environment should remain favorable for brief tornadoes into the afternoon. Given this continued risk, a new tornado watch will likely be needed prior to the expiration of Tornado Watch #402, which is scheduled to expire at 9AM CDT. This new tornado watch will likely last into at least the early afternoon. ..Marsh.. 07/26/2020 ...Please see www.spc.noaa.gov for graphic product... ATTN...WFO...CRP...BRO... LAT...LON 26179834 28379876 28189613 25729714 26179834Read more
from SPC Forecast Products http://www.spc.noaa.gov/products/md/md1343.html
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