THERE IS A MARGINAL RISK FOR SEVERE STORMS TODAY PER THE STORM PREDICITION CENTER.
THESE ARE THE LATEST CITIES AT RISK FOR STORMS TODAY:
MARGINAL RISK: Dallas, TX...Fort Worth, TX...Arlington, TX...Plano, TX...Garland, TX...
HAIL PROBABILITY AND CITIES AT RISK:
5% PROBABILITY: Dallas, TX...Fort Worth, TX...Arlington, TX...Plano, TX...Garland, TX...
Mesoscale Precipitation Discussion 0091 NWS Weather Prediction Center College Park MD 444 AM EST Thu Mar 09 2023 Areas affected...north Texas, southern Oklahoma, southwestern Arkansas Concerning...Heavy rainfall...Flash flooding possible Valid 090944Z - 091544Z Summary...A persistent regime for locally training convection could continue to produce spots of 2+ inch/hr rainfall rates, leading to isolated/sparse flash flooding. Discussion...A cluster of west-to-east moving thunderstorm activity continues generally along the Red River Valley in north Texas and southern Oklahoma. The storms are being supported by convergence on the nose of 30-40 kt southerly 850mb flow, which was focused along that same general west-to-east axis for convection. Storms are mostly elevated, but are also benefitting from appreciable lapse rates and shear for appreciable updraft intensity and longevity. PW values around 1.3-1.4 inches was also supporting efficient rainfall. Though the convective coverage of stronger cells was generally sparse, one instance of convective training resulted in a brief period of 2-3 inch/hr rainfall rates (MRMS-estimated) near Sherman, with reports of flooded roadways due to the rainfall. The overall coverage of flash flooding is not expected to be high at all this morning, although one or two more instances could occur in this regime as storms continue to backbuild amid low- to mid-level convergence just above the boundary layer. Eventually this axis of convection will shift northeastward in tandem with low-level jet and convergence axis, with cells becoming somewhat more common in southern/southeastern Oklahoma and southwestern Arkansas (per observational trends and latest guidance). FFGs in these areas are low (around 1-1.5 inch/hr) and soils moist from recent rainfall, all suggesting a continued, yet isolated flash flood threat through 16Z or so. Cook
No comments:
Post a Comment
Note: Only a member of this blog may post a comment.