SPC AC 051232
Day 1 Convective Outlook
NWS Storm Prediction Center Norman OK
0632 AM CST Sat Feb 05 2022
Valid 051300Z - 061200Z
...NO THUNDERSTORM AREAS FORECAST...
...SUMMARY...
Thunderstorms are not expected across the conterminous U.S. today
and tonight.
...Synopsis/Discussion...
Synoptic troughing in the upper-air pattern will lose amplitude in
the East and strengthen in the central CONUS, as:
1. A strong trough now extending from southern QC to the Carolinas
moves rapidly offshore by 00Z, and
2. A series of shortwave perturbations contribute to general
amplification of cyclonic height curvature across the
northern/central Rockies and central Plains.
Meanwhile, a southern-stream perturbation -- evident in moisture-
channel imagery over central parts of MS/LA to the TX Gulf Coast --
will move east-northeastward to the Carolinas and GA through 12Z
tomorrow. This feature will remain well behind a surface cold front
now over south-central FL, and forecast to move southward through
the Keys this evening. In the meantime, a few showers are possible
near the front, though associated lift will be weakening with time.
Weakness of both low-level convergence and lapse rates aloft (per
stable layer near 600 mb in 12Z MFL/KEY soundings) indicates minimal
overland thunderstorm potential. Otherwise, the strong, post-
frontal, continental/polar anticyclone will render the CONUS air
mass too day and/or stable for thunderstorms.
..Edwards.. 02/05/2022
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