SPC 1200Z Day 1 Outlook
Day 1 Convective Outlook
NWS Storm Prediction Center Norman OK
1101 PM CST Fri Feb 02 2024
Valid 031200Z - 041200Z
...THERE IS A MARGINAL RISK OF SEVERE THUNDERSTORMS MAINLY EARLY
TODAY NEAR MID/UPPER TEXAS COASTAL AREAS...
...SUMMARY...
Strong thunderstorm development posing some risk for severe hail and
wind might still impact portions of mid and upper Texas coastal
areas into mid morning, before generally becoming confined to the
northwestern through central Gulf of Mexico later today through
tonight.
...Discussion...
Models indicate that an anomalous, blocking mid/upper high, centered
over the Upper Midwest, will generally be maintained through this
period. Downstream of this feature, one cyclone appears likely to
move little, offshore of the northern Atlantic coast. Upstream, a
deepening surface cyclone may approach the central California coast
today through tonight, coincident with at least some further
amplification of mid/upper flow across the southern mid-latitude and
subtropical eastern Pacific into southwestern North America. This
likely will include building ridging inland of the California coast,
and across the Baja California vicinity, into the U.S. Great Basin
and northwestern Mexican Plateau.
In response to these developments, a mid-level low, still in the
process of evolving to the east of the southern Rockies, is forecast
to elongate southeastward across the northwestern Gulf coast
vicinity today through early Sunday. As this occurs, it appears
that the ongoing southerly return flow, off a still modifying
boundary layer over the western Gulf of Mexico, into southern Great
Plains, will become cut off, probably by mid to late morning.
...Northwestern Gulf Coast...
Forcing for ascent, in the exit region of a strong digging mid/upper
jet, may maintain vigorous thunderstorm development near mid/upper
Texas coastal areas into the 12-15Z time frame this morning.
However, based on latest model output, it is appearing increasingly
probable that this will be rooted above at least a shallow stable
surface-based layer, in an environment otherwise only perhaps
marginally supportive of severe hail and/or wind gusts. By late
morning, if not earlier, through the remainder of the period, the
high resolution ensemble output (among other guidance) suggests that
potential for strong thunderstorm development will generally become
confined to the northwestern into central Gulf of Mexico.
..Kerr/Squitieri.. 02/03/2024
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