RSS Mesoscale Discussions from Storm Prediction Center
SPC 2000Z Day 1 Outlook
Day 1 Convective Outlook
NWS Storm Prediction Center Norman OK
0136 PM CST Sun Dec 07 2025
Valid 072000Z - 081200Z
...THERE IS A MARGINAL RISK OF SEVERE THUNDERSTORMS FOR THE CENTRAL
PORTION OF THE FLORIDA PENINSULA...
...SUMMARY...
Isolated damaging winds and a brief tornado are possible across
parts of the Florida Peninsula beginning late this afternoon through
the evening.
...20Z Update...
No changes to the outlook are required. See the previous discussion
for additional information.
..Wendt.. 12/07/2025
.PREV DISCUSSION... /ISSUED 1019 AM CST Sun Dec 07 2025/
...Florida Peninsula...
Late morning radar/satellite composite shows a rain shield and
embedded convection along a west-east oriented, southward-sagging
front over the north-central Gulf. This rain activity is possibly
the result of a weak disturbance moving eastward across the northern
Gulf of America within the base of a larger-scale mean trough over
the central and eastern part of North America. This disturbance is
forecast to move into north FL late today and east of the FL/GA
coasts by mid-late evening.
Considerable cloudiness will likely persist near/north of I-4 and
combine with meager low to mid tropospheric lapse rates to thereby
limit destabilization. However, a seasonably moist airmass will
probably yield a few hundred J/kg MLCAPE prior to an increasing
prevalence of showers/thunderstorms moving east from the Gulf into
the west/northern portions of the Peninsula towards late this
afternoon and evening. Ample mid- to high-level flow will support
storm-scale rotation contingent on a sufficiently strong updraft or
two developing within this zone of convection. The risk for
localized strong/damaging gusts and perhaps a brief tornado may
accompany the strongest storms, mainly during the 22-08 UTC period,
as this threat shifts from northwest to south across the Peninsula.
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SPC 1930Z Day 3 Outlook
Day 3 Convective Outlook
NWS Storm Prediction Center Norman OK
1258 PM CST Sun Dec 07 2025
Valid 091200Z - 101200Z
...NO THUNDERSTORM AREAS FORECAST...
...SUMMARY...
Thunderstorm activity is not expected across the Lower 48 on
Tuesday.
...Synopsis...
A broad swath of west to northwesterly flow will overspread the
CONUS on Tuesday. An upper shortwave trough will deepen as it
spreads east from the northern Rockies into the Midwest. A prior
cold front passage offshore into the Gulf and western Atlantic will
result in a dry and stable airmass. This will preclude thunderstorm
potential despite a deepening surface low and cold front spreading
across the Plains to the Mid/Upper MS Valley/Great Lakes vicinity.
..Leitman.. 12/07/2025
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