LIVE MAP (ABOVE) ... SPC 1200Z Day 1 Outlook
Day 1 Convective Outlook
NWS Storm Prediction Center Norman OK
1141 PM CST Sat Dec 06 2025
Valid 071200Z - 081200Z
...THERE IS A MARGINAL RISK OF SEVERE THUNDERSTORMS IN THE FL
PENINSULA...
...SUMMARY...
Isolated damaging winds and a brief tornado or two are possible,
mainly across central Florida during the late afternoon and evening.
...FL Peninsula...
Abundant convective development is expected later this morning
across the north-central to northeast Gulf along a largely
west/east-oriented quasi-stationary front. Downstream
cloudiness/rain along/north of the front will support pronounced
differential boundary-layer heating across it, from central to north
FL. With most guidance indicating potential for an MCV to evolve
from the morning convection, within the broadly cyclonic mid-level
flow regime across the Southeast, it is plausible that convection
may strengthen along the baroclinic zone towards peak heating. Weak
mid-level lapse rates will remain a key limiting factor to
convective intensity. But adequate deep-layer shear will exist for
transient mid-level rotation. With a warm boundary layer anticipated
across central to south FL, a few strong gusts capable of localized
damaging winds are possible. While the 00Z NAM appears to be an
aggressive outlier with stronger low-level mass response, expected
modest low-level SRH may be sufficient for a brief tornado or two.
..Grams/Thornton.. 12/07/2025
Read more CHECK UPDATE ZOOM GRAPHIC
http://dlvr.it/TPgrtG
Windy.com Temps | Gusts | WU KORD KPWK |
CLICK for this month's BIG night sky ... | RADAR FULL MAP SCREEN |
|---|
MOBILE DEVICE? Turn sideways. Weather conditions directly above are near Lakefront. Top tabs refer to O'Hare (official).
Archives for the SPC Convective Outlook are updated daily (approximately) with a live map at the beginning of each article. Follow the link at the end of the article to check for current updates on the NOAA/NWS Storm Prediction Center website. Also, see Archives for Chicago's hourly weather data on CARDINAL NEWS Magazine.
CONVECTIVE | TORNADO | WIND | HAIL
O'Hare International Airport KORD
(Arlington Heights South)
Chicago Executive Airport KPWK
(Arlington Heights North)
Sunday, December 7, 2025
SPC Dec 7, 2025 0600 UTC Day 1 Convective Outlook
Saturday, December 6, 2025
SPC Dec 7, 2025 0100 UTC Day 1 Convective Outlook
LIVE MAP (ABOVE) ... SPC 0100Z Day 1 Outlook
Day 1 Convective Outlook
NWS Storm Prediction Center Norman OK
0652 PM CST Sat Dec 06 2025
Valid 070100Z - 071200Z
...NO SEVERE THUNDERSTORM AREAS FORECAST...
...SUMMARY...
Isolated thunderstorms are possible near a portion of the
north-central/northeast Gulf Coast during the early morning Sunday.
...Discussion...
Conditions will be too dry/stable for appreciable
lightning-producing convection across much of the CONUS through the
period. However, elevated thunderstorms are expected to commence
across the north-central to northeast Gulf Coast overnight. Some of
this activity might approach the nearshore waters and immediate
coastline over the MS River Delta and the FL Panhandle before 12Z
Sunday.
..Grams.. 12/07/2025
Read more CHECK UPDATE ZOOM GRAPHIC
http://dlvr.it/TPgjZC
Day 1 Convective Outlook
NWS Storm Prediction Center Norman OK
0652 PM CST Sat Dec 06 2025
Valid 070100Z - 071200Z
...NO SEVERE THUNDERSTORM AREAS FORECAST...
...SUMMARY...
Isolated thunderstorms are possible near a portion of the
north-central/northeast Gulf Coast during the early morning Sunday.
...Discussion...
Conditions will be too dry/stable for appreciable
lightning-producing convection across much of the CONUS through the
period. However, elevated thunderstorms are expected to commence
across the north-central to northeast Gulf Coast overnight. Some of
this activity might approach the nearshore waters and immediate
coastline over the MS River Delta and the FL Panhandle before 12Z
Sunday.
..Grams.. 12/07/2025
Read more CHECK UPDATE ZOOM GRAPHIC
http://dlvr.it/TPgjZC
SPC Dec 6, 2025 1630 UTC Day 1 Convective Outlook
LIVE MAP (ABOVE) ... SPC 1630Z Day 1 Outlook
Day 1 Convective Outlook
NWS Storm Prediction Center Norman OK
1013 AM CST Sat Dec 06 2025
Valid 061630Z - 071200Z
...NO SEVERE THUNDERSTORM AREAS FORECAST...
...SUMMARY...
Severe thunderstorms are not expected today.
...Synopsis...
A progressive flow pattern will remain over the Lower 48 states
today. In the low levels, a front will reside over the Gulf and
extend east-northeastward across the northern half of the FL
Peninsula and east of the Carolina coast. The 12 UTC Tampa, FL raob
showed poor lapse rates. Limited buoyancy coupled with
weak/negligible low-level convergence/large-scale ascent will act to
limit convective coverage and intensity across the central FL
Peninsula today.
..Smith/Barnes.. 12/06/2025
Read more CHECK UPDATE ZOOM GRAPHIC
http://dlvr.it/TPgZN1
Day 1 Convective Outlook
NWS Storm Prediction Center Norman OK
1013 AM CST Sat Dec 06 2025
Valid 061630Z - 071200Z
...NO SEVERE THUNDERSTORM AREAS FORECAST...
...SUMMARY...
Severe thunderstorms are not expected today.
...Synopsis...
A progressive flow pattern will remain over the Lower 48 states
today. In the low levels, a front will reside over the Gulf and
extend east-northeastward across the northern half of the FL
Peninsula and east of the Carolina coast. The 12 UTC Tampa, FL raob
showed poor lapse rates. Limited buoyancy coupled with
weak/negligible low-level convergence/large-scale ascent will act to
limit convective coverage and intensity across the central FL
Peninsula today.
..Smith/Barnes.. 12/06/2025
Read more CHECK UPDATE ZOOM GRAPHIC
http://dlvr.it/TPgZN1
SPC Dec 6, 2025 0600 UTC Day 1 Convective Outlook
LIVE MAP (ABOVE) ... SPC 1200Z Day 1 Outlook
Day 1 Convective Outlook
NWS Storm Prediction Center Norman OK
1137 PM CST Fri Dec 05 2025
Valid 061200Z - 071200Z
...NO SEVERE THUNDERSTORM AREAS FORECAST...
...SUMMARY...
Severe thunderstorms are not expected today.
...Discussion...
Mean long-wave trough is expected to remain centered across the
eastern Plains/MS Valley through the day1 period. Negligible height
changes are expected across lower latitudes which will result in a
synoptic front oscillating across the northern/central FL Peninsula.
This boundary will serve as the primary focus for the potential for
isolated thunderstorm development. Latest model guidance is not
particularly aggressive in air mass destabilization across the
Peninsula, but showers and a few thunderstorms should develop
along/north of the boundary as deep westerly flow provides weak lift
atop the frontal zone. While deep-layer shear is strong, weak
buoyancy and poor lapse rates do not support robust or organized
severe updrafts.
..Darrow/Thornton.. 12/06/2025
Read more CHECK UPDATE ZOOM GRAPHIC
http://dlvr.it/TPg6SK
Day 1 Convective Outlook
NWS Storm Prediction Center Norman OK
1137 PM CST Fri Dec 05 2025
Valid 061200Z - 071200Z
...NO SEVERE THUNDERSTORM AREAS FORECAST...
...SUMMARY...
Severe thunderstorms are not expected today.
...Discussion...
Mean long-wave trough is expected to remain centered across the
eastern Plains/MS Valley through the day1 period. Negligible height
changes are expected across lower latitudes which will result in a
synoptic front oscillating across the northern/central FL Peninsula.
This boundary will serve as the primary focus for the potential for
isolated thunderstorm development. Latest model guidance is not
particularly aggressive in air mass destabilization across the
Peninsula, but showers and a few thunderstorms should develop
along/north of the boundary as deep westerly flow provides weak lift
atop the frontal zone. While deep-layer shear is strong, weak
buoyancy and poor lapse rates do not support robust or organized
severe updrafts.
..Darrow/Thornton.. 12/06/2025
Read more CHECK UPDATE ZOOM GRAPHIC
http://dlvr.it/TPg6SK
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