DarkSky Temps | Gusts | WU KORD Data

CLICK for this month's BIG night sky ...

RADAR FULL MAP SCREEN

NEXRAD

STORMTRACK

Cardinal SAT

CHGOWX.COM


Archives for Chicago's hourly weather data updated 24-48 hours after end of each day. MOBILE CHGOWX.COM ...
Weather conditions on bar directly above are near Lakefront. Weather conditions with Moon are O'Hare (official).

Thursday, November 11, 2021

SPC Nov 11, 2021 1300 UTC Day 1 Convective Outlook

SPC 1300Z Day 1 Outlook Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 0648 AM CST Thu Nov 11 2021 Valid 111300Z - 121200Z ...NO SEVERE THUNDERSTORM AREAS FORECAST... ...SUMMARY... Severe thunderstorms are not currently forecast through tonight. ...Deep South/TN Valley to Southeast and Lower Mid-Atlantic States... Nonzero, but very low severe potential is evident during the period. Broad and weakening convective plume from IL to southeast TX should evolve into a more broken swath through midday. Thunderstorms have largely become confined to the southeast TX area, where a locally strong wind gust is possible until the line clears the coast. Pockets of more robust boundary-layer heating are expected ahead of the precip swath in the Deep South, where just-in-time moisture return might yield a corridor of weak surface-based buoyancy with MLCAPE near 500 J/kg. This may narrowly overlap the southern extent of stronger 850-mb flow in the AL vicinity where adequate around 40-kt effective bulk shear will exist as the Upper Midwest longwave trough amplifies. Some intensification along residual convective outflow might occur with low probability for a weakly rotating updraft. Where stronger low-level winds will be present with northern extent in the TN Valley, a low-topped line of showers should evolve amid scant buoyancy with minimal thunderstorm potential. Substantially weaker low-level flow behind the line suggests convective wind gust potential will be limited. Low-level moistening from off the south Atlantic Coast should support meager surface-based buoyancy expanding overnight across the eastern Carolinas into parts of VA. Some amplification of low-level winds is expected east of the central and southern Appalachians as a vigorous shortwave impulse progresses from the Mid-MS Valley to the Great Lakes. This may overlap the northern extent of the scant buoyancy plume and render potential for a weakly rotating storm or two. Damaging wind and tornado probabilities at this time still appear to be less than 5 and 2 percent respectively. ..Grams.. 11/11/2021 Read more LIVE: spc.noaa.gov
http://dlvr.it/SCKqtD