LIVE MAP (ABOVE) ... SPC 1630Z Day 1 Outlook
Day 1 Convective Outlook
NWS Storm Prediction Center Norman OK
1114 AM CDT Tue Apr 15 2025
Valid 151630Z - 161200Z
...THERE IS A MARGINAL RISK OF SEVERE THUNDERSTORMS ACROSS PARTS OF
THE NORTHEAST...
...SUMMARY...
Isolated wind damage will be possible this afternoon across parts of
the Northeast.
...Northeast...
Within the base of an eastward-moving large-scale trough over the
eastern CONUS, a related 100+ kt midlevel jet streak will pivot
eastward across the Mid-Atlantic and Northeast today. Ascent in the
left-exit region of the jet will promote widely scattered,
low-topped convection across the Northeast through the afternoon.
Despite limited post-frontal boundary-layer moisture, diurnal
heating beneath very cold midlevel temperatures will continue to
steepen low-level lapse rates amid strengthening low/mid-level
winds. This environment will support locally damaging convective
wind gusts (45-60 mph) through the afternoon -- especially with any
small clusters/lines that can evolve.
...Four Corners into southern Colorado...
Isolated high-based thunderstorms are expected across parts of the
Four Corners and southern CO this afternoon, where midlevel moisture
atop a diurnally deepening boundary layer will yield inverted-V
profiles. As a result, a couple locally strong downbursts cannot be
entirely ruled out.
..Weinman.. 04/15/2025
Read more CHECK UPDATE ZOOM GRAPHIC
http://dlvr.it/TK9nhg
Windy.com Temps | Gusts | WU KORD KPWK |
CLICK for this month's BIG night sky ... | RADAR FULL MAP SCREEN |
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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)
Tuesday, April 15, 2025
SPC Apr 15, 2025 1630 UTC Day 1 Convective Outlook
SUNRISE AND SUNSET TIMES IN UTC (if you're not logged in to Google)
CHICAGO UTC-6 during CST (Central Standard Time, e.g., winter)
CHICAGO UTC-5 during CDT (Daylight Savings Time, e.g., summer)
CHICAGO UTC-6 during CST (Central Standard Time, e.g., winter)
CHICAGO UTC-5 during CDT (Daylight Savings Time, e.g., summer)