ACUS01 KWNS 251627
SWODY1
SPC AC 251625

Day 1 Convective Outlook CORR 1
NWS Storm Prediction Center Norman OK
1125 AM CDT Wed Jun 25 2025

Valid 251630Z - 261200Z

...THERE IS AN ENHANCED RISK OF SEVERE THUNDERSTORMS ACROSS PARTS OF
SOUTHWEST NORTH CAROLINA...CENTRAL AND NORTHERN SOUTH CAROLINA...AND
EASTERN GEORGIA....

...THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS FROM NORTHEAST
COLORADO INTO PARTS OF IOWA AND MINNESOTA....

CORRECTED FOR NDFD GRID ERROR IN SC

...SUMMARY...
Severe wind gusts are possible from parts of the Carolinas into the
Southeast, with widely scattered strong to severe storms possible
from the northern High Plains eastward to the Mid Atlantic.

...Southeast US...
An unusually favorable thermodynamic pattern has evolved across the
southeast US today, with very steep mid-level lapse rates, cool
temperatures aloft, and strong daytime heating. Surface dewpoints
in the 70s will yield afternoon MLCAPE values over 3500 J/kg.

Large scale forcing is weak, suggesting convective initiation will
be poorly focused. However, most 12z CAM solutions show several
clusters of storms through the afternoon spreading southward from NC
into SC and eastern GA. Vertical shear is rather weak, suggesting
storms will be rather disorganized. However, there is a conditional
risk for an active day across the ENH risk, with considerable
coverage of damaging wind reports possible. As storms spread
southwestward this evening across GA, the risk of locally damaging
wind gusts will continue.

...NE/IA/MN...
Visible satellite imagery shows a developing differential heating
zone extending from south-central NE into central IA. Full sun to
the south of this zone will lead to strong instability and scattered
afternoon thunderstorm development. A band of 30-40 knot
southwesterly flow aloft atop this zone, coupled with strengthening
southerly low-level winds, will encourage organized/bowing clusters
of storms capable of damaging winds and some hail. A tornado or two
cannot be ruled out.

...CO/KS...
Thunderstorms will once again develop off the higher terrain of
CO/WY this afternoon and spread into the Plains. Model guidance
suggests steep low-level lapse rates and sufficient CAPE for severe
wind potential as these storms track toward northwest KS/southwest
NE by early evening.

...OH/WV...
Hot and humid conditions are present today across much of southern
OH into northern WV. Visible satellite imagery shows a developing
CU field, which may result in scattered slow-moving afternoon
thunderstorms. Winds aloft are rather weak, but the strongest cells
in this corridor may be capable of locally damaging wind gusts.

..Hart.. 06/25/2025

$$

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