Appalachian Supercells and Colorado Gusts Threaten with Watches Near — SevereWX

Appalachian Supercells and Colorado Gusts Threaten with Watches Near

Urgent East Coast Alert: Storms are ramping up fast across portions of West Virginia, northern and central Virginia, and southern Delaware. With mostly sunny skies fueling temps into the low-to-mid 80s ahead of a cold front, steep lapse rates and rising instability are setting the stage for severe thunderstorms. Expect damaging winds (55-70 mph), large hail up to 1.25 inches, and even tornadoes (85-110 mph possible). Strong mid-level winds (40-50 knots) could spawn supercells or clusters, with a low-level jet boosting tornado odds later. SPC's Mesoscale Discussion 1783 gives an 80% chance of a Severe Thunderstorm Watch soon.

Rockies to Plains Shift: Meanwhile, thunderstorms are firing along Colorado's Front Range and into northeast Colorado and southwest Nebraska. Early isolated storms may drop large hail as inhibition erases with heating into the mid/upper 80s. These will likely grow into organized clusters or lines, spreading damaging winds eastward in a buoyant, mixed environment. Watch odds sit at 40% per MD 1782, but the threat could widen quickly.

What’s a Mesoscale Discussion? Think of it as SPC's early warning siren for a specific, smaller area where severe weather is brewing fast—often the step before a watch covers the risk of hail, high winds, or twisters. It's your cue to pay attention.

Stay Ready: Check radar often, secure outdoor items, and have a severe weather plan. Know your safe spot indoors, away from windows. Follow @SevereWXnet and local NWS for updates—safety first as these threats unfold this afternoon.