Supercells Intensifying Northeast of Denver with 2.5-Inch Hail, Tornado Threat — SevereWX

Supercells Northeast of Denver Poised for Intensification

Storms are ramping up just northeast of Denver, along the Front Range and Cheyenne Ridge, where low-level convergence and warm air advection are fueling thunderstorm development. The SPC's Mesoscale Discussion 1406 highlights a 60% chance of a tornado watch as these storms could evolve into supercells, then cluster up later tonight.

Key Threats:

• Hail: Up to 2.5 inches (tennis ball size) most probable.
• Winds: 65-80 mph gusts capable of snapping tree limbs and downing power lines.
• Tornado: Possible up to 90 mph (low-end EF2 intensity).

Boundary layer moisture is pooling on east-southeasterly winds, eroding inhibition despite warmer mid-levels. Strong shear will support rotating storms initially, with upscale growth expected by 8-10 PM Moderate (02-04Z). The setup tracks from northeastern Colorado into southeastern Wyoming and southwestern Nebraska.

This fits the ongoing Plains severe pattern, but low-level focus here boosts the supercell odds. Check SPC graphics for the lat/lon box: 41.26°N 103.56°W to 41.85°N 100.93°W and beyond.

Timing: Peak concerns through 10 PM Moderate tonight.

Stay prepared: Monitor local NWS updates (BOU, CYS, GLD, LBF), have multiple alerts on, shelter indoors if storms approach, and secure outdoor items. Know your safe spot for large hail and potential spin-ups. Severe weather demands respect—don't drive into it.