NW Nebraska Supercells Charge Toward Tennis Ball Hail, 80 MPH Winds — SevereWX

Supercells Brewing Severe Threats in Northwest Nebraska

Storms are firing up along a line of moderate instability stretching from northwest Nebraska into southwest South Dakota, fueled by a mid-level shortwave trough and large-scale ascent. SPC's Mesoscale Discussion 1473 highlights increasing convective coverage through the evening, with northwest and north-central Nebraska in the crosshairs.

Key Threats:

• Hail: Up to 2.5 inches (tennis ball size) from supercell cores.
• Winds: Isolated gusts to 80 mph, possible from supercells or intense line segments.
• Potential: Supercells supported by 40 knots of 0-6 km shear and steep lapse rates.

Storms in southeast Wyoming are also pushing east into western Nebraska, maintaining strength and adding to the risk in stronger cells. Watch issuance odds sit at 60%.

Peak probabilities include EF2-level tornadoes (90 mph), though the primary concerns remain hail and damaging winds.

This setup promises photogenic supercells for chasers but real hazards for locals—stay tuned to radar as coverage grows.

Preparedness Tip: Secure outdoor items, monitor local NWS updates, and have a severe weather plan ready. Know your safe spot indoors.