Convective Parameters - Helicity

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Update: Storm Chances Tonight

The Heat Continues Next Week!

Heat Rules

Overall, it appears that the potential for widespread showers and thunderstorms will be diminishing. The best rain/storm potential will be across the Big Country where a few severe storms still remain possible. If severe storms occur, the main threats will be large hail and strong winds. Towards the I-35 corridor, rain/storm chances are lower and it's possible that areas near and east of I-35 remain rain-free through midnight.

The heat will continue next week with most of North and Central Texas experiencing high temperatures in the mid to upper 90s. Be sure to stay hydrated and take frequent breaks if outdoors!

Hot days coming up... Be sure to know the terminology and don't forget these heat safety rules. For additional information check out this heat safety website: www.weather.gov/heat

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Automatically generated image showing areas of storm relative helicity.


Hour - 1	Hour - 2	Hour -3

4 Panel Display | Animated Loop

Helicity (0-1 Km)

This is the 0-1 km (approximately 0-3,000 Ft. AGL) storm relative helicity which is a measure of the amount of low level wind shear available for tornadogenesis. This is not a good indicator of supercell potential which is related more strongly to 0-6 KM vertical shear. Values greater than 100 m**2/s**2, do suggest an increased threat of tornadoes provided a supercell is present. Larger values are generally better, but there are no clear "boundaries" between non-tornadic and significant tornadic supercells.

The arrows indicate the approximate right supercell storm motion using the Bunkers technique.

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