Thursday, March 6, 2008

Tornado Watch for Texas Coastal Plain

Thunderstorm are rapidly developing generally south of I-10 to the coastline ahead of an approaching upper trough swinging in from the west. At the surface a cold front extends across central TX moving southward toward the region. CAPE values from 500-1000 j/kg and deep layer shear generally around 50kts will allow some thunderstorms to develop and maintain supercell characteristics. +200 m2s2 0-1km SRH values and 0-1km vertical shear values of ~20kts may pose a tornado threat with any defined supercell. Currently, thereare 2 T-warnings: one in Goliad and one in Jim Wells Co, both of which are showing rotation in the low levels on radar.

Tornado Warnings above and 4 cells showing supercell characteristics on radar below...

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