EF1 tornado in Montgomery County, Texas

Isolated straight line wind damage, mainly in the form of downed trees, was

found across Montgomery county (particularly the southern 2/3s part of

the county). However, the it appears a definitive tornado track started in

western Conroe from in and just west of the Canyon Creek subdivision off of

Longmire Rd. This small tornado tracked generally west-northwest to the

south of FM 3083 for about a mile. The strongest winds, likely reaching

90 mph EF1 range, was near the start of the tornado just to the east of

Longmire. Most of the rest of the tree damage was consistent with EF0 winds

before the tornado dissipated.

Strong upper level disturbances combined with above average moisture levels and favorable upper level wind patterns to produce a round of severe thunderstorms that eventually trained and produced excessive rainfall and flash flood during the afternoon hours of the 26th and on into the overnight and early morning hours of the 27th. Rainfall totals of 6 to 10 inches were common over the north and northwestern parts of Harris County into Waller, Montgomery, and Washington Counties, with much of the rain falling in a 3 to 6 hour period. Portions of Washington County recorded over 12 inches of rainfall in a 3 hour period. This event was the fourth federal disaster declaration for Harris County in the last year.