Gravity wave with roll cloud feature (looking northwest) passing across Reese Center (Lubbock County) at 7:25 am on May 13, 2008. A cold front passed through Reese Center approximately one hour after the initial gravity wave. Picture Credit: Jeff Livingston/Glenn Allen.

Looking northeast from Reese Center. Picture Credit: Jeff Livingston/Glenn Allen.

A picture of the gravity wave from eastern Hockley County at 7:30 am. Looking northeast towards Smyer, Texas. Picture Credit: WTM.

Looking east from near Smyer, Texas. Picture Credit: WTM.

Visible satellite loop from 7:45 - 9:00 AM on May 13, 2008. Credit: Steve Cobb, NWS Lubbock

KLBB radar loop from 7:00 - 8:30 AM on May 13, 2008.

Several West Texas Mesonet stations sampled portions of the gravity wave. Meteograms are in standard time (add one hour for daylight savings). Click on the thumbnails for a full-sized image.

REESE CENTER: Wind Shift with gravity wave at 7:25 am CDT. Cold frontal passage at 8:30 am CDT.

Lubbock 3W: Wind Shift with gravity wave also around 7:25 am CDT. Cold frontal passage around 8:45 am CDT. Impressive pressure couplet with gravity wave.

WTM Lubbock 3W (TTU) 5-minute observations.