Northwest flow storms...again...brought another round of severe weather to eastern New Mexico and parts of Texas on July 18th, 2009. A supercell moved south-southwest out of Deaf Smith and Randall Counties into Castro County during the evening hours of July 18. Severe wind gusts and large hail were reported with this storm as it moved southwest through Castro County. The Castro supercell was anchored on a southwestward moving outflow/cool frontal boundary. Additional storms would develop around sunset on this boundary as it entered Lubbock County. Severe winds would accompany this new line of storms across parts of Lubbock and Hockley counties between 9:30 and 10:00 pm on July 18th, 2009.

Photo of developing supercell storm entering Castro County around 7:35 pm on July 18th, 2009. Photo looking southeast from Hereford, Texas. Photo Credit: Tim Homer and Hereford FD.

KLBB base reflectivity loop for 7 pm to 8:45 pm CDT on July 18th, 2009 (0002-0244Z on July 19th) showing Castro County supercell moving southwest.

KLBB base reflectivity loop for 7 pm to 10 pm CDT on July 18th, 2009 showing influence of boundary on storm motion and development. Watch for the bats leaving Clarity Tunnel around sunset in far northeast Floyd County/southeast Briscoe County. Click here for radar loop: KLBB Base Reflectivity LOOP.

Infrared satellite image for 7:25 pm CDT on July 18th, 2009. Click here for a four-hour satellite loop: IR Satellite loop for 7 pm CDT to 11 pm CDT on July 18th, 2009. Image Credit: UCAR.

Dimmitt 2NE data for July 18th, 2009. Please see the 5-minute data: CLICK HERE!

Reese Center data for July 18th, 2009. Please see the 5-minute data: CLICK HERE!

Wolfforth 6SSW data for July 18th, 2009. Please see the 5-minute data: CLICK HERE!