After we had used Saturday 12th May as a repositioning day from Kerville to Carlsbad (New Mexico) the SPC Had issued a Slight Risk over the eastern plains of New Mexico for today, easterly upslope flow would allow convection to form over the interior mountains of New Mexico and eventually move off the higher terrain into the better moisture, so it was a sit it out and await the Storm of the day to move South East. Weak Storms duly erupted around 1pm MDT, And we sat and watched patiently between Carlsbad and Roswell. At about 6pm we noticed that one cell had become dominant just to the west of Roswell and we decided now was the time to intercept, we initially drove west from Roswell to take a look and sample some small hail, it was about this time the Storm was rapidly gaining Supercell structure and starting to eat into the better moisture to the South East so off we went south from Roswell and sat in front of it for the next 2 hours, the structure became more and more fantastic. As we neared Artesia the Storm became tornado warned and the sirens were blaring as we went through the town, amazing clouds of outflow dust overran our position. The cold winds were enough for me too know that this Storm (Although Pretty in appearance) was not going to produce so just NE Of Carlsbad we let it core us, we took refuge under an old gas station canopy which gave us little protection from the 70mph driven in hail hitting the car, thankfully the hail was only quarter sized at the biggest. Ended the day eating at Applebys in Carlsbad and receiving a very strange job proposition from Mr Casey and Mr Ivey.