Supercell and Maybe-nadoes | Tucumcari to Clovis, New Mexico | 24 May 2023

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After a long travel day on the 23rd, we set up near Logan to watch convection fire off the mesas north of Tucumcari. Even though there wasn’t obvious upper level support, enough shear and instability were in place for a supercell risk. And that’s exactly what we got. In the extreme.

Developing cell north of Tucumcari, throwing out some anvil flickers. 2218Z

The storm we were watching gradually gathered strength and started drifting southward and we made our way south of I-40 on Rt. 278 to watch the slow-mover on its way down. The morphing wall cloud/RFD shelf was wonderfully chopped with texture.

Found the windmill-supercell combo I’d been looking for. 2327Z

At 2343Z, a column of dust appeared under/north of the RFD shelf/wall cloud as we were repositioning 12 miles south of I-40. We quickly pulled over and I zoomed as tight as I could for photos (no video). The feature lasted about 3 minutes until 2346Z. I think the base of the storm was just south of the interstate at that point. As far away as we were, it was difficult to tell whether we were seeing a coincident gustnado, or if it might be a hybrid circulation in contact with the cloud base under the wall cloud. So far I haven’t seen clear images from other chasers at that time who were closer.

Gustnado or possibly hybrid circulation roughly near I-40, 11-12 miles north of us. 2344Z
Last moments of the base looking easily decipherable. 2354Z
Chaotic sky as we repositioned through Apache Canyon. 0008Z
Watching from the caprock as the storm approaches the higher terrain. 0015Z

I anticipated the need to head off new cells popping off to the south. CAMs suggested this would be a likely evolution, but it didn’t quite work out that way. Convection did try initiating further south of our main storm and it encouraged me to stay well ahead so I wouldn’t get caught behind any new hail cores. But each new strong updraft got ingested northward into the dominant cell, like a long distance flanking line, and making a beautiful mess in the process.

New updraft getting rapidly ingested northward into the dominent cell. 0023Z
Vorticity and sculpting as cells start to merge. 0027Z
Wall cloud-esque lowering as the cells complete their merger. 0031Z
Impressive color variation as the lowering/wall cloud/RFD shelf elongates. 0032Z
Doppler truck hustling to stay ahead of the storm. 0035Z

As the storm lofted up onto the Caprock, it got stronger, while the base was constantly adorned with a mix of lowerings, scud tags, shelf teeth and transient wall cloud features. It was chaotic enough to recommend maintaining a respectable distance.

Looking northwest from north of Grady as a lowering reached out to a homestead. 0044Z

We repositioned on Rt. 209 south of Broadview as the storm rapidly intensified.

We then drove down Rt. 209 to CR33, six miles south of Broadview, and spent a couple minutes taking shots as the storm loomed over the wind farm. At this point, it was pulling incredibly intense inflow—car-door breaking strong—a lot of effort needed to carefully get out for pics. The streamwise vorticity current was flying right-to-left into the rain wrapped base. The RFD precip hid a developing monster. I knew something had to be happening in there, but without contrast-enhancing eyeballs, I couldn’t make it out. However, even with photo editing, it’s still inconclusive visually, whether the lowering in there is tornadic.

Streamwise vorticity current on right side of image racing right-to-left into the updraft. 0117Z
Possible tornadic lowering behind the RFD core from Rt. 209 & CR33. 0118Z

Repositioning southward was a white-knuckles experience with the enhanced traffic load and I’m glad we got moving when we did, especially thinking about the traffic that was clogged up 3-4 miles further back in that line. Dense traffic or no, I feel that SVC surfing on HP beasts is definitely not for me.

Rear dashcam view, rounding into the Rt. 209 curve north of Clovis as chaser conga line advances south.

After that memorable experience, I stayed a lot further out to destress and attempted shots through growing inflow dust. Thankfully the next day’s chase would be in the same vicinity, so we grabbed a motel and got some much needed rest.

Monster storm advancing toward Clovis. 0045Z
Lightning-illuminated, dust munching storm structure. 0231Z
0239Z


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