May 30, 1999

Day of the Mothership

With Contributions from
Ed Calianese
 

Click on Any Image Below To See Larger, Higher Resolution Version

 

1400 UTC 30 May 1999

Synoptic scale low in north-central KS, with intersection of trough line and old outflow boundary over south-central Nebraska.

 

Our target area is outlined in blue box. We started in Scotts Bluff and headed toward northern edge of intersection of outflow and trough-line, near Hastings, Nebraska.

Forecast hodographs showed excellent low level turning of the wind, but with marginal speed shear.

An incoming jet streak was expected to strengthen the anvil level storm relative flow considerably, although the low level shear profile was weak.

We felt that the risk of LP supercells was high in the box, alhtough SPC never really outlooked the area nor did they issue any watches of any sort.

 The first storm we encountered was north of Hastings, Nebraska. It was briefly supercellular.  
 

A second storm formed on the south side of the outflow boundary of the first, about 20 miles south of Hastings. This was also briefly supercellular.

Both of these storms evolved quickly to HP supercells, telling us that the lower mid-level weakness in the wind field still existed. Each these storms had severe hail associated with them and were warned for.

Another storm formed on the south flank of this storm (not shown) and went through the same metamorphosis.

Yet another storm formed south of this one, by this time very near Interstate 70 in Kansas. This was to become the Salina storm.

This shows the Salina storm as we approached it from about 20 miles to its west. The lovely bell-shaped lowering was evident for all of its life-cycle. Note the anvil flaring off towards the east-southeas  

  Now we were getting within shouting distance. The storm had a wonderfully textured updraft and, occasionally, a beaver tail (evident in formative stages to right).

 

(Left to Right) John Monteverdi, Developing Mother Ship, Brian Curran, Brian's Father-in-law, Ed Calianese (behind the camera...took the picture)

Had to stop and take a picture of the chase group when we were about 15 miles east of Salina.

(Photo by Ed Calianese)

Other Pictures of This Day's
Storms By Ed Calianese

   As we approached Salina, the main mesocyclonic cloud structure began to develop small cloud tags, and lowerings, including a couple of funnel clouds. A tornado warning was issued for the storm.

 

Page 2 of Salina Storm Photos