1.       Line
of building towers flanking from a thunderstorm. 

  



2.       Sun
setting behind cumulus clouds. 

  



3.       Cloud
to cloud to ground lightning. 



4.       Mammatus
"clouds boiling upside down", on top of a flanking down draft. 

Mammatus, also known as mammatocumulus (meaning "mammary cloud"), 

is a meteorological term applied to a cellular pattern of pouches hanging 

underneath the base of a cloud. 



5.       Massive
single cell severe tornadic thunderstorm. 



6.  Downdraft of precipitation from a young cumulonimbus cloud. 

The initial downrush happening as the rest of cell is still forming and building. 



7.       Leading
edge of a flanking downdraft of a thunderstorm. 



8.       Another
great mammatus – extremely unstable air. 



9.       Sunset
on dissipating thunderstorms. 

Could have two cells rotating in opposite directions, rare, 

but meteorologically possible, like two egg beaters. 



10.   Sunset
dissipating thunderstorm. 



11.   Volcanic
eruption creating a circular outflow boundary. 



12.   Somewhat
disorganized or dissipating thunderstorm. 

Most of it already downward collapsed with the rain shield being dominant. 

 



13.   Single
cell thunderstorm with cloud to ground and cloud to cloud lightning, 

some being imbedded inside the cells. 



14.   Tornadic
vortex w/lightning, multi-layer outflow boundaries. 



15.   Row
of thunderstorms, and more beautiful cloud to cloud and cloud to ground lightning. 



16.   Cloud
to ground lightning in the rain shield in dissipating thunderstorms. 



17.   Single
cell "super cell thunderstorm with mammatus. 



18.   More
great cloud to cloud and cloud to ground lightning. 



19.   Tower
cumulus building into a thunderstorm. 



20.   A
tornado funnel near the ground. 

Probably already on the ground, but not enough moisture or debris/dirt to see it on the ground. 

Surface dirt starting the kick up. 



21.   Circular
outflow boundaries with storm cell rotation. 



22.   Lowering
wall cloud from mature thunderstorm. 



23.   Lots
of cloud to ground lightning (assuming the dark is mountains). 

  

  

24.   A
large tornado on the ground.