Monster thunderstorm potential for Fri Night/Sat Night

The lifted index measures atmospheric instability (derived from CAPE convective available potential energy in joules per kg) and goes like this:

6 or Greater, Very Stable Conditions
Between 1 and 6 : Stable Conditions, Thunderstorms Not Likely

Between 0 and -2 : Slightly Unstable, Thunderstorms Possible, With Lifting Mechanism (i.e., cold front, daytime heating, ...)

Between -2 and -6 : Unstable, Thunderstorms Likely, Some Severe With Lifting Mechanism

Less Than -6: Very Unstable, Severe Thunderstorms Likely With Lifting Mechanism

And we potentially have this:

User Posted Link

It's quite hard to see the outline of the UK, but those -8,-9, and -10's are over the Southeast and East Anglia. It's too far out to have any certainty and it will change a lot between now and then, but that is Tornado/Supercell territory.

Posted By: yarmyyarmy on July 16th 2014 at 14:08:00

Message Thread

Monster thunderstorm potential for Fri Night/Sat Night (Other Football) - yarmyyarmy, Jul 16, 14:08:00
- Are we going to die? (n/m) (Other Football) - wolfio, Jul 16, 16:39:46
  - Eventually, yes (n/m) (Other Football) - Old Man, Jul 16, 17:00:11
- Can you make it Friday? Going to a wedding reception on Saturday. Ta. (n/m) (Other Football) - bird table, Jul 16, 14:53:43
  - No bother (Other Football) - yarmyyarmy, Jul 16, 15:03:35
- Sub-aqua gear for Latitude, then... (Other Football) - Nelsons final flanel, Jul 16, 14:50:52
- What does "With Lifting Mechanism" actually mean, in practical terms? (Other Football) - Arizona Bay, Jul 16, 14:50:27
  - It means you'll get rising parcels of warm air which will expand, cool, and condense (Other Football) - yarmyyarmy, Jul 16, 15:00:37
    - Fanx (n/m) (Other Football) - Arizona Bay, Jul 16, 17:50:50
- lulz @ Kent. (Other Football) - Arizona Bay, Jul 16, 14:45:37
- I had enough of that when I loved in Mississippi. (Other Football) - Bungle, Jul 16, 14:35:17
  - *lived in Mississippi. (Other Football) - Bungle, Jul 16, 14:35:43
- Interesting! (n/m) (Other Football) - Thegelman, Jul 16, 14:10:31
  - Isn't it (Other Football) - yarmyyarmy, Jul 16, 14:23:13
    - I'm weather div ,possibly more of a snow div, metaphorically (Other Football) - protheroe fitzgibbon, Jul 16, 15:17:09
    - BANG! (Other Football) - Arizona Bay, Jul 16, 14:46:09
      - AND THE DIRT IS (Other Football) - pants, Jul 16, 16:25:43
    - POTD (n/m) (Other Football) - duke of york, Jul 16, 14:35:46

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