GETTING TO KNOW THE SKEW-T PARAMETERS
METEOROLOGIST JEFF HABY
Below are contents of the above link

1. SKEW-T: A LOOK AT TP (TROPOPAUSE)
2. SKEW-T: A LOOK AT FRZ (FREEZING LEVEL)
3. SKEW-T: A LOOK AT WB0 (WET BULB ZERO LEVEL)
4. SKEW-T: A LOOK AT PW (PRECIPITABLE WATER)
5. SKEW-T: A LOOK AT RH (RELATIVE HUMIDITY)
6. SKEW-T: A LOOK AT MAXT (MAXIMUM TEMPERATURE)
7. SKEW-T: A LOOK AT TH (THICKNESS)
8. SKEW-T: A LOOK AT L57 (700 TO 500 MB LAPSE RATE)
9. SKEW-T: A LOOK AT LCL (LIFTED CONDENSATION LEVEL)
10. SKEW-T: A LOOK AT LI (LIFTED INDEX)
11. SKEW-T: A LOOK AT SI (SHOWALTER INDEX)
12. SKEW-T: A LOOK AT TT (TOTAL TOTALS)
13. SKEW-T: A LOOK AT KI (K INDEX)
14. SKEW-T: A LOOK AT SW (SWEAT INDEX)
15. SKEW-T: A LOOK AT CAPE (PURE INSTABILITY)
16. SKEW-T: A LOOK AT CINH (CONVECTIVE INHIBITION)
17. SKEW-T: A LOOK AT SBLCL (SURFACE BASED LCL)
18. SKEW-T: A LOOK AT CAP (CAPPING LAYER)
19. SKEW-T: A LOOK AT LFC (LEVEL OF FREE CONVECTION)
20. SKEW-T: A LOOK AT EL (EQUILIBRIUM LEVEL)
21. SKEW-T: A LOOK AT MPL (MAXIMUM PARCEL LEVEL)
22. SKEW-T: A LOOK AT STM (STORM MOTION)
23. SKEW-T: A LOOK AT HEL (HELICITY)
24. SKEW-T: A LOOK AT EHI (ENERGY HELICITY INDEX)
25. SKEW-T: A LOOK AT BRN (BULK RICHARDSON NUMBER)
26. SKEW-T: A LOOK AT SRDS (STORM RELATIVE DIRECTIONAL SHEAR)
27. SKEW-T: A LOOK AT Tdd (DEWPOINT DEPRESSION)
28. SKEW-T: A LOOK AT MW (MAXIMUM WIND)
29. SKEW-T: A LOOK AT STORM UVV
30. SKEW-T: A LOOK AT CCL (CONVECTIVE CONDENSATION LEVEL)
31. SKEW-T: A LOOK AT TEI (THETA-E INDEX)
32. SKEW-T: A LOOK AT 0-3 KM SHEAR
33. SKEW-T: A LOOK AT SURFACE RH
34. SKEW-T: A LOOK AT THETA-E
35. SKEW-T: A LOOK AT EI (ENERGY INDEX)

Skew T Log P - Sounding Types (examples and explanation). Choose the sounding type below
you wish to learn more about. All information comes from www.theweatherprediction.

Inverted V Sounding
Goalpost (Loaded Gun) Sounding
Rain Sounding
Wet Microburst Sounding
Dry Sounding
Snow Sounding
Lake-Effect Snow Sounding
Sleet Sounding
Freezing Rain Sounding
Cold Rain Sounding
Front Sounding
Morning Inversion Sounding
Low level Jet Sounding
Wet-Bulb Sounding
Elevated Convection

Description of Terms

• TP = Tropopause Height (mb)

• MW = Height of maximum wind level (mb)

• FRZ = Lowest freezing level (mb) or BG if below ground

• WB0 = Height of Wet Bulb zero (mb) or BG if below ground

• PW = Precipitable Water (in)

• RH = Mean relative humidity (%) from the surface to 500 mb

• MAXT = Est. maximum temperature (C) using a 150 mb layer

• TH = 1000-500 mb thickness (m)

• L57 = 700-500 mb lapse rate (C/km)

• LCL = Lifting condensation level (mb)

• LI = Lifted Index (C) using 100 mean layer above surface

• SI = Showalter Index (C)

• TT = Total Totals Index

• KI = K Index

• SW = Sweat Index

• EI = Energy Index

  Parcel Derived Quantities (yellow line on soundings)

• CAPE = Convective Available Potential Energy

• CINH = Convective Inhibition (open ended)

• LCL = Lift condensation level (mb)

• CAP = Cap strength (C)

• LFC = Level of Free Convection (mb)

• EL = Equilibrium level (mb)

• MPL = Maximum parcel level (mb)

  Wind Parameters

• STM = Estimated storm motion (kts) from 0-6000m AG mean layer, spd 75% of mean,
  direction 30 degrees veer from mean

• HEL = Storm relative helicity 0-3000m AG (total value)

• SHR+ = Positive shear magnitude 0-3000m AG (sum of veering shear values)

• EHI = Energy helicity index (proportional to positive helicity * CAPE)

• BRN = Bulk Richardson number 500-6000m AG (proportional to CAPE/ bulk shear)

• BSHR = Bulk shear value (magnitude of shear over layer)

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Frozencoastie by Jeff Estes
Jeff@frozencoastie.com