Help With Skew-T Log-P Interpretation
Identification Definitions Parameters Online Comments
TP: Tropopause level (mb)
MW: Max wind level (mb)
FRZ: Lowest freezing level (mb) or BG for below ground
WB0: Wet bulb zero (mb) or BG
PW: Precipitable water (in)
RH: Mean RH surface to 500 mb (%)
MAXT: Estimated max temperature (C) using a 150mb layer
TH: 1000-500mb thickness (m)
L57: 700-500mb lapse rate (C/km)
LCL: Lift condensation level (mb) from surface data
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
PARCELThis is a parcel trajectory (the yellow line on the sounding) based on 100 mb mean layer.
CAPE:Convective available potential energy
CINH:Convective inhibition (open ended)
LCL: Lift condensation level (mb)
CAP: Cap strength (C)
LFC: Level free convection (mb)
EL: Equilibrium level (mb)
MPL: Maximum parcel level (mb)
WINDWind parameters
STM: Estimated storm motion (knts) from 0-6000m AG mean layer, spd 75% of mean, dir 30 deg veer from mean.
HEL: Storm relative helicity 0-3000m AG (total value)
SHR+:Positive shear magnitude 0-3000m AG (sum of veering shear values)
SRDS:Storm relative directional shear 0-3000m AG (directional difference of storm relative winds)
EHI: Energy helicity index (prop to positive helicity * CAPE)
BRN: Bulk Richardson number 500-6000m AG (prop to CAPE/bulk shear)
BSHR:Bulk shear value (magnitude of shear over layer)