NOTE!  Normal observations are at 0Z or 12Z.
SOUNDING STATION :       RAP STATION :    

For a list of Upper Air Locations, click here.


SKEW-T DIAGRAM
DESCRIPTION OF PARAMETERS
  • 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

    -PARCEL-
    This 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)

    -WIND-
    Wind 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)

LATEST RAP RUN
RAP (RAPID REFRESH) RUN Ver 1.4 - LATEST MODEL RUN FOR KABR - 01/28/2025
TIME (EST)5 PM6 PM7 PM8 PM9 PM10 PM11 PM12 AM1 AM2 AM3 AM4 AM
SHOWALTER INDEX 13.0815.3515.314.8214.6414.6315.1215.4815.0113.3712.212.13
LIFTED INDEX 13.1215.115.9315.8215.5915.6715.8116.2716.6616.361616.29
SWEAT INDEX 171.31177.22181.48182.59173.48170.52173.76176.95171.73174.92176.55170.16
K INDEX -4.45-7.35-4.32-2.4-7.84-7.38-5.77-4.2-3.942.056.468.6
TOTALS TOTAL INDEX 32.926.5126.5626.2322.1822.5323.7225.1124.3428.8932.8333.23
LCL HEIGHT (Ft) 453843023478384837673689319927422518237122492128
LCL PRESSURE (mb) 808.35816.31844.18833.23835.94839.75857.16871.79879.56885.77889.93893.88
LCL TEMP (in C) -5.12-5.24-4.42-6.5-7.02-7.15-6.74-6.47-6.4-6.55-6.79-6.93
PRECIP WATER (in) 0.350.30.290.30.320.320.330.330.340.350.360.37
CAPE (J/Kg) 0.000.000.000.000.000.000.000.000.000.000.000.00
NCAPE (J/Kg) 000000000000
CINS (J/Kg) 0.000.000.000.000.000.000.000.000.000.000.000.00
LID STRENGTH (C) 12.919.52019.521.120.720.220.120.62120.119
EQ LEVEL (Ft) ------------------------------------
LFC (Ft) ------------------------------------
BULK RICHARDSON ------------------------------------
BRN SHEAR (m/s) ------------------------------------
SRH ( 0 - 1Km) (m/s) 90.78109.48122.96114.14147.73153.2572.1-29.9-66.4-43.01-55.77-55.12
SRH ( 0 - 3Km) (m/s) 54.832.447.770.3118.8117.6554.20.1-48-154.7-186.5
STORM MOTION 324 at 65323 at 67325 at 67326 at 67328 at 67327 at 66326 at 64324 at 64322 at 63321 at 61320 at 60321 at 59
ENERGY HELICITY(EHI) 000000000000
1 KM SHEAR (Kts) 192635383535363329283033
3 KM SHEAR (Kts) 465357575959555254575655
6 KM SHEAR (Kts) 536168717475778078787976
UP VERT VELOCITY (m/s) ------------------------------------
WBZ (Ft) 203114251425142514251428000000
CRAVEN SIG SEVERE 000000000000
SUPERCELL COMPOSITE (SCP) 000000000000
SIG TORNADO (STP) 000000000000

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