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 - 01/13/2025
TIME (EST)6 AM7 AM8 AM9 AM10 AM11 AM12 PM1 PM2 PM3 PM4 PM5 PM
SHOWALTER INDEX 20.1820.0719.7219.8419.6319.920.6220.8720.820.6320.6521.17
LIFTED INDEX 26.6826.6826.2326.0325.7325.8226.0926.0925.8425.8625.8526.6
SWEAT INDEX 111.76113.35111.57107.04105.62104.37104.38110.83112.05110.2110.48109.27
K INDEX -18.48-22.5-25.66-31.98-37.84-40.77-41.79-36.56-28.86-22.54-17.47-17.72
TOTALS TOTAL INDEX 23.6824.1624.9623.9923.722.8421.2720.7821.6623.0824.0223.47
LCL HEIGHT (Ft) 169215081421137516072090218324592611193822641711
LCL PRESSURE (mb) 918.3923.82925.74927.27920.74905.34900.43892.52886.16908.61897.75917.57
LCL TEMP (in C) -24.24-24.75-24.53-24.71-22.44-21.84-21.9-21.85-21.78-20.76-21.33-20.65
PRECIP WATER (in) 0.090.090.080.080.080.080.080.070.080.090.110.11
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) 27.427.226.826.926.826.927.327.627.827.527.628.4
EQ LEVEL (Ft) ------------------------------------
LFC (Ft) ------------------------------------
BULK RICHARDSON ------------------------------------
BRN SHEAR (m/s) ------------------------------------
SRH ( 0 - 1Km) (m/s) 53.2866.4269.6948.0850.2137.3935.6343.2247.774.4676.5159.43
SRH ( 0 - 3Km) (m/s) 5.176.794.673.446.36.6-14.6-28-54.5-60.7-43.7-84
STORM MOTION 327 at 40326 at 40326 at 42325 at 43324 at 42325 at 42325 at 42323 at 44323 at 45323 at 46323 at 47325 at 48
ENERGY HELICITY(EHI) 000000000000
1 KM SHEAR (Kts) 21222322191391081099
3 KM SHEAR (Kts) 414448474541404345474953
6 KM SHEAR (Kts) 505047444240414954545555
UP VERT VELOCITY (m/s) ------------------------------------
WBZ (Ft) 000000000000
CRAVEN SIG SEVERE 000000000000
SUPERCELL COMPOSITE (SCP) 000000000000
SIG TORNADO (STP) 000000000000

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