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 - 01/30/2025
TIME (EST)12 AM1 AM2 AM3 AM4 AM5 AM6 AM7 AM8 AM9 AM10 AM11 AM
SHOWALTER INDEX 11.211.1410.589.8610.039.79.299.389.059.19.7510.81
LIFTED INDEX 13.613.7713.8914.0114.2713.913.8614.0813.8914.3614.6415.31
SWEAT INDEX 89.6593.0789.5182.1777.7376.9878.8981.0375.3566.1756.3951.81
K INDEX -6.26-5.69-6.53-5.85-5.92-6.71-7.29-6.98-7.23-8.8-10.52-11.37
TOTALS TOTAL INDEX 31.4630.6430.631.7732.1633.0133.7133.6634.1434.1334.1433.64
LCL HEIGHT (Ft) 202117521436107493589389690297597910092116
LCL PRESSURE (mb) 890.92899.4909.52921.19927.32928.52929.05929.05926926.57927.57890.77
LCL TEMP (in C) -6.47-6.3-6.1-5.79-5.9-6.18-6.58-6.89-7.09-7.3-7.18-6.72
PRECIP WATER (in) 0.260.250.250.250.260.260.250.250.240.240.230.23
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) 1616.516.115.615.915.515.215.314.81515.716.3
EQ LEVEL (Ft) ------------------------------------
LFC (Ft) ------------------------------------
BULK RICHARDSON ------------------------------------
BRN SHEAR (m/s) ------------------------------------
SRH ( 0 - 1Km) (m/s) 115.0998.7100.9896.7923.36-16.84-25.22-45.23-50.55-43.11-28.75-28.85
SRH ( 0 - 3Km) (m/s) 277.6186.9133.788.95-43.7-44.7-40.9-55-54.8-27.3-60.1
STORM MOTION 306 at 26311 at 28313 at 30315 at 31313 at 35313 at 34313 at 32313 at 31314 at 29311 at 29310 at 30316 at 29
ENERGY HELICITY(EHI) 000000000000
1 KM SHEAR (Kts) 242220212122191613865
3 KM SHEAR (Kts) 353332302725221916172021
6 KM SHEAR (Kts) 444343434241403732292725
UP VERT VELOCITY (m/s) ------------------------------------
WBZ (Ft) 000000000000
CRAVEN SIG SEVERE 000000000000
SUPERCELL COMPOSITE (SCP) 000000000000
SIG TORNADO (STP) 000000000000

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