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 - 04/02/2025
TIME (EDT)7 PM8 PM9 PM10 PM11 PM12 AM1 AM2 AM3 AM4 AM5 AM6 AM
SHOWALTER INDEX 14.8315.0214.9414.2713.6413.7213.7413.0511.711.3311.0410.84
LIFTED INDEX 15.3215.3714.9114.2313.6813.9314.2713.9713.4813.2312.6311.93
SWEAT INDEX 68.2670.8475.4673.9874.3676.377.0281.3380.0871.1966.5870.4
K INDEX 9.88.949.4910.0110.5110.4110.3910.6812.212.1912.2910.69
TOTALS TOTAL INDEX 33.3332.8533.1334.3735.6535.5235.4236.5438.6739.6340.5741.2
LCL HEIGHT (Ft) 586404406357359466559863852861806819
LCL PRESSURE (mb) 931.85938.34939.47942.5943.33940.88937.18929.53929.9931.19934.24934.99
LCL TEMP (in C) -1.58-0.97-0.78-0.84-1.04-1.33-1.99-2.73-3.29-3.91-4.35-4.38
PRECIP WATER (in) 0.470.470.470.460.450.450.440.440.440.440.410.37
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) 19.519.819.218.217.21717.417.316.31614.412.3
EQ LEVEL (Ft) ------------------------------------
LFC (Ft) ------------------------------------
BULK RICHARDSON ------------------------------------
BRN SHEAR (m/s) ------------------------------------
SRH ( 0 - 1Km) (m/s) -66.5-82.9950.76-94.76-85.96-75.01-63.98-25.5529.9865.28-87.61-121.23
SRH ( 0 - 3Km) (m/s) 77.835.437.159120.7134.413175.815.242.185.590.9
STORM MOTION 289 at 24280 at 24359 at 15302 at 34295 at 29299 at 31310 at 37326 at 40343 at 38350 at 31309 at 37300 at 36
ENERGY HELICITY(EHI) 000000000000
1 KM SHEAR (Kts) 161919212121222121242323
3 KM SHEAR (Kts) 171414151917151417232221
6 KM SHEAR (Kts) 261210810131823201512
UP VERT VELOCITY (m/s) ------------------------------------
WBZ (Ft) 000000000000
CRAVEN SIG SEVERE 000000000000
SUPERCELL COMPOSITE (SCP) 000000000000
SIG TORNADO (STP) 000000000000

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