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 - 03/19/2025
TIME (EST)4 PM5 PM6 PM7 PM8 PM9 PM10 PM11 PM12 AM1 AM2 AM3 AM
SHOWALTER INDEX 12.3712.4612.0311.6411.2110.429.89.068.918.939.4710.1
LIFTED INDEX 12.2112.2111.811.4711.1510.7810.319.679.679.9210.6511.33
SWEAT INDEX 80.4480.4583.2584.786.8692.196.9795.5794.8993.9392.7987.57
K INDEX -12.74-11.26-8.2-6.72-5.56-6.15-6.03-3.16-0.75-0.710.180.73
TOTALS TOTAL INDEX 34.4333.9535.4236.7538.074041.1942.6342.6742.5141.2539.6
LCL HEIGHT (Ft) 733676767274664254774396380734313107287429452820
LCL PRESSURE (mb) 726.66715.44728.74750.51789.25825.98847.69857.95868.44874.89873.23877.3
LCL TEMP (in C) -16.81-17.86-16.69-15.14-13-11.17-10.35-10.13-10.16-10.57-11.26-11.68
PRECIP WATER (in) 0.140.140.150.170.190.20.210.210.210.20.210.22
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) 161615.214.614.113.613.1121212.112.513.1
EQ LEVEL (Ft) ------------------------------------
LFC (Ft) ------------------------------------
BULK RICHARDSON ------------------------------------
BRN SHEAR (m/s) ------------------------------------
SRH ( 0 - 1Km) (m/s) -33.58-31.9812.3921.9337.0565.5573.5193.6866.8225.0827.0938.73
SRH ( 0 - 3Km) (m/s) -23.6-24.6-22.9-9.114.643.381.688.263.625.625.932.9
STORM MOTION 319 at 35322 at 38350 at 42351 at 41351 at 42353 at 41351 at 401 at 312 at 273 at 280 at 30358 at 28
ENERGY HELICITY(EHI) 000000000000
1 KM SHEAR (Kts) 889121720222221181312
3 KM SHEAR (Kts) 121415182325252526252325
6 KM SHEAR (Kts) 3713192329333742474949
UP VERT VELOCITY (m/s) ------------------------------------
WBZ (Ft) 24624624324300000000
CRAVEN SIG SEVERE 000000000000
SUPERCELL COMPOSITE (SCP) 000000000000
SIG TORNADO (STP) 000000000000

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