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 - 04/17/2025
TIME (EDT)9 AM10 AM11 AM12 PM1 PM2 PM3 PM4 PM5 PM6 PM7 PM8 PM
SHOWALTER INDEX 4.254.485.968.058.4111.2810.5510.379.79.610.1711.73
LIFTED INDEX 9.9812.0412.2912.8111.2710.5110.5510.9311.2612.1711.8212.14
SWEAT INDEX 104.57128.44116.19113.44117.3487.1196.5892.2398.8104.9898.35101.33
K INDEX 15.8615.1912.8610.8410.799.8517.4618.9819.1417.3516.9214.6
TOTALS TOTAL INDEX 46.1945.3843.1639.339.2735.6636.7237.1338.338.7638.3236.01
LCL HEIGHT (Ft) 214824502508321432463236355625071544175217131861
LCL PRESSURE (mb) 884.3874.44872.09848.97846.51850.05838.98874.05905.95900.29902.31897.77
LCL TEMP (in C) 1.070.370.880.30.961.791.282.754.032.742.662.23
PRECIP WATER (in) 0.660.690.650.660.690.740.80.840.850.810.790.75
CAPE (J/Kg) 0.000.000.000.000.000.000.000.000.000.000.760.00
NCAPE (J/Kg) 000000000000
CINS (J/Kg) 0.000.000.000.000.000.000.000.000.000.00-0.780.00
LID STRENGTH (C) 5.913.917.620.320.415.715.614.914.115.816.416.6
EQ LEVEL (Ft) ------------------------------4070---
LFC (Ft) ------------------------------3507---
BULK RICHARDSON ------------------------------------
BRN SHEAR (m/s) ------------------------------------
SRH ( 0 - 1Km) (m/s) -57.52-68.96-83.91-34.5-53.05-41.15-33.34-38.46-55.26-77.25-97.4-99.14
SRH ( 0 - 3Km) (m/s) 90.4100.8-198.8-95.2143.6206.7222.8166.9130.530.47.3-17.4
STORM MOTION 267 at 26263 at 24270 at 21255 at 22260 at 24271 at 22263 at 21274 at 22282 at 26285 at 29288 at 29291 at 29
ENERGY HELICITY(EHI) 000000000000
1 KM SHEAR (Kts) 20242418128879111415
3 KM SHEAR (Kts) 354037385037323228272522
6 KM SHEAR (Kts) 565156626354595449534648
UP VERT VELOCITY (m/s) ------------------------------1---
WBZ (Ft) 705370536015601560066033340260336033604560482694
CRAVEN SIG SEVERE 00000000000.020
SUPERCELL COMPOSITE (SCP) 000000000000
SIG TORNADO (STP) 000000000000

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