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 KSAW - 09/22/2019
TIME (EDT)4 AM5 AM6 AM7 AM8 AM9 AM10 AM11 AM12 PM1 PM2 PM3 PM
SHOWALTER INDEX -2.87-3.19-5.93-5.13-1.263.20.62-31.933.984.195.38
LIFTED INDEX -5.15-4.99-6.21-6.42-5.6-4.59-4.19-5.19-0.272.163.364.64
SWEAT INDEX 291.04304.68400.55384.76255.4165.32212.4299.79203.21193.6191.06180.21
K INDEX 21.8318.6521.3724.622.5320.9125.4829.5524.0118.4921.321.54
TOTALS TOTAL INDEX 50.5151.3854.9254.6350.6144.3447.3452.5944.8641.5140.9839.13
LCL HEIGHT (Ft) 791654564732609642120721803171362239593995
LCL PRESSURE (mb) 942.73947.21950.39944.81948.69947.4928.78897.43864.61848.07838.02837.03
LCL TEMP (in C) 19.8219.9319.9919.919.8619.9619.0816.9113.9212.1810.9210.23
PRECIP WATER (in) 1.421.311.341.41.251.161.211.381.31.211.251.21
CAPE (J/Kg) 1484.121378.491439.001542.801481.941328.72971.05512.58132.933.782.602.02
NCAPE (J/Kg) 0.150.140.150.160.160.140.10.070.0300.010.01
CINS (J/Kg) -4.04-3.09-10.01-17.20-21.08-2.44-1.30-1.57-2.81-147.83-1.96-5.91
LID STRENGTH (C) 55.51.74.51313.293.61.54.63.73.8
EQ LEVEL (Ft) 3522235620356783668236480360433543826786185081386963096331
LFC (Ft) 3771365145974742560438793401369146501130552115506
BULK RICHARDSON 83.1057.9036.59109.8070.2871.0141.3319.09------------
BRN SHEAR (m/s) 17.923.839.314.121.118.723.526.9------------
SRH ( 0 - 1Km) (m/s) 45.3349.08116.4456.8453.0252.0922.03-16.641.226.027.076.08
SRH ( 0 - 3Km) (m/s) 32.944.9122.45.73.5-31.7-100.6-228.9-129.2-127-146.7-100.9
STORM MOTION 252 at 38255 at 36257 at 32251 at 37253 at 34254 at 33252 at 38236 at 44243 at 38257 at 32265 at 31266 at 30
ENERGY HELICITY(EHI) 0.310.391.10.050.03-0.26-0.61-0.73-0.11000
1 KM SHEAR (Kts) 26222223232420149764
3 KM SHEAR (Kts) 303132252525323430221822
6 KM SHEAR (Kts) 313438373731222142394447
UP VERT VELOCITY (m/s) 535152545350433116322
WBZ (Ft) 837083648370836783558346834983678361833783558361
CRAVEN SIG SEVERE 23.6824.1328.1529.3928.2321.2115.542.870.080.060.05
SUPERCELL COMPOSITE (SCP) 0.712.80.10.1-0.700-0.2000
SIG TORNADO (STP) 0.60.61.60.80.80.7000000

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