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 - 11/15/2019
TIME (EST)6 AM7 AM8 AM9 AM10 AM11 AM12 PM1 PM2 PM3 PM4 PM5 PM
SHOWALTER INDEX 23.9224.4525.8926.4626.9127.7228.4328.6928.9928.9128.7128.58
LIFTED INDEX 25.126.0626.8227.5127.7828.5729.4830.0630.4630.7530.730.89
SWEAT INDEX 139.69142.61143.21138.63133.87131.34123.61117.11112.57107.699.9495.66
K INDEX -12.71-12.05-15.86-16.35-15.47-16.88-17.35-18.23-20.86-24.36-26.53-28.95
TOTALS TOTAL INDEX 14.913.468.427.37.786.355.915.543.952.412.862.78
LCL HEIGHT (Ft) 185614851297141915551576147513901372159816541434
LCL PRESSURE (mb) 919.74933.61940.07936.6933.57935.27937.93941.98942.67936.42933.88940.81
LCL TEMP (in C) -7.84-8.1-8.19-8.12-7.59-7.74-8.16-8.22-8.57-9.27-9.81-9.91
PRECIP WATER (in) 0.330.350.350.340.330.310.290.280.260.240.230.21
CAPE (J/Kg) 0.000.000.000.001.115.514.565.205.533.321.521.12
NCAPE (J/Kg) 000000.010.010.010.010.010.010.01
CINS (J/Kg) 0.000.000.000.00-0.84-0.78-0.79-0.79-0.77-0.78-0.76-0.71
LID STRENGTH (C) 31.132.333.834.933.833.634.234.835.4363636.2
EQ LEVEL (Ft) ------------37674201420441934194386737043589
LFC (Ft) ------------30122881281227102702283929032863
BULK RICHARDSON ------------------------------------
BRN SHEAR (m/s) ------------------------------------
SRH ( 0 - 1Km) (m/s) 48.2623.94-31.05-80.04-88.42-62.92-44.24-37.34-30.53-20.35-19.84-37.55
SRH ( 0 - 3Km) (m/s) -141-162.4-183.9-185.7-204.7-200.1-165.6-155.4-153.6-128.4-97.6-83.1
STORM MOTION 302 at 54304 at 55305 at 56308 at 55310 at 53312 at 52313 at 50315 at 48317 at 47318 at 46320 at 44322 at 43
ENERGY HELICITY(EHI) 00000-0.010-0.01-0.01000
1 KM SHEAR (Kts) 22232525191513121110910
3 KM SHEAR (Kts) 605655535049484645444240
6 KM SHEAR (Kts) 737272706461595755545150
UP VERT VELOCITY (m/s) ------------13333321
WBZ (Ft) 000000000000
CRAVEN SIG SEVERE 00000.040.170.140.150.160.090.040.03
SUPERCELL COMPOSITE (SCP) 000000000000
SIG TORNADO (STP) 000000000000

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