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 - 09/24/2018
TIME (EDT)4 PM5 PM6 PM7 PM8 PM9 PM10 PM11 PM12 AM1 AM2 AM3 AM
SHOWALTER INDEX 13.1812.5711.568.035.465.874.242.882.112.121.661.7
LIFTED INDEX 6.566.657.227.717.685.444.083.112.31.781.571.02
SWEAT INDEX 117.75113.79108.96108.38154.22152.1189.71211.29204.85196.8198.77199.27
K INDEX -14.2-11.87-7.592.664.881.783.566.256.386.065.741.32
TOTALS TOTAL INDEX 21.4424.1427.5237.0241.3340.7542.844.4345.6946.034746.91
LCL HEIGHT (Ft) 2437293629242547205916541465153114291137905634
LCL PRESSURE (mb) 895.07877.95878.32889.3905.67920.96924.97922.76927.66933.71942.13951.36
LCL TEMP (in C) 10.99.679.619.9710.3610.7810.9311.2311.8312.3813.2513.93
PRECIP WATER (in) 0.540.530.530.580.670.760.780.790.820.860.870.85
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) 10.88.912.213.8214.90.200.41.851.9
EQ LEVEL (Ft) ------------------------------------
LFC (Ft) ------------------------------------
BULK RICHARDSON ------------------------------------
BRN SHEAR (m/s) ------------------------------------
SRH ( 0 - 1Km) (m/s) 56.4268.0475.7693.61122.02151.24170.72177.08174.79142.8100.86107.82
SRH ( 0 - 3Km) (m/s) 128.8120.8132168.7174.8141.1182.8226.9249.5219.7145108.3
STORM MOTION 197 at 21202 at 21206 at 21208 at 21216 at 22226 at 24229 at 26234 at 25243 at 24243 at 24245 at 27245 at 31
ENERGY HELICITY(EHI) 000000000000
1 KM SHEAR (Kts) 242323263031323230282327
3 KM SHEAR (Kts) 222525242321212223242728
6 KM SHEAR (Kts) 272829303132343534343334
UP VERT VELOCITY (m/s) ------------------------------------
WBZ (Ft) 843084248424725484128439841272638430838283918391
CRAVEN SIG SEVERE 000000000000
SUPERCELL COMPOSITE (SCP) 000000000000
SIG TORNADO (STP) 000000000000

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