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 - 02/22/2020
TIME (EST)6 PM7 PM8 PM9 PM10 PM11 PM12 AM1 AM2 AM3 AM4 AM5 AM
SHOWALTER INDEX 10.7410.089.749.278.919.419.799.739.39.29.549.68
LIFTED INDEX 13.9713.5113.181312.612.8113.1113.1912.9212.5612.4912.44
SWEAT INDEX 81.1178.4778.975.3672.6172.9492.77129.07170.9180.92182.54147.36
K INDEX -34.53-24.66-19.07-18.2-12.05-12.6-22.11-27.12-23.49-16.09-13.05-13.26
TOTALS TOTAL INDEX 27.9331.0131.6832.1132.3729.1126.327.2129.2129.4827.7928.92
LCL HEIGHT (Ft) 471038263398332332572711224920481854163513541082
LCL PRESSURE (mb) 814.81844.57859.03861.14863.02881.65895.34903.35909.39916.09923.66932.43
LCL TEMP (in C) -8.24-8.03-7.91-8.47-9.06-8.44-8.41-8.53-8.38-8.17-8.3-8.64
PRECIP WATER (in) 0.110.130.140.140.170.180.160.140.150.190.220.21
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) 1615.41514.514.314.514.915.41616.917.416
EQ LEVEL (Ft) ------------------------------------
LFC (Ft) ------------------------------------
BULK RICHARDSON ------------------------------------
BRN SHEAR (m/s) ------------------------------------
SRH ( 0 - 1Km) (m/s) 74.1351.5747.5646.0651.2155.0641.6832.7349.8649.7252.8461.69
SRH ( 0 - 3Km) (m/s) 167.5183.5176.8158.3152129.293.429.4-4.3623.541.4
STORM MOTION 290 at 16289 at 13288 at 12289 at 13294 at 14296 at 15290 at 20272 at 28258 at 29264 at 19260 at 15260 at 18
ENERGY HELICITY(EHI) 000000000000
1 KM SHEAR (Kts) 2321212019171279131820
3 KM SHEAR (Kts) 191817191916141416182023
6 KM SHEAR (Kts) 302725242424242322212223
UP VERT VELOCITY (m/s) ------------------------------------
WBZ (Ft) 92700000000000
CRAVEN SIG SEVERE 000000000000
SUPERCELL COMPOSITE (SCP) 000000000000
SIG TORNADO (STP) 000000000000

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