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 - 04/01/2020
TIME (EDT)8 AM9 AM10 AM11 AM12 PM1 PM2 PM3 PM4 PM5 PM6 PM7 PM
SHOWALTER INDEX 11.9512.5812.3511.8211.4611.1810.9911.1311.1611.0611.0110.83
LIFTED INDEX 12.8913.0113.1212.9812.5312.1411.6311.4411.1810.9611.0311.1
SWEAT INDEX 19.2720.9330.3534.832.0228.2824.9624.4427.9228.4130.7928.71
K INDEX 9.688.438.399.7411.0912.4913.1111.8610.6710.039.449.21
TOTALS TOTAL INDEX 38.0736.8837.0438.1638.8939.3539.7739.5639.3139.3939.339.49
LCL HEIGHT (Ft) 849681709863939730653646901964934780
LCL PRESSURE (mb) 952.5958.01956.18952.24950.81956.96959.22959.86950.27947.97948.88954.7
LCL TEMP (in C) -1.54-0.690.230.71.291.661.972.492.582.62.592.61
PRECIP WATER (in) 0.430.420.410.430.450.450.460.450.430.420.410.4
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) 10.911.812.712.511.410.910.310.510.911.211.912.1
EQ LEVEL (Ft) ------------------------------------
LFC (Ft) ------------------------------------
BULK RICHARDSON ------------------------------------
BRN SHEAR (m/s) ------------------------------------
SRH ( 0 - 1Km) (m/s) -12.18-20.5-18.02-14.45-6.61-0.98-2.32-9.49-11.53-3.82-0.930.19
SRH ( 0 - 3Km) (m/s) 7.416.220.414.75.34.63.9-1.7-6.5-10.7-10.8-9.9
STORM MOTION 38 at 2034 at 2034 at 2034 at 2031 at 1923 at 2010 at 20358 at 21358 at 21358 at 21358 at 221 at 21
ENERGY HELICITY(EHI) 000000000000
1 KM SHEAR (Kts) 565420122345
3 KM SHEAR (Kts) 876534301000
6 KM SHEAR (Kts) 121211111212141821222527
UP VERT VELOCITY (m/s) ------------------------------------
WBZ (Ft) 014611455146114611458145814581461146114581458
CRAVEN SIG SEVERE 000000000000
SUPERCELL COMPOSITE (SCP) 000000000000
SIG TORNADO (STP) 000000000000

* Move Mouse Over Colored Cells For Further Details

PHP Script Developed By Jim Wyman
 SOUTHERN MARYLAND WEATHER
www.somdweather.com