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 KABR - 03/29/2023
TIME (EST)10 AM11 AM12 PM1 PM2 PM3 PM4 PM5 PM6 PM7 PM8 PM9 PM
SHOWALTER INDEX 20.6720.320.4720.8421.321.3821.4821.1121.0820.3720.6620.28
LIFTED INDEX 25.9225.5125.4125.7425.7825.7326.1926.4826.6826.2725.7725.57
SWEAT INDEX 71.8864.7760.3363.1873.2779.1281.8283.1381.4779.9178.9981.23
K INDEX -38.76-38.91-39.54-42.55-44.43-50.82-56.48-54.22-47.96-43.86-42.91-41.24
TOTALS TOTAL INDEX 16.3817.5215.5213.4512.369.855.054.345.958.868.919.83
LCL HEIGHT (Ft) 7553166510762060281531903151264816821110839
LCL PRESSURE (mb) 978.11962.6957.33943.93910.23884.68871.07871.66887.54919.54937.81947.15
LCL TEMP (in C) -20.64-20.68-16.44-14.43-14.78-15.78-16.25-15.96-14.56-12.41-12.16-12.83
PRECIP WATER (in) 0.080.080.080.070.070.070.060.070.080.090.110.12
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) 27.727.427.227.527.927.928.528.929.628.928.327.7
EQ LEVEL (Ft) ------------------------------------
LFC (Ft) ------------------------------------
BULK RICHARDSON ------------------------------------
BRN SHEAR (m/s) ------------------------------------
SRH ( 0 - 1Km) (m/s) -23.595.096.73.6118.920.3813.6715.5434.3660.9989.8988.19
SRH ( 0 - 3Km) (m/s) -32.9-27.20.410.727.349.572.492.3100.9118.6116.3125.1
STORM MOTION 328 at 30324 at 29319 at 27312 at 27309 at 26306 at 27307 at 25306 at 26307 at 26307 at 25309 at 24308 at 23
ENERGY HELICITY(EHI) 000000000000
1 KM SHEAR (Kts) 41113322481212
3 KM SHEAR (Kts) 212117161519232729282725
6 KM SHEAR (Kts) 605961636364676768666461
UP VERT VELOCITY (m/s) ------------------------------------
WBZ (Ft) 000000000000
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