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)6 AM7 AM8 AM9 AM10 AM11 AM12 PM1 PM2 PM3 PM4 PM5 PM
SHOWALTER INDEX 18.9520.0520.5520.420.4620.5220.7720.7920.9420.9221.221.46
LIFTED INDEX 23.8725.2326.126.3826.3825.9325.9225.8625.5925.6326.1726.89
SWEAT INDEX 92.0586.5779.9876.7870.6764.1661.2264.7872.8577.7279.8983.16
K INDEX -33.09-34.63-34.67-33.44-35.12-38.08-41.67-44.87-46.96-52.03-55.66-52.18
TOTALS TOTAL INDEX 24.2221.8121.0620.8719.8417.2814.5112.7211.8810.025.734.81
LCL HEIGHT (Ft) 163911808997549721075131017321913234722212222
LCL PRESSURE (mb) 924.98939.96949.42955.17948.19945.37936.22921.48914.92900.48903.47903.22
LCL TEMP (in C) -23.78-23.6-23.49-23.42-24.46-22.14-19.19-17.34-16.16-16.25-15.62-15.53
PRECIP WATER (in) 0.070.080.090.10.10.090.090.080.080.080.070.08
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) 23.624.325.526.325.825.725.92626.326.627.328.5
EQ LEVEL (Ft) ------------------------------------
LFC (Ft) ------------------------------------
BULK RICHARDSON ------------------------------------
BRN SHEAR (m/s) ------------------------------------
SRH ( 0 - 1Km) (m/s) -77.37-57.08-50.19-46.42-35.1410.52.1716.7528.3314.545.0616.48
SRH ( 0 - 3Km) (m/s) -65.2-59.1-50.6-34.7-40-13.96.923.740.752.168.192.9
STORM MOTION 327 at 40331 at 38329 at 35326 at 33324 at 30321 at 28316 at 27311 at 28308 at 28306 at 28307 at 26306 at 27
ENERGY HELICITY(EHI) 000000000000
1 KM SHEAR (Kts) 14129751124222
3 KM SHEAR (Kts) 323026211916141618222527
6 KM SHEAR (Kts) 736860595858586163656868
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