Sounding Index Descriptions


-STANDARD-

FRZLowest freezing level (mb) or BG for below ground
WB0Wet bulb zero (mb) or BG for below ground
PWPrecipitable water (in)
RHAverage relative humidity from surface to 500 mb (%)
MAXTMaximum estimated forecast temperature (C) using a 150mb layer
TH1000-500 mb thickness (m)
L57700-500 mb lapse rate (C/km)
LCLLifting condensation level (mb) using parcel choice
LILifted index @ 500 mb (C) using parcel choice
SIShowalter index (C)
TTTotal totals index (C)
KIK index
SWSWEAT index
EIEnergy index (cal)

-PARCEL- : Thermodynamic Parameters

CAPEConvective available potential energy (J/kg) using parcel choice
CINHConvective inhibition (J/kg) using parcel choice
LCLLifting condensation level (mb) using parcel choice
CAPCap strength (C) using parcel choice
LFCLevel of free convection (mb) using parcel choice
ELEquilibrium level (mb) using parcel choice
MPLMaximum parcel level (mb) using parcel choice

-WIND- : Kinematic Parameters

STMEstimated storm motion (knts) from 0-6 km AGL mean layer, spd 75% of mean, dir 30 deg veer from mean
HEL0-3 km AGL storm relative helicity
SHR+0-3 km AGL positive shear magnitude (sum of veering shear values)
SRDS0-3 km AGL storm relative directional shear (directional difference of storm relative winds)
EHI0-3 km AGL energy helicity index
BRNBulk Richardson number
BSHR0-6 km AGL bulk shear value (kts)
n/a
      MODEL GRIDDED SOUNDING PLOTTING (Ver 5.52-LINUX-X11)

Current filename: /home/data/models/gfs/2109151200F048.gfs
Reading from grid file:/home/data/models/gfs/2109151200F048.gfs
Searching file for grids...
VAR_make_datatype: no ltype: 10
VAR_make_datatype: no ltype: 10
Date: 48 hour GFS valid 12Z FRI 17 SEP 21
Station: 58.51,28.05
Latitude:   58.51
Longitude:  28.05
-------------------------------------------------------------------------------
LEV PRES  HGHT  TEMP  DEWP  RH  DD   WETB DIR SPD THETA THE-V THE-W THE-E   W
     mb     m     C     C    %   C     C  deg knt   K     K     K     K    g/kg
-------------------------------------------------------------------------------
SFC 1015    55  12.2   1.4  48 10.7   7.1  88   9 284.1 284.8 279.4 295.8  4.17
  1 1000   182  10.1   0.2  50  9.9   5.5  92  14 283.2 283.9 278.7 294.2  3.87
  2  950   605   5.9  -0.8  62  6.7   2.9  95  16 283.2 283.8 278.6 293.9  3.80
  3  900  1044   1.8  -1.6  79  3.3   0.4  97  15 283.3 284.0 278.6 294.0  3.79
  4  850  1502  -2.4  -2.9  97  0.4  -2.6 102  15 283.6 284.2 278.6 293.9  3.64
  5  800  1984  -1.1 -15.5  33 14.4  -5.5 112  13 290.0 290.2 278.8 294.3  1.43
  6  750  2497  -2.1 -20.7  23 18.5  -7.2  97  11 294.3 294.4 280.1 297.3  0.98
  7  700  3043  -3.7 -29.3  12 25.6  -9.4  78   9 298.4 298.5 281.3 300.0  0.48
  8  650  3626  -5.9 -33.5   9 27.6 -11.5  45   7 302.3 302.3 282.8 303.5  0.35
  9  600  4248  -9.7 -25.0  28 15.3 -13.4  24   6 304.9 305.1 284.4 307.7  0.84
 10  550  4914 -13.8 -25.3  37 11.5 -16.4 354   6 307.7 307.8 285.5 310.6  0.89
 11  500  5632 -17.8 -27.4  43  9.6 -19.8 334  13 311.4 311.5 286.8 314.1  0.81
 12  450  6412 -22.9 -26.7  71  3.8 -23.7 323  15 314.5 314.6 288.0 317.7  0.96
 13  400  7265 -29.2 -29.5  97  0.3 -29.2 315  17 317.0 317.2 288.7 319.9  0.83
 14  350  8204 -36.8 -36.9  99  0.1 -36.8 310  18 319.1 319.1 288.9 320.7  0.46
 15  300  9250 -45.3 -49.3  64  3.9 -45.5 302  26 321.5 321.5 289.4 322.0  0.14
 16  250 10442 -54.1 -55.7  82  1.6 -54.2 297  39 325.6 325.6 290.5 325.9  0.08
 17  200 11865 -53.4 -69.5  12 16.1 -53.7 302  36 348.2 348.2 296.3 348.2  0.02
 18  150 13715 -54.1 -80.0   3 25.9 -54.5 303  25 376.8 376.8 301.7 376.9  0.00
 19  100 16313 -55.3 -83.7   2 28.4 -55.8 313  18 420.8 420.8 307.8 420.8  0.00
TRP                                             0                              
WND                                             0                              

Sounding variables and indices
1000-500 mb thick:      5449.89 m
Freezing level:          878.97 mb =  1236.70 m =  4057.37 ft
Wetbulb zero:            893.79 mb =  1099.79 m =  3608.19 ft
Precipitable water:        0.45 inches
Sfc-500 mean rel hum:     39.85 %
Est. max temperature:     11.61 C =   52.90 F
Sfc-Lift cond lev (LCL): 862.70 mb =  1383.04 m =  4537.47 ft T:   -1.34 C
700-500 lapse rate:        5.43 C/km
ThetaE index:              1.90 C Layer 1000.0- 900.0 mb
Conv cond level (CCL):   854.39 mb =  1460.44 m =  4791.41 ft
  Mean mixing ratio:       3.85 g/kg
  Conv temperature:       11.67 C =   53.00 F
Cap Strength:             13.40 C
Lifted Index:             15.39 C Risk: None
Lifted Index @300 mb:     19.44 C
Lifted Index @700 mb:      9.22 C
Showalter Index:          15.57 C Risk: None
Total Totals Index:       30.20 C Risk: None
  Vertical Totals Index:  15.32 C
  Cross Totals Index:     14.88 C
K Index:                 -13.13   Risk: None
Sweat Index:              42.15   Risk: None
Energy Index:              4.26   Risk: None

Parcel Indices
Parcel: using 100 mb layer
CAPE (B+):                 1.52 J/kg
Max Up Vert Vel:           1.74 m/s
Conv Inhibition (B-):  15607.10 J/kg
Cap Strength:             15.04 C
Lift Cond Lev (LCL):     857.89 mb =  1427.80 m =  4684.33 ft
Lev Free Conv (LFC):      -1.00 mb = -9999.00 m = -9999.00 ft

Wind Parameters
Mean winds (0-6000m):             68.2 at   10.8 knts
Storm direction:                  98.2 at    8.1 knts
Shear (0-3000m)              pos:    0.9 neg:    1.2 tot:    2.2 10-3/s
Storm rel Dir Shear (0-3000m):     -17.7 deg
Storm rel helicity (0-3000m) pos:   11.6 neg:   -5.5 tot:    6.1 m^2/s^2
                             ave:    2.0 10^-3 m/s^2 rel:   0.12
Storm rel vorticity (0-3000m) horiz:    3.5 stream:    0.4 10^-3/s
Energy-Hel index:          0.00
Bulk Rich Number:          0.29
Bulk Shear:                5.20 m/s
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GFS
2018061012
WLD
-300 60
-102 102
42 42
48
850
temp
ml
severe
58.51
28.05
https://climate.cod.edu/data/forecast