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/2112041200F048.gfs
Reading from grid file:/home/data/models/gfs/2112041200F048.gfs
Searching file for grids...
VAR_make_datatype: no ltype: 10
VAR_make_datatype: no ltype: 10
Date: 48 hour GFS valid 12Z MON  6 DEC 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 1013    55 -12.8 -14.4  88  1.5 -13.2  62   5 259.3 259.5 259.2 262.6  1.24
  1 1000   156 -13.9 -15.1  91  1.2 -14.1  69   8 259.3 259.5 259.0 262.5  1.18
  2  950   544 -13.4 -13.8  96  0.4 -13.5  97   9 263.6 263.8 262.7 267.4  1.38
  3  900   957 -12.5 -12.6  99  0.2 -12.5 117   6 268.7 268.9 266.8 273.1  1.61
  4  850  1393 -13.8 -15.2  89  1.4 -14.1 135   6 271.7 271.9 268.4 275.6  1.38
  5  800  1851 -15.9 -19.8  72  3.9 -16.7 161   5 274.2 274.3 269.3 277.0  0.99
  6  750  2335 -18.5 -25.0  56  6.6 -19.5 177   4 276.5 276.7 270.2 278.5  0.67
  7  700  2847 -20.5 -35.0  26 14.5 -22.1 217   5 279.8 279.9 271.5 280.7  0.28
  8  650  3393 -22.9 -43.5  13 20.6 -24.6 235  10 283.1 283.1 273.2 283.5  0.13
  9  600  3975 -26.8 -42.6  21 15.9 -28.0 236  16 285.1 285.2 274.3 285.6  0.15
 10  550  4598 -30.6 -48.9  15 18.4 -31.6 240  21 287.8 287.8 275.7 288.1  0.08
 11  500  5269 -34.3 -54.8  11 20.4 -35.2 244  26 291.2 291.2 277.3 291.4  0.05
 12  450  5999 -38.4 -58.8  10 20.3 -39.1 247  31 295.0 295.0 279.1 295.1  0.03
 13  400  6801 -42.8 -63.2   9 20.4 -43.3 253  32 299.4 299.4 281.1 299.5  0.02
 14  350  7689 -49.1 -64.1  16 15.0 -49.4 258  29 302.5 302.5 282.4 302.6  0.02
 15  300  8688 -53.9 -68.5  15 14.6 -54.1 257  30 309.4 309.4 285.1 309.5  0.01
 16  250  9856 -54.3 -69.2  14 14.9 -54.5 259  23 325.3 325.3 290.4 325.3  0.01
 17  200 11286 -54.2 -76.1   5 21.9 -54.5 278  23 346.9 346.9 296.0 347.0  0.01
 18  150 13129 -55.3 -81.3   3 26.0 -55.7 269  28 374.8 374.8 301.4 374.8  0.00
 19  100 15690 -58.6 -84.3   2 25.8 -58.9 274  24 414.5 414.5 307.0 414.6  0.00
TRP                                             0                              
WND                                             0                              

Sounding variables and indices
1000-500 mb thick:      5113.48 m
Freezing level:      Surface below freezing
Wetbulb zero:        Below ground
Precipitable water:        0.16 inches
Sfc-500 mean rel hum:     48.30 %
Est. max temperature:     -1.24 C =   29.77 F
Sfc-Lift cond lev (LCL): 988.60 mb =   242.57 m =   795.83 ft T:  -13.75 C
700-500 lapse rate:        5.71 C/km
ThetaE index:              0.18 C Layer 1000.0- 950.0 mb
Conv cond level (CCL):  1000.00 mb =   155.73 m =   510.93 ft
  Mean mixing ratio:       1.34 g/kg
  Conv temperature:      -12.57 C =    9.37 F
Cap Strength:             18.35 C
Lifted Index:             20.51 C Risk: None
Lifted Index @300 mb:     30.56 C
Lifted Index @700 mb:     13.02 C
Showalter Index:          13.07 C Risk: None
Total Totals Index:       39.70 C Risk: None
  Vertical Totals Index:  20.54 C
  Cross Totals Index:     19.16 C
K Index:                  -9.12   Risk: None
Sweat Index:              37.14   Risk: None
Energy Index:              3.31   Risk: None

Parcel Indices
Parcel: using 100 mb layer
CAPE (B+):                31.53 J/kg
Max Up Vert Vel:           7.94 m/s
Conv Inhibition (B-):  23396.87 J/kg
Cap Strength:             20.49 C
Lift Cond Lev (LCL):     951.28 mb =   534.10 m =  1752.28 ft
Lev Free Conv (LFC):      -1.00 mb = -9999.00 m = -9999.00 ft

Wind Parameters
Mean winds (0-6000m):            230.3 at   13.2 knts
Storm direction:                 260.3 at    9.9 knts
Shear (0-3000m)              pos:    1.9 neg:    0.0 tot:    1.9 10-3/s
Storm rel Dir Shear (0-3000m):      48.3 deg
Storm rel helicity (0-3000m) pos:   45.0 neg:   -1.3 tot:   43.7 m^2/s^2
                             ave:   14.6 10^-3 m/s^2 rel:   0.46
Storm rel vorticity (0-3000m) horiz:    4.0 stream:    1.9 10^-3/s
Energy-Hel index:          0.01
Bulk Rich Number:          0.55
Bulk Shear:               57.29 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