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/2109160600F006.gfs
Reading from grid file:/home/data/models/gfs/2109160600F006.gfs
Searching file for grids...
VAR_make_datatype: no ltype: 10
VAR_make_datatype: no ltype: 10
Date: 6 hour GFS valid 12Z THU 16 SEP 21
Station: 59.03,25.46
Latitude:   59.03
Longitude:  25.46
-------------------------------------------------------------------------------
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 1012    77  11.1   1.6  52  9.5   6.6 102   4 283.3 284.0 279.2 295.2  4.23
  1 1000   173   9.5   0.8  54  8.7   5.5 105   6 282.7 283.4 278.6 294.0  4.04
  2  950   595   5.3  -0.0  68  5.4   2.9 109   6 282.6 283.3 278.6 293.9  4.01
  3  900  1033   1.1  -0.8  87  2.0   0.3 115   5 282.7 283.4 278.6 293.9  4.00
  4  850  1490  -2.6  -2.7  99  0.1  -2.6 121   4 283.5 284.1 278.6 293.9  3.70
  5  800  1974   1.0 -19.6  20 20.6  -5.0 340   0 292.2 292.4 279.3 295.4  1.01
  6  750  2491  -0.7 -21.2  19 20.5  -6.4 294   4 295.9 296.0 280.8 298.8  0.94
  7  700  3040  -1.8 -21.2  21 19.4  -7.4 302   8 300.4 300.6 282.8 303.7  1.00
  8  650  3627  -4.1 -23.5  20 19.4  -9.3 302  11 304.4 304.5 284.3 307.3  0.88
  9  600  4254  -6.8 -23.6  25 16.8 -11.3 312  13 308.2 308.4 285.8 311.4  0.95
 10  550  4929 -10.7 -17.8  56  7.1 -12.9 303  14 311.4 311.7 287.8 317.0  1.71
 11  500  5654 -15.9 -19.7  72  3.8 -16.9 306  20 313.7 314.0 288.4 319.0  1.60
 12  450  6440 -20.9 -24.5  73  3.5 -21.7 302  25 316.9 317.1 289.0 320.9  1.17
 13  400  7300 -26.8 -36.7  39  9.9 -28.2 301  24 320.1 320.2 289.2 321.6  0.41
 14  350  8249 -34.3 -40.7  53  6.3 -35.0 309  31 322.4 322.5 289.9 323.6  0.31
 15  300  9306 -43.4 -46.5  71  3.2 -43.6 301  42 324.2 324.3 290.3 325.0  0.19
 16  250 10505 -53.6 -54.8  86  1.2 -53.6 282  47 326.4 326.5 290.8 326.8  0.09
 17  200 11916 -56.1 -64.1  36  8.0 -56.2 295  35 344.0 344.0 295.3 344.1  0.03
 18  150 13761 -54.3 -79.6   3 25.3 -54.6 297  25 376.6 376.6 301.7 376.6  0.00
 19  100 16345 -56.5 -84.4   2 27.9 -56.9 276  16 418.6 418.6 307.6 418.6  0.00
TRP                                             0                              
WND                                             0                              

Sounding variables and indices
1000-500 mb thick:      5481.71 m
Freezing level:          884.58 mb =  1174.06 m =  3851.85 ft
Freezing level:          814.03 mb =  1838.40 m =  6031.43 ft
Freezing level:          769.86 mb =  2285.74 m =  7499.05 ft
Wetbulb zero:            894.66 mb =  1080.78 m =  3545.81 ft
Precipitable water:        0.50 inches
Sfc-500 mean rel hum:     46.10 %
Est. max temperature:     11.07 C =   51.93 F
Sfc-Lift cond lev (LCL): 875.36 mb =  1255.00 m =  4117.40 ft T:   -0.66 C
700-500 lapse rate:        5.36 C/km
ThetaE index:              1.35 C Layer 1000.0- 900.0 mb
Conv cond level (CCL):   867.68 mb =  1325.48 m =  4348.63 ft
  Mean mixing ratio:       4.03 g/kg
  Conv temperature:       10.98 C =   51.76 F
Cap Strength:             16.64 C
Lifted Index:             17.40 C Risk: None
Lifted Index @300 mb:     21.47 C
Lifted Index @700 mb:     11.21 C
Showalter Index:          17.46 C Risk: None
Total Totals Index:       26.51 C Risk: None
  Vertical Totals Index:  13.31 C
  Cross Totals Index:     13.21 C
K Index:                  -8.76   Risk: None
Sweat Index:              28.42   Risk: None
Energy Index:              5.27   Risk: None

Parcel Indices
Parcel: using 100 mb layer
CAPE (B+):                 1.09 J/kg
Max Up Vert Vel:           1.48 m/s
Conv Inhibition (B-):  16747.06 J/kg
Cap Strength:             17.33 C
Lift Cond Lev (LCL):     874.25 mb =  1265.13 m =  4150.63 ft
Lev Free Conv (LFC):      -1.00 mb = -9999.00 m = -9999.00 ft

Wind Parameters
Mean winds (0-6000m):            307.2 at    9.5 knts
Storm direction:                 337.2 at    7.1 knts
Shear (0-3000m)              pos:    0.5 neg:    1.6 tot:    2.1 10-3/s
Storm rel Dir Shear (0-3000m):     103.1 deg
Storm rel helicity (0-3000m) pos:   19.1 neg:   -5.3 tot:   13.8 m^2/s^2
                             ave:    4.6 10^-3 m/s^2 rel:   0.49
Storm rel vorticity (0-3000m) horiz:    3.3 stream:    1.6 10^-3/s
Energy-Hel index:          0.00
Bulk Rich Number:          0.04
Bulk Shear:               29.61 m/s
Left-Click for Forecast Sounding
Right-click for Sounding Settings
Weather Type
Severe Winter
Parcel Type
Surface Based Mean Layer
Most Unstable Effective Inflow
Generate
Save Image
close this menu
Unable to generate sounding for point request.
Raw Sounding Text (S) Index Help (I) Show Map (M)
compass N E S W
Generating Sounding...

empty
GFS
2017081906
WLD
-300 60
-102 102
42 42
6
850
temp
ml
severe
59.03
25.46
https://climate.cod.edu/data/forecast