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/2011241200F027.gfs
Reading from grid file:/home/data/models/gfs/2011241200F027.gfs
Searching file for grids...
VAR_make_datatype: no ltype: 10
VAR_make_datatype: no ltype: 220
VAR_make_datatype: no ltype: 220
VAR_make_datatype: no ltype: 220
VAR_make_datatype: no ltype: 10
Date: 27 hour GFS valid 15Z WED 25 NOV 20
Station: 57.88,27.00
Latitude:   57.88
Longitude:  27.00
-------------------------------------------------------------------------------
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 1000   112   5.6   5.3  98  0.3   5.5 203   4 278.7 279.7 278.6 294.0  5.58
  1 1000   115   5.8   5.5  98  0.3   5.6 205   6 278.9 279.9 278.8 294.3  5.64
  2  950   535   4.7   3.8  94  1.0   4.2 243  14 282.0 282.9 279.8 296.6  5.27
  3  900   973   1.8   1.4  97  0.4   1.6 256  15 283.3 284.2 279.8 296.5  4.71
  4  850  1434   1.1   0.7  97  0.4   0.9 282  27 287.3 288.1 281.6 300.7  4.72
  5  800  1920  -1.4  -1.8  97  0.4  -1.6 287  30 289.6 290.4 282.1 301.7  4.18
  6  750  2432  -4.5  -4.7  99  0.2  -4.6 288  31 291.7 292.3 282.3 302.2  3.59
  7  700  2972  -7.8  -7.9  99  0.1  -7.8 292  32 293.9 294.4 282.5 302.8  3.01
  8  650  3545 -10.5 -11.1  95  0.6 -10.8 303  33 297.0 297.5 283.2 304.7  2.51
  9  600  4157 -13.8 -15.1  90  1.3 -14.2 308  33 300.2 300.5 283.9 306.3  1.97
 10  550  4812 -18.7 -18.8 100  0.0 -18.7 308  36 301.8 302.1 284.1 306.8  1.58
 11  500  5515 -23.9 -23.9 100  0.0 -23.9 312  41 303.9 304.1 284.4 307.5  1.11
 12  450  6274 -30.1 -30.1 100 -0.0 -30.1 314  42 305.4 305.5 284.5 307.7  0.70
 13  400  7101 -36.8 -36.7 100 -0.0 -36.8 313  47 307.2 307.3 284.8 308.6  0.41
 14  350  8011 -43.8 -43.8 100 -0.0 -43.9 317  51 309.6 309.6 285.5 310.4  0.22
 15  300  9027 -52.0 -52.1  98  0.2 -52.0 321  57 312.1 312.1 286.2 312.5  0.10
 16  250 10186 -59.8 -60.1  96  0.3 -59.9 322  65 317.1 317.1 287.9 317.3  0.05
 17  200 11570 -60.4 -69.2  31  8.8 -60.4 317  61 337.2 337.2 293.6 337.2  0.02
 18  150 13391 -55.3 -78.6   4 23.2 -55.7 317  57 374.7 374.7 301.4 374.7  0.01
 19  100 15962 -58.9 -80.3   5 21.4 -59.2 316  48 414.0 414.0 307.0 414.0  0.01
 20   50 20276 -62.6 -84.8   4 22.2 -63.0 307  40 496.0 496.0 314.7 496.1  0.01
TRP                                             0                              
WND                                             0                              

Sounding variables and indices
1000-500 mb thick:      5400.04 m
Freezing level:          828.48 mb =  1643.22 m =  5391.06 ft
Wetbulb zero:            832.17 mb =  1604.10 m =  5262.72 ft
Precipitable water:        0.74 inches
Sfc-500 mean rel hum:     96.69 %
Est. max temperature:     14.13 C =   57.43 F
Sfc-Lift cond lev (LCL): 995.33 mb =   153.31 m =   502.98 ft T:    5.70 C
700-500 lapse rate:        6.33 C/km
ThetaE index:              0.05 C Layer  900.0- 850.0 mb
Conv cond level (CCL):   924.22 mb =   757.82 m =  2486.25 ft
  Mean mixing ratio:       5.22 g/kg
  Conv temperature:        9.55 C =   49.18 F
Cap Strength:              7.13 C
Lifted Index:              7.92 C Risk: None
Lifted Index @300 mb:     11.46 C
Lifted Index @700 mb:      3.98 C
Showalter Index:           4.58 C Risk: None
Total Totals Index:       49.48 C Risk: Scattered heavy thunderstorms
  Vertical Totals Index:  24.95 C
  Cross Totals Index:     24.52 C
K Index:                  25.47   Risk: 40-60 % chance of thunderstorms
Sweat Index:             111.70   Risk: None
Energy Index:              1.37   Risk: None

Parcel Indices
Parcel: using 100 mb layer
CAPE (B+):                16.78 J/kg
Max Up Vert Vel:           5.79 m/s
Conv Inhibition (B-):  23828.77 J/kg
Cap Strength:              7.78 C
Lift Cond Lev (LCL):     939.64 mb =   623.65 m =  2046.06 ft
Lev Free Conv (LFC):      -1.00 mb = -9999.00 m = -9999.00 ft

Wind Parameters
Mean winds (0-6000m):            297.9 at   30.2 knts
Storm direction:                 327.9 at   22.7 knts
Shear (0-3000m)              pos:    5.6 neg:    0.0 tot:    5.6 10-3/s
Storm rel Dir Shear (0-3000m):      94.6 deg
Storm rel helicity (0-3000m) pos:  217.3 neg:    0.0 tot:  217.3 m^2/s^2
                             ave:   72.4 10^-3 m/s^2 rel:   0.95
Storm rel vorticity (0-3000m) horiz:    6.6 stream:    6.3 10^-3/s
Energy-Hel index:          0.02
Bulk Rich Number:          0.17
Bulk Shear:               98.30 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
2017081812
WLD
-300 60
-102 102
42 42
27
850
temp
ml
severe
57.88
27.00
https://climate.cod.edu/data/forecast