TwisterData.com | NAM SURFACE EHI1 Forecast

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ALERT: No maps available for NAM run 13 UTC Sun 04 Dec 2022. Defaulting to 18 UTC Sun 06 Jul 2025.

Valid: 18 UTC Sun 06 Jul 2025

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ERROR: Parameter EHI1 unavailable for NAM forecast hour 00.

NAM Forecast Hour [18Z +00]

Days 1-2
00 03 06 09 12 15 18 21
24 27 30 33 36 39 42 45
Days 3-4
48 51 54 57 60 63 66 69
72 75 78 81 84

Wind and Height
Temperature
Moisture
- Dewpoint
- 850 mb Dewpoint, Wind, Height
- 925 mb Dewpoint, Wind, Height
- Surface Dewpoint, Wind, MSLP
- Mixing Ratio
- 850 mb Mixing Ratio, Wind
- 925 mb Mixing Ratio, Wind
- Surface Mixing Ratio, Wind
- Relative Humidity
- 200 mb RH, Wind
- 250 mb RH, Wind
- 300 mb RH, Wind
- 500 mb RH, Wind
- 700 mb RH, Wind
- 850 mb RH, Wind
- 925 mb RH, Wind
- Surface RH, Wind
- Miscellaneous
- Precipitable Water, MSLP
Vorticity and Vert. Vel.
- Relative Vorticity
- 250 mb Relative Vorticity
- 500 mb Relative Vorticity
- 700 mb Relative Vorticity
- 850 mb Relative Vorticity
- 1000 mb Relative Vorticity
- Vertical Velocity
- 250 mb Vertical Velocity
- 500 mb Vertical Velocity
- 700 mb Vertical Velocity
- 850 mb Vertical Velocity
- 925 mb Vertical Velocity
Precipitation
- Precipitation
- Not available at analysis time
- Simulated Radar
- Composite Reflectivity
Instability
- CAPE
- CAPE (Max, 0-70mb AGL)
- CAPE (30mb Avg, 0-180mb AGL)
- CAPE (Mean, 0-90mb AGL)
- CIN
- CIN (Max, 0-70mb AGL)
- CIN (30mb Avg, 0-180mb AGL)
- CIN (Mean, 0-90mb AGL)
- EHI
- EHI (0-1km)
- EHI (0-3km)
- Miscellaneous
- MLLCL Height
- Surface LCL Height
- Lifted Index, MSLP
Shear
- Helicity
- Helicity (0-1km)
- Helicity (0-3km)
- Bulk Shear
- Sfc-500 mb Bulk Shear
- Sfc-700 mb Bulk Shear
- Sfc-850 mb Bulk Shear
- Sfc-925 mb Bulk Shear
- Crossover
- Sfc-500 mb Crossover
- 850-500 mb Crossover
- 850-700 mb Crossover
Storm Motion
- Storm Motion
- Storm Motion
- Storm-relative flow
- 300 mb Storm-relative Wind
- 500 mb Storm-relative Wind
- 700 mb Storm-relative Wind
- 850 mb Storm-relative Wind
- 925 mb Storm-relative Wind
- 10 m Storm-relative Inflow
Winter
- Column Max Temp
- Sfc-500 mb Max Temperature
- Thickness
- 1000-500 mb Thickness, MSLP
- 1000-700 mb Thickness, MSLP
- 1000-850 mb Thickness, MSLP
- Snow
- Snow Depth

Days 1-2
00	03	06	09	12	15	18	21
24	27	30	33	36	39	42	45
Days 3-4
48	51	54	57	60	63	66	69
72	75	78	81	84