Maximum Estimated Size of Hail (MESH) - Maximum Estimated Size of Hail (MESH) - Warning Decision Training Division (WDTD)
Maximum Estimated Size of Hail (MESH)
Estimate of the maximum hail size that can be expected.
NWS: WFO, CWSU, AWC, SPC
Spatial Resolution: 0.01o Latitude (~1.11 km) x 0.01o Longitude (~1.01 km at 25oN and 0.73 km at 49oN)
Temporal Resolution: 2 minutes
MESH is calculated by:
where SHI is the “Severe Hail Index."
Latest Update: MRMS Version 10
Witt, A., M. D. Eilts, G. J. Stumpf, J. T. Johnson, E. D. Mitchell, and K. W. Thomas, 1998: An enhanced hail detection algorithm for the WSR-88D. Wea. Forecasting, 13, 286-303.