CURRENT NC WATCHES, WARNINGS, & ADVISORIES
Radar
![](http://www.spc.ncep.noaa.gov/exper/mesoanalysis/s17/rgnlrad/rgnlrad.gif)
Surface Obs
![](http://www.spc.ncep.noaa.gov/exper/mesoanalysis/s17/bigsfc/bigsfc.gif)
Visible
![](http://www.spc.ncep.noaa.gov/exper/mesoanalysis/s17/1kmv/1kmv.gif)
Surface temp, dewpoint, and MSLP
![](http://www.spc.ncep.noaa.gov/exper/mesoanalysis/s17/ttd/ttd_sf.gif)
925 mb
![](http://www.spc.ncep.noaa.gov/exper/mesoanalysis/s17/925mb/925mb.gif)
850 mb
![](http://www.spc.ncep.noaa.gov/exper/mesoanalysis/s17/850mb/850mb.gif)
500 mb / vorticity advection
![](http://www.spc.ncep.noaa.gov/exper/mesoanalysis/s17/vadv/vadv.gif)
300 mb
![](http://www.spc.ncep.noaa.gov/exper/mesoanalysis/s17/300mb/300mb.gif)
Mid level lapse rate
![](http://www.spc.ncep.noaa.gov/exper/mesoanalysis/s17/laps/laps.gif)
Low level lapse rate
![](http://www.spc.ncep.noaa.gov/exper/mesoanalysis/s17/lllr/lllr.gif)
0-6 km shear
![](http://www.spc.ncep.noaa.gov/exper/mesoanalysis/s17/shr6/shr6.gif)
Effective shear
![](http://www.spc.ncep.noaa.gov/exper/mesoanalysis/s17/eshr/eshr.gif)
Most-unstable CAPE
![](http://www.spc.ncep.noaa.gov/exper/mesoanalysis/s17/mucp/mucp.gif)
Mixed layer (100 mb) CAPE and CIN
![](http://www.spc.ncep.noaa.gov/exper/mesoanalysis/s17/mlcp/mlcp.gif)
0-1 km shear
![](http://www.spc.ncep.noaa.gov/exper/mesoanalysis/s17/shr1/shr1.gif)
0-1 km SRH
![](http://www.spc.ncep.noaa.gov/exper/mesoanalysis/s17/srh1/srh1.gif)
Hail Parameters: -10 to -30C CAPE
Greater CAPE in this layer indicates a "fat" CAPE and potentially vigorous updrafts.
![](http://www.spc.ncep.noaa.gov/exper/mesoanalysis/s17/hail/hail.gif)
Supercell Composite Parameter
Depends on MUCAPE, SRH, and shear. Higher values favor right-moving supercells.
![](http://www.spc.ncep.noaa.gov/exper/mesoanalysis/s17/scp/scp.gif)
Vorticity Generation Parameter
Values greater than 0.2 m/s**2 suggest an increasing possibility of tornadic storms.
![](http://www.spc.ncep.noaa.gov/exper/mesoanalysis/s17/vgp3/vgp3.gif)
Energy Helicity Index
0-1-km EHI values greater than 1-2 have been associated with significant tornadoes in supercells.
![](http://www.spc.ncep.noaa.gov/exper/mesoanalysis/s17/ehi1/ehi1.gif)
Surface-2km SR Wind
![](http://www.spc.ncep.noaa.gov/exper/mesoanalysis/s17/llsr/llsr.gif)
0-3 km lapse rate and 0-3 km CAPE
![](http://www.spc.ncep.noaa.gov/exper/mesoanalysis/s17/lr3c/lr3c.gif)
LCL height
Significant tornadoes are more favorable with low LCLs, below 1 km.
![](http://www.spc.ncep.noaa.gov/exper/mesoanalysis/s17/lclh/lclh.gif)
Bulk Richardson Number
Incorporates MLCAPE and vertical shear. Values of 10-45 have been associated with supercells in simulations.
![](http://www.spc.ncep.noaa.gov/exper/mesoanalysis/s17/brn/brn.gif)
Moisture convergence
![](http://www.spc.ncep.noaa.gov/exper/mesoanalysis/s17/mcon/mcon.gif)
Surface theta-e advection
![](http://www.spc.ncep.noaa.gov/exper/mesoanalysis/s17/thea/thea.gif)
Significant Tornado Parameter
A majority of sig tornadoes (F2 or greater) have been associated with STP values greater than 1.
![](http://www.spc.ncep.noaa.gov/exper/mesoanalysis/s17/stor/stor.gif)
Downdraft CAPE
Large DCAPE = stronger downdrafts.
![](http://www.spc.ncep.noaa.gov/exper/mesoanalysis/s17/dcape/dcape.gif)
Comments