**** Basic Overview Options ****
** DEFINITIONS **
[CPR] = Combined probability (Prob_Field_1 x Prob_Field_2 x ... x
Prob_Field_N)
[MAX] = Maximum from any member at each grid point
[MD] = Median
[MDXN] = Median value contoured. The dashed red line is the union of
all members at the lowest contour value plotted (i.e., where
at least one of the 16 members exceeds the value of the first
median contour). The dashed blue line is the intersection of
all members at the lowest contour value plotted (i.e., where
all 16 members exceed the value value of the first median
contour).
[MIN] = Minimum from any member at each grid point
[MN] = Mean
[MNSD] = Mean and Standard Deviation
[PM] = Probability Matched Mean Value
[PR] = Probability (percentage of members meeting/exceeding some
condition)
[SP] = Spaghetti
** SPECIFIC INFORMATION ON AVAILABLE FIELDS **
[MNSD]:500MB_Hght ->Mean and standard deviation of 500 mb height
[MN]:500MB_Abs.Vort(AGEO)~Hght ->Mean of 500 mb height and absolute
vorticity
[MN]:500MB_Hght~Wnd~Tmp~Isotach ->Mean of 500 mb height, temperature,
and winds
[MN]:700-500_VV~QPF ->Mean 700-500 layer ave UVV and 3-hr
precip
[MN]:850MB_Hght~Wnd~Tmp~Isotach ->Mean of 850 mb height, temperature,
and winds
[MN]:PMSL_Thck(1000-500)~10mWnd ->Mean of sea level pres, 1000-500 mb
thickness, and 10 meter winds
[SP]:PMSL_Low_Centers ->Spaghetti of sea level pressure low centers
**All SREF information presented herein is for guidance purposes
only and should not be confused with official SPC operational
forecasts. Links to official SPC operational products are found
at the bottom of every menu.
Many of the SREF products were developed for testing the utility
of SREF analysis in the prediction of SPC mission critical items,
including: thunderstorms and severe thunderstorms, large scale
critical fire weather conditions, and mesoscale areas of hazardous
winter weather. In order to accomplish this goal and test new and
unqiue methods of SREF application in an operational environment,
many fields not produced in the NCEP postprocessor were calculated
locally for SPC purposes.
**

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