Weather Acronyms: S's

S	South or southern latitude
SA	Surface observation or Sand
SACSMA	Sacramento Soil Moisture Accounting Model
SAO	Surface observation
SAOS	Surface observations
SAP	As soon as possible
SARPS	Standards and Recommended Practices (ICAO)
SASK	Saskatchewan
SAT	Saturday
SATFY	Satisfactory
SAW	Preliminary Notification of Forthcoming Watch
SAWRS	Supplementary Aviation Weather Reporting Station
SB	Southbound
SBCAPE	CAPE calculated using a Surface based parcel
SBLI	Lifted Index (LI) calculated using surfaced based parcel
SBND	South bound
SBSD	Subside
SBSDD	Subsided
SBSDNC	Subsidence
SBSDS	Subsides
Sc	Stratocumulus
SC	South Carolina or Stratocumulus
SCA	Small Craft Advisory
SCC	Tropical Storm Summary
SCND	Second
SCNDRY	Secondary
SCS	Spectrum Width Cross Section or Soil Conservation Service
SCSL	Standing lenticular stratocumulus
SCT	Scattered
SCTD	Scattered
SCTR	Sector
SD	Storm Data or South Dakota
SDF	Second-Day Feet
SDM	Senior Duty Meteorologist or Station Duty Manual
SE	Southeast
SEB	South-eastbound
SEC	Second, or seconds
SEL	Severe Thunderstorm Watch, Tornado Watch
SEL	Watch Cancellation
SELS	SEvere Local Storms Unit
SELY	Southeasterly
SEP	September
SEPN	Separation
SEQ	Sequence
SERN	Southeastern
SEV	Severe (used e.g. to qualify icing and turbulence reports)
SEWD	Southeastward
SFC	Surface
SFD	State Forecast Discussion
SFERICS	Atmospherics
SFP	State Forecast Product
SG	Snow Grains
SGFNT	Significant
SGFNTLY	Significantly
SH...	Shower (followed by RA = rain, SN = snow, PE = ice pellets)
SHARP	Skew-T Hodograph Analysis and Research Program
SHARS	Subtle Heavy Rainfall Signature
SHEF	Standard Hydrologic Exchange Format
SHEFPARS	A software decoder for SHEF Data.
SHFT	Shift
SHFTD	Shifted
SHFTG	Shifting
SHFTS	Shifts
SHLD	Shield
SHLW	Shallow
SHRT	Short
SHRTLY	Shortly
SHRTWV	Shortwave
SHRTWVS	Shortwaves
SHSN	Snow Shower
SHUD	Should
SHWR	Shower
SHWRS	Showers
SIERNEV	Sierra Nevada
SIG	Signature
SIGMET	SIGnificant METeorlogical Information
SIGWX	Significant weather
SIMUL	Simultaneous or simultaneously
SKC	Sky clear
SKED	Schedule or scheduled
SLD	Solid
SLGT	Slight
SLGTLY	Slightly
SLO	Slow
SLOLY	Slowly
SLOR	Slower
SLP	Slope
SLPG	Sloping
SLS	Watch Redefining Statement
SLT	Sleet
SLW	Slow
SLY	Southerly
SM	Statute mile
SMA	Soil Moisture Accounting Model or Subtropical Forecast/Advisory
SMK	Smoke
SML	Small
SMLR	Smaller
SMPDBK	The Simplified Dam Break (DAMBRK) Model
SMRY	Summary
SMS	Synchronous Meteorological Satellite
SMTH	Smooth
SMTHR	Smoother
SMTHST	Smoothest
SMTM	Sometime
SMW	Special Marine Warning
SMWHT	Somewhat
SN	Snow
SNBNK	Snow bank
SND	Sand
SNFLK	Snow flake
SNGL	Single
SNOINCR	Snow increase
SNOINCRG	Snow increasing
SNOTEL	SNOw TELemetry
SNR	Signal-to-Noise Ratio
SNST	Sunset
SNW	Snow
SNWFL	Snowfall
SO	Southern Oscillation
SOO	Scientific & Operations Officer
SOLAS	Safety of Life at Sea Convention
SOP	Standard operating procedure
SP	Snow pellets
SPA	Subtropical Cyclone Public Advisory
SPC	Storm Prediction Center
SPCLY	Especially
SPD	Speed
SPDS	Speeds
SPECI	Aviation selected special weather report (in aeronautical meteorological code)
SPECIAL	Special meteorological report (in abbreviated plain language)
SPENES	Satellite precipitation estimate statement
SPF	Probability of Tropical Cyclone Conditions
SPKL	Sprinkle
SPKLS	Sprinkles
SPLNS	Southern Plains
SPOT	Spot wind
SPRD	Spread
SPRDG	Spreading
SPRDS	Spreads
SPRL	Spiral
SPS	Severe Weather Potential Statement or Special Weather Statement
SQ	Squall
SQAL	Squall
SQLN	Squall line
SQSN	Snow Squalls
SR	Sunrise
SRH	Storm-relative Helicity.
SRM	Storm Relative Mean Radial Velocity Map
SRN	Southern
SRND	Surround
SRNDD	Surrounded
SRNDG	Surrounding
SRNDS	Surrounds
SRR	Storm Relative Mean Radial Velocity Region
SRY	Secondary
SS	Sandstorm or sunset
SSE	South-southeast
SSELY	South-southeasterly
SSERN	South-southeastern
SSEWD	South-southeastward
SSHP	Site Specific Hydrologic Prediction System
SST	sea surface temperature
SSW	South southwest
SSWLY	South-southwesterly
SSWRN	South-southwestern
SSWWD	South-southwestward
St or ST	Stratus
STAGN	Stagnation
STBL	Stable
STBLTY	Stability
STD	Standard
STDY	Steady
STF	Stratiform
STFR	Stratus fractus
STFRM	Stratiform
STG	Strong
STGLY	Strongly
STGR	Stronger
STGST	Strongest
STI	Storm Tracking Information
STLT	Satellite
STM	Storm
STMS	Storms
STN	Station
STN	Station
STNR	Stationary
STNRY	Stationary
STNS	Stations
STP	Storm Total Precipitation
SUB	Substitute
SUBTRPCL	Subtropical
SUF	Sufficient
SUFLY	Sufficiently
SUG	Suggest
SUGG	Suggesting
SUGS	Suggests
SUN	Sunday
SUP	Supply
SUPG	Supplying
SUPR	Superior
SUPS	Supplies
SUPSD	Supersede
SUPSDG	Superseding
SUPSDS	Supersedes
SVG	Serving
SVR	Severe Thunderstorm Warning or Severe
SVRL	Several
SW	Southwest or Spectrum Width
SWA	Severe Weather Analysis (SWA)
SWB	South-westbound
SWD	Southward
SWE	Snow Water Equivalent
SWEAT Index	Severe WEAther Threat Index
SWI	Showalter Index
SWLG	Swelling
SWLY	Southwesterly
SWO	SPC Mesoscale Discussions or Convective Outlook
SWODY1	Day 1 Convective Outlook
SWODY2	Day 2 Convective Outlook
SWOMCD	SELS Mesoscale Discussion
SWP	Severe Weather Probability
SWPC	Space Weather Prediction Center
SWR	State Weather Roundup
SWRN	Southwestern
SWS	Severe Weather Statement
SWWD	Southwestward
SX	Stability index
SXN	Section
SXNS	Sections
SYNOP	Synoptic
SYNS	Synopsis
SYS	System