| Acronyms in SPC Discussions |
This is a list of acronyms and abbreviations SPC frequently uses in our
products.
NOTE:
Weather station IDs referenced in SPC outlooks and other NWS products may
be found by state in this
List of Surface Stations by Greg Thompson of UCAR.
NOTE:
More glossary terms can be found in the
NWS Glossary page.
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ACARS
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(A)ircraft (C)ommunications (A)ddressing and (R)eporting (S)ystem
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ACCAS
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(A)lto(C)umulus (CAS)tellanus
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AMDAR
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(A)ircraft (M)eteorological (D)ata (R)elay
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AOA
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(A)t (O)r (A)bove
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AOB
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(A)t (O)r (B)elow
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ARKLAMISS
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(ARK)ansas / (L)ouisian(A) / (MISS)issippi region
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ARKLATEX
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(ARK)ansas / (L)ouisian(A) / (TEX)as region
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ARW
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A specific configuration of the (W)eather (R)esearch and (F)orecasting (WRF) model. ARW stands for (A)dvanced (R)esearch (W)RF.
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ASOS
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(A)utomated (S)urface (O)bserving (S)ystem
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ATTM
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(A)t (T)his (T)i(M)e
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AWIPS
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(A)dvanced (W)eather (I)nteractive (P)rocessing (S)ystem
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AWOS
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(A)utomated (W)eather (O)bservation (S)ystem
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BRN
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(B)ulk (R)ichardson (N)umber
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BWER
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(B)ounded (W)eak (E)cho (R)egion
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CAA
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(C)old (A)ir (A)dvection
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CAPE
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(C)onvective (A)vailable (P)otential (E)nergy
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CB
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(C)umulonim(B)us
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CIN
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(C)onvective (IN)hibition
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CONUS
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(CON)tinental (U)nited (S)tates
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CSI
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(C)onditional (S)ymmetric (I)nstability
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CU
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(CU)mulus cloud
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DCVA
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(D)ifferential (C)yclonic (V)orticity (A)dvection
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DELMARVA
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(DEL)aware / (MAR)yland / (V)irgini(A) region
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DPVA
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(D)ifferential (P)ositive (V)orticity (A)dvection (same as DCVA in Northern Hemisphere)
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ECMWF
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(E)uropean (C)entre for (M)edium-Range (W)eather (F)orecasts model
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EHI
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(E)nergy (H)elicity (I)ndex
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EL
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(E)quilibrium (L)evel
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ELY
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(E)aster(LY)
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EML
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(E)levated (M)ixed (L)ayer
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ERN
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(E)aste(RN)
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FROPA
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(FRO)ntal (PA)ssage
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FRZLVL
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(FR)ee(Z)ing (L)e(V)e(L)
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GEFS
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(G)lobal (E)nsemble (F)orecast (S)ystem
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GFS
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(G)lobal (F)orecast (S)ystem
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GOES
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(G)eostationary (O)perational (E)nvironmental (S)atellite
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HPC
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(H)ydrometeorological (P)rediction (C)enter
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HRRR
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(H)igh-(R)esolution (R)apid (R)efresh model
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INVOF
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(IN) (V)icinity (OF)
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IR
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(I)nfra(R)ed
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J/KG
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(J)oules per (K)ilo(G)ram
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LCL
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(L)ifted (C)ondensation (L)evel
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LEWP
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(L)ine (E)cho (W)ave (P)attern
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LFC
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(L)evel of (F)ree (C)onvection
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LI
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(L)ifted (I)ndex
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LLJ
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(L)ow (L)evel (J)et
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M2/S2
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M2/M2 - (M)eters squared per (S)econd squared
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MAX
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(MAX)imum
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MB
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(M)illi(B)ars
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MCC
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(M)esoscale (C)onvective (C)omplex
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MCS
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(M)esoscale (C)onvective (S)ystem
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MCV
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(M)esoscale (C)onvective (V)ortex
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MD
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(M)esoscale (D)iscussion
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MLCAPE
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(CAPE) calculated using a parcel consisting of (M)ean (L)ayer values of temperature and moisture from the lowest 100 mb above ground level
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MLCIN
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(CIN) calculated using a parcel consisting of (M)ean (L)ayer values of temperature and moisture from the lowest 100 mb above ground level
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MLLI
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(LI) calculated using a parcel consisting of (M)ean (L)ayer values of temperature and moisture from the lowest 100 mb above ground level
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MUCAPE
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(CAPE) calculated using a parcel from the pressure level that results in the (M)ost (U)nstable value
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MUCIN
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(CIN) calculated using a parcel from the pressure level that results in the (M)ost (U)nstable CAPE
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MULI
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(LI) calculated using a parcel from the pressure level that results in the (M)ost (U)nstable value
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MOS
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(M)odel (O)utput (S)tatistics
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NAM
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(N)orth (A)merican (M)odel: A regional numerical forecast model used to support multi day forecasts over North America
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NCEP
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(N)ational (C)enters for (E)nvironmental (P)rediction
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NHC
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(N)ational (H)urricane (C)enter
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NLY
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(N)orther(LY)
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NMM
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A specific configuration of the (W)eather (R)esearch and (F)orecasting (WRF) model. NMM stands for (N)onhydrostatic (M)esoscale (M)odel.
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NRN
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(N)orthe(RN)
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NSSL
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(N)ational (S)evere (S)torms (L)abratory
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NVA
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(N)egative (V)orticity (A)dvection
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NWS
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(N)ational (W)eather (S)ervice
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PV
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(P)otential (V)orticity
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PVA
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(P)ositive (V)orticity (A)dvection
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QG
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(Q)uasi-(G)eostrophic
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QLCS
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(Q)uasi-(L)inear (C)onvective (S)ystem
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RAOB
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(RA)diosonde (OB)servation
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RAP
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(RAP)id Refresh: A regional numerical forecast model refreshed frequently to support the need for near-term forecasts over the United States (RUC successor)
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SBCAPE
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(CAPE) calculated using a (S)urfaced-(B)ased parcel
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SBCIN
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(CIN) calculated using a (S)urfaced-(B)ased parcel
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SBLI
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(L)ifted (I)ndex calculated using a (S)urfaced-(B)ased parcel
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SLY
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(S)outher(LY)
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SPC
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(S)torm (P)rediction (C)enter
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SREF
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(S)hort (R)ange (E)nsemble (F)orecast system
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SRH
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(S)torm (R)elative (H)elicity
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SRN
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(S)outhe(RN)
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SSEO
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SPC (S)torm-(S)cale (E)nsemble of (O)pportunity
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SWODY1
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(S)evere (W)eather (O)utlook - (D)ay (1)
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SWODY2
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(S)evere (W)eather (O)utlook - (D)ay (2)
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SWODY3
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(S)evere (W)eather (O)utlook - (D)ay (3)
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TC
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(T)ropical (C)yclone
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TCU
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(T)owering (CU)mulus
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TD
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(T)ropical (D)epression
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TS
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(T)ropical (S)torm
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TSTM
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(T)hunder(ST)or(M)
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UKMET
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(U)nited (K)ingdom (MET)eorological Office Model
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ULJ
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(U)pper (L)evel (J)et
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UVV
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(U)pward (V)ertical (V)elocity
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VAD
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(V)elocity-(A)zimuth (D)isplay
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VIL
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(V)ertically (I)ntegrated (L)iquid
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VWP
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(V)AD (W)ind (P)rofile
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WAA
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(W)arm (A)ir (A)dvection
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WFO
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(NWS) (W)eather (F)orecast (O)ffice
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WLY
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(W)ester(LY)
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WPC
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(W)eather (P)rediction (C)enter
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WRF
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(W)eather (R)esearch and (F)orecasting Model
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WRN
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(W)este(RN)
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WW
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(W)eather (W)atch; specifically a Severe Thunderstorm or Tornado Watch
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Z
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"(Z)ulu" time, same as GMT (Greenwich Mean Time), UTC and military time. Add 6 hours to Central Standard Time or 5 hours to Central Daylight Time.
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