The National Weather Service uses a system called Valid Time Event Code (VTEC) to provide more accurate tracking of its watch, warning, and advisories. The IEM attempts to provide a high fidelity database of these products. The following table is a diagnostic providing the largest VTEC eventids (ETN) for each NWS Forecast Office, each phenomena and significance for the given year. Pro-tip: Use the search box to the upper right of the table to search for a specific WFO.

The following JSON(P) Webservice provided the data you see presented on this page
https://mesonet.agron.iastate.edu/json/vtec_max_etn.py?year=2024

Select Year:

Max VTEC ETN listing for 2024

Table generated at: 2024-03-29T07:40:05Z

phenomena BH BZ CF DS DU FA FF FG FL FR FW FZ GL HF HT HW HZ IS LE LO LS LW MA MF RP SC SE SQ SR SU SV TO UP WC WI WS WW ZF
significance S W A S W Y W Y Y A W Y A W Y A W Y Y A W A W A W A W Y A W A W W W Y A W Y Y W Y S Y A W W A W W Y A W A W A W Y A W Y Y A W Y Y
wfo
ABQ 1 8 5 3 14 12 9 11 1 1 2 4 17 13 10 19 7
ABR 1 12 1 3 4 1 5 6 1 2 11
AFC 9 1 4 7 10 5 8 3 30
AFG 20 5 4 10 4 38 15 25 21 77
AJK 1 1 6 10 4 8 6 8 11 21 1
AKQ 5 25 6 18 3 8 10 11 28 1 1 1 1 9 11 1 1 8 9 41 1 1 4 15 7 1 6 4
ALY 4 6 30 3 3 1 18 1 7 8 8 19
AMA 1 5 8 8 3 3 59 6 3 1 1 2 5 2 2 7 4
APX 1 3 5 11 31 1 1 1 2 4 12
ARX 1 9 3 2 7 2 4 4 7
BGM 2 2 4 2 3 2 2 2 50 1 7 5 5 19
BIS 1 11 1 1 5 5 2 3 11
BMX 3 3 38 4 6 28 5 1 1 2 1 4 53 12 22 1 4 6 1 1 1 1
BOI 2 11 2 1 8 4 5 11
BOU 1 7 3 7 3 4 9 1 1 14 11 18
BOX 4 6 3 4 6 9 1 1 47 13 18 4 3 37 15 4 3 1 17 3 3 9
BRO 2 5 8 4 4 3 3 3 4 1 2 5 9 13 26 3 56 7 1 1 2 6
BTV 1 2 1 6 3 3 2 14 5 4 6 13
BUF 1 2 3 4 9 9 3 3 4 1 1 4 32 1 1 1 1 7 5 5 21
BYZ 1 7 2 3 1 3 5 5 7 17
CAE 3 11 2 4 23 6 1 2 13 24 5 5 3
CAR 1 3 3 4 3 2 3 3 10 15 1 1 4 4 26 4 3 5 2 4 4 4 14
CHS 9 7 1 5 18 10 10 1 1 12 20 6 34 1 1 4 12 34 4 1 1
CLE 2 1 7 5 6 9 1 2 1 6 4 5 29 1 10 44 8 1 2 8 2 2 13 1
CRP 4 1 6 3 15 7 5 6 4 5 3 4 1 3 2 3 22 14 3 29 57 20 1 3 3 8 1 1
CTP 2 2 5 4 9 2 2 30 1 8 5 7 14
CYS 1 3 3 7 17 16 13 2 1 1 13 12 17 4
DDC 1 15 7 7 1 1 59 8 1 1 4 1 7 1
DLH 2 7 1 6 11 2 41 3 1 1 2 4 9 2 4 4 13
DMX 1 13 3 2 1 1 4 3 2 2 9
DTX 1 1 2 8 9 11 6 3 37 1 1 1 26 4 1 2 1 3 1 2 1 6 1
DVN 1 1 6 2 2 1 2 38 40 25 8 1 1 5 4 2 4 9
EAX 1 10 9 4 1 38 59 43 1 1 2 3 5 2 2 5
EKA 6 11 6 1 23 1 5 9 1 5 1 13 22 4 5 32 38 2 14 1 4 2 17 9 9 14
EPZ 4 8 6 3 2 4 6 1 1 10 3 10
EWX 1 1 26 4 12 4 4 7 1 1 57 34 2 1 2 10 1 1
FFC 4 5 12 7 196 4 1 2 3 1 2 45 34 1 3 9 1 1 3
FGF 3 12 1 1 8 5 2 2 15
FGZ 1 1 5 1 9 3 3 13
FSD 2 14 4 6 1 3 3 3 4 10
FWD 1 1 10 3 8 25 3 60 37 42 2 2 3 2 1
GGW 12 1 1 1 8 2 4 6
GID 2 13 3 6 2 36 12 2 1 3 4 2 10
GJT 1 1 1 1 3 1 11 4 10 9 21
GLD 2 1 15 5 4 1 2 4 36 4 2 1 1 3 1 2 7
GRB 1 6 3 5 6 25 5 4 3 6 1
GRR 2 2 5 3 7 5 5 31 1 26 7 4 1 1 2 1 2 1 8
GSP 5 20 48 22 4 9 10 1 1 2 1 3 19 5 2 2 8 2 3 6
GUM 6 1 12 14 2 2 1 1 9 37 3 4 5 34 1
GYX 4 3 3 9 6 6 14 5 1 20 11 16 1 1 4 3 32 13 4 4 3 7 7 6 14
HFO 1 3 24 5 1 4 3 8 37 17 6 17 1 1 17 2 2
HGX 1 8 24 7 18 40 1 1 3 4 2 3 8 52 19 10 33 57 48 18 18 1 4 6 1
HNX 1 4 28 1 20 2 3 2 6 1 4 21 8 11 15
HUN 2 1 3 7 1 1 2 51 27 3 1 2 7 1 1 2
ICT 10 3 3 1 1 1 59 13 2 1 1 4 7 1 1 11
ILM 29 1 2 17 1 6 7 1 1 17 4 24 1 1 3 15 7 7 3
ILN 5 6 1 41 27 49 23 4 2 1 7
ILX 3 6 11 1 1 40 40 43 13 1 1 3 4 2 2 5
IND 1 11 3 3 23 1 1 41 46 44 8 2 5 3 4
IWX 1 5 11 2 5 2 3 26 1 41 22 44 6 1 2 3 1 2 2 7
JAN 3 1 27 9 64 2 1 2 53 75 62 10 3 4 1 1 1
JAX 2 1 1 5 8 19 9 7 7 5 9 4 4 41 7 10 32 1 1 4 74 34 33 3 5
JKL 9 2 1 6 1 7 49 3 3 2 8
JSJ 1 3 41 3 1 1 5 13 16 8
KEY 2 1 3 1 2 1 126 3 21 1 58 4 1
LBF 2 4 12 1 5 5 8 8 2 1 3 2 4 11
LCH 1 1 2 8 24 12 10 28 1 1 1 2 5 4 4 6 87 16 28 54 57 61 8 4 14 1
LIX 1 1 4 3 1 23 29 15 36 2 5 5 9 2 2 4 102 13 37 2 2 53 54 62 6 4 6 1
LKN 4 1 1 3 3 1 10 4 8 16
LMK 6 1 4 1 2 1 41 31 49 9 3 6 1 5
LOT 1 4 6 1 2 9 2 16 3 1 1 5 13 3 5 36 1 39 16 25 11 1 1 5 2 3 5 9
LOX 7 7 4 56 26 4 1 6 3 5 10 13 7 8 2 2 19 46 1 2 13 10 1 31 4 5 8
LSX 5 2 4 7 1 3 1 40 65 43 16 2 3 4 1 1 5
LUB 1 1 1 7 10 8 2 3 31 6 1 1 3 8 1 1 4 1
LWX 8 7 33 6 22 8 29 20 1 1 8 12 2 5 4 2 65 1 1 3 13 5 8 13 1
LZK 1 3 12 5 23 11 2 1 1 3 1 78 61 15 1 6 4 2 2 8 1
MAF 1 2 5 8 8 13 15 31 2 1 3 11 1 1 1
MEG 2 11 1 1 8 20 5 3 1 3 1 1 29 47 2 3 5 1 1 3 1
MFL 2 1 17 2 2 4 5 114 3 20 25 5 17 58 8 1 3
MFR 4 1 3 2 5 2 6 6 1 2 8 17 5 4 5 27 7 24 1 2 1 3 17 8 13 23 1
MHX 5 5 15 2 2 4 4 1 1 8 13 1 1 2 32 9 31 1 1 6 18 7 4 7
MKX 1 1 10 8 12 3 9 34 1 1 12 25 7 2 3 2 3 6 1
MLB 11 1 2 5 1 4 6 1 34 1 11 29 4 14 8 9 2 4
MOB 1 1 2 20 2 8 32 1 1 1 5 8 1 1 4 38 9 14 28 2 1 3 7 53 33 33 10 4 6 1
MPX 10 1 2 3 1 2 5 3 2 5 11
MQT 1 13 20 3 5 55 1 9 2 2 2 4 13
MRX 4 4 12 1 3 4 2 1 1 4 6 10 1 1 3 13 1 2 6
MSO 1 4 2 2 1 2 2 2 7 8 30 1
MTR 3 7 4 12 56 2 2 8 4 16 1 8 16 1 2 59 46 3 6 2 3 7
OAX 1 7 13 2 5 2 36 2 1 5 3 3 4 8
OHX 1 5 1 3 1 11 1 1 6 28 2 4 1 1 2
OKX 3 24 5 20 5 20 43 1 2 3 9 12 15 2 1 1 7 40 4 2 1 6 3 2 5
OTX 1 10 1 2 11 1 1 1 3 6 5 19
OUN 1 14 3 10 1 6 6 1 2 59 84 42 9 1 1 3 9 2 3 7 3
PAH 1 13 2 4 6 1 1 41 27 47 5 3 5 5
PBZ 2 6 4 5 2 4 3 1 2 10 12 48 3 8 4 5 13
PDT 1 14 1 1 2 1 2 14 9 6 19 7
PHI 5 5 21 5 65 18 4 67 1 9 14 1 2 3 7 34 39 2 2 10 2 4 7
PIH 1 4 1 1 2 3 3 6 9 16
PQR 7 2 4 14 4 5 11 24 2 3 5 1 41 3 20 2 4 1 2 1 1 4 9 8 18
PSR 1 3 1 1 4 11 4 5 2 4 2 10 2
PUB 2 1 3 11 11 3 6 7 2 1 5 13 11 17
RAH 2 8 4 2 19 1 1 1 2 31 7 5 4 1
REV 1 2 3 15 3 8 7 9 18 1
RIW 1 2 4 4 3 2 2 8 9 19
RLX 4 26 1 1 1 1 2 50 14 48 1 1 3 8 2 4 11
RNK 4 14 3 1 5 18 1 1 3 10 7 3 1 3 11 2 3 8
SEW 1 1 1 6 6 2 9 15 18 3 54 1 1 1 1 1 10 8 8 12
SGF 1 2 8 1 4 5 6 1 1 40 44 43 2 1 2 6 1 8
SGX 6 3 5 2 59 10 4 1 8 1 2 4 4 4 4 7 14 9 4 2 17 5 5 10
SHV 1 2 22 7 8 62 2 1 1 5 17 42 61 2 2 4 1 1 2
SJT 4 6 1 1 59 42 6 3 5 2
SLC 6 4 2 11 4 2 8 9 10 20
STO 1 4 6 10 5 2 2 6 1 11 9 15 12
TAE 1 1 5 2 20 13 9 37 1 2 1 4 7 1 2 3 4 59 5 29 30 1 1 1 7 53 61 34 40 3 7 1
TBW 1 1 1 2 5 1 1 2 2 1 1 1 35 4 13 18 2 13 14 6 2 1
TFX 1 7 7 2 4 5 7 2 9 8 10 21
TOP 8 2 4 1 1 38 24 37 8 2 1 2 3 2 1 7
TSA 6 2 4 1 2 2 2 1 1 46 53 43 7 1 4 6 2 4 8
TWC 1 1 4 4 5 1 3 3 4 1 3 12
UNR 1 11 4 6 1 1 4 9 1 1 13
VEF 1 2 2 1 1 1 3 1 1 1 14 8 7 12