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: 2024-04-25T14:39:51Z

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 W 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 10 8 4 1 2 23 21 14 18 1 1 2 4 27 13 11 22 7
ABR 1 1 12 1 7 8 111 1 5 11 1 2 12
AFC 13 1 2 5 9 13 5 10 3 41
AFG 29 5 6 13 4 39 20 36 29 100
AJK 1 1 6 12 5 9 6 8 11 21 1
AKQ 6 32 7 28 3 8 10 11 28 4 1 1 1 11 12 1 1 34 12 56 1 1 5 109 50 107 9 7 4
ALY 4 1 9 1 41 4 4 1 18 1 9 9 9 20
AMA 1 5 1 16 16 1 4 4 59 8 113 3 1 1 2 7 2 2 7 4
APX 1 3 2 8 14 4 41 1 2 4 3 4 13
ARX 1 1 9 2 3 5 2 117 1 2 7 5 4 5 9
BGM 3 2 4 2 3 2 2 2 50 108 4 1 9 6 5 20
BIS 1 11 2 3 1 5 12 2 3 11
BMX 4 3 41 4 9 36 6 2 1 2 1 4 53 19 103 4 4 7 1 1 1 1
BOI 2 11 2 2 1 1 11 4 5 12
BOU 1 8 6 13 5 6 9 1 1 1 15 12 21
BOX 5 13 4 7 6 11 1 8 62 2 2 1 15 22 5 4 1 44 15 6 4 1 19 4 4 10
BRO 2 5 8 5 5 3 3 3 4 1 2 9 10 20 38 3 98 7 1 1 2 9
BTV 1 3 1 9 4 4 2 14 1 7 5 7 15
BUF 2 4 1 4 5 10 11 3 3 4 1 1 4 46 1 1 1 1 11 6 5 23
BYZ 1 7 2 3 1 3 5 8 10 21
CAE 3 11 2 4 24 6 1 1 2 16 131 29 83 5 5
CAR 1 3 4 4 4 6 3 6 11 17 1 1 4 4 32 5 4 5 2 6 5 5 15
CHS 12 13 2 5 23 12 12 1 1 16 31 6 1 41 1 1 5 13 85 4 1 2
CLE 2 4 9 1 7 28 2 2 1 6 10 1 3 1 7 6 5 38 1 108 33 123 12 1 2 9 2 2 13 1
CRP 6 1 6 3 15 7 6 7 4 5 3 4 1 3 2 3 27 15 4 42 98 34 1 3 3 11 1 1
CTP 3 3 21 4 24 4 2 2 2 2 30 108 13 1 10 5 7 14
CYS 2 7 5 11 19 20 13 111 2 1 1 16 15 24 4
DDC 1 1 16 12 15 3 4 59 10 113 1 1 4 1 7 1
DLH 2 7 1 1 7 15 2 54 3 1 2 2 4 9 4 4 5 16
DMX 1 13 1 2 6 3 2 12 118 6 1 1 4 7 2 2 9
DTX 1 1 2 8 1 2 1 1 12 15 7 4 3 47 1 1 2 121 11 1 2 1 3 2 2 1 6 1
DVN 1 1 6 10 7 3 1 2 1 3 38 81 117 19 1 1 5 6 2 4 10
EAX 1 10 9 4 5 3 125 89 116 2 1 2 3 8 2 2 5
EKA 7 11 6 1 23 2 5 9 1 8 1 2 15 27 4 5 1 1 32 51 2 19 1 4 2 18 9 9 16
EPZ 4 8 7 3 4 5 5 9 1 1 16 3 12
EWX 1 1 33 4 12 4 5 12 1 1 128 72 94 3 1 2 11 1 1
FFC 5 5 14 8 199 8 1 2 5 1 2 63 83 9 3 12 1 1 3
FGF 3 1 12 3 5 1 8 8 2 2 15
FGZ 1 1 2 5 2 12 4 4 15
FSD 2 14 8 10 3 1 2 118 11 1 3 8 3 4 10
FWD 2 6 25 13 8 44 3 132 96 110 6 2 3 2 1
GGW 12 3 4 1 1 4 6 1 8 2 4 6
GID 2 13 1 7 10 3 1 1 2 112 42 114 5 2 1 3 4 2 10
GJT 1 1 1 1 1 3 1 1 1 2 11 7 10 9 23
GLD 2 1 1 3 15 10 12 3 4 4 36 6 113 2 1 1 3 1 2 7
GRB 1 1 6 5 8 6 33 5 1 5 4 9 1
GRR 2 2 5 1 2 1 1 5 9 6 5 40 1 121 13 6 1 1 2 3 2 1 8
GSP 5 20 50 22 4 9 10 5 1 4 1 3 35 106 3 2 9 2 3 7
GUM 7 1 1 16 18 2 2 1 1 11 42 3 4 5 38 1
GYX 5 5 4 13 7 9 18 7 1 33 12 18 1 1 4 3 38 13 5 5 3 9 8 7 15
HFO 1 5 29 7 1 5 3 11 53 25 6 18 1 2 1 24 2 4
HGX 2 8 32 7 18 50 1 1 3 4 2 3 10 60 19 13 40 99 59 94 19 1 4 6 1
HNX 1 4 30 1 20 2 3 2 7 3 4 27 8 11 17
HUN 2 1 3 7 3 1 2 51 31 82 6 1 2 8 1 1 2
ICT 10 1 4 6 1 2 3 89 21 115 3 1 1 4 13 1 1 11
ILM 7 40 2 2 18 1 8 8 1 1 28 4 6 30 1 1 4 131 27 7 7 3
ILN 2 26 6 26 6 4 1 3 4 69 68 122 36 4 3 1 7
ILX 2 1 1 1 6 8 18 3 1 1 3 129 65 117 17 1 1 3 7 2 2 5
IND 1 5 27 4 3 96 3 1 1 1 1 129 61 122 10 2 5 4 4
IWX 3 3 5 2 43 2 1 1 3 6 3 3 32 1 121 36 122 6 1 2 3 2 2 2 7
JAN 4 2 40 10 94 1 2 1 2 127 115 101 14 3 5 1 1 1
JAX 2 1 4 12 9 27 9 7 7 5 10 4 4 54 7 12 37 1 1 4 95 104 40 3 7
JKL 1 15 2 1 6 3 1 2 1 18 105 8 3 3 2 8
JSJ 1 16 109 15 1 2 5 16 19 10
KEY 2 1 3 1 2 1 131 3 26 1 58 4 1
LBF 2 4 12 1 5 7 10 2 2 8 112 15 2 1 3 2 4 13
LCH 1 2 3 9 33 13 16 53 1 1 1 2 5 4 4 7 97 17 33 54 79 100 19 4 18 1
LIX 1 1 5 4 1 25 46 15 51 1 2 5 6 10 2 2 4 112 13 42 2 2 53 71 101 13 4 8 1
LKN 4 1 1 5 14 5 5 1 1 13 4 10 18
LMK 1 8 2 4 3 7 3 1 1 1 129 67 78 24 3 6 1 5
LOT 2 4 9 1 2 9 15 32 3 3 1 1 1 2 7 14 7 5 45 1 39 18 120 11 1 1 5 4 3 5 10
LOX 8 7 4 70 31 5 1 8 3 6 13 15 7 9 2 2 37 62 1 2 15 13 2 38 4 7 10
LSX 1 8 6 5 15 3 1 3 4 125 132 117 43 2 3 6 1 1 5
LUB 1 1 3 7 16 14 3 4 132 27 110 1 1 3 10 1 1 4 1
LWX 11 13 49 7 32 8 38 28 2 1 1 1 2 9 13 2 5 34 2 80 1 1 109 30 107 3 3 15 5 9 14 1
LZK 2 3 14 5 26 12 4 1 1 3 1 130 94 61 17 1 6 5 2 2 8 1
MAF 1 4 2 5 16 15 18 19 91 9 110 1 3 16 1 1 1
MEG 3 16 1 2 9 27 5 5 1 3 1 1 130 55 79 4 3 11 1 1 3 1
MFL 3 1 17 2 2 4 5 121 3 24 30 6 17 58 8 1 5
MFR 4 1 3 2 5 2 6 6 2 1 3 8 21 5 4 5 36 8 28 1 2 1 3 1 17 8 14 25 1
MHX 11 5 5 18 2 2 5 4 2 1 10 14 1 1 2 46 12 43 1 1 7 131 27 7 5 8
MKX 1 1 10 6 10 1 3 11 16 3 9 44 1 1 21 120 10 2 3 2 4 9 1
MLB 16 1 2 5 1 4 7 1 44 1 14 35 4 17 104 10 2 6
MOB 1 2 3 26 3 8 44 1 1 1 1 6 9 1 1 4 49 10 16 33 2 1 4 9 53 46 102 13 4 7 1
MPX 10 1 2 5 6 4 1 2 5 7 2 5 12
MQT 2 17 25 4 1 5 67 2 1 9 2 4 3 5 14
MRX 4 4 13 1 3 4 6 1 3 5 7 13 80 4 1 1 3 15 1 2 7
MSO 1 4 2 2 2 1 2 2 2 7 8 34 1
MTR 3 7 4 12 64 2 2 8 4 17 1 8 22 1 3 68 69 3 6 5 3 7
OAX 1 16 4 13 1 5 8 3 1 1 2 89 16 118 8 2 1 5 6 3 4 8
OHX 1 6 1 3 1 11 3 1 11 79 2 4 1 1 2
OKX 5 30 6 26 6 20 46 1 2 4 9 1 2 2 14 19 3 2 1 8 48 4 2 2 8 3 2 5
OTX 1 10 2 1 2 11 1 1 1 4 6 5 20
OUN 1 23 4 11 1 8 10 1 2 132 135 113 10 1 1 3 12 2 3 7 3
PAH 1 15 2 6 14 2 1 1 1 129 77 76 33 3 5 5
PBZ 4 26 10 14 6 18 42 7 4 2 3 1 2 10 108 55 123 7 3 10 5 6 14
PDT 1 14 1 5 1 2 1 2 17 10 7 22 7
PHI 6 9 31 6 81 19 4 88 5 1 2 2 11 17 1 3 21 9 44 39 2 3 109 6 87 1 13 2 4 7
PIH 1 4 2 2 1 1 2 3 6 6 9 19
PQR 7 2 4 15 4 5 5 1 11 24 2 3 5 2 63 3 20 2 4 1 2 1 1 4 9 8 19
PSR 1 3 1 3 5 1 11 4 5 2 4 2 19 2
PUB 2 1 4 26 28 5 8 7 2 1 5 15 12 20
RAH 2 9 4 2 19 4 1 1 3 131 55 106 7 4 1
REV 1 2 3 17 3 10 7 10 20 1
RIW 1 2 2 1 6 6 3 2 2 11 12 22
RLX 6 45 13 24 4 1 1 2 109 94 123 14 1 3 10 3 5 11
RNK 4 14 14 1 6 18 2 1 1 3 109 34 106 12 1 3 13 3 4 9
SEW 1 1 1 6 6 2 9 3 17 23 3 69 1 1 1 1 1 10 8 8 13
SGF 1 4 9 1 4 5 3 7 2 1 125 74 71 11 1 2 7 1 8
SGX 9 3 5 2 70 11 1 5 1 8 1 2 5 4 4 5 13 19 11 4 2 23 5 7 13
SHV 3 4 30 21 8 102 4 1 1 5 126 64 95 3 2 6 1 1 2
SJT 1 18 1 6 1 3 132 89 110 7 3 6 2
SLC 1 6 5 2 11 4 2 10 9 11 23
STO 1 4 6 10 5 2 2 6 1 12 9 15 13
TAE 1 2 6 3 4 21 24 12 62 1 2 1 5 8 1 3 3 4 72 5 37 35 1 1 1 8 53 80 104 49 3 9 1
TBW 2 1 2 1 2 5 2 1 2 2 1 2 1 45 4 16 21 3 20 104 10 2 3
TFX 1 7 8 1 1 2 6 7 7 2 2 9 11 13 27
TOP 8 2 2 4 1 1 1 1 124 56 115 11 2 1 2 7 2 1 7
TSA 11 2 4 1 1 2 2 2 1 1 126 80 65 13 1 4 8 2 4 8
TWC 1 1 4 4 5 1 1 4 4 6 1 4 13
UNR 1 12 4 6 2 1 111 11 1 4 13 3 2 15
VEF 1 2 2 1 1 1 4 2 1 3 18 8 8 14