IEM :: VTEC Yearly Event Counts

This page presents the number of VTEC events issued by either all of the NWS or a selected WFO. These numbers are based on the IEM maintained archive and are not official. Please be careful of the presentation of zeros, as some VTEC products were only recently added and don't go back prior to 2005. The IEM retrospectively assigned VTEC events to some warnings prior to implementation in fall 2005. Note: the numbers shown are the unique combinations of VTEC event ids and WFO, so a single tornado watch event issued by four WFOs would count as four in this summary, when summarizing all WFOs!

Hopefully, you can copy/paste this table into your favorite spreadsheet program for further analysis...

Option 1: All VTEC Events by Year

Limit Numbers by WFO:

Option 2: Count of One VTEC Phenomena and Significance by WFO

Data for only BOX shown

P	S	Phenomena	Significance	1986	1987	1988	1989	1990	1991	1992	1993	1994	1995	1996	1997	1998	1999	2000	2001	2002	2003	2004	2005	2006	2007	2008	2009	2010	2011	2012	2013	2014	2015	2016	2017	2018	2019	2020	2021	2022	2023	2024	2025
AS	Y	Air Stagnation	Advisory	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	1	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
BH	S	Beach Hazard	Statement	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	1	0	0
BS	Y	Blowing Snow	Advisory	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	1	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
BZ	A	Blizzard	Watch	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	1	0	0	1	0	0	0	1	4	2	0	2	0	0	0	0	0	0	0	0
BZ	W	Blizzard	Warning	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	1	1	0	1	1	1	0	1	4	2	2	3	2	0	0	0	1	0	0	0
CF	A	Coastal Flood	Watch	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	6	0	3	7	2	2	2	3	2	4	4	4	2	1	1	2	3	6	0
CF	S	Coastal Flood	Statement	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	3	4	1	6	9	8	6	7	8	1	17	16	14	8	15	14	12	14	20	3
CF	W	Coastal Flood	Warning	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	1	6	1	2	8	2	4	2	3	3	2	3	7	2	1	2	3	3	4	0
CF	Y	Coastal Flood	Advisory	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	1	7	10	24	7	15	8	18	14	16	16	24	13	15	12	9	15	13	2
CW	Y	Cold Weather	Advisory	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	3
EH	A	Excessive Heat	Watch	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	2	0	1	0	0	1	0	1	0	0	0	0	2	1	1	1	0	0	2	0
EH	W	Excessive Heat	Warning	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	1	0	1	0	0	1	0	2	0	0	3	0	2	1	1	1	0	0	0	0
FA	A	Flood	Watch	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	8	7	10	4	5	10	3	7	9	3	0	3	8	5	1	2	2	16	8	3
FA	W	Flood	Warning	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	24	5	31	26	3	30	33	29	18	33	53	39	25	40	9	38	15	2
FA	Y	Flood	Advisory	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	109	112	62	113	92	119	140	27	39	59	95	8	0	0	0	0	0	0
FF	A	Flash Flood	Watch	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	4	1	6	5	4	1	4	11	9	7	1	9	12	5	2	7	0	0	0	0
FF	W	Flash Flood	Warning	0	0	0	12	12	6	15	12	0	11	41	5	61	24	0	4	0	23	5	23	11	6	16	22	2	13	25	61	48	12	8	32	36	12	16	38	10	73	21	5
FG	Y	Dense Fog	Advisory	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	7	9	16	9	9	7	16	13	24	12	26	8	33	38	20	25	12	20	18	10	4
FL	A	Flood	Watch	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	1	6	0	0	5	0	0	1	0	0	5	1	11	0	0	0	0	8	3
FL	W	Flood	Warning	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	56	4	82	65	0	13	24	4	6	19	52	32	17	28	3	74	70	15
FR	Y	Frost	Advisory	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	2	5	8	11	10	12	4	8	15	8	8	13	6	2	7	10	1	8	4	3	1
FW	A	Red Flag	Watch	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	6	11	4	6	3	0	10	3	0	4	3	0	0	1	2	0	0	3	0	0
FW	W	Red Flag	Warning	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	7	9	4	7	4	1	10	3	1	6	3	0	0	1	2	3	0	5	9	0
FZ	A	Freeze	Watch	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	2	3	0	0	1	5	1	1	4	3	1	2	0	1	1	2	1	2	0
FZ	W	Freeze	Warning	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	1	5	7	8	6	7	3	6	5	5	6	6	2	3	0	4	2	2	1	2	0
GL	A	Gale	Watch	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	22	40	33	29	17	27	25	30	38	31	42	32	34	29	29	25	23	13
GL	W	Gale	Warning	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	26	49	47	48	30	43	36	44	55	52	60	57	55	41	49	37	36	25
HF	A	Hurricane Force Wind	Watch	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	1	1	0	1	0	0	1	0	0	0	0	0	0	0
HF	W	Hurricane Force Wind	Warning	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	1	1	1	2	0	1	2	0	0	0	0	0	0	0
HS	W	Heavy Snow	Warning	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	1	3	4	2	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
HT	Y	Heat	Advisory	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	4	3	4	1	4	3	5	11	0	2	5	2	13	5	4	11	5	2	6	3
HU	A	Hurricane	Watch	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	2	1	0	0	0	0	0	0	0	0	0	1	0	0	0	0
HU	S	Hurricane	Statement	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	1	0	0	0	0	0	1	0	0	0	0	0	0	0	0	0	0	0
HU	W	Hurricane	Warning	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	2	1	0	0	1	0	0	0	0	0	0	1	0	0	0	0
HW	A	High Wind	Watch	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	5	7	8	8	6	8	4	7	5	5	2	7	6	11	6	7	2	6	3	6	1
HW	W	High Wind	Warning	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	1	6	5	10	6	10	6	7	7	5	2	8	11	16	10	11	4	5	4	5	2
IS	W	Ice Storm	Warning	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	4	2	0	0	0	0	0	0	0	0	0	0	1	0	0	0	0	0	0
MA	S	Marine	Statement	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	5	21	31	9	4	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
MA	W	Marine	Warning	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	93	74	65	36	51	79	148	76	103	112	95	70	73	84	93	56	111	120	130	117	73	98	63	11
MF	Y	Marine Dense Fog	Advisory	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	3	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
RP	S	Rip Currents	Statement	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	3	0	4	4	2	1	0	1	7	3	10	8	11	11	3
SC	Y	Small Craft	Advisory	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	55	136	116	132	108	137	146	165	157	153	176	179	150	126	127	125	115	78
SI	Y	Small Craft for Winds	Advisory	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	2	0	0	0	0	2	0	0	0	0	1	0	0	0	0	0	0	0
SN	Y	Snow	Advisory	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	6	4	5	7	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
SQ	W	Snow Squall	Warning	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	12	0	0	3	0	16	2
SR	A	Storm	Watch	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	2	2	3	5	5	4	5	3	4	5	6	6	5	2	5	4	7	1
SR	W	Storm	Warning	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	4	3	6	5	8	6	7	3	8	15	14	8	9	4	6	4	5	1
SS	A	Storm Surge	Watch	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	1	0	1	0	0
SS	W	Storm Surge	Warning	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	1	0	0	0	0
SU	Y	High Surf	Advisory	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	8	5	13	8	6	2	5	2	3	2	2	9	4	2	11	3	5	5	7	0
SV	A	Severe Thunderstorm	Watch	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	14	13	13	6	11	9	11	9	8	6	4	6	6	9	7	11	7	6	9	3
SV	W	Severe Thunderstorm	Warning	26	7	25	40	19	41	42	65	78	98	54	78	88	84	77	71	28	32	51	80	118	150	287	114	134	122	119	91	120	91	127	80	91	120	152	131	63	92	109	38
SW	Y	Small Craft for Hazardous Seas	Advisory	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	19	51	48	63	45	29	27	14	24	19	4	0	0	0	0	0	0	0
TI	A	Inland Tropical Storm	Watch	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	1	0	1	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
TI	W	Inland Tropical Storm	Warning	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	1	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
TO	A	Tornado	Watch	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	1	1	1	2	3	2	0	0	1	1	0	1	0	4	1	0	1	2	0
TO	W	Tornado	Warning	7	0	0	0	1	0	4	2	0	6	2	17	7	2	5	0	0	0	1	0	1	4	3	2	6	12	5	12	8	10	2	0	16	13	8	23	2	17	4	0
TR	A	Tropical Storm	Watch	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	2	1	2	1	0	0	0	0	1	1	0	1	1	1	0	1	0	0
TR	W	Tropical Storm	Warning	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	1	2	2	1	0	0	1	0	1	1	0	1	1	2	0	1	0	0
UP	A	Freezing Spray	Watch	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	1	0	1	0	0	0	2	1	0	2	0	0	0	0	1	0	1
UP	W	Freezing Spray	Warning	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	1	0	0	1	5	1	0	4	2	0	1	0	1	0	0
UP	Y	Freezing Spray	Advisory	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	1	0	0	0	0	4	11	12	5	10	8	8	1	7	7	2	0	5
WC	A	Wind Chill	Watch	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	1	0	0	0	1	0	0	0	1	2	0	1	0	0	0	1	1	0	0
WC	W	Wind Chill	Warning	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	1	0	0	0	3	1	2	1	2	0	0	1	1	0	0
WC	Y	Wind Chill	Advisory	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	3	5	2	3	2	1	0	3	9	9	2	5	4	6	0	3	4	1	1	0
WI	Y	Wind	Advisory	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	17	33	29	38	37	39	28	18	22	22	18	31	30	37	27	33	20	22	16	22	12
WS	A	Winter Storm	Watch	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	3	3	13	15	10	6	8	4	8	11	10	6	9	9	7	4	7	9	5	4	3
WS	W	Winter Storm	Warning	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	3	3	9	13	9	7	11	5	10	9	9	7	8	9	8	5	5	8	4	4	3
WW	Y	Winter Weather	Advisory	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	2	5	21	20	23	17	28	19	21	25	24	20	24	31	29	15	20	20	15	15	11
XH	A	Extreme Heat	Watch	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	1
XH	W	Extreme Heat	Warning	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	1
ZR	Y	Freezing Rain	Advisory	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	3	3	2	2	1	0	3	7	5	7	4	3	0	0	0	0	0	0	0	0