Alert archive / New Jersey / Passaic County

Weather alerts in Passaic County, New Jersey, 2009

161 weather alerts in 2009, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.

Passaic County and its neighbors

Each county as a circle sized by its count in 2009. Tap one for its archive.

Alerts: 161
Warnings: 39
Watches: 27
Advisories: 51
Busiest month: July46 alerts
Busiest day: July 29, 200912 alerts

Over time

By month

Warning verification

How often warnings here had a storm report inside them, and how much warning the reports had.

Passaic County, 2009

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
Tornado warnings	0			0
Severe thunderstorm warnings	17	12	29%	4	50%	42 min
Flash flood warnings	6	5	17%	10	50%	27 min

Each office's whole area, 2009

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
NWS New York, NY: tornado warnings	12	1	92%	3	33%	7 min
NWS New York, NY: severe thunderstorm warnings	119	61	49%	154	85%	25 min
NWS New York, NY: flash flood warnings	45	27	40%	84	80%	41 min

An office's figures cover every county it serves, including across state lines.

Verified by the Iowa Environmental Mesonet's Cow, which matches each storm-based warning with the local storm reports inside its polygon while it was in force, within 15 km of its edge: a tornado warning counts as verified on a tornado report, a severe thunderstorm warning on hail of 1 inch or more, a gust of 58 mph or more, or wind damage, a flash flood warning on a flash flood report. The false alarm ratio is the share of warnings with no such report; "inside a warning" is the probability of detection, the share of reports that fell inside one; lead time runs from the warning's issue to each report inside it, counting zero for a report that came first. A warning with no report is not proof nothing happened: reports come from spotters, the public and damage surveys, and are thin where few people live.

The alerts

Every alert, in the order issued. Times are local, Eastern Time. Each opens its own page with the text, the map, the radar and the sounding.

Issued	Product	Office	Lasted
Jan 5, 3:27 PM EST	Winter Storm Watch	OKX	13 hr
Jan 6, 4:15 AM EST	Winter Storm Warning	OKX	18 hr
Jan 6, 4:15 AM EST	Winter Weather Advisory	OKX	19 hr
Jan 6, 10:29 PM EST	Ice Storm Warning	OKX	20 hr
Jan 6, 11:22 PM EST	Freezing Rain Advisory	OKX	13 hr
Jan 7, 12:10 AM EST	Mesoscale Discussion	SPC	4 hr
Jan 7, 6:08 AM EST	Mesoscale Discussion	SPC	3 hr
Jan 7, 9:23 AM EST	Areal Flood Advisory	OKX	112 min
Jan 9, 3:51 AM EST	Winter Storm Watch	OKX	11 hr
Jan 9, 3:12 PM EST	Winter Storm Warning	OKX	33 hr
Jan 9, 3:12 PM EST	Winter Weather Advisory	OKX	42 hr
Jan 10, 7:58 PM EST	Mesoscale Discussion	SPC	4 hr
Jan 14, 3:07 PM EST	Winter Weather Advisory	OKX	25 hr
Jan 17, 4:08 PM EST	Winter Weather Advisory	OKX	23 hr
Jan 26, 4:04 PM EST	Winter Storm Watch	OKX	23 hr
Jan 27, 4:13 AM EST	Winter Weather Advisory	OKX	36 hr
Jan 27, 2:34 PM EST	Winter Storm Warning	OKX	30 hr
Jan 28, 12:31 AM EST	Mesoscale Discussion	SPC	5 hr
Jan 28, 7:53 AM EST	Mesoscale Discussion	SPC	5 hr
Feb 3, 4:03 AM EST	Winter Weather Advisory	OKX	23 hr
Feb 11, 3:49 AM EST	High Wind Watch	OKX	11 hr
Feb 11, 2:56 PM EST	Wind Advisory	OKX	35 hr
Feb 12, 5:13 AM EST	High Wind Warning	OKX	15 hr
Feb 28, 3:37 AM EST	Winter Storm Watch	OKX	27 hr
Mar 1, 3:48 AM EST	Winter Storm Warning	OKX	39 hr
Mar 2, 12:41 AM EST	Mesoscale Discussion	SPC	4 hr
Mar 23, 10:20 AM EDT	Red Flag Warning	OKX	13 hr
Mar 29, 7:49 PM EDT	Severe Thunderstorm Warning	OKX	56 min
Apr 3, 3:58 PM EDT	Wind Advisory	OKX	28 hr
Apr 16, 3:52 PM EDT	Fire Weather Watch	OKX	12 hr
Apr 17, 3:48 AM EDT	Red Flag Warning	OKX	15 hr
Apr 23, 4:43 AM EDT	Frost Advisory	OKX	27 hr
Apr 27, 3:58 PM EDT	Fire Weather Watch	OKX	12 hr
Apr 28, 10:39 AM EDT	Red Flag Warning	OKX	9 hr
Apr 29, 2:50 PM EDT	Frost Advisory	OKX	17 hr
May 7, 1:41 PM EDT	Areal Flood Advisory	OKX	64 min
May 15, 10:44 PM EDT	Dense Fog Advisory	OKX	11 hr
May 16, 6:29 PM EDT	Mesoscale Discussion	SPC	2 hr
May 18, 4:02 AM EDT	Freeze Warning	OKX	28 hr
May 24, 11:49 AM EDT	Mesoscale Discussion	SPC	116 min
May 24, 7:11 PM EDT	Mesoscale Discussion	SPC	64 min
Jun 4, 3:57 PM EDT	Flash Flood Watch	OKX	12 hr
Jun 9, 6:01 AM EDT	Mesoscale Discussion	SPC	59 min
Jun 9, 8:21 AM EDT	Areal Flood Advisory	OKX	114 min
Jun 11, 8:45 PM EDT	Areal Flood Advisory	OKX	65 min
Jun 15, 3:06 PM EDT	Areal Flood Advisory	OKX	84 min
Jun 15, 4:27 PM EDT	Areal Flood Advisory	OKX	67 min
Jun 18, 5:02 AM EDT	Flash Flood Watch	OKX	11 hr
Jun 19, 3:34 PM EDT	Flood Watch	OKX	37 hr
Jun 26, 2:19 PM EDT	Mesoscale Discussion	SPC	56 min
Jun 26, 2:42 PM EDT	Severe Thunderstorm Watch	SPC	7 hr
Jun 26, 4:45 PM EDT	Severe Thunderstorm Warning	OKX	45 min
Jun 26, 5:26 PM EDT	Severe Thunderstorm Warning	OKX	64 min
Jun 26, 6:02 PM EDT	Areal Flood Advisory	OKX	118 min
Jun 26, 6:27 PM EDT	Severe Thunderstorm Warning	OKX	45 min
Jun 26, 7:33 PM EDT	Mesoscale Discussion	SPC	57 min
Jun 30, 10:57 AM EDT	Mesoscale Discussion	SPC	93 min
Jun 30, 11:37 AM EDT	Severe Thunderstorm Watch	SPC	7 hr
Jun 30, 2:18 PM EDT	Mesoscale Discussion	SPC	57 min
Jun 30, 2:57 PM EDT	Areal Flood Advisory	OKX	3 hr
Jun 30, 4:07 PM EDT	Flash Flood Warning	OKX	3 hr
Jun 30, 4:07 PM EDT	Severe Thunderstorm Warning	OKX	38 min
Jun 30, 4:25 PM EDT	Mesoscale Discussion	SPC	65 min
Jun 30, 6:06 PM EDT	Mesoscale Discussion	SPC	54 min
Jul 1, 12:03 PM EDT	Mesoscale Discussion	SPC	87 min
Jul 1, 3:49 PM EDT	Flash Flood Watch	OKX	30 hr
Jul 1, 5:18 PM EDT	Areal Flood Advisory	OKX	34 min
Jul 2, 3:20 PM EDT	Mesoscale Discussion	SPC	55 min
Jul 7, 11:05 AM EDT	Severe Thunderstorm Watch	SPC	8 hr
Jul 7, 2:00 PM EDT	Mesoscale Discussion	SPC	90 min
Jul 7, 4:41 PM EDT	Mesoscale Discussion	SPC	2 hr
Jul 7, 10:25 PM EDT	Severe Thunderstorm Warning	OKX	48 min
Jul 7, 11:09 PM EDT	Severe Thunderstorm Warning	OKX	56 min
Jul 16, 4:04 PM EDT	Mesoscale Discussion	SPC	86 min
Jul 16, 4:55 PM EDT	Mesoscale Discussion	SPC	65 min
Jul 17, 6:14 AM EDT	Dense Fog Advisory	OKX	2 hr
Jul 17, 3:12 PM EDT	Mesoscale Discussion	SPC	93 min
Jul 17, 6:18 PM EDT	Mesoscale Discussion	SPC	57 min
Jul 17, 9:31 PM EDT	Areal Flood Advisory	OKX	89 min
Jul 17, 9:44 PM EDT	Severe Thunderstorm Warning	OKX	46 min
Jul 26, 4:35 AM EDT	Flash Flood Watch	OKX	19 hr
Jul 26, 3:14 PM EDT	Mesoscale Discussion	SPC	2 hr
Jul 26, 3:51 PM EDT	Severe Thunderstorm Watch	SPC	7 hr
Jul 26, 5:51 PM EDT	Severe Thunderstorm Warning	OKX	39 min
Jul 26, 5:52 PM EDT	Areal Flood Advisory	OKX	113 min
Jul 26, 5:58 PM EDT	Severe Thunderstorm Warning	OKX	32 min
Jul 26, 6:14 PM EDT	Flash Flood Warning	OKX	49 min
Jul 26, 6:37 PM EDT	Mesoscale Discussion	SPC	113 min
Jul 26, 8:41 PM EDT	Areal Flood Advisory	OKX	3 hr
Jul 26, 8:54 PM EDT	Severe Thunderstorm Warning	OKX	39 min
Jul 26, 10:06 PM EDT	Mesoscale Discussion	SPC	54 min
Jul 27, 2:20 PM EDT	Mesoscale Discussion	SPC	55 min
Jul 29, 4:21 AM EDT	Flash Flood Watch	OKX	24 hr
Jul 29, 12:22 PM EDT	Mesoscale Discussion	SPC	23 min
Jul 29, 12:49 PM EDT	Severe Thunderstorm Watch	SPC	8 hr
Jul 29, 12:54 PM EDT	Severe Thunderstorm Warning	OKX	66 min
Jul 29, 1:35 PM EDT	Areal Flood Advisory	OKX	115 min
Jul 29, 1:48 PM EDT	Severe Thunderstorm Warning	OKX	57 min
Jul 29, 1:53 PM EDT	Flash Flood Warning	OKX	2 hr
Jul 29, 2:22 PM EDT	Mesoscale Discussion	SPC	23 min
Jul 29, 5:05 PM EDT	Mesoscale Discussion	SPC	55 min
Jul 29, 5:59 PM EDT	Flash Flood Warning	OKX	3 hr
Jul 29, 6:42 PM EDT	Areal Flood Advisory	OKX	2 hr
Jul 29, 7:14 PM EDT	Mesoscale Discussion	SPC	61 min
Jul 30, 3:50 PM EDT	Flash Flood Watch	OKX	27 hr
Jul 31, 10:20 AM EDT	Mesoscale Discussion	SPC	85 min
Jul 31, 1:18 PM EDT	Severe Thunderstorm Watch	SPC	7 hr
Jul 31, 1:45 PM EDT	Areal Flood Advisory	OKX	3 hr
Jul 31, 2:53 PM EDT	Areal Flood Advisory	OKX	112 min
Jul 31, 3:05 PM EDT	Mesoscale Discussion	SPC	85 min
Aug 2, 10:01 AM EDT	Mesoscale Discussion	SPC	119 min
Aug 2, 1:05 PM EDT	Severe Thunderstorm Warning	OKX	40 min
Aug 2, 1:28 PM EDT	Flash Flood Warning	OKX	2 hr
Aug 9, 7:11 PM EDT	Mesoscale Discussion	SPC	2 hr
Aug 10, 12:58 AM EDT	Areal Flood Advisory	OKX	2 hr
Aug 10, 1:41 AM EDT	Areal Flood Advisory	OKX	2 hr
Aug 10, 4:40 PM EDT	Mesoscale Discussion	SPC	2 hr
Aug 10, 5:09 PM EDT	Severe Thunderstorm Watch	SPC	5 hr
Aug 10, 8:15 PM EDT	Mesoscale Discussion	SPC	2 hr
Aug 12, 1:01 PM EDT	Mesoscale Discussion	SPC	89 min
Aug 12, 8:01 PM EDT	Areal Flood Advisory	OKX	119 min
Aug 13, 4:35 AM EDT	Flash Flood Watch	OKX	10 hr
Aug 21, 10:01 AM EDT	Mesoscale Discussion	SPC	119 min
Aug 21, 11:28 AM EDT	Severe Thunderstorm Watch	SPC	7 hr
Aug 21, 1:58 PM EDT	Mesoscale Discussion	SPC	92 min
Aug 21, 3:37 PM EDT	Flash Flood Watch	OKX	36 hr
Aug 21, 3:48 PM EDT	Severe Thunderstorm Warning	OKX	27 min
Aug 22, 1:28 AM EDT	Areal Flood Advisory	OKX	3 hr
Aug 22, 1:41 AM EDT	Flash Flood Warning	OKX	3 hr
Aug 22, 5:00 PM EDT	Areal Flood Advisory	OKX	90 min
Aug 22, 11:44 PM EDT	Areal Flood Advisory	OKX	61 min
Aug 23, 3:54 PM EDT	Areal Flood Advisory	OKX	81 min
Aug 23, 4:56 PM EDT	Areal Flood Advisory	OKX	94 min
Aug 28, 9:13 AM EDT	Areal Flood Advisory	OKX	2 hr
Aug 28, 4:03 PM EDT	Flash Flood Watch	OKX	23 hr
Oct 6, 4:40 PM EDT	Wind Advisory	OKX	28 hr
Oct 11, 4:14 AM EDT	Frost Advisory	OKX	29 hr
Oct 14, 3:50 PM EDT	Freeze Warning	OKX	12 hr
Oct 18, 3:24 PM EDT	Freeze Warning	OKX	18 hr
Oct 19, 10:15 PM EDT	Frost Advisory	OKX	10 hr
Oct 24, 5:37 PM EDT	Areal Flood Advisory	OKX	4 hr
Oct 24, 7:02 PM EDT	Mesoscale Discussion	SPC	58 min
Oct 24, 8:57 PM EDT	Areal Flood Warning	OKX	93 min
Nov 6, 4:22 AM EST	Freeze Warning	OKX	28 hr
Nov 27, 3:51 AM EST	Wind Advisory	OKX	36 hr
Dec 3, 6:33 AM EST	Severe Thunderstorm Warning	OKX	42 min
Dec 5, 5:36 PM EST	Winter Weather Advisory	OKX	5 hr
Dec 8, 5:23 AM EST	Winter Weather Advisory	OKX	28 hr
Dec 8, 2:06 PM EST	Flash Flood Watch	OKX	21 hr
Dec 9, 8:39 AM EST	Areal Flood Advisory	OKX	111 min
Dec 9, 4:42 PM EST	Severe Thunderstorm Warning	OKX	18 min
Dec 13, 9:54 AM EST	Freezing Rain Advisory	OKX	8 hr
Dec 18, 4:02 AM EST	Winter Storm Watch	OKX	36 hr
Dec 18, 3:57 PM EST	Winter Storm Warning	OKX	43 hr
Dec 19, 12:27 PM EST	Mesoscale Discussion	SPC	6 hr
Dec 19, 7:25 PM EST	Mesoscale Discussion	SPC	5 hr
Dec 25, 4:20 AM EST	Freezing Rain Advisory	OKX	28 hr
Dec 26, 11:19 PM EST	Areal Flood Advisory	OKX	11 hr
Dec 27, 8:13 PM EST	River Flood Warning	PHI	51 hr
Dec 29, 3:54 AM EST	Wind Advisory	OKX	15 hr
Dec 31, 3:52 AM EST	Winter Weather Advisory	OKX	25 hr

By product

Every kind of product issued here, grouped by hazard. Each opens the same place narrowed to that product.

Product	Alerts
Severe storms
Severe Thunderstorm Warning	17
Severe Thunderstorm Watch	8
Mesoscale Discussion	44
Flooding
Areal Flood Warning	1
Flash Flood Warning	6
River Flood Warning	1
Flash Flood Watch	10
Flood Watch	1
Areal Flood Advisory	28
Winter
Ice Storm Warning	1
Winter Storm Warning	5
Winter Storm Watch	5
Freezing Rain Advisory	3
Winter Weather Advisory	9
Cold
Freeze Warning	4
Frost Advisory	4
Wind and dust
High Wind Warning	1
High Wind Watch	1
Wind Advisory	5
Fire
Red Flag Warning	3
Fire Weather Watch	2
Fog and smoke
Dense Fog Advisory	2

The busiest days

Days with the most alerts issued, by UTC date.

Nearby

Alerts in force now Tornadoes on record Forecast The radar archive 2008 2010

Sources

National Weather Service watches, warnings, advisories and statements from the Iowa Environmental Mesonet's VTEC archive, which reconstructs tornado, severe thunderstorm, flash flood and marine warnings back to 1986 from the NWS text archive. Storm Prediction Center watches and mesoscale discussions from SPC's archive through the Mesonet. County centers from the US Census Bureau. Warning verification from the Mesonet's Cow. Rebuilt daily.