Alert archive / New Jersey / Salem County

Weather alerts in Salem County, New Jersey, 2019

226 weather alerts in 2019, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.

Salem County and its neighbors

Each county as a circle sized by its count in 2019. Tap one for its archive.

Alerts: 226
Warnings: 62
Watches: 37
Advisories: 66
Busiest month: July51 alerts
Busiest day: April 26, 201911 alerts

Over time

By month

Warning verification

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

1 of 3 tornado warnings covering Salem County in 2019 had a tornado report inside them.

Salem County, 2019

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
Tornado warnings	3	1	67%	0
Severe thunderstorm warnings	46	32	30%	15	73%	31 min
Flash flood warnings	5	3	40%	0

Each office's whole area, 2019

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
NWS Philadelphia/Mount Holly: tornado warnings	32	4	88%	17	35%	5 min
NWS Philadelphia/Mount Holly: severe thunderstorm warnings	410	276	33%	1,175	87%	25 min
NWS Philadelphia/Mount Holly: flash flood warnings	86	51	41%	211	94%	96 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
Dec 31, 9:53 PM EST	Areal Flood Advisory	PHI	8 hr
Jan 7, 3:16 AM EST	Winter Weather Advisory	PHI	27 hr
Jan 11, 3:21 PM EST	Winter Weather Advisory	PHI	58 hr
Jan 19, 11:37 AM EST	Coastal Flood Advisory	PHI	27 hr
Jan 19, 2:47 PM EST	Flood Watch	PHI	19 hr
Jan 19, 11:52 PM EST	Areal Flood Advisory	PHI	8 hr
Jan 20, 1:11 AM EST	Areal Flood Advisory	PHI	8 hr
Jan 20, 3:38 AM EST	Wind Chill Advisory	PHI	50 hr
Jan 20, 9:49 AM EST	Wind Advisory	PHI	30 hr
Jan 23, 3:58 AM EST	Flood Watch	PHI	36 hr
Jan 23, 3:07 PM EST	Wind Advisory	PHI	21 hr
Jan 24, 11:53 AM EST	Areal Flood Advisory	PHI	4 hr
Jan 29, 9:08 PM EST	Wind Chill Advisory	PHI	37 hr
Jan 30, 3:32 AM EST	Wind Advisory	PHI	17 hr
Jan 30, 2:04 PM EST	Special Weather Statement	PHI	3 hr
Jan 30, 2:05 PM EST	Snow Squall Warning	PHI	55 min
Feb 1, 2:55 PM EST	Winter Weather Advisory	PHI	4 hr
Feb 4, 12:40 AM EST	Freezing Fog Advisory	PHI	8 hr
Feb 10, 3:36 AM EST	Winter Weather Advisory	PHI	36 hr
Feb 11, 4:37 AM EST	Winter Weather Advisory	PHI	37 hr
Feb 18, 3:16 PM EST	Winter Storm Watch	PHI	24 hr
Feb 19, 2:55 PM EST	Winter Weather Advisory	PHI	37 hr
Feb 20, 10:05 AM EST	Special Weather Statement	PHI	25 min
Feb 23, 4:02 AM EST	High Wind Watch	PHI	23 hr
Feb 23, 2:58 PM EST	High Wind Warning	PHI	48 hr
Feb 25, 2:58 PM EST	Wind Advisory	PHI	3 hr
Feb 28, 2:50 PM EST	Winter Weather Advisory	PHI	19 hr
Mar 2, 3:35 AM EST	Winter Storm Watch	PHI	24 hr
Mar 3, 4:01 AM EST	Winter Storm Warning	PHI	24 hr
Mar 3, 4:01 AM EST	Winter Weather Advisory	PHI	24 hr
Mar 3, 5:41 PM EST	Mesoscale Discussion	SPC	4 hr
Mar 20, 8:18 PM EDT	Coastal Flood Advisory	PHI	34 hr
Mar 21, 3:22 AM EDT	Flood Watch	PHI	24 hr
Mar 22, 6:35 PM EDT	Special Weather Statement	PHI	25 min
Mar 22, 6:58 PM EDT	Special Weather Statement	PHI	47 min
Apr 2, 3:02 PM EDT	Fire Weather Watch	PHI	12 hr
Apr 3, 3:16 AM EDT	Red Flag Warning	PHI	20 hr
Apr 14, 11:56 PM EDT	Mesoscale Discussion	SPC	2 hr
Apr 15, 1:05 AM EDT	Tornado Watch	SPC	5 hr
Apr 15, 2:46 AM EDT	Severe Thunderstorm Warning	PHI	44 min
Apr 15, 3:07 AM EDT	Severe Thunderstorm Warning	PHI	38 min
Apr 15, 3:19 AM EDT	Tornado Warning	PHI	26 min
Apr 15, 3:19 AM EDT	Wind Advisory	PHI	18 hr
Apr 15, 3:41 AM EDT	Severe Thunderstorm Warning	PHI	64 min
Apr 15, 3:50 AM EDT	Mesoscale Discussion	SPC	55 min
Apr 18, 3:17 PM EDT	Flash Flood Watch	PHI	42 hr
Apr 18, 4:15 PM EDT	Coastal Flood Advisory	PHI	12 hr
Apr 19, 8:29 PM EDT	Mesoscale Discussion	SPC	91 min
Apr 20, 5:26 AM EDT	Areal Flood Advisory	PHI	4 hr
Apr 26, 10:15 AM EDT	Special Weather Statement	PHI	30 min
Apr 26, 11:19 AM EDT	Special Weather Statement	PHI	41 min
Apr 26, 11:37 AM EDT	Mesoscale Discussion	SPC	113 min
Apr 26, 1:33 PM EDT	Tornado Watch	SPC	6 hr
Apr 26, 2:09 PM EDT	Mesoscale Discussion	SPC	2 hr
Apr 26, 4:26 PM EDT	Mesoscale Discussion	SPC	94 min
Apr 26, 4:28 PM EDT	Severe Thunderstorm Warning	PHI	47 min
Apr 26, 4:59 PM EDT	Areal Flood Advisory	PHI	4 hr
Apr 26, 5:07 PM EDT	Severe Thunderstorm Warning	PHI	38 min
Apr 26, 5:15 PM EDT	Areal Flood Advisory	PHI	4 hr
Apr 26, 5:37 PM EDT	Severe Thunderstorm Warning	PHI	38 min
May 2, 4:19 AM EDT	Dense Fog Advisory	PHI	5 hr
May 4, 3:11 PM EDT	Flash Flood Watch	PHI	21 hr
May 5, 5:50 AM EDT	Coastal Flood Advisory	PHI	24 hr
May 12, 5:58 AM EDT	Coastal Flood Advisory	PHI	26 hr
May 13, 2:28 PM EDT	Areal Flood Advisory	PHI	4 hr
May 23, 11:22 PM EDT	Severe Thunderstorm Warning	PHI	38 min
May 26, 11:14 AM EDT	Mesoscale Discussion	SPC	3 hr
May 26, 5:45 PM EDT	Mesoscale Discussion	SPC	2 hr
May 28, 1:02 PM EDT	Mesoscale Discussion	SPC	118 min
May 28, 1:48 PM EDT	Tornado Watch	SPC	8 hr
May 28, 5:34 PM EDT	Mesoscale Discussion	SPC	86 min
May 28, 6:04 PM EDT	Special Weather Statement	PHI	41 min
May 28, 6:11 PM EDT	Severe Thunderstorm Warning	PHI	64 min
May 28, 6:52 PM EDT	Severe Thunderstorm Warning	PHI	38 min
May 28, 6:59 PM EDT	Severe Thunderstorm Warning	PHI	61 min
May 28, 7:20 PM EDT	Severe Thunderstorm Warning	PHI	40 min
May 28, 7:53 PM EDT	Severe Thunderstorm Warning	PHI	52 min
May 28, 7:55 PM EDT	Areal Flood Advisory	PHI	2 hr
May 28, 8:07 PM EDT	Mesoscale Discussion	SPC	113 min
May 29, 3:18 AM EDT	Flash Flood Watch	PHI	18 hr
May 29, 1:10 PM EDT	Tornado Watch	SPC	8 hr
May 29, 3:47 PM EDT	Mesoscale Discussion	SPC	118 min
May 29, 6:02 PM EDT	Special Weather Statement	PHI	28 min
May 29, 7:08 PM EDT	Severe Thunderstorm Warning	PHI	52 min
May 29, 7:12 PM EDT	Areal Flood Advisory	PHI	3 hr
May 30, 3:20 AM EDT	Flash Flood Watch	PHI	18 hr
May 30, 12:15 PM EDT	Mesoscale Discussion	SPC	2 hr
May 30, 2:01 PM EDT	Severe Thunderstorm Watch	SPC	5 hr
May 30, 3:56 PM EDT	Mesoscale Discussion	SPC	64 min
May 30, 4:46 PM EDT	Special Weather Statement	PHI	29 min
May 30, 5:14 PM EDT	Special Weather Statement	PHI	31 min
May 30, 5:22 PM EDT	Areal Flood Advisory	PHI	2 hr
Jun 2, 3:05 PM EDT	Severe Thunderstorm Watch	SPC	7 hr
Jun 2, 6:24 PM EDT	Special Weather Statement	PHI	36 min
Jun 2, 6:43 PM EDT	Severe Thunderstorm Warning	PHI	47 min
Jun 2, 7:14 PM EDT	Severe Thunderstorm Warning	PHI	46 min
Jun 2, 7:51 PM EDT	Severe Thunderstorm Warning	PHI	39 min
Jun 13, 5:08 AM EDT	Areal Flood Advisory	PHI	4 hr
Jun 13, 7:33 AM EDT	Areal Flood Advisory	PHI	3 hr
Jun 13, 7:24 PM EDT	Areal Flood Advisory	PHI	4 hr
Jun 13, 7:44 PM EDT	Special Weather Statement	PHI	31 min
Jun 13, 8:09 PM EDT	Tornado Warning	PHI	36 min
Jun 16, 1:53 PM EDT	Mesoscale Discussion	SPC	97 min
Jun 16, 9:33 PM EDT	Special Weather Statement	PHI	27 min
Jun 17, 12:31 AM EDT	Special Weather Statement	PHI	29 min
Jun 17, 1:09 AM EDT	Severe Thunderstorm Warning	PHI	36 min
Jun 17, 3:51 AM EDT	Flash Flood Watch	PHI	47 hr
Jun 17, 2:03 PM EDT	Mesoscale Discussion	SPC	117 min
Jun 17, 4:05 PM EDT	Severe Thunderstorm Watch	SPC	6 hr
Jun 18, 12:23 PM EDT	Mesoscale Discussion	SPC	97 min
Jun 18, 2:11 PM EDT	Severe Thunderstorm Watch	SPC	7 hr
Jun 18, 4:47 PM EDT	Mesoscale Discussion	SPC	88 min
Jun 19, 3:17 AM EDT	Flash Flood Watch	PHI	43 hr
Jun 19, 11:19 PM EDT	Flash Flood Warning	PHI	5 hr
Jun 20, 1:53 PM EDT	Mesoscale Discussion	SPC	2 hr
Jun 20, 2:26 PM EDT	Special Weather Statement	PHI	94 min
Jun 20, 2:33 PM EDT	Severe Thunderstorm Warning	PHI	57 min
Jun 20, 2:48 PM EDT	Flash Flood Warning	PHI	4 hr
Jun 20, 3:20 PM EDT	Flash Flood Warning	PHI	4 hr
Jun 29, 12:08 PM EDT	Severe Thunderstorm Watch	SPC	9 hr
Jun 29, 1:45 PM EDT	Mesoscale Discussion	SPC	90 min
Jun 29, 3:14 PM EDT	Severe Thunderstorm Warning	PHI	46 min
Jun 29, 3:24 PM EDT	Severe Thunderstorm Warning	PHI	36 min
Jun 29, 3:59 PM EDT	Severe Thunderstorm Warning	PHI	46 min
Jun 29, 4:00 PM EDT	Flash Flood Warning	PHI	3 hr
Jun 29, 4:01 PM EDT	Mesoscale Discussion	SPC	119 min
Jun 29, 4:28 PM EDT	Severe Thunderstorm Warning	PHI	47 min
Jul 2, 5:53 PM EDT	Mesoscale Discussion	SPC	2 hr
Jul 2, 7:27 PM EDT	Severe Thunderstorm Warning	PHI	48 min
Jul 2, 8:10 PM EDT	Severe Thunderstorm Warning	PHI	50 min
Jul 3, 2:22 PM EDT	Coastal Flood Advisory	PHI	12 hr
Jul 4, 2:28 PM EDT	Areal Flood Advisory	PHI	2 hr
Jul 6, 1:48 PM EDT	Mesoscale Discussion	SPC	2 hr
Jul 6, 3:55 PM EDT	Tornado Warning	PHI	50 min
Jul 6, 4:39 PM EDT	Severe Thunderstorm Warning	PHI	32 min
Jul 6, 5:04 PM EDT	Severe Thunderstorm Warning	PHI	17 min
Jul 6, 5:49 PM EDT	Areal Flood Advisory	PHI	4 hr
Jul 6, 7:33 PM EDT	Severe Thunderstorm Warning	PHI	42 min
Jul 11, 3:44 AM EDT	Flash Flood Watch	PHI	18 hr
Jul 11, 1:23 PM EDT	Special Weather Statement	PHI	52 min
Jul 11, 1:44 PM EDT	Severe Thunderstorm Warning	PHI	61 min
Jul 11, 5:59 PM EDT	Mesoscale Discussion	SPC	2 hr
Jul 11, 6:14 PM EDT	Severe Thunderstorm Warning	PHI	61 min
Jul 11, 6:15 PM EDT	Flash Flood Warning	PHI	4 hr
Jul 11, 7:27 PM EDT	Areal Flood Advisory	PHI	7 hr
Jul 16, 2:44 PM EDT	Excessive Heat Warning	PHI	5 days
Jul 16, 2:44 PM EDT	Heat Advisory	PHI	29 hr
Jul 17, 3:54 AM EDT	Flash Flood Watch	PHI	19 hr
Jul 17, 1:29 PM EDT	Mesoscale Discussion	SPC	3 hr
Jul 17, 3:14 PM EDT	Excessive Heat Watch	PHI	24 hr
Jul 17, 4:51 PM EDT	Severe Thunderstorm Watch	SPC	6 hr
Jul 17, 6:38 PM EDT	Mesoscale Discussion	SPC	97 min
Jul 17, 7:15 PM EDT	Severe Thunderstorm Warning	PHI	45 min
Jul 17, 7:44 PM EDT	Severe Thunderstorm Warning	PHI	46 min
Jul 17, 8:15 PM EDT	Severe Thunderstorm Warning	PHI	45 min
Jul 18, 1:49 PM EDT	Mesoscale Discussion	SPC	2 hr
Jul 18, 2:24 PM EDT	Areal Flood Advisory	PHI	3 hr
Jul 18, 3:59 PM EDT	Areal Flood Advisory	PHI	3 hr
Jul 18, 4:56 PM EDT	Areal Flood Advisory	PHI	3 hr
Jul 18, 5:57 PM EDT	Areal Flood Advisory	PHI	2 hr
Jul 21, 3:15 AM EDT	Flash Flood Watch	PHI	51 hr
Jul 21, 3:09 PM EDT	Heat Advisory	PHI	27 hr
Jul 21, 10:13 PM EDT	Severe Thunderstorm Warning	PHI	47 min
Jul 21, 10:54 PM EDT	Severe Thunderstorm Warning	PHI	25 min
Jul 22, 1:11 PM EDT	Mesoscale Discussion	SPC	94 min
Jul 22, 2:17 PM EDT	Severe Thunderstorm Watch	SPC	8 hr
Jul 22, 4:16 PM EDT	Severe Thunderstorm Warning	PHI	59 min
Jul 22, 4:20 PM EDT	Mesoscale Discussion	SPC	115 min
Jul 22, 4:40 PM EDT	Areal Flood Advisory	PHI	114 min
Jul 22, 5:14 PM EDT	Severe Thunderstorm Warning	PHI	61 min
Jul 22, 5:40 PM EDT	Severe Thunderstorm Warning	PHI	80 min
Jul 22, 8:51 PM EDT	Mesoscale Discussion	SPC	84 min
Jul 23, 7:48 PM EDT	Areal Flood Advisory	PHI	3 hr
Jul 31, 3:28 AM EDT	Flash Flood Watch	PHI	17 hr
Jul 31, 1:17 PM EDT	Severe Thunderstorm Watch	SPC	7 hr
Jul 31, 4:19 PM EDT	Mesoscale Discussion	SPC	56 min
Jul 31, 5:27 PM EDT	Severe Thunderstorm Warning	PHI	48 min
Jul 31, 5:41 PM EDT	Areal Flood Advisory	PHI	3 hr
Aug 1, 3:02 PM EDT	Coastal Flood Advisory	PHI	12 hr
Aug 1, 3:04 PM EDT	Special Weather Statement	PHI	26 min
Aug 1, 3:48 PM EDT	Special Weather Statement	PHI	42 min
Aug 7, 10:02 AM EDT	Flash Flood Watch	PHI	11 hr
Aug 7, 1:02 PM EDT	Mesoscale Discussion	SPC	88 min
Aug 7, 2:10 PM EDT	Severe Thunderstorm Watch	SPC	7 hr
Aug 7, 3:57 PM EDT	Mesoscale Discussion	SPC	93 min
Aug 7, 4:27 PM EDT	Severe Thunderstorm Warning	PHI	63 min
Aug 7, 5:16 PM EDT	Severe Thunderstorm Warning	PHI	59 min
Aug 7, 5:39 PM EDT	Severe Thunderstorm Warning	PHI	51 min
Aug 7, 6:01 PM EDT	Areal Flood Advisory	PHI	3 hr
Aug 7, 6:21 PM EDT	Severe Thunderstorm Warning	PHI	69 min
Aug 7, 6:56 PM EDT	Mesoscale Discussion	SPC	64 min
Aug 8, 7:40 PM EDT	Special Weather Statement	PHI	35 min
Aug 21, 11:31 AM EDT	Mesoscale Discussion	SPC	119 min
Aug 21, 3:27 PM EDT	Severe Thunderstorm Watch	SPC	4 hr
Sep 2, 2:01 PM EDT	Mesoscale Discussion	SPC	119 min
Sep 4, 7:24 PM EDT	Severe Thunderstorm Warning	PHI	51 min
Sep 4, 8:16 PM EDT	Severe Thunderstorm Warning	PHI	59 min
Sep 6, 3:20 AM EDT	Coastal Flood Advisory	PHI	16 hr
Sep 12, 2:02 PM EDT	Mesoscale Discussion	SPC	118 min
Sep 28, 5:51 PM EDT	Mesoscale Discussion	SPC	114 min
Oct 8, 3:36 PM EDT	Coastal Flood Advisory	PHI	43 hr
Oct 9, 4:45 AM EDT	Coastal Flood Watch	PHI	41 hr
Oct 10, 4:10 AM EDT	Coastal Flood Warning	PHI	45 hr
Oct 10, 4:10 AM EDT	Coastal Flood Advisory	PHI	19 hr
Oct 10, 3:36 PM EDT	Coastal Flood Advisory	PHI	65 hr
Oct 10, 11:05 PM EDT	Coastal Flood Advisory	PHI	115 min
Oct 15, 3:27 PM EDT	Wind Advisory	PHI	51 hr
Oct 16, 3:16 PM EDT	Special Weather Statement	PHI	59 min
Oct 26, 5:32 AM EDT	Coastal Flood Advisory	PHI	35 hr
Oct 28, 3:48 PM EDT	Coastal Flood Advisory	PHI	25 hr
Oct 31, 3:16 PM EDT	Wind Advisory	PHI	18 hr
Oct 31, 7:14 PM EDT	Mesoscale Discussion	SPC	2 hr
Oct 31, 7:56 PM EDT	Severe Thunderstorm Watch	SPC	6 hr
Oct 31, 9:58 PM EDT	Mesoscale Discussion	SPC	2 hr
Oct 31, 11:15 PM EDT	Severe Thunderstorm Warning	PHI	60 min
Oct 31, 11:54 PM EDT	Severe Thunderstorm Warning	PHI	66 min
Nov 1, 3:31 AM EDT	Freeze Watch	PHI	6 hr
Nov 1, 9:12 AM EDT	Freeze Warning	PHI	25 hr
Nov 15, 3:28 PM EST	Coastal Flood Watch	PHI	24 hr
Nov 16, 3:15 PM EST	Coastal Flood Warning	PHI	36 hr
Nov 17, 3:22 AM EST	Coastal Flood Advisory	PHI	37 hr
Nov 27, 3:37 AM EST	Wind Advisory	PHI	38 hr
Dec 15, 3:24 PM EST	Winter Weather Advisory	PHI	51 hr
Dec 17, 12:51 AM EST	Areal Flood Advisory	PHI	6 hr
Dec 17, 12:04 PM EST	Dense Fog Advisory	PHI	6 hr
Dec 26, 2:48 AM EST	Dense Fog Advisory	PHI	9 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	46
Tornado Warning	3
Severe Thunderstorm Watch	11
Tornado Watch	4
Mesoscale Discussion	41
Special Weather Statement	20
Flooding
Flash Flood Warning	5
Flash Flood Watch	11
Flood Watch	3
Areal Flood Advisory	26
Winter
Snow Squall Warning	1
Winter Storm Warning	1
Winter Storm Watch	2
Winter Weather Advisory	9
Heat
Excessive Heat Warning	1
Excessive Heat Watch	1
Heat Advisory	2
Cold
Freeze Warning	1
Freeze Watch	1
Wind Chill Advisory	2
Wind and dust
High Wind Warning	1
High Wind Watch	1
Wind Advisory	8
Fire
Red Flag Warning	1
Fire Weather Watch	1
Fog and smoke
Dense Fog Advisory	3
Freezing Fog Advisory	1
Coast and beach
Coastal Flood Warning	2
Coastal Flood Watch	2
Coastal Flood Advisory	15

The busiest days

Days with the most alerts issued, by UTC date.

Nearby

Alerts in force now Tornadoes on record Forecast The radar archive 2018 2020

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.