Alert archive / Pennsylvania / Delaware County

Weather alerts in Delaware County, Pennsylvania, 2018

241 weather alerts in 2018, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.

Delaware County and its neighbors

Each county as a circle sized by its count in 2018. Tap one for its archive.

Alerts: 241
Warnings: 60
Watches: 31
Advisories: 104
Busiest month: July34 alerts
Busiest day: July 3, 201811 alerts

Over time

By month

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 3, 4:03 AM EST	Winter Storm Warning	PHI	38 hr
Jan 3, 4:03 AM EST	Winter Weather Advisory	PHI	38 hr
Jan 4, 3:48 AM EST	Wind Chill Advisory	PHI	3 days
Jan 7, 2:50 PM EST	Winter Weather Advisory	PHI	33 hr
Jan 11, 2:34 PM EST	Wind Advisory	PHI	13 hr
Jan 23, 10:42 AM EST	Special Weather Statement	PHI	48 min
Feb 4, 6:01 PM EST	Areal Flood Advisory	PHI	4 hr
Feb 6, 3:37 PM EST	Winter Weather Advisory	PHI	27 hr
Feb 10, 3:20 AM EST	Flood Watch	PHI	39 hr
Feb 10, 11:01 PM EST	Dense Fog Advisory	PHI	8 hr
Feb 11, 7:53 AM EST	Areal Flood Advisory	PHI	16 hr
Feb 17, 3:45 AM EST	Winter Weather Advisory	PHI	20 hr
Feb 17, 6:32 PM EST	Mesoscale Discussion	SPC	4 hr
Feb 19, 11:00 PM EST	Dense Fog Advisory	PHI	11 hr
Feb 28, 3:12 PM EST	High Wind Watch	PHI	24 hr
Mar 1, 11:44 AM EST	High Wind Warning	PHI	40 hr
Mar 1, 3:30 PM EST	Wind Advisory	PHI	45 hr
Mar 2, 2:26 AM EST	Areal Flood Advisory	PHI	4 hr
Mar 2, 3:36 AM EST	Special Weather Statement	PHI	54 min
Mar 2, 6:29 AM EST	Areal Flood Advisory	PHI	4 hr
Mar 2, 10:23 AM EST	Areal Flood Advisory	PHI	4 hr
Mar 4, 2:57 PM EST	Coastal Flood Advisory	PHI	23 hr
Mar 5, 3:34 AM EST	Winter Storm Watch	PHI	36 hr
Mar 6, 3:37 AM EST	Winter Storm Warning	PHI	41 hr
Mar 6, 2:30 PM EST	Coastal Flood Advisory	PHI	15 hr
Mar 6, 2:30 PM EST	Coastal Flood Advisory	PHI	37 hr
Mar 7, 1:25 PM EST	Mesoscale Discussion	SPC	6 hr
Mar 19, 3:36 PM EDT	Winter Storm Watch	PHI	13 hr
Mar 19, 3:36 PM EDT	Winter Weather Advisory	PHI	13 hr
Mar 20, 4:41 AM EDT	Winter Storm Warning	PHI	47 hr
Mar 20, 12:19 PM EDT	Mesoscale Discussion	SPC	4 hr
Mar 25, 9:17 AM EDT	Special Weather Statement	PHI	118 min
Apr 1, 4:08 AM EDT	Winter Weather Advisory	PHI	33 hr
Apr 3, 3:32 PM EDT	Wind Advisory	PHI	28 hr
Apr 4, 12:01 AM EDT	Dense Fog Advisory	PHI	10 hr
Apr 4, 3:44 AM EDT	High Wind Warning	PHI	16 hr
Apr 4, 12:29 PM EDT	Special Weather Statement	PHI	31 min
Apr 4, 12:39 PM EDT	Severe Thunderstorm Warning	PHI	51 min
Apr 15, 6:08 AM EDT	Coastal Flood Advisory	PHI	39 hr
Apr 15, 3:41 PM EDT	Flash Flood Watch	PHI	20 hr
Apr 16, 5:34 AM EDT	Areal Flood Advisory	PHI	4 hr
Apr 16, 5:52 AM EDT	Areal Flood Advisory	PHI	7 hr
Apr 16, 7:04 AM EDT	Flash Flood Warning	PHI	4 hr
Apr 16, 7:45 AM EDT	River Flood Warning	PHI	4 hr
Apr 16, 10:45 AM EDT	Areal Flood Warning	PHI	4 hr
Apr 16, 2:45 PM EDT	Coastal Flood Warning	PHI	3 hr
Apr 28, 5:16 AM EDT	Dense Fog Advisory	PHI	4 hr
Apr 28, 6:09 PM EDT	Special Weather Statement	PHI	36 min
Apr 28, 6:26 PM EDT	Special Weather Statement	PHI	49 min
May 2, 3:42 AM EDT	Red Flag Warning	PHI	17 hr
May 3, 3:35 AM EDT	Red Flag Warning	PHI	16 hr
May 3, 6:03 PM EDT	Mesoscale Discussion	SPC	2 hr
May 4, 10:28 PM EDT	Special Weather Statement	PHI	62 min
May 12, 3:59 PM EDT	Mesoscale Discussion	SPC	3 hr
May 12, 4:58 PM EDT	Tornado Watch	SPC	5 hr
May 12, 7:00 PM EDT	Severe Thunderstorm Warning	PHI	45 min
May 12, 7:10 PM EDT	Areal Flood Advisory	PHI	2 hr
May 12, 7:16 PM EDT	Mesoscale Discussion	SPC	59 min
May 12, 7:30 PM EDT	Severe Thunderstorm Warning	PHI	45 min
May 12, 7:37 PM EDT	Areal Flood Advisory	PHI	2 hr
May 12, 7:45 PM EDT	Severe Thunderstorm Warning	PHI	45 min
May 12, 8:00 PM EDT	Areal Flood Advisory	PHI	3 hr
May 13, 10:17 PM EDT	Special Weather Statement	PHI	28 min
May 15, 3:40 AM EDT	Flash Flood Watch	PHI	21 hr
May 15, 1:46 PM EDT	Severe Thunderstorm Watch	SPC	9 hr
May 15, 3:33 PM EDT	Mesoscale Discussion	SPC	117 min
May 15, 5:22 PM EDT	Severe Thunderstorm Warning	PHI	38 min
May 15, 5:35 PM EDT	Areal Flood Advisory	PHI	4 hr
May 15, 5:38 PM EDT	Severe Thunderstorm Warning	PHI	67 min
May 15, 5:53 PM EDT	Severe Thunderstorm Warning	PHI	52 min
May 16, 3:35 PM EDT	Flood Watch	PHI	3 days
May 17, 2:32 AM EDT	Areal Flood Advisory	PHI	4 hr
May 17, 6:29 AM EDT	Areal Flood Advisory	PHI	2 hr
May 17, 10:04 AM EDT	River Flood Warning	PHI	8 hr
May 18, 4:04 AM EDT	Coastal Flood Advisory	PHI	27 hr
May 26, 11:38 PM EDT	Flash Flood Watch	PHI	23 hr
May 27, 9:39 AM EDT	Areal Flood Advisory	PHI	2 hr
May 27, 3:22 PM EDT	Coastal Flood Advisory	PHI	12 hr
May 30, 4:43 AM EDT	Dense Fog Advisory	PHI	4 hr
Jun 2, 3:26 AM EDT	Flash Flood Watch	PHI	24 hr
Jun 2, 10:05 PM EDT	Special Weather Statement	PHI	40 min
Jun 2, 10:51 PM EDT	Special Weather Statement	PHI	54 min
Jun 2, 11:27 PM EDT	Areal Flood Advisory	PHI	2 hr
Jun 3, 6:16 PM EDT	Areal Flood Advisory	PHI	3 hr
Jun 5, 3:05 PM EDT	Mesoscale Discussion	SPC	2 hr
Jun 5, 7:13 PM EDT	Special Weather Statement	PHI	47 min
Jun 10, 3:48 AM EDT	Flash Flood Watch	PHI	28 hr
Jun 10, 10:38 PM EDT	Areal Flood Warning	PHI	20 hr
Jun 10, 11:33 PM EDT	Flash Flood Warning	PHI	5 hr
Jun 11, 1:16 AM EDT	Areal Flood Advisory	PHI	8 hr
Jun 17, 2:39 PM EDT	Heat Advisory	PHI	29 hr
Jun 24, 6:16 PM EDT	Mesoscale Discussion	SPC	119 min
Jun 24, 7:10 PM EDT	Special Weather Statement	PHI	50 min
Jun 24, 7:32 PM EDT	Severe Thunderstorm Warning	PHI	28 min
Jun 29, 3:41 PM EDT	Excessive Heat Warning	PHI	4 days
Jun 29, 3:41 PM EDT	Heat Advisory	PHI	5 days
Jul 3, 2:15 PM EDT	Special Weather Statement	PHI	30 min
Jul 3, 5:24 PM EDT	Areal Flood Advisory	PHI	4 hr
Jul 3, 5:45 PM EDT	Flash Flood Warning	PHI	4 hr
Jul 3, 6:18 PM EDT	Severe Thunderstorm Warning	PHI	42 min
Jul 3, 6:21 PM EDT	Special Weather Statement	PHI	24 min
Jul 3, 6:40 PM EDT	Areal Flood Advisory	PHI	4 hr
Jul 3, 6:50 PM EDT	Special Weather Statement	PHI	55 min
Jul 3, 6:54 PM EDT	Severe Thunderstorm Warning	PHI	51 min
Jul 3, 6:58 PM EDT	Flash Flood Warning	PHI	4 hr
Jul 3, 7:06 PM EDT	Flash Flood Warning	PHI	2 hr
Jul 3, 7:22 PM EDT	Severe Thunderstorm Warning	PHI	21 min
Jul 4, 7:00 PM EDT	Special Weather Statement	PHI	30 min
Jul 4, 7:18 PM EDT	Areal Flood Advisory	PHI	3 hr
Jul 5, 2:59 PM EDT	Flash Flood Watch	PHI	20 hr
Jul 6, 5:37 AM EDT	Areal Flood Advisory	PHI	4 hr
Jul 17, 3:36 AM EDT	Flash Flood Watch	PHI	15 hr
Jul 17, 11:49 AM EDT	Mesoscale Discussion	SPC	116 min
Jul 17, 2:50 PM EDT	Areal Flood Advisory	PHI	3 hr
Jul 17, 3:35 PM EDT	Special Weather Statement	PHI	25 min
Jul 20, 2:44 PM EDT	Flash Flood Watch	PHI	34 hr
Jul 23, 3:45 AM EDT	Flash Flood Watch	PHI	68 hr
Jul 23, 7:00 AM EDT	River Flood Warning	PHI	9 hr
Jul 23, 2:40 PM EDT	Mesoscale Discussion	SPC	3 hr
Jul 24, 12:56 AM EDT	Areal Flood Advisory	PHI	4 hr
Jul 24, 4:56 AM EDT	Areal Flood Advisory	PHI	4 hr
Jul 25, 4:34 PM EDT	Areal Flood Advisory	PHI	2 hr
Jul 25, 5:43 PM EDT	Special Weather Statement	PHI	32 min
Jul 25, 8:24 PM EDT	Areal Flood Advisory	PHI	2 hr
Jul 27, 9:50 AM EDT	Flash Flood Watch	PHI	13 hr
Jul 27, 12:59 PM EDT	Mesoscale Discussion	SPC	91 min
Jul 27, 1:17 PM EDT	Severe Thunderstorm Watch	SPC	9 hr
Jul 27, 4:50 PM EDT	Mesoscale Discussion	SPC	55 min
Jul 27, 7:06 PM EDT	Mesoscale Discussion	SPC	54 min
Jul 27, 7:37 PM EDT	Areal Flood Advisory	PHI	116 min
Aug 1, 11:35 PM EDT	Severe Thunderstorm Warning	PHI	20 min
Aug 2, 11:46 AM EDT	Mesoscale Discussion	SPC	119 min
Aug 3, 5:45 PM EDT	Special Weather Statement	PHI	60 min
Aug 5, 3:05 PM EDT	Heat Advisory	PHI	27 hr
Aug 6, 2:42 PM EDT	Areal Flood Advisory	PHI	36 min
Aug 7, 12:19 PM EDT	Heat Advisory	PHI	6 hr
Aug 7, 3:31 PM EDT	Heat Advisory	PHI	26 hr
Aug 10, 5:10 PM EDT	Coastal Flood Advisory	PHI	11 hr
Aug 11, 3:24 AM EDT	Flash Flood Watch	PHI	20 hr
Aug 11, 4:26 AM EDT	Coastal Flood Advisory	PHI	24 hr
Aug 11, 1:48 PM EDT	Flash Flood Warning	PHI	4 hr
Aug 11, 1:51 PM EDT	Severe Thunderstorm Warning	PHI	39 min
Aug 11, 5:58 PM EDT	Areal Flood Advisory	PHI	5 hr
Aug 12, 5:28 AM EDT	Coastal Flood Advisory	PHI	24 hr
Aug 12, 10:08 PM EDT	Flash Flood Watch	PHI	24 hr
Aug 13, 6:24 AM EDT	Areal Flood Advisory	PHI	4 hr
Aug 13, 6:50 AM EDT	Flash Flood Warning	PHI	6 hr
Aug 13, 8:03 AM EDT	Areal Flood Advisory	PHI	4 hr
Aug 13, 8:43 AM EDT	Flash Flood Warning	PHI	4 hr
Aug 13, 11:05 AM EDT	River Flood Warning	PHI	30 hr
Aug 13, 12:37 PM EDT	Areal Flood Warning	PHI	18 hr
Aug 13, 8:16 PM EDT	Areal Flood Advisory	PHI	3 hr
Aug 17, 7:31 PM EDT	Mesoscale Discussion	SPC	89 min
Aug 18, 12:56 AM EDT	Areal Flood Advisory	PHI	4 hr
Aug 18, 3:16 AM EDT	Flash Flood Watch	PHI	20 hr
Aug 18, 4:33 PM EDT	Special Weather Statement	PHI	42 min
Aug 19, 10:00 AM EDT	Areal Flood Advisory	PHI	110 min
Aug 19, 2:05 PM EDT	Areal Flood Advisory	PHI	8 hr
Aug 21, 11:18 PM EDT	Areal Flood Advisory	PHI	3 hr
Aug 27, 2:58 AM EDT	Heat Advisory	PHI	65 hr
Aug 31, 7:55 AM EDT	Areal Flood Advisory	PHI	3 hr
Sep 3, 3:02 AM EDT	Heat Advisory	PHI	4 days
Sep 6, 7:51 PM EDT	Special Weather Statement	PHI	39 min
Sep 7, 6:41 PM EDT	Flash Flood Warning	PHI	4 hr
Sep 7, 10:41 PM EDT	Areal Flood Warning	PHI	8 hr
Sep 8, 3:34 AM EDT	Flood Watch	PHI	60 hr
Sep 8, 4:29 AM EDT	Areal Flood Advisory	PHI	4 hr
Sep 8, 5:31 AM EDT	Coastal Flood Advisory	PHI	24 hr
Sep 8, 8:15 AM EDT	Areal Flood Advisory	PHI	119 min
Sep 9, 12:05 AM EDT	Coastal Flood Warning	PHI	54 hr
Sep 9, 5:04 AM EDT	Coastal Flood Watch	PHI	11 hr
Sep 10, 5:02 AM EDT	Coastal Flood Watch	PHI	11 hr
Sep 10, 4:08 PM EDT	Coastal Flood Advisory	PHI	13 hr
Sep 11, 5:48 AM EDT	Coastal Flood Advisory	PHI	14 hr
Sep 12, 2:05 AM EDT	Dense Fog Advisory	PHI	8 hr
Sep 12, 4:36 PM EDT	Areal Flood Advisory	PHI	3 hr
Sep 18, 2:09 AM EDT	Special Weather Statement	PHI	81 min
Sep 18, 4:13 AM EDT	Special Weather Statement	PHI	92 min
Sep 18, 9:27 AM EDT	Flash Flood Watch	PHI	6 hr
Sep 18, 10:57 AM EDT	Areal Flood Advisory	PHI	3 hr
Sep 18, 12:36 PM EDT	Areal Flood Advisory	PHI	3 hr
Sep 24, 4:27 AM EDT	Coastal Flood Advisory	PHI	42 hr
Sep 25, 2:59 PM EDT	Areal Flood Advisory	PHI	4 hr
Sep 25, 4:03 PM EDT	Areal Flood Advisory	PHI	3 hr
Sep 25, 4:19 PM EDT	Flash Flood Warning	PHI	4 hr
Sep 25, 5:35 PM EDT	Flash Flood Warning	PHI	4 hr
Sep 26, 3:40 PM EDT	Mesoscale Discussion	SPC	3 hr
Sep 26, 5:02 PM EDT	Severe Thunderstorm Watch	SPC	4 hr
Sep 26, 7:06 PM EDT	Severe Thunderstorm Warning	PHI	54 min
Sep 26, 8:03 PM EDT	Special Weather Statement	PHI	27 min
Sep 27, 3:24 AM EDT	Flood Watch	PHI	27 hr
Sep 28, 1:44 AM EDT	Areal Flood Advisory	PHI	5 hr
Sep 28, 3:13 AM EDT	Areal Flood Warning	PHI	4 hr
Sep 28, 7:33 AM EDT	Areal Flood Warning	PHI	5 hr
Sep 28, 8:28 AM EDT	River Flood Warning	PHI	13 hr
Oct 2, 9:51 PM EDT	Special Weather Statement	PHI	114 min
Oct 5, 11:57 PM EDT	Coastal Flood Advisory	PHI	3 hr
Oct 6, 5:31 AM EDT	Coastal Flood Advisory	PHI	21 hr
Oct 10, 3:16 PM EDT	Flash Flood Watch	PHI	38 hr
Oct 11, 8:27 PM EDT	Areal Flood Advisory	PHI	8 hr
Oct 11, 9:43 PM EDT	Areal Flood Advisory	PHI	8 hr
Oct 12, 2:55 AM EDT	Areal Flood Advisory	PHI	2 hr
Oct 15, 10:55 PM EDT	Special Weather Statement	PHI	35 min
Oct 18, 3:05 AM EDT	Frost Advisory	PHI	30 hr
Oct 20, 10:31 PM EDT	Special Weather Statement	PHI	29 min
Oct 21, 3:07 AM EDT	Frost Advisory	PHI	30 hr
Oct 26, 3:20 PM EDT	Coastal Flood Advisory	PHI	27 hr
Nov 2, 10:09 PM EDT	Severe Thunderstorm Warning	PHI	51 min
Nov 2, 10:53 PM EDT	Severe Thunderstorm Warning	PHI	67 min
Nov 2, 11:23 PM EDT	Tornado Warning	PHI	24 min
Nov 2, 11:25 PM EDT	Areal Flood Advisory	PHI	4 hr
Nov 2, 11:53 PM EDT	Special Weather Statement	PHI	37 min
Nov 3, 3:21 AM EDT	Areal Flood Warning	PHI	4 hr
Nov 3, 5:00 AM EDT	River Flood Warning	PHI	6 hr
Nov 3, 7:01 AM EDT	Areal Flood Warning	PHI	5 hr
Nov 6, 4:32 AM EST	Coastal Flood Advisory	PHI	11 hr
Nov 6, 11:47 AM EST	Areal Flood Advisory	PHI	2 hr
Nov 9, 3:23 AM EST	Coastal Flood Advisory	PHI	14 hr
Nov 9, 2:03 PM EST	Freeze Warning	PHI	43 hr
Nov 9, 4:42 PM EST	Areal Flood Advisory	PHI	4 hr
Nov 14, 3:31 PM EST	Winter Weather Advisory	PHI	29 hr
Nov 15, 9:56 AM EST	Mesoscale Discussion	SPC	6 hr
Nov 24, 5:52 PM EST	Areal Flood Advisory	PHI	6 hr
Nov 24, 10:15 PM EST	Areal Flood Warning	PHI	6 hr
Nov 24, 10:34 PM EST	River Flood Warning	PHI	5 hr
Nov 25, 12:16 AM EST	River Flood Warning	PHI	15 hr
Nov 25, 3:25 PM EST	Coastal Flood Advisory	PHI	34 hr
Nov 25, 3:35 PM EST	Flood Watch	PHI	27 hr
Nov 27, 3:13 PM EST	Wind Advisory	PHI	27 hr
Dec 2, 3:17 AM EST	Coastal Flood Advisory	PHI	9 hr
Dec 2, 8:24 AM EST	Dense Fog Advisory	PHI	21 hr
Dec 16, 12:28 PM EST	Areal Flood Advisory	PHI	4 hr
Dec 18, 3:16 PM EST	Flood Watch	PHI	3 days
Dec 20, 3:39 PM EST	Coastal Flood Advisory	PHI	22 hr
Dec 21, 4:02 AM EST	Areal Flood Warning	PHI	4 hr
Dec 21, 5:10 AM EST	River Flood Warning	PHI	5 hr
Dec 21, 5:20 AM EST	River Flood Warning	PHI	14 hr
Dec 21, 8:04 AM EST	Areal Flood Warning	PHI	7 hr
Dec 27, 3:13 PM EST	Flood Watch	PHI	28 hr
Dec 28, 11:23 AM EST	Areal Flood Advisory	PHI	8 hr
Dec 28, 8:57 PM 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	16
Tornado Warning	1
Severe Thunderstorm Watch	3
Tornado Watch	1
Mesoscale Discussion	18
Special Weather Statement	28
Flooding
Areal Flood Warning	11
Flash Flood Warning	11
River Flood Warning	10
Flash Flood Watch	15
Flood Watch	7
Areal Flood Advisory	54
Winter
Winter Storm Warning	3
Winter Storm Watch	2
Winter Weather Advisory	7
Heat
Excessive Heat Warning	1
Heat Advisory	7
Cold
Freeze Warning	1
Frost Advisory	2
Wind Chill Advisory	1
Wind and dust
High Wind Warning	2
High Wind Watch	1
Wind Advisory	4
Fire
Red Flag Warning	2
Fog and smoke
Dense Fog Advisory	8
Coast and beach
Coastal Flood Warning	2
Coastal Flood Watch	2
Coastal Flood Advisory	21

The busiest days

Days with the most alerts issued, by UTC date.

Nearby

Alerts in force now Tornadoes on record Forecast The radar archive 2017 2019

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. Rebuilt daily.