Alert archive / Pennsylvania / Delaware County

Weather alerts in Delaware County, Pennsylvania, 2012

251 weather alerts in 2012, 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 2012. Tap one for its archive.

Alerts: 251
Warnings: 54
Watches: 37
Advisories: 63
Busiest month: June42 alerts
Busiest day: September 18, 201210 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 11, 3:44 AM EST	Winter Weather Advisory	PHI	31 days
Jan 12, 1:19 PM EST	Coastal Flood Warning	PHI	73 min
Jan 12, 9:27 PM EST	Wind Advisory	PHI	20 hr
Jan 15, 3:51 AM EST	Special Weather Statement	PHI	54 min
Jan 15, 4:32 AM EST	Special Weather Statement	PHI	43 min
Jan 20, 3:46 AM EST	Winter Weather Advisory	PHI	41 days
Jan 21, 7:07 AM EST	Mesoscale Discussion	SPC	3 hr
Jan 27, 8:27 AM EST	Special Weather Statement	PHI	93 min
Jan 27, 2:15 PM EST	Wind Advisory	PHI	6 hr
Feb 8, 12:12 PM EST	Winter Weather Advisory	PHI	274 days
Feb 11, 3:19 PM EST	Special Weather Statement	PHI	3 hr
Feb 11, 3:37 PM EST	Wind Advisory	PHI	12 hr
Feb 11, 6:16 PM EST	Special Weather Statement	PHI	104 min
Feb 24, 3:40 AM EST	Wind Advisory	PHI	42 hr
Feb 25, 10:35 AM EST	Special Weather Statement	PHI	55 min
Feb 29, 6:44 PM EST	Special Weather Statement	PHI	61 min
Feb 29, 7:45 PM EST	Special Weather Statement	PHI	2 hr
Mar 3, 6:12 AM EST	Dense Fog Advisory	PHI	3 hr
Mar 3, 4:15 PM EST	Wind Advisory	PHI	2 hr
Mar 6, 2:37 PM EST	Fire Weather Watch	PHI	13 hr
Mar 7, 3:31 AM EST	Red Flag Warning	PHI	12 hr
Mar 9, 12:01 AM EST	Special Weather Statement	PHI	59 min
Mar 9, 12:58 AM EST	Special Weather Statement	PHI	62 min
Mar 20, 2:02 AM EDT	Dense Fog Advisory	PHI	8 hr
Mar 21, 8:02 PM EDT	Dense Fog Advisory	PHI	14 hr
Mar 25, 3:28 PM EDT	Freeze Watch	PHI	12 hr
Mar 26, 3:46 AM EDT	Freeze Warning	PHI	29 hr
Apr 4, 11:00 AM EDT	Red Flag Warning	PHI	9 hr
Apr 5, 3:15 PM EDT	Fire Weather Watch	PHI	11 hr
Apr 6, 2:40 AM EDT	Red Flag Warning	PHI	17 hr
Apr 6, 3:10 PM EDT	Fire Weather Watch	PHI	13 hr
Apr 6, 7:56 PM EDT	Red Flag Warning	PHI	24 hr
Apr 7, 3:49 AM EDT	Fire Weather Watch	PHI	18 hr
Apr 7, 8:14 PM EDT	Red Flag Warning	PHI	24 hr
Apr 8, 4:07 AM EDT	Fire Weather Watch	PHI	16 hr
Apr 8, 8:01 PM EDT	Red Flag Warning	PHI	24 hr
Apr 9, 4:03 AM EDT	Wind Advisory	PHI	14 hr
Apr 9, 3:12 PM EDT	Fire Weather Watch	PHI	13 hr
Apr 9, 8:04 PM EDT	Red Flag Warning	PHI	24 hr
Apr 16, 3:47 PM EDT	Fire Weather Watch	PHI	12 hr
Apr 17, 3:28 AM EDT	Red Flag Warning	PHI	17 hr
Apr 21, 3:15 PM EDT	Flood Watch	PHI	36 hr
Apr 21, 8:41 PM EDT	Special Weather Statement	PHI	109 min
Apr 21, 8:45 PM EDT	Severe Thunderstorm Warning	PHI	30 min
Apr 22, 3:45 AM EDT	Wind Advisory	PHI	20 hr
Apr 22, 4:14 AM EDT	Coastal Flood Advisory	PHI	20 hr
Apr 22, 9:00 PM EDT	Areal Flood Advisory	PHI	6 hr
Apr 27, 3:18 PM EDT	Frost Advisory	PHI	17 hr
Apr 29, 9:43 AM EDT	Frost Advisory	PHI	22 hr
May 4, 1:26 PM EDT	Mesoscale Discussion	SPC	2 hr
May 4, 9:54 PM EDT	Special Weather Statement	PHI	66 min
May 6, 3:47 AM EDT	Coastal Flood Advisory	PHI	24 hr
May 7, 5:42 AM EDT	Coastal Flood Statement	PHI	22 hr
May 15, 6:40 AM EDT	Special Weather Statement	PHI	50 min
May 15, 7:30 AM EDT	Special Weather Statement	PHI	2 hr
May 15, 11:05 PM EDT	Special Weather Statement	PHI	55 min
May 16, 12:12 AM EDT	Areal Flood Advisory	PHI	3 hr
May 16, 12:20 AM EDT	Special Weather Statement	PHI	55 min
May 16, 12:34 AM EDT	Flash Flood Warning	PHI	4 hr
May 16, 4:27 AM EDT	Areal Flood Warning	PHI	3 hr
May 17, 9:55 PM EDT	Coastal Flood Statement	PHI	108 min
May 24, 1:57 PM EDT	Special Weather Statement	PHI	63 min
May 24, 2:01 PM EDT	Areal Flood Advisory	PHI	83 min
May 24, 2:26 PM EDT	Special Weather Statement	PHI	64 min
May 26, 3:40 PM EDT	Excessive Heat Watch	PHI	23 hr
May 27, 3:01 PM EDT	Excessive Heat Warning	PHI	52 hr
May 29, 12:29 PM EDT	Flash Flood Watch	PHI	8 hr
May 29, 2:13 PM EDT	Mesoscale Discussion	SPC	62 min
May 29, 5:54 PM EDT	Severe Thunderstorm Watch	SPC	3 hr
May 29, 6:46 PM EDT	Special Weather Statement	PHI	89 min
May 29, 7:34 PM EDT	Special Weather Statement	PHI	56 min
May 29, 7:35 PM EDT	Areal Flood Advisory	PHI	115 min
Jun 1, 6:20 AM EDT	Coastal Flood Advisory	PHI	24 hr
Jun 1, 3:49 PM EDT	Mesoscale Discussion	SPC	56 min
Jun 1, 4:15 PM EDT	Flash Flood Watch	PHI	11 hr
Jun 1, 4:25 PM EDT	Mesoscale Discussion	SPC	65 min
Jun 1, 8:01 PM EDT	Tornado Watch	SPC	4 hr
Jun 1, 8:46 PM EDT	Areal Flood Advisory	PHI	5 hr
Jun 2, 11:28 AM EDT	Coastal Flood Advisory	PHI	15 hr
Jun 3, 3:57 AM EDT	Coastal Flood Advisory	PHI	23 hr
Jun 3, 1:32 PM EDT	Special Weather Statement	PHI	118 min
Jun 3, 1:37 PM EDT	Mesoscale Discussion	SPC	2 hr
Jun 3, 2:47 PM EDT	Special Weather Statement	PHI	118 min
Jun 3, 6:05 PM EDT	Special Weather Statement	PHI	85 min
Jun 3, 7:20 PM EDT	Special Weather Statement	PHI	85 min
Jun 3, 8:10 PM EDT	Special Weather Statement	PHI	95 min
Jun 4, 4:24 AM EDT	Coastal Flood Advisory	PHI	23 hr
Jun 5, 3:44 AM EDT	Coastal Flood Advisory	PHI	31 hr
Jun 6, 5:11 AM EDT	Coastal Flood Statement	PHI	6 hr
Jun 6, 10:51 AM EDT	Coastal Flood Advisory	PHI	23 hr
Jun 7, 4:51 AM EDT	Coastal Flood Statement	PHI	23 hr
Jun 12, 10:17 PM EDT	Areal Flood Advisory	PHI	106 min
Jun 15, 9:26 PM EDT	Coastal Flood Statement	PHI	6 hr
Jun 18, 3:19 AM EDT	Excessive Heat Watch	PHI	12 hr
Jun 18, 3:26 PM EDT	Excessive Heat Warning	PHI	4 days
Jun 22, 12:18 PM EDT	Mesoscale Discussion	SPC	2 hr
Jun 22, 1:41 PM EDT	Severe Thunderstorm Watch	SPC	7 hr
Jun 22, 4:33 PM EDT	Mesoscale Discussion	SPC	87 min
Jun 22, 6:13 PM EDT	Special Weather Statement	PHI	62 min
Jun 22, 6:16 PM EDT	Special Weather Statement	PHI	119 min
Jun 22, 6:42 PM EDT	Mesoscale Discussion	SPC	63 min
Jun 22, 7:02 PM EDT	Areal Flood Advisory	PHI	102 min
Jun 22, 7:04 PM EDT	Severe Thunderstorm Warning	PHI	56 min
Jun 25, 3:44 AM EDT	Mesoscale Discussion	SPC	2 hr
Jun 25, 6:21 AM EDT	Mesoscale Discussion	SPC	24 min
Jun 25, 6:39 AM EDT	Severe Thunderstorm Watch	SPC	7 hr
Jun 26, 3:42 PM EDT	Excessive Heat Watch	PHI	36 hr
Jun 28, 3:59 AM EDT	Excessive Heat Warning	PHI	4 days
Jun 29, 3:41 AM EDT	Mesoscale Discussion	SPC	94 min
Jun 29, 3:51 AM EDT	Special Weather Statement	PHI	54 min
Jun 29, 4:34 AM EDT	Severe Thunderstorm Watch	SPC	3 hr
Jun 29, 5:00 AM EDT	Severe Thunderstorm Warning	PHI	75 min
Jun 29, 10:54 PM EDT	Special Weather Statement	PHI	51 min
Jun 29, 11:51 PM EDT	Special Weather Statement	PHI	54 min
Jul 1, 12:11 PM EDT	Mesoscale Discussion	SPC	64 min
Jul 3, 3:47 AM EDT	Excessive Heat Watch	PHI	12 hr
Jul 3, 3:28 PM EDT	Excessive Heat Warning	PHI	5 days
Jul 4, 3:39 AM EDT	Excessive Heat Watch	PHI	12 hr
Jul 7, 11:19 AM EDT	Mesoscale Discussion	SPC	86 min
Jul 7, 5:43 PM EDT	Mesoscale Discussion	SPC	62 min
Jul 7, 5:57 PM EDT	Severe Thunderstorm Warning	PHI	63 min
Jul 7, 6:14 PM EDT	Severe Thunderstorm Watch	SPC	3 hr
Jul 7, 6:58 PM EDT	Severe Thunderstorm Warning	PHI	48 min
Jul 7, 9:05 PM EDT	Severe Thunderstorm Warning	PHI	32 min
Jul 14, 3:39 AM EDT	Excessive Heat Watch	PHI	36 hr
Jul 15, 3:44 PM EDT	Excessive Heat Warning	PHI	4 days
Jul 15, 8:58 PM EDT	Special Weather Statement	PHI	62 min
Jul 18, 10:25 AM EDT	Mesoscale Discussion	SPC	2 hr
Jul 18, 12:41 PM EDT	Severe Thunderstorm Watch	SPC	8 hr
Jul 18, 3:44 PM EDT	Mesoscale Discussion	SPC	91 min
Jul 19, 6:53 PM EDT	Mesoscale Discussion	SPC	97 min
Jul 20, 5:03 AM EDT	Areal Flood Advisory	PHI	105 min
Jul 23, 1:24 PM EDT	Severe Thunderstorm Watch	SPC	10 hr
Jul 23, 5:56 PM EDT	Special Weather Statement	PHI	64 min
Jul 25, 3:09 PM EDT	Excessive Heat Warning	PHI	51 hr
Jul 26, 3:37 PM EDT	Mesoscale Discussion	SPC	113 min
Jul 26, 3:57 PM EDT	Severe Thunderstorm Watch	SPC	6 hr
Jul 26, 6:04 PM EDT	Mesoscale Discussion	SPC	86 min
Jul 26, 6:46 PM EDT	Severe Thunderstorm Warning	PHI	89 min
Jul 26, 7:28 PM EDT	Mesoscale Discussion	SPC	92 min
Jul 28, 12:26 PM EDT	Mesoscale Discussion	SPC	2 hr
Jul 28, 1:36 PM EDT	Severe Thunderstorm Watch	SPC	8 hr
Jul 28, 4:18 PM EDT	Mesoscale Discussion	SPC	87 min
Jul 28, 5:06 PM EDT	Special Weather Statement	PHI	54 min
Jul 28, 8:41 PM EDT	Special Weather Statement	PHI	64 min
Jul 31, 9:51 PM EDT	Coastal Flood Statement	PHI	5 hr
Aug 1, 3:31 PM EDT	Coastal Flood Statement	PHI	11 hr
Aug 1, 5:43 PM EDT	Special Weather Statement	PHI	62 min
Aug 1, 6:30 PM EDT	Areal Flood Advisory	PHI	64 min
Aug 2, 2:58 PM EDT	Heat Advisory	PHI	28 hr
Aug 3, 4:15 PM EDT	Special Weather Statement	PHI	60 min
Aug 3, 5:12 PM EDT	Severe Thunderstorm Warning	PHI	63 min
Aug 3, 5:46 PM EDT	Areal Flood Advisory	PHI	101 min
Aug 5, 2:49 PM EDT	Mesoscale Discussion	SPC	86 min
Aug 5, 3:36 PM EDT	Severe Thunderstorm Watch	SPC	5 hr
Aug 5, 5:22 PM EDT	Severe Thunderstorm Warning	PHI	68 min
Aug 5, 6:16 PM EDT	Severe Thunderstorm Warning	PHI	74 min
Aug 8, 6:27 AM EDT	Dense Fog Advisory	PHI	4 hr
Aug 10, 8:21 AM EDT	Mesoscale Discussion	SPC	2 hr
Aug 10, 8:41 AM EDT	Special Weather Statement	PHI	94 min
Aug 10, 8:43 AM EDT	Special Weather Statement	PHI	92 min
Aug 10, 9:08 AM EDT	Areal Flood Advisory	PHI	3 hr
Aug 10, 10:05 AM EDT	Special Weather Statement	PHI	115 min
Aug 10, 7:31 PM EDT	Mesoscale Discussion	SPC	119 min
Aug 14, 9:22 AM EDT	Severe Thunderstorm Warning	PHI	38 min
Aug 14, 9:44 AM EDT	Special Weather Statement	PHI	91 min
Aug 14, 9:56 AM EDT	Areal Flood Advisory	PHI	108 min
Aug 14, 10:07 AM EDT	Special Weather Statement	PHI	83 min
Aug 14, 4:12 PM EDT	Special Weather Statement	PHI	63 min
Aug 14, 4:15 PM EDT	Special Weather Statement	PHI	60 min
Aug 27, 8:25 AM EDT	Special Weather Statement	PHI	65 min
Sep 3, 12:24 AM EDT	Areal Flood Advisory	PHI	3 hr
Sep 3, 12:58 AM EDT	Flash Flood Warning	PHI	5 hr
Sep 3, 4:19 AM EDT	River Flood Warning	PHI	91 min
Sep 3, 8:05 AM EDT	Areal Flood Advisory	PHI	3 hr
Sep 3, 8:23 AM EDT	Flash Flood Warning	PHI	82 min
Sep 3, 9:15 AM EDT	Flash Flood Warning	PHI	3 hr
Sep 3, 3:00 PM EDT	Flash Flood Watch	PHI	49 hr
Sep 3, 5:27 PM EDT	Areal Flood Warning	PHI	3 hr
Sep 3, 6:41 PM EDT	River Flood Warning	PHI	2 hr
Sep 4, 12:15 PM EDT	Areal Flood Warning	PHI	106 min
Sep 4, 1:47 PM EDT	Flash Flood Warning	PHI	3 hr
Sep 4, 2:22 PM EDT	Areal Flood Advisory	PHI	4 hr
Sep 4, 3:11 PM EDT	River Flood Warning	PHI	50 min
Sep 4, 4:37 PM EDT	Areal Flood Advisory	PHI	3 hr
Sep 8, 12:15 PM EDT	Severe Thunderstorm Watch	SPC	9 hr
Sep 8, 2:12 PM EDT	Mesoscale Discussion	SPC	93 min
Sep 8, 4:07 PM EDT	Special Weather Statement	PHI	83 min
Sep 8, 4:22 PM EDT	Mesoscale Discussion	SPC	53 min
Sep 17, 2:54 PM EDT	Wind Advisory	PHI	30 hr
Sep 18, 4:13 AM EDT	Coastal Flood Advisory	PHI	21 hr
Sep 18, 11:14 AM EDT	Mesoscale Discussion	SPC	91 min
Sep 18, 11:19 AM EDT	Mesoscale Discussion	SPC	86 min
Sep 18, 12:10 PM EDT	Tornado Watch	SPC	9 hr
Sep 18, 1:56 PM EDT	Mesoscale Discussion	SPC	64 min
Sep 18, 4:19 PM EDT	Severe Thunderstorm Warning	PHI	56 min
Sep 18, 4:21 PM EDT	Mesoscale Discussion	SPC	114 min
Sep 18, 5:01 PM EDT	Severe Thunderstorm Warning	PHI	59 min
Sep 18, 5:12 PM EDT	Areal Flood Advisory	PHI	63 min
Sep 18, 5:12 PM EDT	Severe Thunderstorm Warning	PHI	78 min
Sep 22, 3:09 PM EDT	Mesoscale Discussion	SPC	2 hr
Sep 22, 6:02 PM EDT	Special Weather Statement	PHI	88 min
Sep 22, 7:02 PM EDT	Special Weather Statement	PHI	58 min
Sep 22, 7:39 PM EDT	Severe Thunderstorm Warning	PHI	66 min
Sep 27, 5:41 AM EDT	Special Weather Statement	PHI	79 min
Oct 3, 12:26 AM EDT	Dense Fog Advisory	PHI	10 hr
Oct 12, 2:40 PM EDT	Frost Advisory	PHI	17 hr
Oct 15, 2:02 PM EDT	Special Weather Statement	PHI	88 min
Oct 15, 3:25 PM EDT	Special Weather Statement	PHI	80 min
Oct 19, 4:15 AM EDT	Coastal Flood Statement	PHI	14 hr
Oct 19, 9:24 PM EDT	Special Weather Statement	PHI	96 min
Oct 19, 10:00 PM EDT	Areal Flood Advisory	PHI	63 min
Oct 27, 4:51 AM EDT	Flood Watch	PHI	71 hr
Oct 27, 5:05 AM EDT	High Wind Watch	PHI	24 hr
Oct 27, 6:47 AM EDT	Coastal Flood Watch	PHI	23 hr
Oct 27, 5:08 PM EDT	Coastal Flood Warning	PHI	64 hr
Oct 28, 4:35 AM EDT	High Wind Warning	PHI	52 hr
Oct 29, 7:40 AM EDT	Areal Flood Warning	PHI	23 hr
Oct 29, 11:15 AM EDT	River Flood Warning	PHI	33 hr
Oct 29, 11:29 AM EDT	River Flood Warning	PHI	19 hr
Oct 29, 4:28 PM EDT	Special Weather Statement	PHI	2 hr
Oct 30, 6:03 AM EDT	Coastal Flood Advisory	PHI	20 hr
Oct 30, 8:48 AM EDT	Wind Advisory	PHI	3 hr
Nov 4, 4:02 AM EST	Freeze Watch	PHI	11 hr
Nov 4, 2:56 PM EST	Freeze Warning	PHI	13 hr
Nov 5, 3:20 PM EST	High Wind Watch	PHI	24 hr
Nov 6, 2:52 PM EST	Coastal Flood Advisory	PHI	43 hr
Nov 6, 3:41 PM EST	Wind Advisory	PHI	27 hr
Nov 7, 3:40 AM EST	Winter Storm Warning	PHI	12 hr
Nov 7, 12:55 PM EST	Mesoscale Discussion	SPC	3 hr
Nov 12, 2:42 AM EST	Dense Fog Advisory	PHI	7 hr
Nov 13, 1:17 AM EST	Special Weather Statement	PHI	88 min
Nov 13, 2:36 AM EST	Special Weather Statement	PHI	84 min
Dec 1, 7:09 PM EST	Dense Fog Advisory	PHI	14 hr
Dec 9, 7:23 PM EST	Dense Fog Advisory	PHI	14 hr
Dec 16, 8:41 PM EST	Dense Fog Advisory	PHI	16 hr
Dec 17, 3:27 PM EST	Dense Fog Advisory	PHI	12 hr
Dec 18, 1:19 PM EST	Special Weather Statement	PHI	56 min
Dec 20, 3:25 PM EST	Coastal Flood Advisory	PHI	25 hr
Dec 20, 9:11 PM EST	Wind Advisory	PHI	12 hr
Dec 21, 12:27 AM EST	Coastal Flood Warning	PHI	11 hr
Dec 21, 5:17 AM EST	Areal Flood Warning	PHI	4 hr
Dec 21, 7:15 AM EST	River Flood Warning	PHI	4 hr
Dec 21, 9:24 AM EST	Areal Flood Warning	PHI	4 hr
Dec 21, 12:08 PM EST	River Flood Warning	PHI	5 hr
Dec 21, 3:16 PM EST	Wind Advisory	PHI	27 hr
Dec 25, 3:03 PM EST	Flood Watch	PHI	36 hr
Dec 26, 2:45 PM EST	Coastal Flood Advisory	PHI	19 hr
Dec 26, 7:55 PM EST	Areal Flood Advisory	PHI	6 hr
Dec 28, 3:49 AM EST	Winter Weather Advisory	PHI	39 hr
Dec 30, 9:53 AM EST	Wind Advisory	PHI	6 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	15
Severe Thunderstorm Watch	11
Tornado Watch	2
Mesoscale Discussion	34
Special Weather Statement	55
Flooding
Areal Flood Warning	6
Flash Flood Warning	5
River Flood Warning	7
Flash Flood Watch	3
Flood Watch	3
Areal Flood Advisory	19
Winter
Winter Storm Warning	1
Winter Weather Advisory	4
Heat
Excessive Heat Warning	6
Excessive Heat Watch	6
Heat Advisory	1
Cold
Freeze Warning	2
Freeze Watch	2
Frost Advisory	3
Wind and dust
High Wind Warning	1
High Wind Watch	2
Wind Advisory	13
Fire
Red Flag Warning	8
Fire Weather Watch	7
Fog and smoke
Dense Fog Advisory	10
Coast and beach
Coastal Flood Warning	3
Coastal Flood Watch	1
Coastal Flood Advisory	13
Coastal Flood Statement	8

The busiest days

Days with the most alerts issued, by UTC date.

Nearby

Alerts in force now Tornadoes on record Forecast The radar archive 2011 2013

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.