Alert archive / Pennsylvania / Berks County

Weather alerts in Berks County, Pennsylvania, 2018

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

Berks County and its neighbors

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

Alerts: 232
Warnings: 59
Watches: 29
Advisories: 80
Busiest month: July48 alerts
Busiest day: July 27, 201818 alerts

Over time

By month

Warning verification

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

0 of 3 tornado warnings covering Berks County in 2018 had a tornado report inside them.

Berks County, 2018

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
Tornado warnings	3	0	100%	0
Severe thunderstorm warnings	12	10	17%	39	79%	34 min
Flash flood warnings	16	9	44%	23	91%	102 min

Each office's whole area, 2018

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
NWS Philadelphia/Mount Holly: tornado warnings	10	2	80%	4	50%	6 min
NWS Philadelphia/Mount Holly: severe thunderstorm warnings	110	56	49%	277	81%	27 min
NWS Philadelphia/Mount Holly: flash flood warnings	113	54	52%	174	94%	92 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 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, 3:48 PM EST	Winter Weather Advisory	PHI	39 hr
Jan 13, 12:56 AM EST	Mesoscale Discussion	SPC	6 hr
Jan 15, 3:13 PM EST	Winter Weather Advisory	PHI	44 hr
Jan 23, 5:35 AM EST	Areal Flood Advisory	PHI	4 hr
Feb 3, 3:11 PM EST	Winter Weather Advisory	PHI	30 hr
Feb 4, 6:32 PM EST	Mesoscale Discussion	SPC	4 hr
Feb 6, 3:37 PM EST	Winter Weather Advisory	PHI	27 hr
Feb 7, 5:28 AM EST	Mesoscale Discussion	SPC	5 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, 10:51 AM EST	Areal Flood Advisory	PHI	8 hr
Feb 11, 6:47 PM EST	Dense Fog Advisory	PHI	8 hr
Feb 16, 3:51 AM EST	Winter Storm Watch	PHI	24 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 17, 7:41 PM EST	Winter Storm Warning	PHI	4 hr
Feb 19, 11:00 PM EST	Dense Fog Advisory	PHI	11 hr
Feb 25, 10:36 PM EST	Dense Fog Advisory	PHI	7 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, 12:43 AM EST	Areal Flood Advisory	PHI	4 hr
Mar 2, 4:37 AM EST	Areal Flood Advisory	PHI	3 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 19, 3:36 PM EDT	Winter Storm Watch	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 2, 3:47 AM EDT	Mesoscale Discussion	SPC	6 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 15, 3:41 PM EDT	Flash Flood Watch	PHI	20 hr
Apr 16, 6:30 AM EDT	Areal Flood Advisory	PHI	4 hr
Apr 17, 2:36 PM EDT	Freeze Warning	PHI	17 hr
Apr 19, 3:04 PM EDT	Freeze Warning	PHI	17 hr
Apr 20, 3:35 PM EDT	Freeze Warning	PHI	16 hr
Apr 28, 5:16 AM EDT	Dense Fog Advisory	PHI	4 hr
Apr 28, 3:11 PM EDT	Mesoscale Discussion	SPC	2 hr
Apr 28, 4:08 PM EDT	Special Weather Statement	PHI	37 min
Apr 28, 4:40 PM EDT	Special Weather Statement	PHI	50 min
May 2, 3:42 AM EDT	Red Flag Warning	PHI	17 hr
May 3, 6:03 PM EDT	Mesoscale Discussion	SPC	2 hr
May 3, 8:20 PM EDT	Special Weather Statement	PHI	40 min
May 4, 10:03 PM EDT	Special Weather Statement	PHI	27 min
May 10, 4:23 PM EDT	Mesoscale Discussion	SPC	97 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, 7:16 PM EDT	Mesoscale Discussion	SPC	59 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, 2:49 PM EDT	Special Weather Statement	PHI	56 min
May 15, 3:33 PM EDT	Mesoscale Discussion	SPC	117 min
May 15, 3:46 PM EDT	Severe Thunderstorm Warning	PHI	74 min
May 15, 4:24 PM EDT	Special Weather Statement	PHI	51 min
May 15, 4:26 PM EDT	Tornado Warning	PHI	19 min
May 15, 4:41 PM EDT	Severe Thunderstorm Warning	PHI	64 min
May 15, 5:14 PM EDT	Areal Flood Advisory	PHI	2 hr
May 16, 3:35 PM EDT	Flood Watch	PHI	3 days
May 19, 9:27 PM EDT	Dense Fog Advisory	PHI	9 hr
May 26, 11:38 PM EDT	Flash Flood Watch	PHI	23 hr
May 30, 4:43 AM EDT	Dense Fog Advisory	PHI	4 hr
Jun 5, 3:05 PM EDT	Mesoscale Discussion	SPC	2 hr
Jun 5, 6:02 PM EDT	Special Weather Statement	PHI	43 min
Jun 10, 8:29 PM EDT	Areal Flood Advisory	PHI	115 min
Jun 10, 9:52 PM EDT	Areal Flood Warning	PHI	18 hr
Jun 10, 11:33 PM EDT	Flash Flood Warning	PHI	5 hr
Jun 17, 2:39 PM EDT	Heat Advisory	PHI	29 hr
Jun 18, 5:55 PM EDT	Mesoscale Discussion	SPC	2 hr
Jun 18, 6:56 PM EDT	Special Weather Statement	PHI	64 min
Jun 18, 6:58 PM EDT	Severe Thunderstorm Warning	PHI	62 min
Jun 18, 7:41 PM EDT	Severe Thunderstorm Warning	PHI	64 min
Jun 24, 5:59 PM EDT	Special Weather Statement	PHI	31 min
Jun 24, 6:04 PM EDT	Special Weather Statement	PHI	26 min
Jun 24, 6:16 PM EDT	Mesoscale Discussion	SPC	119 min
Jun 24, 6:52 PM EDT	Special Weather Statement	PHI	38 min
Jun 28, 1:36 AM EDT	Areal Flood Advisory	PHI	4 hr
Jun 28, 4:01 AM EDT	Areal Flood Advisory	PHI	3 hr
Jun 29, 3:41 PM EDT	Excessive Heat Watch	PHI	23 hr
Jun 29, 3:41 PM EDT	Excessive Heat Warning	PHI	4 days
Jun 29, 3:41 PM EDT	Heat Advisory	PHI	5 days
Jul 4, 3:40 PM EDT	Severe Thunderstorm Warning	PHI	50 min
Jul 4, 4:25 PM EDT	Areal Flood Advisory	PHI	4 hr
Jul 4, 4:34 PM EDT	Special Weather Statement	PHI	56 min
Jul 4, 5:46 PM EDT	Special Weather Statement	PHI	29 min
Jul 4, 6:15 PM EDT	Special Weather Statement	PHI	45 min
Jul 4, 6:20 PM EDT	Flash Flood Warning	PHI	4 hr
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, 3:06 AM EDT	Special Weather Statement	PHI	54 min
Jul 6, 3:46 AM EDT	Areal Flood Advisory	PHI	5 hr
Jul 15, 9:44 AM EDT	Areal Flood Advisory	PHI	4 hr
Jul 15, 10:06 AM EDT	Flash Flood Warning	PHI	114 min
Jul 15, 10:57 AM EDT	Areal Flood Advisory	PHI	2 hr
Jul 17, 2:05 PM EDT	Areal Flood Advisory	PHI	3 hr
Jul 17, 2:27 PM EDT	Flash Flood Warning	PHI	4 hr
Jul 20, 2:44 PM EDT	Flash Flood Watch	PHI	34 hr
Jul 22, 5:43 PM EDT	Areal Flood Advisory	PHI	3 hr
Jul 22, 8:54 PM EDT	Flash Flood Warning	PHI	4 hr
Jul 23, 3:45 AM EDT	Flash Flood Watch	PHI	68 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, 1:34 AM EDT	Flash Flood Warning	PHI	8 hr
Jul 24, 4:56 AM EDT	Areal Flood Advisory	PHI	4 hr
Jul 24, 10:03 AM EDT	Areal Flood Advisory	PHI	2 hr
Jul 24, 1:24 PM EDT	Special Weather Statement	PHI	36 min
Jul 24, 1:40 PM EDT	Areal Flood Advisory	PHI	4 hr
Jul 25, 5:48 PM EDT	Special Weather Statement	PHI	27 min
Jul 25, 6:17 PM EDT	Special Weather Statement	PHI	43 min
Jul 25, 6:30 PM EDT	Special Weather Statement	PHI	2 hr
Jul 25, 7:04 PM EDT	Areal Flood Advisory	PHI	4 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, 1:02 PM EDT	Areal Flood Advisory	PHI	3 hr
Jul 27, 1:17 PM EDT	Severe Thunderstorm Watch	SPC	9 hr
Jul 27, 3:11 PM EDT	Severe Thunderstorm Warning	PHI	49 min
Jul 27, 3:47 PM EDT	Areal Flood Advisory	PHI	4 hr
Jul 27, 3:54 PM EDT	Flash Flood Warning	PHI	4 hr
Jul 27, 4:50 PM EDT	Mesoscale Discussion	SPC	55 min
Jul 27, 5:27 PM EDT	Areal Flood Advisory	PHI	4 hr
Jul 27, 6:06 PM EDT	Areal Flood Advisory	PHI	3 hr
Jul 27, 6:36 PM EDT	Special Weather Statement	PHI	39 min
Jul 27, 6:40 PM EDT	Severe Thunderstorm Warning	PHI	50 min
Jul 27, 7:03 PM EDT	Flash Flood Warning	PHI	3 hr
Jul 27, 7:06 PM EDT	Mesoscale Discussion	SPC	54 min
Jul 27, 7:37 PM EDT	Areal Flood Advisory	PHI	116 min
Jul 27, 7:49 PM EDT	Areal Flood Warning	PHI	4 hr
Jul 27, 7:49 PM EDT	Special Weather Statement	PHI	41 min
Jul 27, 7:53 PM EDT	Areal Flood Advisory	PHI	110 min
Aug 1, 3:15 PM EDT	Mesoscale Discussion	SPC	3 hr
Aug 1, 8:59 PM EDT	Special Weather Statement	PHI	61 min
Aug 1, 9:54 PM EDT	Special Weather Statement	PHI	66 min
Aug 1, 10:40 PM EDT	Severe Thunderstorm Warning	PHI	37 min
Aug 2, 3:31 AM EDT	Flash Flood Watch	PHI	55 hr
Aug 2, 11:46 AM EDT	Mesoscale Discussion	SPC	119 min
Aug 3, 7:37 PM EDT	Areal Flood Advisory	PHI	4 hr
Aug 3, 9:03 PM EDT	Flash Flood Warning	PHI	8 hr
Aug 3, 11:24 PM EDT	Areal Flood Advisory	PHI	6 hr
Aug 4, 1:15 AM EDT	Special Weather Statement	PHI	30 min
Aug 4, 1:47 AM EDT	Special Weather Statement	PHI	43 min
Aug 4, 4:54 AM EDT	Areal Flood Warning	PHI	7 hr
Aug 5, 3:05 PM EDT	Heat Advisory	PHI	27 hr
Aug 7, 12:19 PM EDT	Heat Advisory	PHI	6 hr
Aug 7, 5:32 PM EDT	Special Weather Statement	PHI	58 min
Aug 7, 6:25 PM EDT	Special Weather Statement	PHI	65 min
Aug 11, 2:25 AM EDT	Special Weather Statement	PHI	65 min
Aug 11, 3:24 AM EDT	Flash Flood Watch	PHI	20 hr
Aug 11, 3:26 AM EDT	Special Weather Statement	PHI	64 min
Aug 11, 4:17 AM EDT	Areal Flood Advisory	PHI	4 hr
Aug 11, 5:19 AM EDT	Flash Flood Warning	PHI	3 hr
Aug 11, 3:50 PM EDT	Areal Flood Advisory	PHI	115 min
Aug 12, 10:08 PM EDT	Flash Flood Watch	PHI	24 hr
Aug 13, 4:42 AM EDT	Areal Flood Advisory	PHI	4 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, 12:14 PM EDT	River Flood Warning	PHI	23 hr
Aug 13, 12:37 PM EDT	Areal Flood Warning	PHI	18 hr
Aug 17, 3:44 PM EDT	Severe Thunderstorm Watch	SPC	7 hr
Aug 17, 4:29 PM EDT	Special Weather Statement	PHI	46 min
Aug 17, 5:07 PM EDT	Special Weather Statement	PHI	53 min
Aug 17, 5:12 PM EDT	Special Weather Statement	PHI	33 min
Aug 17, 6:18 PM EDT	Special Weather Statement	PHI	27 min
Aug 17, 6:23 PM EDT	Severe Thunderstorm Warning	PHI	52 min
Aug 17, 6:40 PM EDT	Flash Flood Warning	PHI	2 hr
Aug 17, 7:09 PM EDT	Severe Thunderstorm Warning	PHI	51 min
Aug 18, 3:16 AM EDT	Flash Flood Watch	PHI	20 hr
Aug 21, 7:06 PM EDT	Mesoscale Discussion	SPC	84 min
Aug 21, 8:53 PM EDT	Areal Flood Advisory	PHI	5 hr
Aug 21, 10:16 PM EDT	Flash Flood Warning	PHI	7 hr
Aug 22, 5:14 AM EDT	Areal Flood Warning	PHI	4 hr
Aug 27, 2:58 AM EDT	Heat Advisory	PHI	65 hr
Aug 31, 10:09 AM EDT	Flash Flood Warning	PHI	7 hr
Aug 31, 1:22 PM EDT	Areal Flood Advisory	PHI	4 hr
Aug 31, 1:54 PM EDT	Areal Flood Advisory	PHI	4 hr
Aug 31, 3:59 PM EDT	Flash Flood Warning	PHI	4 hr
Aug 31, 5:13 PM EDT	Areal Flood Warning	PHI	7 hr
Aug 31, 8:00 PM EDT	Areal Flood Warning	PHI	4 hr
Sep 3, 3:02 AM EDT	Heat Advisory	PHI	4 days
Sep 3, 9:28 PM EDT	Special Weather Statement	PHI	47 min
Sep 8, 2:41 AM EDT	Areal Flood Warning	PHI	4 hr
Sep 8, 3:34 AM EDT	Flood Watch	PHI	60 hr
Sep 11, 6:20 PM EDT	Areal Flood Advisory	PHI	115 min
Sep 18, 9:27 AM EDT	Flash Flood Watch	PHI	6 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, 7:31 PM EDT	Areal Flood Advisory	PHI	106 min
Sep 27, 3:24 AM EDT	Flood Watch	PHI	27 hr
Sep 28, 12:10 AM EDT	Areal Flood Advisory	PHI	13 hr
Oct 2, 2:26 PM EDT	Mesoscale Discussion	SPC	2 hr
Oct 2, 2:55 PM EDT	Tornado Watch	SPC	8 hr
Oct 2, 4:43 PM EDT	Mesoscale Discussion	SPC	2 hr
Oct 2, 7:24 PM EDT	Mesoscale Discussion	SPC	81 min
Oct 2, 9:05 PM EDT	Areal Flood Advisory	PHI	4 hr
Oct 8, 5:17 AM EDT	Areal Flood Advisory	PHI	4 hr
Oct 11, 2:39 PM EDT	Areal Flood Advisory	PHI	4 hr
Oct 11, 9:43 PM EDT	Areal Flood Advisory	PHI	8 hr
Oct 17, 3:32 PM EDT	Freeze Watch	PHI	12 hr
Oct 18, 3:05 AM EDT	Frost Advisory	PHI	30 hr
Oct 18, 3:05 AM EDT	Freeze Warning	PHI	30 hr
Oct 21, 3:07 AM EDT	Frost Advisory	PHI	30 hr
Oct 21, 3:18 PM EDT	Freeze Warning	PHI	18 hr
Oct 24, 3:12 PM EDT	Frost Advisory	PHI	18 hr
Nov 2, 8:22 PM EDT	Areal Flood Advisory	PHI	4 hr
Nov 2, 9:28 PM EDT	Areal Flood Advisory	PHI	4 hr
Nov 2, 9:48 PM EDT	Special Weather Statement	PHI	27 min
Nov 2, 10:32 PM EDT	Tornado Warning	PHI	28 min
Nov 2, 10:45 PM EDT	Areal Flood Warning	PHI	13 hr
Nov 2, 10:47 PM EDT	Tornado Warning	PHI	43 min
Nov 2, 10:53 PM EDT	Flash Flood Warning	PHI	4 hr
Nov 2, 10:53 PM EDT	Severe Thunderstorm Warning	PHI	67 min
Nov 3, 12:20 AM EDT	Areal Flood Advisory	PHI	4 hr
Nov 3, 11:44 AM EDT	Areal Flood Warning	PHI	8 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 15, 12:21 PM EST	Winter Storm Warning	PHI	21 hr
Nov 15, 4:39 PM EST	Mesoscale Discussion	SPC	6 hr
Nov 16, 3:56 AM EST	Mesoscale Discussion	SPC	6 hr
Nov 23, 7:50 PM EST	Winter Weather Advisory	PHI	20 hr
Nov 24, 5:52 PM EST	Areal Flood Advisory	PHI	6 hr
Nov 27, 3:13 PM EST	Wind Advisory	PHI	27 hr
Dec 2, 8:24 AM EST	Dense Fog Advisory	PHI	21 hr
Dec 18, 3:16 PM EST	Flood Watch	PHI	3 days
Dec 21, 4:02 AM EST	Areal Flood Warning	PHI	4 hr
Dec 21, 4:27 AM EST	Areal Flood Warning	PHI	8 hr
Dec 21, 8:04 AM EST	Areal Flood Warning	PHI	7 hr
Dec 21, 12:15 PM EST	Areal Flood Warning	PHI	4 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	12
Tornado Warning	3
Severe Thunderstorm Watch	4
Tornado Watch	2
Mesoscale Discussion	28
Special Weather Statement	36
Flooding
Areal Flood Warning	14
Flash Flood Warning	16
River Flood Warning	1
Flash Flood Watch	12
Flood Watch	5
Areal Flood Advisory	47
Winter
Winter Storm Warning	4
Winter Storm Watch	3
Winter Weather Advisory	10
Heat
Excessive Heat Warning	1
Excessive Heat Watch	1
Heat Advisory	6
Cold
Freeze Warning	5
Freeze Watch	1
Frost Advisory	3
Wind Chill Advisory	1
Wind and dust
High Wind Warning	2
High Wind Watch	1
Wind Advisory	3
Fire
Red Flag Warning	1
Fog and smoke
Dense Fog Advisory	10

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. Warning verification from the Mesonet's Cow. Rebuilt daily.