Alert archive / North Carolina / Johnston County

Weather alerts in Johnston County, North Carolina, 2019

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

Johnston County and its neighbors

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

Alerts: 205
Warnings: 72
Watches: 19
Advisories: 30
Busiest month: July45 alerts
Busiest day: April 19, 201914 alerts

Over time

By month

Warning verification

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

3 of 7 tornado warnings covering Johnston County in 2019 had a tornado report inside them; 1 of 1 tornado reports fell inside a warning, on average 9 minutes after it went out.

Johnston County, 2019

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
Tornado warnings	7	3	57%	1	100%	9 min
Severe thunderstorm warnings	46	33	28%	43	86%	18 min
Flash flood warnings	3	3	0%	6	83%	73 min

Each office's whole area, 2019

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
NWS Raleigh, NC: tornado warnings	51	12	76%	24	71%	11 min
NWS Raleigh, NC: severe thunderstorm warnings	252	192	24%	676	81%	21 min
NWS Raleigh, NC: flash flood warnings	29	21	28%	79	89%	75 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 1, 2:30 PM EST	River Flood Warning	RAH	5 days
Jan 20, 2:38 AM EST	Special Weather Statement	RAH	82 min
Jan 24, 5:15 AM EST	Special Weather Statement	RAH	90 min
Feb 12, 7:28 PM EST	Special Weather Statement	RAH	77 min
Feb 22, 9:03 AM EST	River Flood Warning	RAH	20 days
Feb 22, 2:53 PM EST	River Flood Warning	RAH	64 hr
Feb 27, 12:23 PM EST	River Flood Warning	RAH	3 days
Feb 28, 2:57 AM EST	Dense Fog Advisory	RAH	7 hr
Mar 4, 7:56 AM EST	River Flood Warning	RAH	14 hr
Mar 15, 3:36 PM EDT	Mesoscale Discussion	SPC	2 hr
Apr 7, 3:35 AM EDT	Dense Fog Advisory	RAH	7 hr
Apr 8, 5:23 PM EDT	Mesoscale Discussion	SPC	97 min
Apr 8, 5:30 PM EDT	Severe Thunderstorm Warning	RAH	45 min
Apr 8, 5:43 PM EDT	Severe Thunderstorm Watch	SPC	4 hr
Apr 8, 6:10 PM EDT	Severe Thunderstorm Warning	RAH	38 min
Apr 8, 6:44 PM EDT	Severe Thunderstorm Warning	RAH	43 min
Apr 8, 8:35 PM EDT	Special Weather Statement	RAH	85 min
Apr 8, 8:40 PM EDT	Mesoscale Discussion	SPC	65 min
Apr 9, 8:11 AM EDT	River Flood Warning	RAH	13 hr
Apr 9, 1:10 PM EDT	River Flood Warning	RAH	32 hr
Apr 12, 7:00 PM EDT	Special Weather Statement	RAH	75 min
Apr 13, 6:26 AM EDT	River Flood Warning	RAH	14 days
Apr 13, 10:53 AM EDT	Flash Flood Watch	RAH	7 hr
Apr 13, 3:23 PM EDT	Mesoscale Discussion	SPC	2 hr
Apr 13, 5:14 PM EDT	Special Weather Statement	RAH	61 min
Apr 13, 9:20 PM EDT	River Flood Warning	RAH	29 hr
Apr 14, 2:16 PM EDT	Tornado Watch	SPC	8 hr
Apr 14, 5:43 PM EDT	Mesoscale Discussion	SPC	2 hr
Apr 14, 7:31 PM EDT	Areal Flood Advisory	RAH	27 hr
Apr 15, 12:41 AM EDT	Tornado Watch	SPC	5 hr
Apr 15, 1:16 AM EDT	Severe Thunderstorm Warning	RAH	44 min
Apr 15, 2:18 AM EDT	Mesoscale Discussion	SPC	117 min
Apr 17, 2:32 PM EDT	River Flood Warning	RAH	44 hr
Apr 19, 4:07 AM EDT	Wind Advisory	RAH	14 hr
Apr 19, 10:54 AM EDT	Mesoscale Discussion	SPC	96 min
Apr 19, 11:21 AM EDT	Special Weather Statement	RAH	24 min
Apr 19, 11:26 AM EDT	Severe Thunderstorm Warning	RAH	34 min
Apr 19, 11:50 AM EDT	Severe Thunderstorm Warning	RAH	40 min
Apr 19, 12:21 PM EDT	Special Weather Statement	RAH	39 min
Apr 19, 12:29 PM EDT	Mesoscale Discussion	SPC	2 hr
Apr 19, 12:33 PM EDT	Severe Thunderstorm Warning	RAH	42 min
Apr 19, 1:17 PM EDT	Tornado Watch	SPC	11 hr
Apr 19, 3:18 PM EDT	Mesoscale Discussion	SPC	87 min
Apr 19, 4:31 PM EDT	Severe Thunderstorm Warning	RAH	59 min
Apr 19, 4:35 PM EDT	Mesoscale Discussion	SPC	55 min
Apr 19, 5:20 PM EDT	Tornado Warning	RAH	25 min
Apr 19, 5:27 PM EDT	Severe Thunderstorm Warning	RAH	63 min
Apr 26, 4:17 PM EDT	Severe Thunderstorm Warning	RAH	43 min
Apr 26, 4:26 PM EDT	Special Weather Statement	RAH	49 min
May 4, 5:51 PM EDT	Mesoscale Discussion	SPC	84 min
May 4, 8:22 PM EDT	Special Weather Statement	RAH	38 min
May 5, 2:33 PM EDT	Mesoscale Discussion	SPC	117 min
May 13, 10:14 AM EDT	Mesoscale Discussion	SPC	2 hr
May 13, 10:22 AM EDT	Tornado Warning	RAH	21 min
May 13, 10:35 AM EDT	Severe Thunderstorm Warning	RAH	40 min
May 13, 10:42 AM EDT	Severe Thunderstorm Watch	SPC	7 hr
May 13, 1:26 PM EDT	Severe Thunderstorm Warning	RAH	49 min
May 13, 1:55 PM EDT	Tornado Warning	RAH	35 min
May 13, 1:59 PM EDT	Mesoscale Discussion	SPC	91 min
May 30, 6:20 PM EDT	Special Weather Statement	RAH	55 min
May 30, 7:14 PM EDT	Special Weather Statement	RAH	61 min
May 31, 12:07 PM EDT	Mesoscale Discussion	SPC	113 min
May 31, 1:29 PM EDT	Severe Thunderstorm Watch	SPC	10 hr
May 31, 4:43 PM EDT	Mesoscale Discussion	SPC	62 min
May 31, 6:21 PM EDT	Severe Thunderstorm Warning	RAH	39 min
May 31, 6:43 PM EDT	Severe Thunderstorm Warning	RAH	62 min
May 31, 7:08 PM EDT	Special Weather Statement	RAH	67 min
May 31, 7:19 PM EDT	Severe Thunderstorm Warning	RAH	56 min
May 31, 7:22 PM EDT	Mesoscale Discussion	SPC	83 min
May 31, 8:13 PM EDT	Severe Thunderstorm Warning	RAH	47 min
May 31, 9:55 PM EDT	Mesoscale Discussion	SPC	95 min
Jun 5, 12:52 PM EDT	Mesoscale Discussion	SPC	113 min
Jun 5, 2:33 PM EDT	Severe Thunderstorm Watch	SPC	5 hr
Jun 5, 3:53 PM EDT	Severe Thunderstorm Warning	RAH	51 min
Jun 5, 4:31 PM EDT	Special Weather Statement	RAH	59 min
Jun 5, 4:43 PM EDT	Special Weather Statement	RAH	47 min
Jun 5, 5:13 PM EDT	Severe Thunderstorm Warning	RAH	47 min
Jun 5, 5:33 PM EDT	Mesoscale Discussion	SPC	57 min
Jun 5, 7:01 PM EDT	Special Weather Statement	RAH	44 min
Jun 8, 10:05 PM EDT	Special Weather Statement	RAH	40 min
Jun 9, 1:44 AM EDT	River Flood Warning	RAH	11 hr
Jun 9, 10:34 AM EDT	River Flood Warning	RAH	14 hr
Jun 9, 5:34 PM EDT	Special Weather Statement	RAH	86 min
Jun 17, 5:28 PM EDT	Special Weather Statement	RAH	47 min
Jun 17, 5:33 PM EDT	Severe Thunderstorm Warning	RAH	45 min
Jun 20, 12:23 PM EDT	Mesoscale Discussion	SPC	2 hr
Jun 20, 1:49 PM EDT	Severe Thunderstorm Watch	SPC	6 hr
Jun 20, 2:33 PM EDT	Special Weather Statement	RAH	57 min
Jun 20, 3:15 PM EDT	Severe Thunderstorm Warning	RAH	24 min
Jun 20, 4:49 PM EDT	Special Weather Statement	RAH	56 min
Jun 20, 5:42 PM EDT	Severe Thunderstorm Warning	RAH	63 min
Jun 20, 6:27 PM EDT	Severe Thunderstorm Warning	RAH	15 min
Jun 29, 3:29 PM EDT	Special Weather Statement	RAH	61 min
Jun 30, 5:23 PM EDT	Severe Thunderstorm Warning	RAH	52 min
Jun 30, 5:55 PM EDT	Mesoscale Discussion	SPC	2 hr
Jun 30, 6:18 PM EDT	Special Weather Statement	RAH	57 min
Jul 4, 2:38 PM EDT	Special Weather Statement	RAH	67 min
Jul 4, 4:08 PM EDT	Severe Thunderstorm Warning	RAH	40 min
Jul 7, 12:57 PM EDT	Special Weather Statement	RAH	33 min
Jul 7, 1:29 PM EDT	Mesoscale Discussion	SPC	2 hr
Jul 8, 1:58 PM EDT	Mesoscale Discussion	SPC	3 hr
Jul 8, 4:17 PM EDT	Areal Flood Advisory	RAH	118 min
Jul 11, 7:08 PM EDT	Severe Thunderstorm Warning	RAH	52 min
Jul 11, 7:35 PM EDT	Special Weather Statement	RAH	55 min
Jul 11, 8:43 PM EDT	Special Weather Statement	RAH	62 min
Jul 11, 10:08 PM EDT	Special Weather Statement	RAH	67 min
Jul 12, 1:37 AM EDT	Special Weather Statement	RAH	53 min
Jul 12, 4:29 AM EDT	Areal Flood Advisory	RAH	2 hr
Jul 12, 5:31 AM EDT	Flash Flood Warning	RAH	3 hr
Jul 13, 3:43 AM EDT	Heat Advisory	RAH	15 hr
Jul 13, 12:53 PM EDT	Mesoscale Discussion	SPC	3 hr
Jul 14, 4:03 AM EDT	Heat Advisory	RAH	15 hr
Jul 15, 4:01 AM EDT	Heat Advisory	RAH	15 hr
Jul 16, 3:33 AM EDT	Heat Advisory	RAH	15 hr
Jul 16, 3:28 PM EDT	Mesoscale Discussion	SPC	3 hr
Jul 16, 3:45 PM EDT	Heat Advisory	RAH	28 hr
Jul 17, 3:53 PM EDT	Heat Advisory	RAH	27 hr
Jul 17, 4:57 PM EDT	Special Weather Statement	RAH	48 min
Jul 17, 5:40 PM EDT	Special Weather Statement	RAH	65 min
Jul 17, 11:33 PM EDT	Special Weather Statement	RAH	42 min
Jul 17, 11:40 PM EDT	Severe Thunderstorm Warning	RAH	35 min
Jul 18, 12:11 AM EDT	Severe Thunderstorm Warning	RAH	49 min
Jul 18, 12:22 AM EDT	Severe Thunderstorm Warning	RAH	38 min
Jul 18, 4:26 AM EDT	Excessive Heat Watch	RAH	59 hr
Jul 18, 4:26 AM EDT	Heat Advisory	RAH	39 hr
Jul 18, 9:03 PM EDT	Special Weather Statement	RAH	42 min
Jul 18, 9:21 PM EDT	Severe Thunderstorm Warning	RAH	39 min
Jul 18, 9:44 PM EDT	Severe Thunderstorm Warning	RAH	23 min
Jul 19, 2:45 PM EDT	Excessive Heat Warning	RAH	57 hr
Jul 22, 9:42 AM EDT	Heat Advisory	RAH	9 hr
Jul 22, 5:28 PM EDT	Severe Thunderstorm Warning	RAH	32 min
Jul 22, 5:42 PM EDT	Special Weather Statement	RAH	63 min
Jul 22, 7:57 PM EDT	Special Weather Statement	RAH	63 min
Jul 23, 10:08 AM EDT	Flash Flood Watch	RAH	7 hr
Jul 23, 12:01 PM EDT	Mesoscale Discussion	SPC	119 min
Jul 23, 12:31 PM EDT	Severe Thunderstorm Warning	RAH	33 min
Jul 23, 1:30 PM EDT	Severe Thunderstorm Watch	SPC	7 hr
Jul 23, 2:28 PM EDT	Severe Thunderstorm Warning	RAH	62 min
Jul 23, 2:59 PM EDT	Tornado Warning	RAH	31 min
Jul 23, 3:23 PM EDT	Severe Thunderstorm Warning	RAH	52 min
Jul 23, 3:59 PM EDT	Mesoscale Discussion	SPC	2 hr
Aug 1, 3:17 PM EDT	Severe Thunderstorm Warning	RAH	28 min
Aug 1, 7:25 PM EDT	Special Weather Statement	RAH	50 min
Aug 2, 6:43 PM EDT	Areal Flood Advisory	RAH	110 min
Aug 4, 8:23 PM EDT	Areal Flood Advisory	RAH	52 min
Aug 7, 12:50 PM EDT	Mesoscale Discussion	SPC	85 min
Aug 7, 1:53 PM EDT	Severe Thunderstorm Watch	SPC	6 hr
Aug 7, 3:25 PM EDT	Mesoscale Discussion	SPC	65 min
Aug 8, 12:18 AM EDT	Severe Thunderstorm Warning	RAH	42 min
Aug 8, 12:52 AM EDT	Severe Thunderstorm Warning	RAH	53 min
Aug 8, 1:41 AM EDT	Special Weather Statement	RAH	64 min
Aug 13, 2:02 PM EDT	Mesoscale Discussion	SPC	2 hr
Aug 13, 2:58 PM EDT	Severe Thunderstorm Watch	SPC	5 hr
Aug 13, 4:30 PM EDT	Mesoscale Discussion	SPC	60 min
Aug 13, 6:21 PM EDT	Severe Thunderstorm Warning	RAH	39 min
Aug 13, 7:03 PM EDT	Severe Thunderstorm Warning	RAH	42 min
Aug 14, 10:02 PM EDT	Areal Flood Advisory	RAH	112 min
Aug 15, 4:34 PM EDT	Mesoscale Discussion	SPC	116 min
Aug 15, 6:26 PM EDT	Special Weather Statement	RAH	49 min
Aug 15, 6:40 PM EDT	Severe Thunderstorm Warning	RAH	43 min
Aug 19, 4:25 PM EDT	Severe Thunderstorm Warning	RAH	65 min
Aug 19, 5:04 PM EDT	Areal Flood Advisory	RAH	71 min
Aug 19, 5:31 PM EDT	Areal Flood Advisory	RAH	42 min
Aug 19, 5:33 PM EDT	Severe Thunderstorm Warning	RAH	18 min
Aug 21, 6:16 PM EDT	Mesoscale Discussion	SPC	119 min
Aug 21, 8:49 PM EDT	Special Weather Statement	RAH	71 min
Aug 22, 6:53 PM EDT	Severe Thunderstorm Warning	RAH	82 min
Aug 23, 2:06 PM EDT	Special Weather Statement	RAH	54 min
Aug 23, 2:14 PM EDT	Mesoscale Discussion	SPC	2 hr
Aug 23, 3:15 PM EDT	Special Weather Statement	RAH	60 min
Aug 23, 4:16 PM EDT	Special Weather Statement	RAH	59 min
Aug 23, 6:00 PM EDT	Mesoscale Discussion	SPC	30 min
Sep 3, 11:17 AM EDT	Tropical Storm Watch	RAH	24 hr
Sep 4, 3:40 AM EDT	Flash Flood Watch	RAH	54 hr
Sep 4, 11:05 AM EDT	Tropical Storm Warning	RAH	48 hr
Sep 5, 7:28 AM EDT	Tornado Watch	SPC	11 hr
Sep 5, 1:52 PM EDT	Tornado Warning	RAH	16 min
Sep 5, 2:21 PM EDT	Areal Flood Advisory	RAH	3 hr
Sep 5, 3:37 PM EDT	Special Weather Statement	RAH	23 min
Sep 5, 4:10 PM EDT	Flash Flood Warning	RAH	5 hr
Sep 5, 4:22 PM EDT	Tornado Warning	RAH	24 min
Sep 5, 4:45 PM EDT	Mesoscale Discussion	SPC	2 hr
Sep 5, 9:30 PM EDT	Flash Flood Warning	RAH	12 hr
Sep 11, 6:10 AM EDT	Dense Fog Advisory	RAH	4 hr
Sep 16, 5:16 AM EDT	Dense Fog Advisory	RAH	5 hr
Sep 27, 8:18 PM EDT	Severe Thunderstorm Warning	RAH	42 min
Oct 13, 9:15 PM EDT	Special Weather Statement	RAH	60 min
Oct 22, 5:29 PM EDT	Special Weather Statement	RAH	61 min
Oct 22, 5:40 PM EDT	Tornado Warning	RAH	52 min
Oct 22, 5:58 PM EDT	Mesoscale Discussion	SPC	92 min
Oct 31, 3:39 PM EDT	Tornado Watch	SPC	7 hr
Oct 31, 6:36 PM EDT	Mesoscale Discussion	SPC	114 min
Oct 31, 8:58 PM EDT	Severe Thunderstorm Warning	RAH	26 min
Oct 31, 8:59 PM EDT	Severe Thunderstorm Warning	RAH	46 min
Nov 1, 3:16 AM EDT	Frost Advisory	RAH	30 hr
Nov 2, 3:16 PM EDT	Frost Advisory	RAH	18 hr
Nov 3, 2:20 PM EST	Frost Advisory	RAH	18 hr
Nov 7, 3:41 AM EST	Freeze Watch	RAH	24 hr
Nov 8, 3:31 AM EST	Freeze Warning	RAH	29 hr
Dec 9, 5:21 AM EST	Dense Fog Advisory	RAH	6 hr
Dec 13, 4:51 PM EST	Areal Flood Advisory	RAH	4 hr
Dec 13, 9:51 PM EST	Areal Flood Advisory	RAH	3 hr
Dec 14, 12:40 AM EST	Areal Flood Advisory	RAH	2 hr
Dec 14, 1:01 PM EST	River Flood Warning	RAH	16 hr
Dec 27, 5:41 AM EST	Dense Fog Advisory	RAH	4 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	7
Severe Thunderstorm Watch	8
Tornado Watch	5
Mesoscale Discussion	39
Special Weather Statement	45
Flooding
Flash Flood Warning	3
River Flood Warning	13
Flash Flood Watch	3
Areal Flood Advisory	12
Heat
Excessive Heat Warning	1
Excessive Heat Watch	1
Heat Advisory	8
Cold
Freeze Warning	1
Freeze Watch	1
Frost Advisory	3
Wind and dust
Wind Advisory	1
Fog and smoke
Dense Fog Advisory	6
Tropical
Tropical Storm Warning	1
Tropical Storm Watch	1

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.