Alert archive / Hawaii / Honolulu County

Weather alerts in Honolulu County, Hawaii, 2017

151 weather alerts in 2017, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.

Honolulu County and its neighbors

Each county as a circle sized by its count in 2017. Tap one for its archive.

Alerts: 151
Warnings: 27
Watches: 10
Advisories: 107
Busiest month: February25 alerts
Busiest day: February 11, 20179 alerts

Over time

By month

Warning verification

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

Honolulu County, 2017

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
Tornado warnings	0			0
Severe thunderstorm warnings	0			2	0%
Flash flood warnings	9	4	56%	6	83%	115 min

Each office's whole area, 2017

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
NWS Honolulu, HI: severe thunderstorm warnings	5	1	80%	4	50%	16 min
NWS Honolulu, HI: flash flood warnings	31	10	68%	25	84%	114 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, Hawaii-Aleutian Time. Each opens its own page with the text, the map, the radar and the sounding.

Issued	Product	Office	Lasted
Jan 1, 9:39 PM HST	Severe Thunderstorm Watch	SPC	59 days
Jan 3, 3:31 PM HST	High Surf Advisory	HFO	24 hr
Jan 6, 3:45 AM HST	High Surf Advisory	HFO	60 hr
Jan 11, 3:28 PM HST	High Surf Advisory	HFO	24 hr
Jan 12, 9:38 AM HST	High Surf Warning	HFO	48 hr
Jan 14, 9:21 AM HST	High Surf Advisory	HFO	18 hr
Jan 17, 3:43 PM HST	High Surf Warning	HFO	60 hr
Jan 17, 3:43 PM HST	High Surf Advisory	HFO	4 days
Jan 20, 3:40 PM HST	High Surf Advisory	HFO	54 hr
Jan 20, 3:42 PM HST	High Wind Watch	HFO	12 hr
Jan 21, 3:25 AM HST	High Wind Warning	HFO	37 hr
Jan 22, 10:37 AM HST	Wind Advisory	HFO	11 hr
Jan 22, 9:31 PM HST	High Surf Advisory	HFO	42 hr
Jan 23, 7:53 PM HST	High Surf Advisory	HFO	31 hr
Jan 25, 2:49 AM HST	High Surf Warning	HFO	31 hr
Jan 26, 9:30 AM HST	High Surf Advisory	HFO	18 hr
Jan 27, 3:33 PM HST	High Surf Advisory	HFO	36 hr
Jan 29, 3:13 AM HST	High Surf Warning	HFO	48 hr
Jan 29, 3:29 AM HST	Wind Advisory	HFO	48 hr
Jan 30, 3:17 AM HST	High Surf Advisory	HFO	39 hr
Jan 30, 3:57 PM HST	High Surf Advisory	HFO	26 hr
Jan 31, 9:44 AM HST	High Surf Warning	HFO	66 hr
Feb 1, 3:41 AM HST	High Surf Advisory	HFO	48 hr
Feb 3, 3:19 AM HST	High Surf Advisory	HFO	42 hr
Feb 4, 3:33 PM HST	Wind Advisory	HFO	56 hr
Feb 5, 4:25 PM HST	High Surf Advisory	HFO	4 days
Feb 6, 11:16 AM HST	Areal Flood Advisory	HFO	119 min
Feb 7, 3:30 AM HST	High Surf Warning	HFO	36 hr
Feb 10, 9:16 AM HST	Flash Flood Watch	HFO	42 hr
Feb 10, 3:27 PM HST	High Surf Advisory	HFO	24 hr
Feb 11, 5:08 AM HST	Areal Flood Advisory	HFO	6 hr
Feb 11, 5:53 AM HST	Special Weather Statement	HFO	22 min
Feb 11, 7:56 AM HST	Special Weather Statement	HFO	34 min
Feb 11, 10:28 AM HST	Flash Flood Warning	HFO	3 hr
Feb 11, 10:30 AM HST	Special Weather Statement	HFO	45 min
Feb 11, 12:17 PM HST	Special Weather Statement	HFO	58 min
Feb 11, 1:16 PM HST	Special Weather Statement	HFO	59 min
Feb 11, 1:26 PM HST	Flash Flood Warning	HFO	3 hr
Feb 13, 1:20 PM HST	Wind Advisory	HFO	26 hr
Feb 13, 3:28 PM HST	High Surf Warning	HFO	37 hr
Feb 14, 9:28 AM HST	High Surf Advisory	HFO	48 hr
Feb 18, 4:00 PM HST	High Surf Advisory	HFO	60 hr
Feb 24, 3:15 PM HST	High Surf Advisory	HFO	24 hr
Feb 27, 7:36 AM HST	Flash Flood Watch	HFO	68 hr
Feb 27, 2:25 PM HST	Areal Flood Advisory	HFO	3 hr
Feb 27, 2:48 PM HST	Areal Flood Advisory	HFO	3 hr
Feb 27, 8:23 PM HST	Areal Flood Advisory	HFO	3 hr
Feb 28, 5:47 PM HST	Areal Flood Advisory	HFO	3 hr
Feb 28, 7:13 PM HST	Flash Flood Warning	HFO	6 hr
Feb 28, 10:23 PM HST	Areal Flood Advisory	HFO	3 hr
Feb 28, 11:18 PM HST	Flash Flood Warning	HFO	11 hr
Mar 1, 6:10 AM HST	Special Weather Statement	HFO	65 min
Mar 1, 5:21 PM HST	Areal Flood Advisory	HFO	3 hr
Mar 4, 3:07 PM HST	High Surf Advisory	HFO	61 hr
Mar 5, 8:28 AM HST	Areal Flood Advisory	HFO	3 hr
Mar 7, 12:01 PM HST	High Surf Advisory	HFO	70 hr
Mar 7, 3:52 PM HST	Flash Flood Watch	HFO	59 hr
Mar 8, 3:34 AM HST	High Surf Warning	HFO	36 hr
Mar 9, 12:02 PM HST	Severe Thunderstorm Watch	SPC	6 hr
Mar 9, 2:49 PM HST	Areal Flood Advisory	HFO	3 hr
Mar 9, 3:13 PM HST	Special Weather Statement	HFO	62 min
Mar 9, 3:27 PM HST	Flash Flood Warning	HFO	3 hr
Mar 10, 3:09 PM HST	Areal Flood Advisory	HFO	3 hr
Mar 12, 3:58 PM HST	High Surf Advisory	HFO	24 hr
Mar 18, 7:21 PM HST	High Surf Advisory	HFO	44 hr
Mar 25, 3:24 AM HST	High Surf Warning	HFO	36 hr
Mar 25, 3:24 AM HST	High Surf Advisory	HFO	3 days
Mar 30, 3:53 PM HST	High Surf Warning	HFO	41 hr
Apr 1, 8:49 AM HST	High Surf Advisory	HFO	19 hr
Apr 13, 3:28 PM HST	Areal Flood Advisory	HFO	3 hr
Apr 13, 6:26 PM HST	Areal Flood Advisory	HFO	3 hr
Apr 13, 7:33 PM HST	Areal Flood Advisory	HFO	3 hr
Apr 14, 4:37 AM HST	Areal Flood Advisory	HFO	113 min
Apr 14, 12:19 PM HST	Areal Flood Advisory	HFO	3 hr
Apr 20, 3:36 AM HST	High Surf Advisory	HFO	36 hr
Apr 20, 3:40 PM HST	High Surf Warning	HFO	24 hr
Apr 21, 3:30 PM HST	High Surf Advisory	HFO	12 hr
Apr 27, 3:37 PM HST	Areal Flood Advisory	HFO	3 hr
Apr 27, 6:15 PM HST	Areal Flood Advisory	HFO	3 hr
Apr 28, 8:53 AM HST	Areal Flood Advisory	HFO	3 hr
Apr 28, 10:03 AM HST	Flash Flood Watch	HFO	53 hr
Apr 28, 10:16 AM HST	Areal Flood Advisory	HFO	3 hr
Apr 28, 11:27 AM HST	Areal Flood Advisory	HFO	3 hr
Apr 28, 2:12 PM HST	Areal Flood Advisory	HFO	3 hr
Apr 28, 3:03 PM HST	Flash Flood Warning	HFO	3 hr
Apr 28, 10:06 PM HST	Areal Flood Advisory	HFO	3 hr
May 7, 3:25 PM HST	High Surf Advisory	HFO	24 hr
May 8, 12:47 PM HST	Areal Flood Advisory	HFO	3 hr
May 8, 3:18 PM HST	Areal Flood Advisory	HFO	3 hr
May 13, 10:48 AM HST	High Surf Advisory	HFO	5 days
May 25, 3:25 PM HST	High Surf Advisory	HFO	3 days
Jun 14, 9:37 PM HST	Areal Flood Advisory	HFO	3 hr
Jun 19, 3:56 PM HST	High Surf Advisory	HFO	66 hr
Jul 19, 3:49 PM HST	High Surf Advisory	HFO	4 days
Jul 24, 7:14 AM HST	Areal Flood Advisory	HFO	3 hr
Jul 24, 4:10 PM HST	Areal Flood Advisory	HFO	3 hr
Aug 2, 5:50 AM HST	Areal Flood Advisory	HFO	9 hr
Aug 2, 3:24 PM HST	Areal Flood Advisory	HFO	3 hr
Aug 2, 6:14 PM HST	Areal Flood Advisory	HFO	3 hr
Aug 21, 10:07 AM HST	Areal Flood Advisory	HFO	3 hr
Aug 21, 12:52 PM HST	Areal Flood Advisory	HFO	3 hr
Aug 29, 2:30 PM HST	Areal Flood Advisory	HFO	3 hr
Aug 29, 4:45 PM HST	Flash Flood Warning	HFO	3 hr
Aug 29, 7:45 PM HST	Areal Flood Advisory	HFO	3 hr
Aug 31, 3:41 AM HST	High Surf Advisory	HFO	72 hr
Sep 11, 3:00 PM HST	Areal Flood Advisory	HFO	3 hr
Oct 2, 11:48 AM HST	Areal Flood Advisory	HFO	3 hr
Oct 2, 2:37 PM HST	Areal Flood Advisory	HFO	3 hr
Oct 5, 12:42 PM HST	High Surf Advisory	HFO	4 days
Oct 13, 2:28 AM HST	Areal Flood Advisory	HFO	3 hr
Oct 13, 3:40 PM HST	High Surf Advisory	HFO	7 days
Oct 14, 7:47 PM HST	Wind Advisory	HFO	6 days
Oct 22, 3:34 AM HST	Flash Flood Watch	HFO	3 days
Oct 23, 9:56 AM HST	High Surf Advisory	HFO	39 hr
Oct 23, 7:42 PM HST	Areal Flood Advisory	HFO	3 hr
Oct 25, 12:39 AM HST	High Surf Warning	HFO	20 hr
Oct 25, 12:39 AM HST	High Surf Advisory	HFO	20 hr
Oct 25, 8:56 PM HST	High Surf Advisory	HFO	19 hr
Oct 26, 4:05 PM HST	High Surf Warning	HFO	48 hr
Oct 26, 4:05 PM HST	High Surf Advisory	HFO	64 hr
Oct 28, 3:29 PM HST	Areal Flood Advisory	HFO	3 hr
Nov 6, 3:17 AM HST	High Surf Advisory	HFO	36 hr
Nov 9, 3:58 AM HST	High Surf Advisory	HFO	60 hr
Nov 11, 2:11 PM HST	Areal Flood Advisory	HFO	3 hr
Nov 11, 7:01 PM HST	Flash Flood Warning	HFO	3 hr
Nov 11, 9:28 PM HST	Areal Flood Advisory	HFO	3 hr
Nov 14, 3:49 PM HST	High Surf Advisory	HFO	48 hr
Nov 18, 4:34 PM HST	High Surf Advisory	HFO	71 hr
Nov 21, 3:40 PM HST	High Surf Warning	HFO	4 days
Nov 22, 3:36 PM HST	Wind Advisory	HFO	4 days
Nov 24, 3:32 PM HST	High Surf Advisory	HFO	8 days
Dec 1, 8:58 PM HST	Wind Advisory	HFO	42 hr
Dec 2, 7:48 AM HST	High Surf Advisory	HFO	44 hr
Dec 4, 10:04 AM HST	High Surf Advisory	HFO	3 days
Dec 4, 3:26 PM HST	Wind Advisory	HFO	30 hr
Dec 5, 8:01 AM HST	High Surf Warning	HFO	52 hr
Dec 7, 12:10 PM HST	High Surf Advisory	HFO	27 hr
Dec 9, 3:36 PM HST	High Surf Warning	HFO	36 hr
Dec 9, 3:36 PM HST	High Surf Advisory	HFO	48 hr
Dec 12, 3:23 AM HST	High Surf Warning	HFO	60 hr
Dec 12, 3:23 AM HST	High Surf Advisory	HFO	4 days
Dec 14, 3:29 AM HST	Wind Advisory	HFO	32 hr
Dec 17, 3:23 PM HST	Flash Flood Watch	HFO	4 days
Dec 18, 3:24 PM HST	High Surf Advisory	HFO	4 days
Dec 23, 3:25 AM HST	High Surf Advisory	HFO	36 hr
Dec 24, 4:35 PM HST	High Surf Advisory	HFO	47 hr
Dec 26, 5:11 AM HST	Areal Flood Advisory	HFO	6 hr
Dec 26, 11:11 AM HST	Areal Flood Advisory	HFO	3 hr
Dec 26, 2:11 PM HST	Flash Flood Warning	HFO	6 hr
Dec 26, 3:01 PM HST	Flash Flood Watch	HFO	13 hr
Dec 27, 12:43 PM HST	Areal Flood Advisory	HFO	3 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 Watch	2
Special Weather Statement	7
Flooding
Flash Flood Warning	9
Flash Flood Watch	7
Areal Flood Advisory	46
Wind and dust
High Wind Warning	1
High Wind Watch	1
Wind Advisory	9
Coast and beach
High Surf Warning	17
High Surf Advisory	52

The busiest days

Days with the most alerts issued, by UTC date.

Nearby

Alerts in force now Tornadoes on record Forecast The radar archive 2016 2018

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.