Alert archive / Hawaii / Honolulu County

Weather alerts in Honolulu County, Hawaii, 2023

125 weather alerts in 2023, 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 2023. Tap one for its archive.

Alerts: 125
Warnings: 22
Watches: 10
Advisories: 80
Busiest month: April20 alerts
Busiest day: April 19, 20236 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, 2023

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
Tornado warnings	0			0
Severe thunderstorm warnings	0			1	0%
Flash flood warnings	6	3	50%	5	40%	55 min

Each office's whole area, 2023

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
NWS Honolulu, HI: severe thunderstorm warnings	0			1	0%
NWS Honolulu, HI: flash flood warnings	33	16	52%	43	72%	149 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, 3:17 PM HST	High Surf Warning	HFO	36 hr
Jan 3, 3:26 AM HST	High Surf Advisory	HFO	12 hr
Jan 3, 3:18 PM HST	High Surf Advisory	HFO	24 hr
Jan 10, 3:38 AM HST	High Surf Warning	HFO	72 hr
Jan 10, 3:20 PM HST	High Surf Advisory	HFO	7 days
Jan 19, 3:51 PM HST	High Surf Advisory	HFO	29 hr
Jan 19, 4:01 PM HST	Areal Flood Advisory	HFO	3 hr
Jan 21, 4:15 AM HST	High Surf Warning	HFO	60 hr
Jan 23, 3:49 PM HST	High Surf Advisory	HFO	22 hr
Jan 24, 3:53 PM HST	High Surf Warning	HFO	40 hr
Jan 26, 8:02 AM HST	High Surf Advisory	HFO	31 hr
Jan 27, 8:56 AM HST	Flood Watch	HFO	3 days
Jan 29, 3:08 AM HST	Wind Advisory	HFO	39 hr
Jan 29, 10:09 AM HST	High Surf Advisory	HFO	42 hr
Jan 29, 3:07 PM HST	Areal Flood Advisory	HFO	3 hr
Jan 29, 5:22 PM HST	Areal Flood Advisory	HFO	3 hr
Jan 30, 3:47 PM HST	Areal Flood Advisory	HFO	36 min
Feb 4, 7:44 AM HST	Areal Flood Advisory	HFO	93 min
Feb 4, 8:48 AM HST	Areal Flood Advisory	HFO	28 min
Feb 4, 9:16 AM HST	Flash Flood Warning	HFO	2 hr
Feb 4, 11:26 AM HST	Areal Flood Advisory	HFO	2 hr
Feb 7, 6:26 PM HST	Wind Advisory	HFO	4 days
Feb 8, 3:16 PM HST	High Wind Warning	HFO	60 hr
Feb 8, 3:43 PM HST	High Surf Advisory	HFO	24 hr
Feb 9, 12:17 PM HST	Wind Advisory	HFO	15 hr
Feb 9, 3:33 PM HST	High Surf Warning	HFO	48 hr
Feb 11, 3:28 PM HST	High Surf Advisory	HFO	5 days
Feb 14, 2:57 PM HST	Flood Watch	HFO	5 days
Feb 16, 3:35 PM HST	High Surf Advisory	HFO	48 hr
Feb 17, 4:56 AM HST	Areal Flood Advisory	HFO	3 hr
Feb 20, 9:49 AM HST	Flood Watch	HFO	30 hr
Feb 20, 12:27 PM HST	Areal Flood Advisory	HFO	14 hr
Feb 21, 3:40 AM HST	High Surf Advisory	HFO	7 days
Feb 26, 3:38 PM HST	Wind Advisory	HFO	4 days
Feb 28, 3:48 PM HST	High Surf Warning	HFO	48 hr
Mar 2, 3:34 PM HST	High Surf Advisory	HFO	24 hr
Mar 7, 3:46 AM HST	Wind Advisory	HFO	48 hr
Mar 7, 3:39 PM HST	High Surf Warning	HFO	72 hr
Mar 10, 3:30 PM HST	High Surf Advisory	HFO	12 hr
Mar 22, 11:51 PM HST	Areal Flood Advisory	HFO	3 hr
Mar 23, 12:44 AM HST	Areal Flood Advisory	HFO	2 hr
Mar 23, 1:15 AM HST	Special Weather Statement	HFO	60 min
Mar 23, 1:44 AM HST	Flood Watch	HFO	18 hr
Mar 27, 2:49 PM HST	Areal Flood Advisory	HFO	96 min
Mar 28, 8:28 AM HST	Flood Watch	HFO	42 hr
Apr 2, 1:20 PM HST	Areal Flood Advisory	HFO	86 min
Apr 2, 8:14 PM HST	Special Weather Statement	HFO	61 min
Apr 2, 8:40 PM HST	Areal Flood Advisory	HFO	3 hr
Apr 2, 9:05 PM HST	Special Weather Statement	HFO	55 min
Apr 2, 9:44 PM HST	Flash Flood Warning	HFO	3 hr
Apr 2, 9:53 PM HST	Special Weather Statement	HFO	52 min
Apr 4, 8:29 AM HST	Areal Flood Advisory	HFO	3 hr
Apr 4, 11:22 AM HST	Areal Flood Advisory	HFO	81 min
Apr 17, 3:01 AM HST	Flood Watch	HFO	66 hr
Apr 18, 10:57 PM HST	Special Weather Statement	HFO	93 min
Apr 19, 12:28 AM HST	Special Weather Statement	HFO	92 min
Apr 19, 1:28 AM HST	Areal Flood Advisory	HFO	3 hr
Apr 19, 1:48 AM HST	Special Weather Statement	HFO	72 min
Apr 19, 2:58 AM HST	Flash Flood Warning	HFO	96 min
Apr 19, 3:00 AM HST	Special Weather Statement	HFO	90 min
Apr 20, 8:05 PM HST	Areal Flood Advisory	HFO	113 min
Apr 21, 1:39 AM HST	Areal Flood Advisory	HFO	6 hr
Apr 24, 6:48 AM HST	High Surf Advisory	HFO	21 hr
Apr 29, 3:34 AM HST	Areal Flood Advisory	HFO	84 min
Apr 29, 4:58 AM HST	Flash Flood Warning	HFO	3 hr
May 2, 6:33 AM HST	High Surf Advisory	HFO	21 hr
May 2, 3:32 PM HST	Areal Flood Advisory	HFO	119 min
May 3, 3:30 AM HST	High Surf Advisory	HFO	36 hr
May 11, 9:22 AM HST	Areal Flood Advisory	HFO	6 hr
May 12, 3:41 PM HST	High Surf Advisory	HFO	47 hr
May 16, 3:08 PM HST	Flood Watch	HFO	48 hr
May 28, 2:32 PM HST	Areal Flood Advisory	HFO	2 hr
Jun 24, 3:45 AM HST	High Surf Advisory	HFO	35 hr
Jun 26, 3:35 AM HST	High Surf Advisory	HFO	30 hr
Jul 17, 4:01 AM HST	Flood Watch	HFO	59 hr
Jul 17, 3:35 PM HST	Wind Advisory	HFO	48 hr
Jul 18, 5:16 PM HST	High Surf Advisory	HFO	22 hr
Jul 19, 4:34 AM HST	Areal Flood Advisory	HFO	2 hr
Jul 29, 3:10 AM HST	Coastal Flood Statement	HFO	6 days
Aug 6, 3:33 AM HST	High Wind Watch	HFO	24 hr
Aug 7, 3:15 AM HST	High Wind Warning	HFO	48 hr
Aug 7, 3:15 AM HST	Wind Advisory	HFO	66 hr
Aug 7, 3:54 PM HST	High Surf Advisory	HFO	48 hr
Aug 28, 4:22 PM HST	Coastal Flood Statement	HFO	50 hr
Oct 2, 5:04 PM HST	Areal Flood Advisory	HFO	78 min
Oct 2, 11:11 PM HST	Areal Flood Advisory	HFO	56 min
Oct 3, 12:07 AM HST	Flash Flood Warning	HFO	96 min
Oct 16, 3:32 PM HST	High Surf Warning	HFO	48 hr
Oct 17, 3:08 AM HST	High Surf Advisory	HFO	60 hr
Oct 27, 3:40 AM HST	Coastal Flood Statement	HFO	4 days
Oct 31, 8:10 AM HST	Coastal Flood Statement	HFO	24 hr
Nov 5, 3:00 AM HST	Wind Advisory	HFO	37 hr
Nov 12, 9:22 AM HST	Wind Advisory	HFO	3 days
Nov 13, 3:35 PM HST	High Surf Advisory	HFO	5 days
Nov 19, 3:30 PM HST	High Surf Warning	HFO	36 hr
Nov 19, 3:30 PM HST	High Surf Advisory	HFO	48 hr
Nov 20, 4:06 AM HST	Areal Flood Advisory	HFO	5 hr
Nov 21, 9:53 PM HST	Areal Flood Advisory	HFO	3 hr
Nov 22, 12:48 AM HST	Areal Flood Advisory	HFO	10 hr
Nov 23, 3:46 AM HST	High Surf Warning	HFO	60 hr
Nov 25, 3:40 AM HST	Areal Flood Advisory	HFO	105 min
Nov 25, 3:49 PM HST	High Surf Advisory	HFO	36 hr
Nov 27, 3:01 AM HST	Flood Watch	HFO	5 days
Nov 28, 9:41 AM HST	Areal Flood Advisory	HFO	3 hr
Nov 29, 8:47 AM HST	Special Weather Statement	HFO	28 min
Nov 29, 9:30 AM HST	Areal Flood Advisory	HFO	3 hr
Nov 30, 10:25 AM HST	Areal Flood Advisory	HFO	3 hr
Dec 2, 10:07 AM HST	High Surf Advisory	HFO	66 hr
Dec 5, 3:42 AM HST	High Surf Warning	HFO	14 hr
Dec 5, 3:43 PM HST	High Surf Advisory	HFO	24 hr
Dec 8, 3:23 PM HST	High Surf Advisory	HFO	24 hr
Dec 12, 4:04 AM HST	High Surf Advisory	HFO	47 hr
Dec 13, 4:00 AM HST	Wind Advisory	HFO	56 hr
Dec 14, 3:30 PM HST	High Surf Advisory	HFO	24 hr
Dec 17, 3:35 PM HST	High Surf Advisory	HFO	3 hr
Dec 17, 6:44 PM HST	High Surf Warning	HFO	33 hr
Dec 18, 3:28 AM HST	High Surf Advisory	HFO	24 hr
Dec 19, 3:38 AM HST	High Surf Advisory	HFO	36 hr
Dec 20, 8:56 AM HST	Areal Flood Advisory	HFO	8 hr
Dec 20, 4:58 PM HST	Flash Flood Warning	HFO	5 hr
Dec 23, 7:20 PM HST	High Surf Advisory	HFO	8 hr
Dec 23, 7:20 PM HST	High Surf Advisory	HFO	33 hr
Dec 26, 3:33 AM HST	High Surf Warning	HFO	3 days
Dec 28, 3:28 PM HST	High Surf Advisory	HFO	53 hr
Dec 30, 8:15 PM HST	High Surf Warning	HFO	19 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
Special Weather Statement	9
Flooding
Flash Flood Warning	6
Flood Watch	9
Areal Flood Advisory	34
Wind and dust
High Wind Warning	2
High Wind Watch	1
Wind Advisory	10
Coast and beach
High Surf Warning	14
High Surf Advisory	36
Coastal Flood Statement	4

The busiest days

Days with the most alerts issued, by UTC date.

Nearby

Alerts in force now Tornadoes on record Forecast The radar archive 2022 2024

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.