Alert archive / Hawaii / Honolulu County

Weather alerts in Honolulu County, Hawaii, 2010

91 weather alerts in 2010, 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 2010. Tap one for its archive.

Alerts: 91
Warnings: 21
Watches: 7
Advisories: 63
Busiest month: December32 alerts
Busiest day: December 10, 20107 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, 2010

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
Tornado warnings	0			0
Severe thunderstorm warnings	1	0	100%	0
Flash flood warnings	10	1	90%	1	100%	76 min

Each office's whole area, 2010

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
NWS Honolulu, HI: severe thunderstorm warnings	4	0	100%	1	0%
NWS Honolulu, HI: flash flood warnings	23	5	78%	7	86%	93 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 2, 3:25 PM HST	High Surf Advisory	HFO	12 hr
Jan 3, 3:38 PM HST	High Surf Advisory	HFO	24 hr
Jan 4, 3:35 PM HST	High Surf Warning	HFO	4 days
Jan 8, 3:54 AM HST	High Surf Advisory	HFO	48 hr
Jan 8, 2:22 PM HST	High Surf Warning	HFO	13 hr
Jan 10, 3:37 AM HST	High Surf Warning	HFO	60 hr
Jan 12, 3:24 PM HST	High Surf Advisory	HFO	48 hr
Jan 13, 8:53 AM HST	High Surf Warning	HFO	31 hr
Jan 14, 3:36 PM HST	High Surf Advisory	HFO	12 hr
Jan 16, 3:58 AM HST	High Surf Warning	HFO	59 hr
Jan 17, 8:39 AM HST	High Surf Advisory	HFO	55 hr
Jan 23, 3:31 PM HST	High Surf Advisory	HFO	24 hr
Jan 26, 3:35 PM HST	High Surf Warning	HFO	48 hr
Jan 28, 9:17 AM HST	High Surf Advisory	HFO	23 hr
Jan 29, 8:52 PM HST	Areal Flood Advisory	HFO	3 hr
Jan 30, 3:33 PM HST	High Surf Advisory	HFO	36 hr
Feb 2, 3:31 AM HST	High Surf Advisory	HFO	72 hr
Feb 2, 8:50 AM HST	Areal Flood Advisory	HFO	3 hr
Feb 5, 9:43 AM HST	High Surf Advisory	HFO	42 hr
Feb 9, 3:32 PM HST	High Surf Warning	HFO	60 hr
Feb 10, 3:09 PM HST	High Surf Advisory	HFO	5 days
Feb 16, 3:33 PM HST	High Surf Advisory	HFO	65 hr
Feb 20, 3:15 PM HST	High Surf Advisory	HFO	48 hr
Feb 22, 3:35 PM HST	High Surf Warning	HFO	24 hr
Feb 23, 3:27 PM HST	High Surf Advisory	HFO	12 hr
Feb 24, 3:55 PM HST	High Surf Advisory	HFO	59 hr
Feb 28, 3:54 AM HST	High Surf Warning	HFO	48 hr
Feb 28, 9:49 AM HST	Wind Advisory	HFO	54 hr
Feb 28, 3:46 PM HST	High Surf Advisory	HFO	60 hr
Mar 3, 11:37 AM HST	High Surf Advisory	HFO	3 days
Mar 8, 7:53 AM HST	Wind Advisory	HFO	68 hr
Mar 8, 3:45 PM HST	High Surf Advisory	HFO	71 hr
Mar 14, 9:21 AM HST	High Surf Advisory	HFO	71 hr
Mar 16, 1:30 PM HST	Areal Flood Advisory	HFO	3 hr
Mar 16, 3:43 PM HST	Areal Flood Advisory	HFO	3 hr
Mar 18, 3:34 PM HST	High Surf Advisory	HFO	26 hr
Mar 19, 3:33 PM HST	High Surf Advisory	HFO	68 hr
Mar 22, 3:47 PM HST	High Surf Advisory	HFO	48 hr
Mar 29, 3:27 AM HST	Wind Advisory	HFO	4 days
Mar 29, 3:29 PM HST	High Surf Advisory	HFO	7 days
Apr 6, 7:28 PM HST	Flash Flood Warning	HFO	3 hr
Apr 6, 8:23 PM HST	Flash Flood Warning	HFO	3 hr
Apr 6, 11:13 PM HST	Flash Flood Warning	HFO	8 hr
Apr 7, 8:10 AM HST	Flash Flood Watch	HFO	31 hr
Apr 7, 3:22 PM HST	Areal Flood Advisory	HFO	2 hr
Apr 12, 3:39 PM HST	High Surf Advisory	HFO	72 hr
Apr 16, 3:33 PM HST	High Surf Advisory	HFO	36 hr
Apr 21, 3:16 PM HST	High Surf Advisory	HFO	36 hr
Apr 30, 3:42 PM HST	Flash Flood Watch	HFO	56 hr
Sep 25, 9:07 AM HST	High Surf Advisory	HFO	42 hr
Sep 27, 3:30 PM HST	High Surf Advisory	HFO	36 hr
Oct 18, 5:50 PM HST	Areal Flood Advisory	HFO	6 hr
Oct 20, 3:26 AM HST	High Surf Advisory	HFO	36 hr
Oct 21, 3:28 AM HST	Areal Flood Advisory	HFO	3 hr
Oct 25, 8:33 PM HST	High Surf Advisory	HFO	3 days
Oct 31, 3:44 PM HST	High Surf Warning	HFO	4 days
Oct 31, 3:44 PM HST	High Surf Advisory	HFO	5 days
Nov 14, 3:26 AM HST	High Surf Advisory	HFO	51 hr
Nov 17, 10:11 AM HST	Flash Flood Watch	HFO	53 hr
Dec 1, 4:13 AM HST	Areal Flood Advisory	HFO	2 hr
Dec 1, 3:02 PM HST	High Surf Advisory	HFO	3 days
Dec 7, 2:58 PM HST	High Surf Advisory	HFO	60 hr
Dec 8, 3:46 AM HST	Flash Flood Watch	HFO	72 hr
Dec 9, 6:00 PM HST	Areal Flood Advisory	HFO	6 hr
Dec 9, 6:13 PM HST	Severe Thunderstorm Watch	SPC	7 hr
Dec 9, 7:31 PM HST	Wind Advisory	HFO	20 hr
Dec 9, 9:57 PM HST	Flash Flood Warning	HFO	3 hr
Dec 9, 10:09 PM HST	Severe Thunderstorm Warning	HFO	51 min
Dec 10, 12:39 AM HST	Areal Flood Advisory	HFO	3 hr
Dec 10, 4:31 AM HST	Areal Flood Advisory	HFO	3 hr
Dec 11, 3:11 AM HST	Areal Flood Advisory	HFO	3 hr
Dec 18, 3:38 PM HST	High Surf Advisory	HFO	60 hr
Dec 18, 7:53 PM HST	Flash Flood Watch	HFO	4 days
Dec 19, 5:32 AM HST	Areal Flood Advisory	HFO	3 hr
Dec 19, 8:29 AM HST	Areal Flood Advisory	HFO	6 hr
Dec 19, 12:21 PM HST	Flash Flood Warning	HFO	3 hr
Dec 19, 3:13 PM HST	Flash Flood Warning	HFO	111 min
Dec 20, 5:31 AM HST	Flash Flood Warning	HFO	2 hr
Dec 20, 2:51 PM HST	Areal Flood Advisory	HFO	3 hr
Dec 22, 1:37 PM HST	Areal Flood Advisory	HFO	3 hr
Dec 22, 4:25 PM HST	Areal Flood Advisory	HFO	99 min
Dec 23, 2:57 PM HST	Areal Flood Advisory	HFO	72 min
Dec 24, 1:51 PM HST	Areal Flood Advisory	HFO	86 min
Dec 24, 3:34 PM HST	High Surf Advisory	HFO	47 hr
Dec 24, 4:51 PM HST	Areal Flood Advisory	HFO	3 hr
Dec 24, 6:06 PM HST	Flash Flood Warning	HFO	2 hr
Dec 25, 3:30 PM HST	Flash Flood Watch	HFO	3 days
Dec 26, 4:03 AM HST	Areal Flood Advisory	HFO	3 hr
Dec 26, 4:48 AM HST	Flash Flood Warning	HFO	3 hr
Dec 26, 7:45 AM HST	Areal Flood Advisory	HFO	3 hr
Dec 27, 5:59 PM HST	Flash Flood Warning	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 Warning	1
Severe Thunderstorm Watch	1
Flooding
Flash Flood Warning	10
Flash Flood Watch	6
Areal Flood Advisory	22
Wind and dust
Wind Advisory	4
Coast and beach
High Surf Warning	10
High Surf Advisory	37

The busiest days

Days with the most alerts issued, by UTC date.

Nearby

Alerts in force now Tornadoes on record Forecast The radar archive 2009 2011

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.