Weather alerts in Maui County, Hawaii, 2011

155 weather alerts in 2011, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.

Maui County and its neighbors

Each county as a circle sized by its count in 2011. Tap one for its archive.

Alerts: 155
Warnings: 17
Watches: 11
Advisories: 127
Busiest month: January39 alerts
Busiest day: January 13, 201111 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 1 tornado reports fell inside a warning.

Maui County, 2011

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
Tornado warnings	0			1	0%
Severe thunderstorm warnings	2	0	100%	0
Flash flood warnings	8	5	38%	3	67%	122 min

Each office's whole area, 2011

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
NWS Honolulu, HI: tornado warnings	0			1	0%
NWS Honolulu, HI: severe thunderstorm warnings	3	0	100%	8	0%
NWS Honolulu, HI: flash flood warnings	41	20	51%	31	87%	116 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, 2:49 PM HST	High Surf Advisory	HFO	49 hr
Jan 2, 5:43 AM HST	Wind Advisory	HFO	40 hr
Jan 3, 4:11 PM HST	High Surf Advisory	HFO	4 days
Jan 8, 3:45 AM HST	Wind Advisory	HFO	30 hr
Jan 10, 3:46 AM HST	High Surf Advisory	HFO	60 hr
Jan 10, 3:46 AM HST	Wind Advisory	HFO	24 hr
Jan 10, 3:38 PM HST	Flash Flood Watch	HFO	3 days
Jan 10, 3:50 PM HST	Areal Flood Advisory	HFO	3 hr
Jan 10, 3:54 PM HST	Areal Flood Advisory	HFO	3 hr
Jan 10, 5:25 PM HST	Areal Flood Advisory	HFO	3 hr
Jan 10, 6:11 PM HST	Flash Flood Warning	HFO	3 hr
Jan 10, 9:16 PM HST	Areal Flood Advisory	HFO	3 hr
Jan 11, 3:30 PM HST	Wind Advisory	HFO	53 hr
Jan 12, 5:18 AM HST	Areal Flood Advisory	HFO	6 hr
Jan 12, 5:40 AM HST	Areal Flood Advisory	HFO	9 hr
Jan 12, 5:44 AM HST	Areal Flood Advisory	HFO	3 hr
Jan 12, 8:24 AM HST	Flash Flood Warning	HFO	6 hr
Jan 12, 11:49 AM HST	Areal Flood Advisory	HFO	3 hr
Jan 12, 11:53 AM HST	Severe Thunderstorm Warning	HFO	37 min
Jan 12, 12:19 PM HST	Flash Flood Warning	HFO	2 hr
Jan 12, 2:22 PM HST	Areal Flood Advisory	HFO	6 hr
Jan 12, 6:31 PM HST	Areal Flood Advisory	HFO	3 hr
Jan 12, 9:26 PM HST	Areal Flood Advisory	HFO	3 hr
Jan 12, 11:28 PM HST	Areal Flood Advisory	HFO	3 hr
Jan 13, 12:45 AM HST	Severe Thunderstorm Warning	HFO	30 min
Jan 13, 12:54 AM HST	Flash Flood Warning	HFO	3 hr
Jan 13, 1:56 AM HST	Areal Flood Advisory	HFO	3 hr
Jan 13, 3:10 AM HST	Areal Flood Advisory	HFO	3 hr
Jan 13, 3:42 AM HST	Flash Flood Warning	HFO	3 hr
Jan 13, 5:03 AM HST	Areal Flood Advisory	HFO	3 hr
Jan 13, 6:02 AM HST	Flash Flood Warning	HFO	3 hr
Jan 14, 3:39 PM HST	High Surf Advisory	HFO	64 hr
Jan 16, 8:14 PM HST	Wind Advisory	HFO	2 hr
Jan 18, 3:47 AM HST	Flash Flood Watch	HFO	36 hr
Jan 18, 3:17 PM HST	High Surf Warning	HFO	4 days
Jan 18, 11:00 PM HST	Winter Storm Warning	HFO	17 hr
Jan 21, 3:31 PM HST	High Surf Advisory	HFO	48 hr
Jan 23, 3:31 PM HST	High Surf Advisory	HFO	3 days
Jan 30, 9:46 AM HST	High Surf Warning	HFO	42 hr
Feb 1, 3:34 AM HST	High Surf Advisory	HFO	40 hr
Feb 4, 3:52 PM HST	High Surf Advisory	HFO	50 hr
Feb 6, 7:59 AM HST	High Surf Warning	HFO	56 hr
Feb 7, 6:50 PM HST	High Surf Advisory	HFO	38 hr
Feb 11, 2:44 PM HST	Areal Flood Advisory	HFO	3 hr
Feb 11, 2:54 PM HST	High Surf Advisory	HFO	3 days
Feb 11, 3:56 PM HST	Areal Flood Advisory	HFO	3 hr
Feb 11, 8:06 PM HST	Areal Flood Advisory	HFO	3 hr
Feb 11, 10:58 PM HST	Areal Flood Advisory	HFO	78 min
Feb 12, 8:27 PM HST	Areal Flood Advisory	HFO	5 hr
Feb 16, 3:34 PM HST	High Surf Advisory	HFO	41 hr
Feb 20, 10:05 AM HST	Flash Flood Watch	HFO	4 days
Feb 21, 11:42 PM HST	Areal Flood Advisory	HFO	93 min
Feb 23, 4:20 PM HST	Areal Flood Advisory	HFO	115 min
Feb 23, 5:08 PM HST	Areal Flood Advisory	HFO	3 hr
Feb 23, 7:44 PM HST	Areal Flood Advisory	HFO	3 hr
Feb 23, 9:56 PM HST	Flash Flood Warning	HFO	71 min
Feb 27, 3:39 PM HST	High Surf Advisory	HFO	36 hr
Mar 2, 3:43 PM HST	High Wind Watch	HFO	24 hr
Mar 3, 3:35 AM HST	Flash Flood Watch	HFO	60 hr
Mar 3, 7:35 AM HST	High Wind Warning	HFO	44 hr
Mar 3, 3:38 PM HST	Wind Advisory	HFO	24 hr
Mar 4, 5:31 AM HST	Areal Flood Advisory	HFO	119 min
Mar 4, 7:24 AM HST	Areal Flood Advisory	HFO	111 min
Mar 4, 9:09 AM HST	Areal Flood Advisory	HFO	111 min
Mar 4, 10:53 AM HST	Areal Flood Advisory	HFO	112 min
Mar 4, 12:44 PM HST	Areal Flood Advisory	HFO	2 hr
Mar 4, 1:36 PM HST	Areal Flood Advisory	HFO	3 hr
Mar 4, 3:14 PM HST	Wind Advisory	HFO	24 hr
Mar 4, 3:42 PM HST	Areal Flood Advisory	HFO	3 hr
Mar 4, 6:43 PM HST	Areal Flood Advisory	HFO	3 hr
Mar 6, 9:26 AM HST	Areal Flood Advisory	HFO	3 hr
Mar 13, 8:02 AM HST	High Surf Advisory	HFO	3 days
Mar 14, 10:05 AM HST	High Surf Warning	HFO	43 hr
Mar 15, 3:40 PM HST	Wind Advisory	HFO	5 days
Mar 16, 3:17 PM HST	High Surf Advisory	HFO	5 days
Mar 22, 3:38 AM HST	Wind Advisory	HFO	72 hr
Mar 22, 3:24 PM HST	High Surf Advisory	HFO	5 days
Mar 29, 3:04 PM HST	High Surf Advisory	HFO	65 hr
Apr 4, 3:39 PM HST	Flash Flood Watch	HFO	4 days
Apr 6, 3:27 PM HST	High Surf Advisory	HFO	48 hr
Apr 6, 4:49 PM HST	Areal Flood Advisory	HFO	37 min
Apr 7, 4:37 PM HST	Areal Flood Advisory	HFO	5 hr
Apr 7, 9:30 PM HST	Areal Flood Advisory	HFO	2 hr
Apr 7, 11:31 PM HST	Areal Flood Advisory	HFO	111 min
Apr 8, 3:42 AM HST	Wind Advisory	HFO	24 hr
Apr 8, 10:04 AM HST	Areal Flood Advisory	HFO	3 hr
Apr 8, 1:05 PM HST	Areal Flood Advisory	HFO	3 hr
Apr 8, 3:59 PM HST	Areal Flood Advisory	HFO	60 min
Apr 19, 3:15 PM HST	High Surf Advisory	HFO	48 hr
May 2, 2:51 PM HST	Areal Flood Advisory	HFO	3 hr
May 2, 3:35 PM HST	Areal Flood Advisory	HFO	3 hr
May 2, 3:39 PM HST	Areal Flood Advisory	HFO	3 hr
May 2, 4:24 PM HST	Areal Flood Advisory	HFO	112 min
May 2, 5:11 PM HST	Areal Flood Advisory	HFO	64 min
May 4, 3:34 PM HST	High Surf Advisory	HFO	72 hr
May 6, 2:23 AM HST	Areal Flood Advisory	HFO	3 hr
May 6, 5:11 AM HST	Areal Flood Advisory	HFO	3 hr
May 7, 3:35 PM HST	Flash Flood Watch	HFO	60 hr
May 21, 8:28 PM HST	High Surf Advisory	HFO	22 hr
May 21, 11:27 PM HST	Wind Advisory	HFO	16 hr
May 23, 4:43 PM HST	High Surf Advisory	HFO	23 hr
May 24, 3:30 PM HST	Wind Advisory	HFO	48 hr
May 27, 11:37 AM HST	Wind Advisory	HFO	28 hr
Jun 1, 7:04 AM HST	Areal Flood Advisory	HFO	2 hr
Jun 4, 7:00 AM HST	Flash Flood Watch	HFO	21 hr
Jun 4, 5:00 PM HST	High Surf Advisory	HFO	64 hr
Jun 4, 8:24 PM HST	Areal Flood Advisory	HFO	59 min
Jun 16, 11:22 AM HST	Wind Advisory	HFO	28 hr
Jun 20, 3:37 PM HST	High Surf Advisory	HFO	3 days
Jul 5, 3:43 PM HST	High Surf Advisory	HFO	4 days
Jul 6, 3:38 PM HST	Wind Advisory	HFO	36 hr
Jul 12, 1:42 PM HST	Areal Flood Advisory	HFO	3 hr
Jul 28, 4:49 AM HST	Wind Advisory	HFO	8 hr
Aug 5, 2:09 PM HST	High Surf Advisory	HFO	25 hr
Aug 29, 5:39 AM HST	High Surf Advisory	HFO	26 hr
Aug 30, 7:41 AM HST	High Surf Warning	HFO	28 hr
Aug 31, 11:52 AM HST	High Surf Advisory	HFO	28 hr
Sep 8, 3:30 PM HST	High Surf Advisory	HFO	4 days
Oct 3, 3:36 PM HST	High Surf Advisory	HFO	3 days
Oct 14, 3:13 PM HST	High Surf Advisory	HFO	24 hr
Oct 16, 3:26 PM HST	High Surf Advisory	HFO	60 hr
Oct 22, 3:32 PM HST	High Surf Advisory	HFO	36 hr
Oct 31, 8:32 PM HST	Areal Flood Advisory	HFO	112 min
Nov 2, 4:04 PM HST	Areal Flood Advisory	HFO	3 hr
Nov 3, 1:16 PM HST	Areal Flood Advisory	HFO	72 min
Nov 4, 3:38 AM HST	Areal Flood Advisory	HFO	3 hr
Nov 4, 4:02 AM HST	Flash Flood Watch	HFO	52 hr
Nov 4, 4:17 AM HST	Flash Flood Warning	HFO	3 hr
Nov 4, 7:14 AM HST	Areal Flood Advisory	HFO	115 min
Nov 9, 10:31 AM HST	High Surf Advisory	HFO	4 days
Nov 9, 12:24 PM HST	Wind Advisory	HFO	42 hr
Nov 25, 7:35 PM HST	Wind Advisory	HFO	19 hr
Nov 26, 3:36 AM HST	High Surf Advisory	HFO	3 days
Nov 26, 2:20 PM HST	Wind Advisory	HFO	13 hr
Nov 28, 8:35 AM HST	Wind Advisory	HFO	7 hr
Nov 30, 3:23 PM HST	High Surf Advisory	HFO	60 hr
Dec 5, 3:34 PM HST	High Surf Advisory	HFO	36 hr
Dec 7, 3:41 PM HST	High Surf Advisory	HFO	72 hr
Dec 10, 10:38 AM HST	Wind Advisory	HFO	33 hr
Dec 10, 8:03 PM HST	Flash Flood Watch	HFO	31 hr
Dec 10, 10:12 PM HST	Areal Flood Advisory	HFO	3 hr
Dec 11, 12:48 AM HST	High Surf Advisory	HFO	62 hr
Dec 11, 12:30 PM HST	Areal Flood Advisory	HFO	2 hr
Dec 11, 12:35 PM HST	Areal Flood Advisory	HFO	3 hr
Dec 11, 6:22 PM HST	Areal Flood Advisory	HFO	3 hr
Dec 13, 1:40 AM HST	Areal Flood Advisory	HFO	3 hr
Dec 13, 3:05 AM HST	Flash Flood Watch	HFO	24 hr
Dec 13, 8:26 AM HST	Areal Flood Advisory	HFO	2 hr
Dec 13, 11:52 AM HST	Areal Flood Advisory	HFO	46 min
Dec 13, 2:13 PM HST	Areal Flood Advisory	HFO	114 min
Dec 15, 3:34 PM HST	High Surf Advisory	HFO	3 days
Dec 19, 1:18 PM HST	High Surf Advisory	HFO	8 days
Dec 21, 3:31 AM HST	Wind Advisory	HFO	24 hr
Dec 23, 3:52 AM HST	Wind Advisory	HFO	6 days
Dec 28, 4:25 AM HST	High Surf Advisory	HFO	35 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	2
Flooding
Flash Flood Warning	8
Flash Flood Watch	10
Areal Flood Advisory	63
Winter
Winter Storm Warning	1
Wind and dust
High Wind Warning	1
High Wind Watch	1
Wind Advisory	23
Coast and beach
High Surf Warning	5
High Surf Advisory	41

The busiest days

Days with the most alerts issued, by UTC date.

Nearby

Alerts in force now Tornadoes on record Forecast The radar archive 2010 2012

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.