Alert archive / Hawaii / Hawaii County

Weather alerts in Hawaii County, Hawaii, 2012

76 weather alerts in 2012, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.

Hawaii County and its neighbors

Each county as a circle sized by its count in 2012. Tap one for its archive.

Alerts
76
Warnings
8
Watches
3
Advisories
65
Busiest month
March17 alerts
Busiest day
March 9, 20123 alerts

Over time

By month

Warning verification

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

Hawaii County, 2012

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
Tornado warnings00
Severe thunderstorm warnings010%
Flash flood warnings00

Each office's whole area, 2012

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
NWS Honolulu, HI: tornado warnings010%
NWS Honolulu, HI: severe thunderstorm warnings8275%1164%21 min
NWS Honolulu, HI: flash flood warnings241538%5392%263 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.

IssuedProductOfficeLasted
Jan 2, 3:28 PM HSTHigh Surf WarningHFO60 hr
Jan 4, 3:33 PM HSTHigh Surf AdvisoryHFO36 hr
Jan 6, 3:40 AM HSTHigh Surf AdvisoryHFO3 days
Jan 10, 3:27 PM HSTHigh Surf AdvisoryHFO3 days
Jan 16, 1:42 AM HSTAreal Flood AdvisoryHFO107 min
Jan 16, 7:04 AM HSTAreal Flood AdvisoryHFO6 hr
Jan 16, 6:59 PM HSTAreal Flood AdvisoryHFO118 min
Jan 27, 3:31 PM HSTHigh Surf AdvisoryHFO42 hr
Jan 29, 3:39 AM HSTWind AdvisoryHFO30 hr
Jan 30, 3:32 PM HSTHigh Surf AdvisoryHFO41 hr
Feb 4, 4:46 AM HSTWind AdvisoryHFO29 hr
Feb 5, 10:14 AM HSTHigh Wind WarningHFO3 days
Feb 6, 3:21 PM HSTHigh Surf AdvisoryHFO4 days
Feb 8, 3:39 PM HSTWind AdvisoryHFO12 hr
Feb 15, 3:30 AM HSTHigh Surf AdvisoryHFO72 hr
Feb 16, 11:53 AM HSTWind AdvisoryHFO6 days
Feb 17, 3:25 PM HSTWinter Storm WatchHFO24 hr
Feb 18, 3:26 PM HSTWinter Storm WarningHFO42 hr
Feb 19, 1:41 AM HSTAreal Flood AdvisoryHFO7 hr
Feb 20, 9:32 AM HSTWinter Weather AdvisoryHFO26 hr
Feb 21, 11:54 AM HSTWinter Storm WarningHFO22 hr
Mar 3, 3:10 AM HSTWinter Weather AdvisoryHFO36 hr
Mar 3, 4:31 AM HSTAreal Flood AdvisoryHFO7 hr
Mar 3, 4:47 PM HSTAreal Flood AdvisoryHFO3 hr
Mar 3, 11:21 PM HSTAreal Flood AdvisoryHFO100 min
Mar 4, 2:58 PM HSTWind AdvisoryHFO3 days
Mar 6, 7:10 AM HSTWinter Weather AdvisoryHFO9 hr
Mar 6, 8:50 PM HSTWinter Weather AdvisoryHFO18 hr
Mar 6, 10:02 PM HSTAreal Flood AdvisoryHFO93 min
Mar 8, 3:08 PM HSTWinter Weather AdvisoryHFO20 hr
Mar 8, 5:17 PM HSTAreal Flood AdvisoryHFO3 hr
Mar 9, 10:26 AM HSTWind AdvisoryHFO41 hr
Mar 10, 5:41 PM HSTWinter Weather AdvisoryHFO12 hr
Mar 11, 7:16 AM HSTWind AdvisoryHFO32 hr
Mar 16, 1:14 PM HSTWind AdvisoryHFO15 hr
Mar 24, 1:03 PM HSTWinter Weather AdvisoryHFO50 hr
Mar 24, 7:31 PM HSTAreal Flood AdvisoryHFO4 hr
Mar 27, 7:22 AM HSTWind AdvisoryHFO20 hr
Apr 8, 9:37 AM HSTWind AdvisoryHFO11 hr
Apr 29, 3:32 AM HSTWind AdvisoryHFO4 days
May 3, 8:31 PM HSTWind AdvisoryHFO19 hr
May 20, 8:44 PM HSTWind AdvisoryHFO4 days
May 22, 3:07 PM HSTHigh Wind WarningHFO25 hr
May 23, 5:20 PM HSTHigh Wind WarningHFO17 hr
May 25, 9:20 AM HSTWind AdvisoryHFO5 days
May 31, 6:33 PM HSTWind AdvisoryHFO5 days
Jun 15, 3:46 PM HSTHigh Wind WatchHFO48 hr
Jun 15, 3:46 PM HSTWind AdvisoryHFO48 hr
Jun 17, 3:30 PM HSTHigh Wind WarningHFO34 hr
Jun 17, 3:30 PM HSTWind AdvisoryHFO34 hr
Jun 25, 8:52 PM HSTWind AdvisoryHFO7 hr
Jul 4, 7:15 AM HSTHigh Surf AdvisoryHFO61 hr
Jul 8, 12:30 PM HSTWind AdvisoryHFO6 hr
Jul 15, 3:37 PM HSTWind AdvisoryHFO24 hr
Aug 7, 12:06 PM HSTWind AdvisoryHFO15 hr
Aug 13, 3:28 PM HSTWind AdvisoryHFO48 hr
Aug 20, 6:29 AM HSTAreal Flood AdvisoryHFO3 hr
Aug 31, 2:57 AM HSTTsunami WatchHEB35 min
Sep 26, 3:46 PM HSTHigh Surf AdvisoryHFO60 hr
Oct 9, 10:06 AM HSTHigh Surf AdvisoryHFO47 hr
Oct 11, 3:24 AM HSTWind AdvisoryHFO3 days
Oct 22, 6:31 AM HSTWind AdvisoryHFO9 hr
Oct 25, 3:27 PM HSTHigh Surf AdvisoryHFO60 hr
Oct 27, 7:09 PM HSTTsunami WarningHEB6 hr
Oct 28, 12:54 AM HSTTsunami AdvisoryHEB3 hr
Nov 15, 3:33 AM HSTWind AdvisoryHFO36 hr
Dec 2, 1:17 PM HSTWind AdvisoryHFO21 hr
Dec 7, 3:05 PM HSTHigh Surf AdvisoryHFO48 hr
Dec 10, 9:32 AM HSTWind AdvisoryHFO5 hr
Dec 11, 10:26 AM HSTWind AdvisoryHFO8 hr
Dec 11, 3:29 PM HSTWind AdvisoryHFO24 hr
Dec 12, 4:13 PM HSTWind AdvisoryHFO71 hr
Dec 15, 9:29 PM HSTWind AdvisoryHFO66 hr
Dec 16, 11:00 AM HSTWind AdvisoryHFO53 hr
Dec 27, 10:35 PM HSTWind AdvisoryHFO7 hr
Dec 29, 3:06 PM HSTHigh Surf AdvisoryHFO63 hr

By product

Every kind of product issued here, grouped by hazard. Each opens the same place narrowed to that product.

The busiest days

Days with the most alerts issued, by UTC date.

Nearby

Alerts in force nowTornadoes on recordForecastThe radar archive20112013

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.