Alert archive / Hawaii / Kauai County
Weather alerts in Kauai County, Hawaii, 2018
159 weather alerts in 2018, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Kauai County and its neighbors
Each county as a circle sized by its count in 2018. Tap one for its archive.
- Alerts
- 159
- Warnings
- 34
- Watches
- 24
- Advisories
- 87
- Busiest month
- February33 alerts
- Busiest day
- April 14, 20187 alerts
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
Kauai County, 2018
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 0 | 0 | ||||
| Severe thunderstorm warnings | 0 | 0 | ||||
| Flash flood warnings | 19 | 9 | 53% | 17 | 76% | 131 min |
Each office's whole area, 2018
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Honolulu, HI: severe thunderstorm warnings | 8 | 4 | 50% | 7 | 86% | 39 min |
| NWS Honolulu, HI: flash flood warnings | 78 | 36 | 54% | 71 | 77% | 219 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, 3:33 PM HST | High Surf Advisory | HFO | 42 hr |
| Jan 5, 3:44 PM HST | High Surf Advisory | HFO | 48 hr |
| Jan 9, 9:58 AM HST | High Surf Advisory | HFO | 3 days |
| Jan 11, 9:54 AM HST | High Surf Warning | HFO | 4 days |
| Jan 15, 4:01 AM HST | High Surf Advisory | HFO | 53 hr |
| Jan 17, 3:37 AM HST | Wind Advisory | HFO | 48 hr |
| Jan 17, 8:35 AM HST | High Surf Warning | HFO | 11 hr |
| Jan 17, 7:28 PM HST | High Surf Advisory | HFO | 7 days |
| Jan 21, 3:25 PM HST | High Surf Advisory | HFO | 48 hr |
| Jan 22, 11:43 PM HST | Tsunami Watch | HEB | 87 min |
| Jan 24, 6:05 AM HST | Areal Flood Advisory | HFO | 3 hr |
| Jan 30, 8:16 AM HST | High Surf Advisory | HFO | 19 hr |
| Jan 31, 3:54 AM HST | Special Weather Statement | HFO | 51 min |
| Jan 31, 3:38 PM HST | High Surf Advisory | HFO | 48 hr |
| Feb 1, 3:05 PM HST | Flash Flood Watch | HFO | 6 days |
| Feb 1, 4:32 PM HST | Severe Thunderstorm Watch | SPC | 135 days |
| Feb 1, 4:42 PM HST | Special Weather Statement | HFO | 63 min |
| Feb 1, 6:15 PM HST | Areal Flood Advisory | HFO | 3 hr |
| Feb 2, 6:40 AM HST | Special Weather Statement | HFO | 50 min |
| Feb 2, 8:03 AM HST | Areal Flood Advisory | HFO | 6 hr |
| Feb 2, 3:13 PM HST | High Surf Warning | HFO | 48 hr |
| Feb 3, 4:03 AM HST | Special Weather Statement | HFO | 87 min |
| Feb 3, 10:44 PM HST | Special Weather Statement | HFO | 31 min |
| Feb 4, 3:27 AM HST | High Surf Advisory | HFO | 24 hr |
| Feb 4, 5:22 AM HST | Areal Flood Advisory | HFO | 3 hr |
| Feb 4, 7:11 AM HST | Flash Flood Warning | HFO | 3 hr |
| Feb 4, 2:13 PM HST | Areal Flood Advisory | HFO | 3 hr |
| Feb 4, 2:26 PM HST | Special Weather Statement | HFO | 49 min |
| Feb 4, 3:43 PM HST | Flash Flood Warning | HFO | 4 hr |
| Feb 5, 9:12 PM HST | Areal Flood Advisory | HFO | 6 hr |
| Feb 6, 2:54 AM HST | Flash Flood Warning | HFO | 3 hr |
| Feb 6, 2:57 PM HST | Areal Flood Advisory | HFO | 3 hr |
| Feb 8, 3:05 PM HST | High Surf Advisory | HFO | 24 hr |
| Feb 13, 3:05 AM HST | Flash Flood Watch | HFO | 3 days |
| Feb 13, 3:10 PM HST | High Surf Advisory | HFO | 25 hr |
| Feb 16, 3:23 PM HST | Flash Flood Watch | HFO | 3 days |
| Feb 18, 3:01 PM HST | Areal Flood Advisory | HFO | 3 hr |
| Feb 18, 7:25 PM HST | Areal Flood Advisory | HFO | 3 hr |
| Feb 19, 3:30 PM HST | High Surf Advisory | HFO | 48 hr |
| Feb 21, 3:56 AM HST | Flash Flood Watch | HFO | 71 hr |
| Feb 22, 2:18 PM HST | Areal Flood Advisory | HFO | 3 hr |
| Feb 22, 3:10 PM HST | Flash Flood Warning | HFO | 3 hr |
| Feb 22, 5:43 PM HST | Flash Flood Warning | HFO | 8 hr |
| Feb 24, 9:27 PM HST | Flash Flood Watch | HFO | 30 hr |
| Feb 24, 10:47 PM HST | Areal Flood Advisory | HFO | 3 hr |
| Feb 26, 3:46 PM HST | Wind Advisory | HFO | 59 hr |
| Mar 6, 3:30 AM HST | High Surf Advisory | HFO | 5 days |
| Mar 11, 3:31 AM HST | High Surf Advisory | HFO | 3 days |
| Mar 12, 3:30 AM HST | High Surf Warning | HFO | 24 hr |
| Mar 14, 9:28 AM HST | Areal Flood Advisory | HFO | 3 hr |
| Mar 14, 10:54 AM HST | Flash Flood Warning | HFO | 6 hr |
| Mar 14, 4:55 PM HST | Flash Flood Watch | HFO | 20 hr |
| Mar 14, 7:02 PM HST | Flash Flood Warning | HFO | 5 hr |
| Mar 14, 7:31 PM HST | Special Weather Statement | HFO | 44 min |
| Mar 15, 4:09 AM HST | Areal Flood Advisory | HFO | 6 hr |
| Mar 15, 7:19 AM HST | Flash Flood Warning | HFO | 6 hr |
| Mar 20, 10:38 AM HST | High Surf Warning | HFO | 65 hr |
| Mar 22, 5:06 AM HST | Areal Flood Advisory | HFO | 6 hr |
| Mar 22, 3:41 PM HST | Flash Flood Watch | HFO | 55 hr |
| Mar 23, 6:16 PM HST | Areal Flood Advisory | HFO | 3 hr |
| Mar 23, 9:07 PM HST | Areal Flood Advisory | HFO | 3 hr |
| Mar 30, 9:10 PM HST | High Surf Advisory | HFO | 18 hr |
| Apr 2, 8:00 AM HST | Areal Flood Advisory | HFO | 3 hr |
| Apr 3, 10:02 AM HST | Flash Flood Watch | HFO | 20 hr |
| Apr 6, 3:28 PM HST | Flash Flood Watch | HFO | 72 hr |
| Apr 8, 1:07 PM HST | Areal Flood Advisory | HFO | 3 hr |
| Apr 8, 3:33 PM HST | High Surf Advisory | HFO | 29 hr |
| Apr 9, 8:31 PM HST | High Surf Warning | HFO | 7 hr |
| Apr 10, 3:41 AM HST | High Surf Advisory | HFO | 12 hr |
| Apr 13, 1:43 PM HST | High Surf Advisory | HFO | 4 days |
| Apr 14, 1:06 AM HST | Areal Flood Advisory | HFO | 6 hr |
| Apr 14, 2:13 AM HST | Special Weather Statement | HFO | 62 min |
| Apr 14, 3:21 AM HST | Flash Flood Watch | HFO | 48 hr |
| Apr 14, 3:31 AM HST | High Surf Warning | HFO | 12 hr |
| Apr 14, 4:15 AM HST | Flash Flood Warning | HFO | 3 hr |
| Apr 14, 7:03 AM HST | Flash Flood Warning | HFO | 3 hr |
| Apr 14, 9:57 AM HST | Flash Flood Warning | HFO | 3 hr |
| Apr 14, 2:43 PM HST | Areal Flood Advisory | HFO | 3 hr |
| Apr 14, 5:15 PM HST | Flash Flood Warning | HFO | 9 hr |
| Apr 15, 2:09 AM HST | Flash Flood Warning | HFO | 24 hr |
| Apr 15, 12:01 PM HST | Special Weather Statement | HFO | 59 min |
| Apr 15, 1:01 PM HST | Special Weather Statement | HFO | 59 min |
| Apr 15, 1:57 PM HST | Special Weather Statement | HFO | 93 min |
| Apr 18, 3:44 AM HST | Flash Flood Watch | HFO | 59 hr |
| Apr 20, 1:31 AM HST | Flash Flood Warning | HFO | 6 hr |
| Apr 28, 3:22 AM HST | High Surf Warning | HFO | 48 hr |
| Apr 28, 3:22 AM HST | High Surf Advisory | HFO | 60 hr |
| May 1, 3:53 PM HST | Flash Flood Watch | HFO | 3 days |
| May 7, 3:32 PM HST | High Surf Advisory | HFO | 36 hr |
| Jun 4, 3:30 AM HST | High Surf Advisory | HFO | 37 hr |
| Jun 8, 6:44 AM HST | High Surf Advisory | HFO | 57 hr |
| Jul 5, 3:39 PM HST | High Surf Advisory | HFO | 72 hr |
| Jul 21, 3:28 AM HST | High Surf Advisory | HFO | 51 hr |
| Aug 9, 9:05 AM HST | High Surf Advisory | HFO | 18 hr |
| Aug 19, 7:01 PM HST | Areal Flood Advisory | HFO | 3 hr |
| Aug 20, 5:08 AM HST | Tropical Storm Watch | HFO | 5 days |
| Aug 21, 4:48 AM HST | Hurricane Watch | HFO | 3 days |
| Aug 21, 5:39 AM HST | Flash Flood Watch | HFO | 5 days |
| Aug 21, 4:08 PM HST | High Surf Warning | HFO | 3 days |
| Aug 21, 4:08 PM HST | High Surf Advisory | HFO | 38 hr |
| Aug 24, 1:08 AM HST | High Surf Advisory | HFO | 51 hr |
| Aug 25, 1:48 PM HST | Special Weather Statement | HFO | 42 min |
| Aug 27, 7:34 AM HST | Areal Flood Advisory | HFO | 3 hr |
| Aug 27, 10:29 AM HST | Areal Flood Advisory | HFO | 3 hr |
| Aug 27, 11:44 AM HST | Flash Flood Warning | HFO | 9 hr |
| Aug 27, 3:32 PM HST | Flash Flood Watch | HFO | 36 hr |
| Aug 27, 11:57 PM HST | Areal Flood Advisory | HFO | 3 hr |
| Aug 28, 2:29 AM HST | Flash Flood Warning | HFO | 18 hr |
| Sep 9, 5:00 PM HST | Tropical Storm Watch | HFO | 42 hr |
| Sep 10, 4:58 AM HST | Tropical Storm Warning | HFO | 66 hr |
| Sep 10, 3:07 PM HST | Flash Flood Watch | HFO | 3 days |
| Sep 11, 11:08 PM HST | Wind Advisory | HFO | 28 hr |
| Sep 12, 11:16 PM HST | Areal Flood Advisory | HFO | 4 hr |
| Sep 13, 5:15 PM HST | Areal Flood Advisory | HFO | 4 hr |
| Sep 24, 3:49 AM HST | Flash Flood Watch | HFO | 60 hr |
| Sep 25, 3:59 AM HST | Areal Flood Advisory | HFO | 97 min |
| Sep 26, 5:35 AM HST | Areal Flood Advisory | HFO | 3 hr |
| Oct 2, 3:50 AM HST | High Surf Advisory | HFO | 12 hr |
| Oct 3, 3:45 PM HST | High Surf Advisory | HFO | 36 hr |
| Oct 7, 3:00 PM HST | Areal Flood Advisory | HFO | 3 hr |
| Oct 8, 3:41 AM HST | High Surf Advisory | HFO | 4 days |
| Oct 11, 10:19 AM HST | Flash Flood Watch | HFO | 53 hr |
| Oct 15, 3:19 PM HST | High Surf Advisory | HFO | 60 hr |
| Oct 19, 3:16 AM HST | High Surf Advisory | HFO | 8 days |
| Oct 28, 1:15 PM HST | High Surf Advisory | HFO | 14 hr |
| Oct 28, 3:34 PM HST | Flash Flood Watch | HFO | 60 hr |
| Oct 29, 3:39 PM HST | High Surf Advisory | HFO | 41 hr |
| Oct 30, 2:43 AM HST | Areal Flood Advisory | HFO | 3 hr |
| Oct 30, 3:09 AM HST | Special Weather Statement | HFO | 51 min |
| Oct 30, 4:05 AM HST | Special Weather Statement | HFO | 55 min |
| Oct 30, 4:22 AM HST | Flash Flood Warning | HFO | 3 hr |
| Nov 9, 3:48 PM HST | High Surf Advisory | HFO | 36 hr |
| Nov 9, 6:31 PM HST | Areal Flood Advisory | HFO | 48 min |
| Nov 10, 12:17 AM HST | Areal Flood Advisory | HFO | 112 min |
| Nov 13, 8:28 AM HST | High Surf Advisory | HFO | 43 hr |
| Nov 15, 3:31 PM HST | High Surf Advisory | HFO | 48 hr |
| Nov 24, 3:34 PM HST | High Surf Advisory | HFO | 12 hr |
| Nov 25, 3:33 AM HST | High Surf Warning | HFO | 60 hr |
| Nov 25, 5:06 PM HST | High Surf Advisory | HFO | 70 hr |
| Nov 30, 3:46 PM HST | High Surf Advisory | HFO | 20 hr |
| Dec 4, 3:30 AM HST | High Surf Warning | HFO | 60 hr |
| Dec 6, 3:30 PM HST | High Surf Advisory | HFO | 32 hr |
| Dec 8, 3:51 PM HST | High Surf Warning | HFO | 36 hr |
| Dec 8, 3:51 PM HST | High Surf Advisory | HFO | 6 days |
| Dec 15, 3:30 AM HST | High Surf Warning | HFO | 48 hr |
| Dec 17, 3:27 AM HST | High Surf Advisory | HFO | 12 hr |
| Dec 17, 3:46 PM HST | High Surf Warning | HFO | 48 hr |
| Dec 18, 12:39 PM HST | Wind Advisory | HFO | 39 hr |
| Dec 19, 3:41 PM HST | High Surf Advisory | HFO | 24 hr |
| Dec 25, 1:57 AM HST | Areal Flood Advisory | HFO | 3 hr |
| Dec 25, 4:48 AM HST | Areal Flood Advisory | HFO | 3 hr |
| Dec 25, 5:23 AM HST | Flash Flood Warning | HFO | 2 hr |
| Dec 25, 7:36 AM HST | Areal Flood Advisory | HFO | 72 min |
| Dec 27, 9:08 AM HST | High Surf Advisory | HFO | 55 hr |
| Dec 27, 7:11 PM HST | Flash Flood Watch | HFO | 20 hr |
| Dec 28, 3:21 AM HST | Areal Flood Advisory | HFO | 109 min |
| Dec 28, 4:25 AM HST | Areal Flood Advisory | HFO | 3 hr |
| Dec 29, 8:44 AM HST | Areal Flood Advisory | HFO | 3 hr |
| Dec 29, 9:56 AM 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 Watch | 1 |
| Special Weather Statement | 14 |
| Flooding | |
| Flash Flood Warning | 19 |
| Flash Flood Watch | 19 |
| Areal Flood Advisory | 38 |
| Wind and dust | |
| Wind Advisory | 4 |
| Tropical | |
| Tropical Storm Warning | 1 |
| Hurricane Watch | 1 |
| Tropical Storm Watch | 2 |
| Coast and beach | |
| High Surf Warning | 14 |
| Tsunami Watch | 1 |
| High Surf Advisory | 45 |
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordForecastThe radar archive20172019
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.