Alert archive / Hawaii / 2020
Weather alerts in Hawaii, April 2020
38 weather alerts in April 2020, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered any part of the state, so the counties below add up to more than the state.
Weather alerts by county
Each county as a circle sized by its count in April 2020. Tap one for its archive.
- Alerts
- 38
- Warnings
- 4
- Watches
- 1
- Advisories
- 33
- Busiest day
- April 14, 20208 alerts
Over time
By day
Days in UTC, the clock the archive keeps.
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 | Counties | Lasted |
|---|---|---|---|---|
| Mar 31, 2:26 PM HST | Areal Flood Advisory | HFO | Hawaii | 3 hr |
| Mar 31, 2:32 PM HST | Areal Flood Advisory | HFO | Honolulu | 2 hr |
| Apr 1, 1:20 PM HST | Areal Flood Advisory | HFO | Hawaii | 3 hr |
| Apr 1, 1:38 PM HST | Areal Flood Advisory | HFO | Honolulu | 93 min |
| Apr 1, 4:16 PM HST | Areal Flood Advisory | HFO | Hawaii | 67 min |
| Apr 4, 7:33 PM HST | Areal Flood Advisory | HFO | Hawaii | 9 hr |
| Apr 5, 3:09 PM HST | Areal Flood Advisory | HFO | Kalawao | 2 hr |
| Apr 5, 6:03 PM HST | Areal Flood Advisory | HFO | Honolulu | 2 hr |
| Apr 5, 6:17 PM HST | Areal Flood Advisory | HFO | Kalawao | 3 hr |
| Apr 6, 1:46 AM HST | Areal Flood Advisory | HFO | Kalawao | 3 hr |
| Apr 6, 4:15 AM HST | Areal Flood Advisory | HFO | Kauai | 75 min |
| Apr 6, 8:27 AM HST | Areal Flood Advisory | HFO | Kauai | 63 min |
| Apr 6, 4:29 PM HST | Areal Flood Advisory | HFO | Kalawao | 3 hr |
| Apr 10, 3:22 AM HST | High Surf Advisory | HFO | Honolulu, Kauai, Kalawao | 12 hr |
| Apr 10, 9:18 AM HST | Wind Advisory | HFO | Hawaii | 24 hr |
| Apr 12, 6:14 PM HST | Areal Flood Advisory | HFO | Hawaii | 3 hr |
| Apr 12, 9:09 PM HST | Areal Flood Advisory | HFO | Hawaii | 3 hr |
| Apr 13, 10:29 AM HST | Areal Flood Advisory | HFO | Honolulu | 3 hr |
| Apr 13, 10:48 AM HST | Flash Flood Warning | HFO | Honolulu | 4 hr |
| Apr 13, 5:53 PM HST | Areal Flood Advisory | HFO | Kalawao | 6 hr |
| Apr 13, 11:11 PM HST | Flash Flood Warning | HFO | Kalawao | 3 hr |
| Apr 14, 2:12 AM HST | Areal Flood Advisory | HFO | Kalawao | 2 hr |
| Apr 14, 3:00 AM HST | Flash Flood Watch | HFO | Hawaii, Honolulu, Kauai, Kalawao | 24 hr |
| Apr 14, 3:10 AM HST | Areal Flood Advisory | HFO | Honolulu | 5 hr |
| Apr 14, 3:28 AM HST | Areal Flood Advisory | HFO | Hawaii | 6 hr |
| Apr 14, 4:05 AM HST | Special Marine Warning | HFO | 73 min | |
| Apr 14, 9:15 AM HST | Areal Flood Advisory | HFO | Hawaii | 3 hr |
| Apr 14, 3:31 PM HST | Small Craft Advisory | HFO | 3 days | |
| Apr 14, 3:31 PM HST | High Surf Advisory | HFO | Honolulu, Kauai, Kalawao | 24 hr |
| Apr 14, 3:40 PM HST | Areal Flood Advisory | HFO | Hawaii | 107 min |
| Apr 15, 3:27 PM HST | High Surf Warning | HFO | Honolulu, Kauai, Kalawao | 12 hr |
| Apr 15, 3:27 PM HST | High Surf Advisory | HFO | Hawaii, Honolulu, Kauai, Kalawao | 24 hr |
| Apr 18, 3:22 AM HST | High Surf Advisory | HFO | Hawaii, Honolulu, Kauai, Kalawao | 48 hr |
| Apr 18, 3:24 AM HST | Small Craft Advisory | HFO | 4 hr | |
| Apr 18, 7:15 AM HST | Small Craft Advisory | HFO | 8 hr | |
| Apr 21, 4:39 PM HST | High Surf Advisory | HFO | Honolulu, Kauai, Kalawao | 71 hr |
| Apr 22, 3:49 PM HST | Small Craft Advisory | HFO | 13 days | |
| Apr 30, 3:18 AM HST | Wind Advisory | HFO | Hawaii, Kalawao | 36 hr |
By product
Every kind of product issued here, grouped by hazard. Each opens the same place narrowed to that product.
| Product | Alerts |
|---|---|
| Flooding | |
| Flash Flood Warning | 2 |
| Flash Flood Watch | 1 |
| Areal Flood Advisory | 22 |
| Wind and dust | |
| Wind Advisory | 2 |
| Coast and beach | |
| High Surf Warning | 1 |
| High Surf Advisory | 5 |
| Marine | |
| Special Marine Warning | 1 |
| Small Craft Advisory | 4 |
By county
Every county with at least one alert. A county page lists each alert that covered it.
Nearby
Alerts in force nowTornadoes on recordThe radar archive20192021
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. Rebuilt daily.