Alert archive / Hawaii / 2021
Weather alerts in Hawaii, August 2021
23 weather alerts in August 2021, 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 August 2021. Tap one for its archive.
- Alerts
- 23
- Warnings
- 3
- Watches
- 1
- Advisories
- 19
- Busiest day
- August 22, 20214 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 |
|---|---|---|---|---|
| Jul 31, 8:30 PM HST | Gale Warning | HFO | 21 hr | |
| Jul 31, 8:30 PM HST | Wind Advisory | HFO | Hawaii, Kalawao | 21 hr |
| Aug 11, 10:36 AM HST | Areal Flood Advisory | HFO | Kauai | 87 min |
| Aug 11, 4:55 PM HST | Areal Flood Advisory | HFO | Hawaii | 3 hr |
| Aug 12, 3:50 PM HST | Small Craft Advisory | HFO | 59 hr | |
| Aug 16, 3:30 PM HST | High Surf Advisory | HFO | Hawaii, Honolulu, Kauai, Kalawao | 60 hr |
| Aug 16, 3:58 PM HST | Areal Flood Advisory | HFO | Hawaii | 3 hr |
| Aug 17, 12:36 PM HST | Areal Flood Advisory | HFO | Honolulu | 5 hr |
| Aug 17, 4:06 PM HST | Areal Flood Advisory | HFO | Hawaii | 52 min |
| Aug 19, 3:31 AM HST | Small Craft Advisory | HFO | 48 hr | |
| Aug 20, 2:39 PM HST | Flash Flood Watch | HFO | Hawaii, Honolulu, Kauai, Kalawao | 4 days |
| Aug 21, 9:39 AM HST | Small Craft Advisory | HFO | 7 hr | |
| Aug 21, 4:01 PM HST | High Surf Advisory | HFO | Hawaii, Honolulu, Kauai, Kalawao | 59 hr |
| Aug 21, 9:00 PM HST | Small Craft Advisory | HFO | 54 hr | |
| Aug 22, 9:53 AM HST | Gale Warning | HFO | 30 hr | |
| Aug 22, 1:48 PM HST | Wind Advisory | HFO | Hawaii, Honolulu, Kauai, Kalawao | 37 hr |
| Aug 23, 3:00 AM HST | Small Craft Advisory | HFO | 24 hr | |
| Aug 23, 11:08 AM HST | Areal Flood Advisory | HFO | Kalawao | 3 hr |
| Aug 23, 12:51 PM HST | Areal Flood Advisory | HFO | Hawaii | 7 hr |
| Aug 23, 1:43 PM HST | Areal Flood Advisory | HFO | Kalawao | 6 hr |
| Aug 23, 2:10 PM HST | Areal Flood Advisory | HFO | Honolulu | 8 hr |
| Aug 24, 3:00 AM HST | Small Craft Advisory | HFO | 3 days | |
| Aug 25, 12:14 PM HST | Red Flag Warning | HFO | 29 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 Watch | 1 |
| Areal Flood Advisory | 9 |
| Wind and dust | |
| Wind Advisory | 2 |
| Fire | |
| Red Flag Warning | 1 |
| Coast and beach | |
| High Surf Advisory | 2 |
| Marine | |
| Gale Warning | 2 |
| Small Craft Advisory | 6 |
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 archive20202022
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.