Alert archive / Hawaii / 2021
Weather alerts in Hawaii, May 2021
10 weather alerts in May 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 May 2021. Tap one for its archive.
- Alerts
- 10
- Warnings
- 0
- Watches
- 2
- Advisories
- 7
- Busiest day
- May 5, 20213 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 |
|---|---|---|---|---|
| Apr 30, 3:34 PM HST | High Surf Advisory | HFO | Honolulu, Kauai | 18 hr |
| May 3, 8:54 PM HST | Areal Flood Advisory | HFO | Hawaii | 87 min |
| May 4, 4:30 PM HST | Areal Flood Advisory | HFO | Kalawao | 100 min |
| May 4, 9:01 PM HST | Small Craft Advisory | HFO | 30 hr | |
| May 5, 9:17 AM HST | Flash Flood Watch | HFO | Hawaii, Honolulu, Kauai, Kalawao | 54 hr |
| May 6, 3:22 AM HST | Winter Storm Watch | HFO | Hawaii | 12 hr |
| May 6, 3:26 PM HST | Winter Weather Advisory | HFO | Hawaii | 12 hr |
| May 6, 9:56 PM HST | Areal Flood Advisory | HFO | Honolulu | 3 hr |
| May 7, 3:00 AM HST | Small Craft Advisory | HFO | 16 days | |
| May 24, 3:09 PM HST | Coastal Flood Statement | HFO | Hawaii, Honolulu, Kauai, Kalawao | 4 days |
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 | 3 |
| Winter | |
| Winter Storm Watch | 1 |
| Winter Weather Advisory | 1 |
| Coast and beach | |
| High Surf Advisory | 1 |
| Coastal Flood Statement | 1 |
| Marine | |
| Small Craft Advisory | 2 |
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.