Alert archive / U.S. Virgin Islands
Weather alerts in U.S. Virgin Islands, 2023
144 weather alerts in 2023, 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.
- Alerts
- 144
- Warnings
- 15
- Watches
- 7
- Advisories
- 85
- Busiest month
- September34 alerts
- Busiest day
- October 4, 20236 alerts
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
U.S. Virgin Islands, 2023
| 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 | 2 | 0 | 100% | 0 |
Each office's whole area, 2023
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS JSJ: tornado warnings | 0 | 6 | 0% | |||
| NWS JSJ: severe thunderstorm warnings | 0 | 19 | 0% | |||
| NWS JSJ: flash flood warnings | 67 | 35 | 48% | 164 | 62% | 79 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, Central Time. Each opens its own page with the text, the map, the radar and the sounding.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jan 4, 2:00 PM CST | Rip Current Statement | JSJ | 59 hr | |
| Jan 14, 2:26 PM CST | Rip Current Statement | JSJ | 4 days | |
| Jan 15, 2:57 PM CST | High Surf Advisory | JSJ | 3 days | |
| Jan 19, 2:00 AM CST | Rip Current Statement | JSJ | 24 hr | |
| Jan 20, 2:05 AM CST | Rip Current Statement | JSJ | 23 hr | |
| Jan 21, 1:29 AM CST | Rip Current Statement | JSJ | 11 hr | |
| Jan 27, 2:29 AM CST | Rip Current Statement | JSJ | 7 days | |
| Jan 27, 1:55 PM CST | Rip Current Statement | JSJ | 5 days | |
| Feb 4, 1:47 PM CST | Rip Current Statement | JSJ | 9 days | |
| Feb 5, 2:29 PM CST | High Surf Advisory | JSJ | 50 hr | |
| Feb 7, 9:27 AM CST | Rip Current Statement | JSJ | 5 days | |
| Feb 8, 2:33 PM CST | Coastal Flood Advisory | JSJ | 41 hr | |
| Feb 8, 2:33 PM CST | Rip Current Statement | JSJ | 4 days | |
| Feb 8, 2:33 PM CST | High Surf Advisory | JSJ | 3 days | |
| Feb 15, 2:59 AM CST | Rip Current Statement | JSJ | 5 days | |
| Feb 26, 2:16 PM CST | Rip Current Statement | JSJ | 8 days | |
| Feb 26, 2:16 PM CST | High Surf Advisory | JSJ | 4 days | |
| Mar 2, 2:49 PM CST | High Surf Advisory | JSJ | 61 hr | |
| Mar 7, 7:47 AM CST | Rip Current Statement | JSJ | 14 days | |
| Mar 8, 3:57 PM CST | High Surf Advisory | JSJ | 12 days | |
| Mar 9, 2:45 PM CST | Coastal Flood Advisory | JSJ | 71 hr | |
| Mar 13, 8:00 PM CDT | High Surf Advisory | JSJ | 7 days | |
| Mar 16, 3:17 AM CDT | Rip Current Statement | JSJ | 5 days | |
| Mar 22, 3:00 PM CDT | Rip Current Statement | JSJ | 14 days | |
| Mar 30, 3:27 PM CDT | Rip Current Statement | JSJ | 6 days | |
| Apr 6, 8:50 AM CDT | Areal Flood Advisory | JSJ | 5 hr | |
| Apr 8, 3:22 AM CDT | Rip Current Statement | JSJ | 24 hr | |
| Apr 10, 3:00 AM CDT | Rip Current Statement | JSJ | 3 days | |
| May 2, 3:22 PM CDT | Rip Current Statement | JSJ | 65 hr | |
| Jun 2, 7:55 AM CDT | Excessive Heat Watch | JSJ | 43 hr | |
| Jun 9, 4:41 AM CDT | Excessive Heat Watch | JSJ | 22 hr | |
| Jun 9, 4:41 AM CDT | Heat Advisory | JSJ | 11 hr | |
| Jun 10, 3:09 AM CDT | Excessive Heat Watch | JSJ | 25 hr | |
| Jun 10, 3:09 AM CDT | Heat Advisory | JSJ | 13 hr | |
| Jun 11, 3:42 AM CDT | Excessive Heat Watch | JSJ | 24 hr | |
| Jun 11, 3:42 AM CDT | Heat Advisory | JSJ | 12 hr | |
| Jun 15, 3:55 AM CDT | Excessive Heat Watch | JSJ | 23 hr | |
| Jun 22, 4:06 PM CDT | Rip Current Statement | JSJ | 49 hr | |
| Jun 27, 2:34 AM CDT | Heat Advisory | JSJ | 13 hr | |
| Jun 29, 4:26 PM CDT | Areal Flood Advisory | JSJ | 2 hr | |
| Jul 31, 4:21 AM CDT | Heat Advisory | JSJ | 11 hr | |
| Aug 5, 3:18 AM CDT | Heat Advisory | JSJ | 12 hr | |
| Aug 6, 9:14 AM CDT | Heat Advisory | JSJ | 7 hr | |
| Aug 7, 3:23 AM CDT | Heat Advisory | JSJ | 13 hr | |
| Aug 9, 3:28 AM CDT | Heat Advisory | JSJ | 12 hr | |
| Aug 10, 3:11 AM CDT | Excessive Heat Warning | JSJ | 10 hr | |
| Aug 10, 3:11 AM CDT | Excessive Heat Warning | JSJ | 12 hr | |
| Aug 11, 3:56 AM CDT | Excessive Heat Warning | JSJ | 11 hr | |
| Aug 12, 3:02 AM CDT | Heat Advisory | JSJ | 12 hr | |
| Aug 13, 3:03 AM CDT | Heat Advisory | JSJ | 12 hr | |
| Aug 14, 3:24 AM CDT | Excessive Heat Warning | JSJ | 13 hr | |
| Aug 15, 3:09 AM CDT | Heat Advisory | JSJ | 13 hr | |
| Aug 16, 3:52 AM CDT | Excessive Heat Warning | JSJ | 12 hr | |
| Aug 17, 3:32 AM CDT | Heat Advisory | JSJ | 12 hr | |
| Aug 17, 4:02 PM CDT | Rip Current Statement | JSJ | 49 hr | |
| Aug 18, 3:39 AM CDT | Heat Advisory | JSJ | 12 hr | |
| Aug 19, 3:42 AM CDT | Heat Advisory | JSJ | 12 hr | |
| Aug 20, 2:59 AM CDT | Rip Current Statement | JSJ | 38 hr | |
| Aug 20, 3:40 AM CDT | Heat Advisory | JSJ | 6 hr | |
| Aug 27, 3:28 AM CDT | Heat Advisory | JSJ | 12 hr | |
| Aug 28, 11:54 AM CDT | Excessive Heat Warning | JSJ | 4 hr | |
| Aug 28, 11:54 AM CDT | Heat Advisory | JSJ | 4 hr | |
| Aug 31, 3:00 AM CDT | Excessive Heat Warning | JSJ | 13 hr | |
| Aug 31, 3:00 AM CDT | Heat Advisory | JSJ | 13 hr | |
| Sep 1, 2:55 AM CDT | Heat Advisory | JSJ | 12 hr | |
| Sep 2, 3:24 AM CDT | Heat Advisory | JSJ | 12 hr | |
| Sep 2, 4:13 AM CDT | Rip Current Statement | JSJ | 6 hr | |
| Sep 2, 4:13 AM CDT | Rip Current Statement | JSJ | 5 days | |
| Sep 3, 3:16 AM CDT | Heat Advisory | JSJ | 12 hr | |
| Sep 4, 2:30 AM CDT | Heat Advisory | JSJ | 12 hr | |
| Sep 8, 8:49 PM CDT | Rip Current Statement | JSJ | 13 days | |
| Sep 9, 2:59 AM CDT | Heat Advisory | JSJ | 13 hr | |
| Sep 9, 3:01 AM CDT | High Surf Advisory | JSJ | 6 days | |
| Sep 10, 10:18 AM CDT | Excessive Heat Warning | JSJ | 6 hr | |
| Sep 10, 10:18 AM CDT | Heat Advisory | JSJ | 6 hr | |
| Sep 11, 3:15 AM CDT | Heat Advisory | JSJ | 12 hr | |
| Sep 11, 3:36 AM CDT | Rip Current Statement | JSJ | 16 hr | |
| Sep 12, 3:03 AM CDT | Heat Advisory | JSJ | 13 hr | |
| Sep 13, 3:14 AM CDT | Excessive Heat Warning | JSJ | 13 hr | |
| Sep 13, 3:14 AM CDT | Heat Advisory | JSJ | 13 hr | |
| Sep 14, 3:56 AM CDT | Heat Advisory | JSJ | 12 hr | |
| Sep 15, 3:56 AM CDT | Heat Advisory | JSJ | 12 hr | |
| Sep 16, 4:40 AM CDT | Heat Advisory | JSJ | 11 hr | |
| Sep 17, 4:59 AM CDT | Heat Advisory | JSJ | 11 hr | |
| Sep 18, 3:25 AM CDT | Heat Advisory | JSJ | 13 hr | |
| Sep 20, 3:25 AM CDT | Heat Advisory | JSJ | 12 hr | |
| Sep 22, 3:07 AM CDT | Heat Advisory | JSJ | 13 hr | |
| Sep 23, 3:39 AM CDT | Excessive Heat Warning | JSJ | 12 hr | |
| Sep 23, 3:39 AM CDT | Heat Advisory | JSJ | 12 hr | |
| Sep 24, 3:31 AM CDT | Heat Advisory | JSJ | 12 hr | |
| Sep 25, 3:29 AM CDT | Excessive Heat Warning | JSJ | 13 hr | |
| Sep 25, 3:29 AM CDT | Heat Advisory | JSJ | 13 hr | |
| Sep 26, 3:11 AM CDT | Heat Advisory | JSJ | 13 hr | |
| Sep 26, 7:29 PM CDT | Rip Current Statement | JSJ | 70 hr | |
| Sep 27, 3:06 AM CDT | Heat Advisory | JSJ | 12 hr | |
| Sep 28, 3:25 AM CDT | Heat Advisory | JSJ | 13 hr | |
| Sep 29, 3:23 AM CDT | Heat Advisory | JSJ | 13 hr | |
| Sep 30, 3:22 AM CDT | Heat Advisory | JSJ | 11 hr | |
| Oct 1, 3:00 AM CDT | Heat Advisory | JSJ | 7 hr | |
| Oct 2, 3:15 AM CDT | Heat Advisory | JSJ | 13 hr | |
| Oct 3, 3:38 AM CDT | Heat Advisory | JSJ | 30 min | |
| Oct 3, 4:08 AM CDT | Heat Advisory | JSJ | 11 hr | |
| Oct 3, 9:08 PM CDT | Areal Flood Advisory | JSJ | 23 min | |
| Oct 3, 9:21 PM CDT | Areal Flood Advisory | JSJ | 10 min | |
| Oct 3, 9:31 PM CDT | Flash Flood Warning | JSJ | 4 hr | |
| Oct 3, 9:31 PM CDT | Flash Flood Warning | JSJ | 4 hr | |
| Oct 4, 1:45 AM CDT | Areal Flood Advisory | JSJ | 5 hr | |
| Oct 4, 1:46 AM CDT | Areal Flood Advisory | JSJ | 8 hr | |
| Oct 4, 9:22 PM CDT | Areal Flood Advisory | JSJ | 5 hr | |
| Oct 5, 8:02 AM CDT | Heat Advisory | JSJ | 7 hr | |
| Oct 6, 2:34 AM CDT | Heat Advisory | JSJ | 12 hr | |
| Oct 8, 3:05 AM CDT | Heat Advisory | JSJ | 13 hr | |
| Oct 9, 3:43 AM CDT | Rip Current Statement | JSJ | 4 days | |
| Oct 9, 3:49 AM CDT | Excessive Heat Warning | JSJ | 12 hr | |
| Oct 9, 3:49 AM CDT | Heat Advisory | JSJ | 12 hr | |
| Oct 12, 4:00 AM CDT | Heat Advisory | JSJ | 12 hr | |
| Oct 13, 3:04 AM CDT | Heat Advisory | JSJ | 14 hr | |
| Oct 14, 3:30 AM CDT | Heat Advisory | JSJ | 12 hr | |
| Oct 15, 2:50 AM CDT | Heat Advisory | JSJ | 12 hr | |
| Oct 16, 3:06 AM CDT | Excessive Heat Warning | JSJ | 13 hr | |
| Oct 17, 3:07 AM CDT | Heat Advisory | JSJ | 13 hr | |
| Oct 19, 3:23 AM CDT | Heat Advisory | JSJ | 13 hr | |
| Oct 23, 3:33 AM CDT | Heat Advisory | JSJ | 11 hr | |
| Oct 24, 8:58 AM CDT | Heat Advisory | JSJ | 7 hr | |
| Oct 24, 3:13 PM CDT | Rip Current Statement | JSJ | 6 days | |
| Oct 26, 9:57 AM CDT | High Surf Advisory | JSJ | 3 days | |
| Oct 27, 12:29 AM CDT | Areal Flood Advisory | JSJ | 2 hr | |
| Oct 27, 8:21 AM CDT | Flood Watch | JSJ | 27 min | |
| Oct 27, 8:52 AM CDT | Flood Watch | JSJ | 35 hr | |
| Oct 30, 7:44 AM CDT | Areal Flood Advisory | JSJ | 61 min | |
| Nov 10, 3:51 AM CST | Areal Flood Advisory | JSJ | 54 min | |
| Nov 10, 7:12 AM CST | Areal Flood Advisory | JSJ | 3 hr | |
| Nov 16, 2:00 AM CST | Rip Current Statement | JSJ | 5 days | |
| Nov 17, 2:28 AM CST | High Surf Advisory | JSJ | 72 hr | |
| Nov 21, 2:27 PM CST | Rip Current Statement | JSJ | 5 days | |
| Nov 30, 2:10 PM CST | Rip Current Statement | JSJ | 3 days | |
| Dec 4, 1:07 AM CST | Rip Current Statement | JSJ | 39 hr | |
| Dec 7, 4:13 PM CST | Rip Current Statement | JSJ | 18 days | |
| Dec 12, 3:36 PM CST | Wind Advisory | JSJ | 39 hr | |
| Dec 13, 2:03 AM CST | High Surf Advisory | JSJ | 4 days | |
| Dec 18, 6:45 PM CST | Rip Current Statement | JSJ | 9 hr | |
| Dec 19, 2:11 PM CST | High Surf Advisory | JSJ | 6 days | |
| Dec 20, 8:40 AM CST | Rip Current Statement | JSJ | 66 hr | |
| Dec 23, 2:00 PM CST | Rip Current Statement | JSJ | 37 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 |
| Flood Watch | 2 |
| Areal Flood Advisory | 11 |
| Heat | |
| Excessive Heat Warning | 13 |
| Excessive Heat Watch | 5 |
| Heat Advisory | 59 |
| Wind and dust | |
| Wind Advisory | 1 |
| Coast and beach | |
| Coastal Flood Advisory | 2 |
| High Surf Advisory | 12 |
| Rip Current Statement | 37 |
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordThe radar archive20222024
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.