Alert archive / Virginia / Albemarle County
Weather alerts in Albemarle County, Virginia, 2020
152 weather alerts in 2020, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Albemarle County and its neighbors
Each county as a circle sized by its count in 2020. Tap one for its archive.
- Alerts
- 152
- Warnings
- 66
- Watches
- 35
- Advisories
- 25
- Busiest month
- August38 alerts
- Busiest day
- August 6, 202012 alerts
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
0 of 3 tornado warnings covering Albemarle County in 2020 had a tornado report inside them.
Albemarle County, 2020
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 3 | 0 | 100% | 0 | ||
| Severe thunderstorm warnings | 28 | 19 | 32% | 26 | 88% | 21 min |
| Flash flood warnings | 3 | 0 | 100% | 0 |
Each office's whole area, 2020
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Baltimore/Washington: tornado warnings | 27 | 6 | 78% | 15 | 47% | 9 min |
| NWS Baltimore/Washington: severe thunderstorm warnings | 456 | 314 | 31% | 1,047 | 79% | 23 min |
| NWS Baltimore/Washington: flash flood warnings | 66 | 34 | 48% | 130 | 90% | 72 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, Eastern Time. Each opens its own page with the text, the map, the radar and the sounding.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Jan 4, 5:12 PM EST | Wind Advisory | LWX | 16 hr |
| Jan 6, 1:49 PM EST | Winter Weather Advisory | LWX | 29 hr |
| Jan 8, 3:40 AM EST | Wind Advisory | LWX | 13 hr |
| Jan 11, 3:38 AM EST | High Wind Watch | LWX | 10 hr |
| Jan 11, 1:13 PM EST | Wind Advisory | LWX | 20 hr |
| Jan 11, 10:59 PM EST | Mesoscale Discussion | SPC | 91 min |
| Jan 15, 2:50 PM EST | Wind Advisory | LWX | 22 hr |
| Jan 17, 1:33 PM EST | Winter Weather Advisory | LWX | 29 hr |
| Feb 2, 7:04 PM EST | Wind Advisory | LWX | 7 hr |
| Feb 5, 3:23 PM EST | Flood Watch | LWX | 35 hr |
| Feb 6, 9:30 PM EST | Wind Advisory | LWX | 20 hr |
| Feb 26, 12:54 AM EST | Dense Fog Advisory | LWX | 8 hr |
| Feb 26, 3:15 AM EST | Wind Advisory | LWX | 31 hr |
| Feb 26, 2:49 PM EST | Mesoscale Discussion | SPC | 116 min |
| Feb 26, 9:24 PM EST | Severe Thunderstorm Warning | LWX | 51 min |
| Apr 7, 2:57 PM EDT | Mesoscale Discussion | SPC | 93 min |
| Apr 8, 6:00 AM EDT | Severe Thunderstorm Warning | LWX | 45 min |
| Apr 8, 8:13 PM EDT | Wind Advisory | LWX | 23 hr |
| Apr 9, 2:03 AM EDT | Severe Thunderstorm Watch | SPC | 3 hr |
| Apr 9, 3:36 AM EDT | Mesoscale Discussion | SPC | 84 min |
| Apr 9, 7:38 PM EDT | Wind Advisory | LWX | 22 hr |
| Apr 9, 7:47 PM EDT | Freeze Watch | LWX | 19 hr |
| Apr 10, 2:28 PM EDT | Freeze Warning | LWX | 19 hr |
| Apr 12, 4:47 AM EDT | High Wind Watch | LWX | 8 hr |
| Apr 12, 12:35 PM EDT | High Wind Warning | LWX | 26 hr |
| Apr 12, 12:35 PM EDT | Wind Advisory | LWX | 29 hr |
| Apr 13, 1:51 AM EDT | Flash Flood Watch | LWX | 5 hr |
| Apr 13, 10:14 AM EDT | Areal Flood Warning | LWX | 3 hr |
| Apr 13, 10:34 AM EDT | Mesoscale Discussion | SPC | 86 min |
| Apr 14, 4:25 AM EDT | Winter Weather Advisory | LWX | 27 hr |
| Apr 15, 3:13 AM EDT | Freeze Watch | LWX | 10 hr |
| Apr 15, 1:09 PM EDT | Freeze Watch | LWX | 24 hr |
| Apr 15, 1:09 PM EDT | Freeze Warning | LWX | 18 hr |
| Apr 16, 1:19 PM EDT | Freeze Warning | LWX | 20 hr |
| Apr 18, 9:22 PM EDT | Freeze Warning | LWX | 12 hr |
| Apr 21, 4:04 AM EDT | Freeze Warning | LWX | 27 hr |
| Apr 29, 4:24 AM EDT | Flood Watch | LWX | 39 hr |
| Apr 30, 9:03 AM EDT | Areal Flood Warning | LWX | 9 hr |
| May 7, 4:29 AM EDT | Freeze Watch | LWX | 10 hr |
| May 7, 2:16 PM EDT | Freeze Warning | LWX | 43 hr |
| May 8, 3:30 AM EDT | Freeze Watch | LWX | 24 hr |
| May 9, 3:36 AM EDT | Freeze Warning | LWX | 28 hr |
| May 10, 1:47 PM EDT | Freeze Watch | LWX | 14 hr |
| May 11, 3:43 AM EDT | Freeze Warning | LWX | 29 hr |
| May 21, 3:48 AM EDT | Flash Flood Watch | LWX | 15 hr |
| May 23, 4:09 AM EDT | Dense Fog Advisory | LWX | 4 hr |
| Jun 4, 2:02 PM EDT | Mesoscale Discussion | SPC | 118 min |
| Jun 4, 2:29 PM EDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Jun 4, 4:17 PM EDT | Severe Thunderstorm Warning | LWX | 43 min |
| Jun 4, 4:22 PM EDT | Severe Thunderstorm Warning | LWX | 20 min |
| Jun 4, 4:41 PM EDT | Mesoscale Discussion | SPC | 94 min |
| Jun 4, 4:56 PM EDT | Severe Thunderstorm Warning | LWX | 16 min |
| Jun 4, 5:09 PM EDT | Severe Thunderstorm Warning | LWX | 36 min |
| Jun 4, 5:38 PM EDT | Severe Thunderstorm Warning | LWX | 16 min |
| Jun 5, 3:40 AM EDT | Flash Flood Watch | LWX | 17 hr |
| Jun 5, 1:15 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 6, 6:07 PM EDT | Mesoscale Discussion | SPC | 113 min |
| Jun 20, 10:45 AM EDT | Flash Flood Watch | LWX | 10 hr |
| Jun 22, 1:58 PM EDT | Mesoscale Discussion | SPC | 3 hr |
| Jun 25, 1:48 PM EDT | Mesoscale Discussion | SPC | 117 min |
| Jul 1, 4:02 PM EDT | Severe Thunderstorm Warning | LWX | 28 min |
| Jul 1, 4:10 PM EDT | Severe Thunderstorm Warning | LWX | 20 min |
| Jul 5, 3:07 PM EDT | Severe Thunderstorm Warning | LWX | 38 min |
| Jul 5, 4:02 PM EDT | Severe Thunderstorm Warning | LWX | 25 min |
| Jul 5, 4:04 PM EDT | Severe Thunderstorm Warning | LWX | 41 min |
| Jul 5, 4:32 PM EDT | Severe Thunderstorm Warning | LWX | 26 min |
| Jul 5, 5:42 PM EDT | Severe Thunderstorm Warning | LWX | 48 min |
| Jul 6, 1:38 PM EDT | Severe Thunderstorm Watch | SPC | 9 hr |
| Jul 10, 5:47 PM EDT | Severe Thunderstorm Warning | LWX | 26 min |
| Jul 17, 1:47 PM EDT | Mesoscale Discussion | SPC | 118 min |
| Jul 21, 1:00 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 21, 5:39 PM EDT | Severe Thunderstorm Warning | LWX | 51 min |
| Jul 22, 10:48 AM EDT | Mesoscale Discussion | SPC | 117 min |
| Jul 22, 12:01 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jul 22, 12:39 PM EDT | Severe Thunderstorm Warning | LWX | 36 min |
| Jul 22, 12:57 PM EDT | Severe Thunderstorm Warning | LWX | 48 min |
| Jul 22, 1:36 PM EDT | Flash Flood Watch | LWX | 4 hr |
| Jul 22, 1:39 PM EDT | Severe Thunderstorm Warning | LWX | 25 min |
| Jul 22, 2:17 PM EDT | Flash Flood Warning | LWX | 3 hr |
| Jul 22, 2:35 PM EDT | Severe Thunderstorm Warning | LWX | 55 min |
| Jul 23, 5:57 PM EDT | Areal Flood Warning | LWX | 3 hr |
| Jul 23, 6:04 PM EDT | Severe Thunderstorm Warning | LWX | 56 min |
| Jul 23, 6:38 PM EDT | Severe Thunderstorm Warning | LWX | 52 min |
| Jul 24, 4:22 PM EDT | Mesoscale Discussion | SPC | 83 min |
| Jul 24, 5:42 PM EDT | Severe Thunderstorm Warning | LWX | 48 min |
| Jul 28, 3:19 PM EDT | Mesoscale Discussion | SPC | 116 min |
| Jul 30, 10:01 PM EDT | Flash Flood Watch | LWX | 20 hr |
| Jul 31, 1:04 PM EDT | Mesoscale Discussion | SPC | 116 min |
| Aug 1, 6:53 PM EDT | Flash Flood Watch | LWX | 7 hr |
| Aug 1, 7:05 PM EDT | Mesoscale Discussion | SPC | 115 min |
| Aug 2, 2:18 PM EDT | Mesoscale Discussion | SPC | 57 min |
| Aug 2, 3:28 PM EDT | Flash Flood Watch | LWX | 45 hr |
| Aug 3, 3:55 PM EDT | Severe Thunderstorm Warning | LWX | 50 min |
| Aug 5, 10:51 PM EDT | Flash Flood Watch | LWX | 25 hr |
| Aug 5, 11:30 PM EDT | Areal Flood Warning | LWX | 4 hr |
| Aug 6, 1:20 AM EDT | Areal Flood Warning | LWX | 4 hr |
| Aug 6, 2:08 PM EDT | Mesoscale Discussion | SPC | 3 hr |
| Aug 6, 4:09 PM EDT | Tornado Warning | LWX | 36 min |
| Aug 6, 4:24 PM EDT | Severe Thunderstorm Warning | LWX | 51 min |
| Aug 6, 4:34 PM EDT | Tornado Warning | LWX | 26 min |
| Aug 6, 4:39 PM EDT | Areal Flood Warning | LWX | 5 hr |
| Aug 6, 4:55 PM EDT | Severe Thunderstorm Warning | LWX | 65 min |
| Aug 6, 4:59 PM EDT | Tornado Warning | LWX | 7 min |
| Aug 6, 5:08 PM EDT | Areal Flood Warning | LWX | 4 hr |
| Aug 6, 5:25 PM EDT | Flash Flood Warning | LWX | 2 hr |
| Aug 7, 3:46 AM EDT | Flash Flood Watch | LWX | 21 hr |
| Aug 8, 10:39 PM EDT | Areal Flood Warning | LWX | 3 hr |
| Aug 11, 3:19 PM EDT | Flash Flood Watch | LWX | 52 hr |
| Aug 11, 9:16 PM EDT | Severe Thunderstorm Warning | LWX | 30 min |
| Aug 12, 1:15 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 12, 6:26 PM EDT | Flash Flood Warning | LWX | 4 hr |
| Aug 12, 7:08 PM EDT | Areal Flood Warning | LWX | 3 hr |
| Aug 14, 9:58 PM EDT | Flash Flood Watch | LWX | 16 hr |
| Aug 14, 11:16 PM EDT | Areal Flood Warning | LWX | 6 hr |
| Aug 15, 4:00 AM EDT | Areal Flood Warning | LWX | 5 hr |
| Aug 17, 4:50 PM EDT | Severe Thunderstorm Warning | LWX | 23 min |
| Aug 21, 4:20 AM EDT | Flash Flood Watch | LWX | 24 hr |
| Aug 22, 12:09 PM EDT | Flash Flood Watch | LWX | 12 hr |
| Aug 22, 8:29 PM EDT | Areal Flood Warning | LWX | 6 hr |
| Aug 25, 3:34 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Aug 25, 7:07 PM EDT | Mesoscale Discussion | SPC | 113 min |
| Aug 25, 8:50 PM EDT | Mesoscale Discussion | SPC | 115 min |
| Aug 28, 7:50 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 30, 7:21 PM EDT | Flood Watch | LWX | 26 hr |
| Aug 31, 2:01 PM EDT | Areal Flood Warning | LWX | 6 hr |
| Aug 31, 5:13 PM EDT | Areal Flood Warning | LWX | 6 hr |
| Sep 3, 3:06 PM EDT | Mesoscale Discussion | SPC | 114 min |
| Sep 3, 3:42 PM EDT | Tornado Watch | SPC | 6 hr |
| Sep 20, 1:43 PM EDT | Frost Advisory | LWX | 19 hr |
| Sep 29, 2:36 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Oct 16, 2:39 PM EDT | Frost Advisory | LWX | 19 hr |
| Oct 17, 2:25 PM EDT | Frost Advisory | LWX | 20 hr |
| Oct 28, 3:05 PM EDT | Flood Watch | LWX | 25 hr |
| Oct 29, 3:22 PM EDT | Areal Flood Warning | LWX | 6 hr |
| Oct 29, 8:44 PM EDT | Frost Advisory | LWX | 36 hr |
| Oct 31, 6:59 PM EDT | Wind Advisory | LWX | 44 hr |
| Nov 9, 4:44 AM EST | Dense Fog Advisory | LWX | 5 hr |
| Nov 11, 10:46 AM EST | Flash Flood Watch | LWX | 16 hr |
| Nov 11, 9:48 PM EST | Areal Flood Warning | LWX | 26 hr |
| Nov 11, 11:21 PM EST | Areal Flood Warning | LWX | 24 hr |
| Nov 12, 9:55 AM EST | River Flood Warning | RNK | 10 hr |
| Nov 14, 2:06 PM EST | Wind Advisory | LWX | 41 hr |
| Nov 30, 10:15 AM EST | Areal Flood Warning | LWX | 6 hr |
| Nov 30, 10:47 AM EST | Areal Flood Warning | LWX | 2 hr |
| Dec 13, 2:25 PM EST | Winter Weather Advisory | LWX | 23 hr |
| Dec 14, 4:43 AM EST | Winter Storm Watch | LWX | 35 hr |
| Dec 15, 4:09 AM EST | Winter Storm Warning | LWX | 46 hr |
| Dec 18, 5:27 AM EST | Dense Fog Advisory | LWX | 14 hr |
| Dec 23, 4:27 AM EST | Flash Flood Watch | LWX | 47 hr |
| Dec 23, 9:07 PM EST | Wind Advisory | LWX | 29 hr |
| Dec 24, 3:11 PM EST | Areal Flood Warning | LWX | 10 hr |
| Dec 24, 6:06 PM EST | Areal Flood Warning | LWX | 16 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 Warning | 28 |
| Tornado Warning | 3 |
| Severe Thunderstorm Watch | 5 |
| Tornado Watch | 1 |
| Mesoscale Discussion | 26 |
| Flooding | |
| Areal Flood Warning | 21 |
| Flash Flood Warning | 3 |
| River Flood Warning | 1 |
| Flash Flood Watch | 16 |
| Flood Watch | 4 |
| Winter | |
| Winter Storm Warning | 1 |
| Winter Storm Watch | 1 |
| Winter Weather Advisory | 4 |
| Cold | |
| Freeze Warning | 8 |
| Freeze Watch | 6 |
| Frost Advisory | 4 |
| Wind and dust | |
| High Wind Warning | 1 |
| High Wind Watch | 2 |
| Wind Advisory | 13 |
| Fog and smoke | |
| Dense Fog Advisory | 4 |
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordForecastThe 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. Warning verification from the Mesonet's Cow. Rebuilt daily.