Alert archive / California / Inyo County
Weather alerts in Inyo County, California, 2009
80 weather alerts in 2009, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Inyo County and its neighbors
Each county as a circle sized by its count in 2009. Tap one for its archive.
- Alerts
- 80
- Warnings
- 31
- Watches
- 21
- Advisories
- 28
- Busiest month
- March11 alerts
- Busiest day
- July 21, 20095 alerts
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
Inyo County, 2009
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 0 | 0 | ||||
| Severe thunderstorm warnings | 1 | 0 | 100% | 0 | ||
| Flash flood warnings | 8 | 1 | 88% | 1 | 100% | 18 min |
Each office's whole area, 2009
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Las Vegas, NV: severe thunderstorm warnings | 53 | 7 | 87% | 39 | 26% | 17 min |
| NWS Las Vegas, NV: flash flood warnings | 32 | 7 | 78% | 19 | 37% | 55 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, Pacific Time. Each opens its own page with the text, the map, the radar and the sounding.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Jan 2, 5:28 PM PST | Wind Advisory | VEF | 4 hr |
| Feb 4, 3:44 PM PST | Winter Storm Watch | VEF | 48 hr |
| Feb 5, 3:54 PM PST | Winter Storm Warning | VEF | 60 hr |
| Feb 5, 3:54 PM PST | Winter Weather Advisory | VEF | 36 hr |
| Feb 7, 4:09 AM PST | Winter Weather Advisory | VEF | 24 hr |
| Feb 7, 3:06 PM PST | Flash Flood Warning | VEF | 3 hr |
| Feb 7, 5:54 PM PST | Flash Flood Warning | VEF | 2 hr |
| Feb 8, 4:16 AM PST | Winter Weather Advisory | VEF | 39 hr |
| Feb 14, 3:52 PM PST | Winter Storm Watch | VEF | 35 hr |
| Feb 15, 3:46 PM PST | Winter Storm Warning | VEF | 32 hr |
| Mar 1, 3:38 PM PST | High Wind Watch | VEF | 13 hr |
| Mar 2, 4:42 AM PST | Wind Advisory | VEF | 39 hr |
| Mar 3, 4:03 AM PST | Winter Weather Advisory | VEF | 34 hr |
| Mar 8, 4:48 AM PDT | High Wind Watch | VEF | 10 hr |
| Mar 8, 3:10 PM PDT | Wind Advisory | VEF | 33 hr |
| Mar 9, 12:15 PM PDT | High Wind Warning | VEF | 9 hr |
| Mar 20, 10:03 PM PDT | Wind Advisory | VEF | 47 hr |
| Mar 25, 3:33 PM PDT | Wind Advisory | VEF | 28 hr |
| Mar 28, 2:07 PM PDT | Wind Advisory | VEF | 37 hr |
| Mar 29, 8:00 AM PDT | High Wind Warning | VEF | 19 hr |
| Mar 31, 3:34 PM PDT | High Wind Watch | VEF | 47 hr |
| Apr 1, 3:49 PM PDT | Wind Advisory | VEF | 53 hr |
| Apr 2, 5:01 PM PDT | High Wind Warning | VEF | 17 hr |
| Apr 2, 9:41 PM PDT | Wind Advisory | VEF | 24 hr |
| Apr 6, 6:48 PM PDT | Wind Advisory | VEF | 36 hr |
| Apr 12, 3:03 PM PDT | High Wind Watch | VEF | 24 hr |
| Apr 13, 3:27 PM PDT | Wind Advisory | VEF | 36 hr |
| Apr 22, 3:08 PM PDT | Wind Advisory | VEF | 41 hr |
| Apr 23, 3:11 PM PDT | High Wind Warning | VEF | 19 hr |
| Apr 23, 3:11 PM PDT | Wind Advisory | VEF | 40 hr |
| May 1, 2:42 PM PDT | Winter Weather Advisory | VEF | 14 hr |
| May 3, 3:53 AM PDT | High Wind Warning | VEF | 16 hr |
| May 15, 1:10 PM PDT | Excessive Heat Watch | VEF | 24 hr |
| Jul 15, 2:31 AM PDT | Excessive Heat Watch | VEF | 36 hr |
| Jul 16, 2:02 PM PDT | Excessive Heat Warning | VEF | 62 hr |
| Jul 20, 2:44 PM PDT | Flash Flood Warning | VEF | 90 min |
| Jul 20, 5:52 PM PDT | Flash Flood Warning | VEF | 57 min |
| Jul 20, 6:10 PM PDT | Flash Flood Warning | VEF | 53 min |
| Jul 20, 6:43 PM PDT | Flash Flood Warning | VEF | 2 hr |
| Jul 20, 7:23 PM PDT | Severe Thunderstorm Warning | VEF | 37 min |
| Jul 20, 8:26 PM PDT | Flash Flood Warning | VEF | 94 min |
| Jul 25, 2:29 PM PDT | Flash Flood Warning | VEF | 2 hr |
| Jul 28, 9:26 AM PDT | Excessive Heat Warning | VEF | 11 hr |
| Aug 4, 2:37 PM PDT | Red Flag Warning | VEF | 54 hr |
| Aug 5, 3:10 PM PDT | Wind Advisory | VEF | 30 hr |
| Aug 20, 2:43 PM PDT | Excessive Heat Warning | VEF | 28 hr |
| Aug 27, 3:35 AM PDT | Excessive Heat Watch | VEF | 25 hr |
| Aug 27, 3:35 AM PDT | Excessive Heat Warning | VEF | 39 hr |
| Aug 28, 4:22 AM PDT | Excessive Heat Warning | VEF | 39 hr |
| Sep 27, 2:05 PM PDT | Fire Weather Watch | VEF | 26 hr |
| Sep 27, 2:05 PM PDT | High Wind Watch | VEF | 38 hr |
| Sep 28, 3:09 PM PDT | Wind Advisory | VEF | 37 hr |
| Sep 28, 3:16 PM PDT | Red Flag Warning | VEF | 31 hr |
| Sep 29, 3:50 AM PDT | High Wind Warning | VEF | 24 hr |
| Oct 2, 2:36 PM PDT | High Wind Watch | VEF | 22 hr |
| Oct 3, 3:59 AM PDT | Wind Advisory | VEF | 39 hr |
| Oct 13, 4:38 AM PDT | High Wind Watch | VEF | 9 hr |
| Oct 13, 4:38 AM PDT | Wind Advisory | VEF | 16 hr |
| Oct 25, 3:47 PM PDT | High Wind Watch | VEF | 23 hr |
| Oct 26, 3:02 PM PDT | High Wind Warning | VEF | 24 hr |
| Oct 26, 3:19 PM PDT | Red Flag Warning | VEF | 23 hr |
| Oct 27, 3:08 PM PDT | Wind Advisory | VEF | 29 hr |
| Nov 11, 1:59 AM PST | High Wind Watch | VEF | 8 hr |
| Nov 11, 10:22 AM PST | High Wind Warning | VEF | 12 hr |
| Nov 11, 10:22 AM PST | Wind Advisory | VEF | 32 hr |
| Nov 18, 2:33 PM PST | High Wind Watch | VEF | 25 hr |
| Nov 19, 3:07 PM PST | High Wind Warning | VEF | 31 hr |
| Nov 19, 3:07 PM PST | Wind Advisory | VEF | 37 hr |
| Nov 28, 1:55 AM PST | Winter Weather Advisory | VEF | 26 hr |
| Dec 4, 2:00 PM PST | Wind Advisory | VEF | 30 hr |
| Dec 5, 2:45 PM PST | High Wind Watch | VEF | 13 hr |
| Dec 5, 3:43 PM PST | Winter Storm Watch | VEF | 23 hr |
| Dec 6, 3:58 AM PST | High Wind Warning | VEF | 18 hr |
| Dec 6, 3:58 AM PST | Wind Advisory | VEF | 24 hr |
| Dec 6, 2:26 PM PST | Winter Storm Warning | VEF | 37 hr |
| Dec 10, 4:31 AM PST | Winter Storm Watch | VEF | 35 hr |
| Dec 11, 3:53 PM PST | Winter Storm Warning | VEF | 42 hr |
| Dec 21, 4:12 AM PST | High Wind Watch | VEF | 21 hr |
| Dec 21, 2:59 PM PST | Wind Advisory | VEF | 33 hr |
| Dec 28, 2:32 PM PST | High Wind Watch | VEF | 25 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 | 1 |
| Flooding | |
| Flash Flood Warning | 8 |
| Winter | |
| Winter Storm Warning | 4 |
| Winter Storm Watch | 4 |
| Winter Weather Advisory | 6 |
| Heat | |
| Excessive Heat Warning | 5 |
| Excessive Heat Watch | 3 |
| Wind and dust | |
| High Wind Warning | 10 |
| High Wind Watch | 13 |
| Wind Advisory | 22 |
| Fire | |
| Red Flag Warning | 3 |
| Fire Weather Watch | 1 |
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordForecastThe radar archive20082010
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.