Alert archive / California / Imperial County
Weather alerts in Imperial County, California, 2014
49 weather alerts in 2014, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Imperial County and its neighbors
Each county as a circle sized by its count in 2014. Tap one for its archive.
- Alerts
- 49
- Warnings
- 24
- Watches
- 5
- Advisories
- 13
- Busiest month
- August19 alerts
- Busiest day
- August 21, 201412 alerts
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
Imperial County, 2014
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 0 | 0 | ||||
| Severe thunderstorm warnings | 10 | 2 | 80% | 2 | 50% | 6 min |
| Flash flood warnings | 4 | 1 | 75% | 0 |
Each office's whole area, 2014
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Phoenix, AZ: tornado warnings | 0 | 1 | 0% | |||
| NWS Phoenix, AZ: severe thunderstorm warnings | 82 | 24 | 71% | 98 | 61% | 17 min |
| NWS Phoenix, AZ: flash flood warnings | 66 | 15 | 77% | 36 | 69% | 39 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 |
|---|---|---|---|
| Mar 9, 1:15 PM PDT | Fire Weather Watch | PSR | 24 hr |
| Mar 14, 2:13 PM PDT | Red Flag Warning | PSR | 28 hr |
| Mar 18, 4:31 AM PDT | Red Flag Warning | PSR | 10 hr |
| Apr 21, 2:06 AM PDT | Fire Weather Watch | PSR | 12 hr |
| Apr 21, 2:11 PM PDT | Red Flag Warning | PSR | 30 hr |
| Apr 23, 1:41 PM PDT | Fire Weather Watch | PSR | 24 hr |
| Apr 24, 1:55 PM PDT | Red Flag Warning | PSR | 30 hr |
| Apr 29, 2:49 AM PDT | Fire Weather Watch | PSR | 13 hr |
| Apr 29, 2:49 AM PDT | Red Flag Warning | PSR | 14 hr |
| Apr 29, 3:42 PM PDT | Red Flag Warning | PSR | 28 hr |
| May 10, 3:24 AM PDT | Fire Weather Watch | PSR | 9 hr |
| May 10, 12:23 PM PDT | Red Flag Warning | PSR | 29 hr |
| Jun 16, 3:00 PM PDT | Red Flag Warning | PSR | 28 hr |
| Jul 5, 6:54 PM PDT | Severe Thunderstorm Warning | PSR | 36 min |
| Jul 14, 3:45 PM PDT | Special Weather Statement | PSR | 45 min |
| Jul 25, 6:57 PM PDT | Special Weather Statement | PSR | 48 min |
| Aug 3, 1:16 PM PDT | Areal Flood Advisory | PSR | 3 hr |
| Aug 3, 2:38 PM PDT | Severe Thunderstorm Warning | PSR | 67 min |
| Aug 3, 2:51 PM PDT | Flash Flood Warning | PSR | 3 hr |
| Aug 3, 5:34 PM PDT | Areal Flood Advisory | PSR | 116 min |
| Aug 11, 5:49 PM PDT | Severe Thunderstorm Warning | PSR | 56 min |
| Aug 13, 1:58 AM PDT | Areal Flood Advisory | PSR | 3 hr |
| Aug 21, 1:32 PM PDT | Special Weather Statement | PSR | 43 min |
| Aug 21, 1:54 PM PDT | Severe Thunderstorm Warning | PSR | 66 min |
| Aug 21, 1:58 PM PDT | Areal Flood Advisory | PSR | 4 hr |
| Aug 21, 2:12 PM PDT | Flash Flood Warning | PSR | 4 hr |
| Aug 21, 2:14 PM PDT | Severe Thunderstorm Warning | PSR | 46 min |
| Aug 21, 2:26 PM PDT | Special Weather Statement | PSR | 49 min |
| Aug 21, 2:39 PM PDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 21, 2:43 PM PDT | Areal Flood Advisory | PSR | 4 hr |
| Aug 21, 3:13 PM PDT | Flash Flood Warning | PSR | 3 hr |
| Aug 21, 3:15 PM PDT | Severe Thunderstorm Warning | PSR | 34 min |
| Aug 21, 3:26 PM PDT | Areal Flood Advisory | PSR | 4 hr |
| Aug 21, 3:41 PM PDT | Areal Flood Advisory | PSR | 2 hr |
| Aug 21, 6:11 PM PDT | Areal Flood Warning | PSR | 3 hr |
| Sep 7, 8:18 AM PDT | Areal Flood Advisory | PSR | 3 hr |
| Sep 8, 5:11 PM PDT | Areal Flood Advisory | PSR | 109 min |
| Sep 8, 7:23 PM PDT | Areal Flood Advisory | PSR | 112 min |
| Sep 8, 9:33 PM PDT | Areal Flood Advisory | PSR | 3 hr |
| Sep 8, 10:07 PM PDT | Areal Flood Warning | PSR | 3 hr |
| Sep 9, 1:08 PM PDT | Flash Flood Warning | PSR | 112 min |
| Sep 9, 2:57 PM PDT | Areal Flood Advisory | PSR | 108 min |
| Sep 26, 2:15 PM PDT | Special Weather Statement | PSR | 60 min |
| Sep 26, 2:25 PM PDT | Severe Thunderstorm Warning | PSR | 65 min |
| Sep 26, 2:41 PM PDT | Severe Thunderstorm Warning | PSR | 64 min |
| Sep 26, 2:57 PM PDT | Severe Thunderstorm Warning | PSR | 63 min |
| Sep 26, 3:09 PM PDT | Mesoscale Discussion | SPC | 66 min |
| Sep 26, 3:20 PM PDT | Severe Thunderstorm Warning | PSR | 55 min |
| Sep 26, 3:48 PM PDT | Areal Flood Advisory | PSR | 117 min |
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 | 10 |
| Mesoscale Discussion | 2 |
| Special Weather Statement | 5 |
| Flooding | |
| Areal Flood Warning | 2 |
| Flash Flood Warning | 4 |
| Areal Flood Advisory | 13 |
| Fire | |
| Red Flag Warning | 8 |
| Fire Weather Watch | 5 |
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordForecastThe radar archive20132015
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.