Alert archive / Idaho / Franklin County
Weather alerts in Franklin County, Idaho, 2020
74 weather alerts in 2020, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Franklin County and its neighbors
Each county as a circle sized by its count in 2020. Tap one for its archive.
- Alerts
- 74
- Warnings
- 21
- Watches
- 11
- Advisories
- 23
- Busiest month
- July12 alerts
- Busiest day
- July 28, 20205 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 1 tornado warnings covering Franklin County in 2020 had a tornado report inside them.
Franklin County, 2020
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 1 | 0 | 100% | 0 | ||
| Severe thunderstorm warnings | 4 | 1 | 75% | 0 | ||
| Flash flood warnings | 0 | 0 |
Each office's whole area, 2020
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Pocatello, ID: tornado warnings | 5 | 0 | 100% | 0 | ||
| NWS Pocatello, ID: severe thunderstorm warnings | 52 | 19 | 63% | 158 | 41% | 21 min |
| NWS Pocatello, ID: flash flood warnings | 1 | 0 | 100% | 0 |
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, Mountain Time. Each opens its own page with the text, the map, the radar and the sounding.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Jan 9, 2:57 AM MST | Winter Storm Watch | PIH | 31 hr |
| Jan 10, 9:45 AM MST | Winter Storm Warning | PIH | 5 days |
| Jan 10, 9:45 AM MST | Winter Weather Advisory | PIH | 34 hr |
| Jan 12, 11:05 AM MST | Winter Weather Advisory | PIH | 30 hr |
| Jan 13, 1:07 PM MST | Winter Weather Advisory | PIH | 33 hr |
| Jan 14, 7:54 AM MST | Special Weather Statement | PIH | 96 min |
| Jan 15, 2:00 PM MST | Winter Weather Advisory | PIH | 52 hr |
| Jan 16, 2:28 AM MST | Winter Storm Warning | PIH | 39 hr |
| Jan 17, 4:51 AM MST | Special Weather Statement | PIH | 3 hr |
| Feb 1, 3:46 AM MST | Winter Storm Watch | PIH | 11 hr |
| Feb 1, 2:45 PM MST | Winter Weather Advisory | PIH | 51 hr |
| Feb 1, 8:27 PM MST | Winter Storm Warning | PIH | 45 hr |
| Feb 4, 2:35 PM MST | Winter Weather Advisory | PIH | 72 hr |
| Feb 14, 1:45 PM MST | Winter Storm Warning | PIH | 56 hr |
| Feb 23, 4:10 AM MST | Wind Advisory | PIH | 22 hr |
| Mar 23, 1:34 PM MDT | Winter Weather Advisory | PIH | 38 hr |
| Apr 14, 2:15 PM MDT | Winter Weather Advisory | PIH | 43 hr |
| Apr 22, 1:20 PM MDT | Wind Advisory | PIH | 33 hr |
| Apr 30, 2:55 PM MDT | Tornado Warning | PIH | 50 min |
| Apr 30, 2:58 PM MDT | Mesoscale Discussion | SPC | 92 min |
| Apr 30, 3:44 PM MDT | Severe Thunderstorm Warning | PIH | 46 min |
| Apr 30, 4:29 PM MDT | Special Weather Statement | PIH | 91 min |
| May 5, 2:03 PM MDT | Wind Advisory | PIH | 31 hr |
| May 11, 5:11 PM MDT | Special Weather Statement | PIH | 49 min |
| May 29, 2:12 PM MDT | Mesoscale Discussion | SPC | 2 hr |
| May 30, 4:59 PM MDT | Special Weather Statement | PIH | 46 min |
| Jun 3, 4:31 PM MDT | Special Weather Statement | PIH | 44 min |
| Jun 5, 8:22 PM MDT | Special Weather Statement | PIH | 38 min |
| Jun 6, 4:03 PM MDT | Severe Thunderstorm Warning | PIH | 42 min |
| Jun 7, 10:28 AM MDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 11, 1:34 PM MDT | Wind Advisory | PIH | 52 hr |
| Jun 27, 10:10 PM MDT | Severe Thunderstorm Warning | PIH | 31 min |
| Jul 20, 2:10 PM MDT | Fire Weather Watch | PIH | 23 hr |
| Jul 21, 12:48 PM MDT | Red Flag Warning | PIH | 32 hr |
| Jul 26, 1:07 PM MDT | Fire Weather Watch | PIH | 25 hr |
| Jul 26, 1:07 PM MDT | Fire Weather Watch | PIH | 25 hr |
| Jul 27, 1:52 PM MDT | Red Flag Warning | PIH | 7 hr |
| Jul 27, 1:52 PM MDT | Red Flag Warning | PIH | 28 hr |
| Jul 28, 1:24 PM MDT | Special Weather Statement | PIH | 66 min |
| Jul 28, 2:28 PM MDT | Special Weather Statement | PIH | 62 min |
| Jul 28, 2:32 PM MDT | Special Weather Statement | PIH | 58 min |
| Jul 28, 3:31 PM MDT | Special Weather Statement | PIH | 59 min |
| Jul 28, 4:32 PM MDT | Special Weather Statement | PIH | 43 min |
| Jul 29, 2:30 AM MDT | Heat Advisory | PIH | 5 days |
| Aug 2, 12:54 PM MDT | Red Flag Warning | PIH | 32 hr |
| Aug 5, 1:14 PM MDT | Red Flag Warning | PIH | 32 hr |
| Aug 5, 7:07 PM MDT | Special Weather Statement | PIH | 38 min |
| Aug 11, 12:35 PM MDT | Red Flag Warning | PIH | 32 hr |
| Aug 14, 1:33 PM MDT | Heat Advisory | PIH | 5 days |
| Aug 25, 3:28 AM MDT | Red Flag Warning | PIH | 18 hr |
| Aug 25, 3:55 PM MDT | Severe Thunderstorm Warning | PIH | 50 min |
| Aug 25, 9:20 PM MDT | Special Weather Statement | PIH | 40 min |
| Aug 28, 2:22 AM MDT | Fire Weather Watch | PIH | 10 hr |
| Aug 28, 12:34 PM MDT | Red Flag Warning | PIH | 56 hr |
| Sep 3, 3:19 PM MDT | Heat Advisory | PIH | 54 hr |
| Sep 4, 1:11 AM MDT | Fire Weather Watch | PIH | 14 hr |
| Sep 4, 3:03 PM MDT | Red Flag Warning | PIH | 54 hr |
| Sep 5, 1:45 PM MDT | High Wind Watch | PIH | 24 hr |
| Sep 6, 2:23 AM MDT | Red Flag Warning | PIH | 43 hr |
| Sep 6, 1:42 PM MDT | Wind Advisory | PIH | 40 hr |
| Sep 15, 2:06 PM MDT | Fire Weather Watch | PIH | 24 hr |
| Sep 16, 1:50 PM MDT | Red Flag Warning | PIH | 55 hr |
| Sep 19, 4:19 PM MDT | Special Weather Statement | PIH | 56 min |
| Sep 19, 5:19 PM MDT | Special Weather Statement | PIH | 41 min |
| Oct 12, 7:49 PM MDT | Wind Advisory | PIH | 39 hr |
| Oct 14, 11:06 AM MDT | Wind Advisory | PIH | 8 hr |
| Nov 6, 4:05 AM MST | Winter Storm Watch | PIH | 23 hr |
| Nov 7, 2:54 AM MST | Winter Weather Advisory | PIH | 38 hr |
| Nov 11, 2:19 PM MST | Winter Storm Watch | PIH | 25 hr |
| Nov 12, 3:26 PM MST | Winter Storm Warning | PIH | 35 hr |
| Nov 12, 3:26 PM MST | Winter Weather Advisory | PIH | 46 hr |
| Nov 14, 2:36 PM MST | Winter Weather Advisory | PIH | 32 hr |
| Dec 1, 1:34 PM MST | Air Stagnation Advisory | PIH | 8 days |
| Dec 25, 1:31 PM MST | Winter Weather Advisory | PIH | 39 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 | 4 |
| Tornado Warning | 1 |
| Mesoscale Discussion | 3 |
| Special Weather Statement | 16 |
| Winter | |
| Winter Storm Warning | 5 |
| Winter Storm Watch | 4 |
| Winter Weather Advisory | 12 |
| Heat | |
| Heat Advisory | 3 |
| Wind and dust | |
| High Wind Watch | 1 |
| Wind Advisory | 7 |
| Fire | |
| Red Flag Warning | 11 |
| Fire Weather Watch | 6 |
| Fog and smoke | |
| Air Stagnation Advisory | 1 |
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.