Alert archive / Colorado / La Plata County
Weather alerts in La Plata County, Colorado, 2008
93 weather alerts in 2008, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
La Plata County and its neighbors
Each county as a circle sized by its count in 2008. Tap one for its archive.
- Alerts
- 93
- Warnings
- 40
- Watches
- 30
- Advisories
- 19
- Busiest month
- January15 alerts
- Busiest day
- February 2, 20083 alerts
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
La Plata County, 2008
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 0 | 0 | ||||
| Severe thunderstorm warnings | 0 | 1 | 0% | |||
| Flash flood warnings | 0 | 0 |
Each office's whole area, 2008
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Denver/Boulder, CO: tornado warnings | 58 | 16 | 72% | 44 | 64% | 13 min |
| NWS Denver/Boulder, CO: severe thunderstorm warnings | 147 | 52 | 65% | 140 | 54% | 20 min |
| NWS Denver/Boulder, CO: flash flood warnings | 14 | 3 | 79% | 7 | 86% | 40 min |
| NWS Pueblo, CO: tornado warnings | 23 | 3 | 87% | 13 | 31% | 1 min |
| NWS Pueblo, CO: severe thunderstorm warnings | 191 | 44 | 77% | 77 | 82% | 21 min |
| NWS Pueblo, CO: flash flood warnings | 11 | 0 | 100% | 0 | ||
| NWS Goodland, KS: tornado warnings | 89 | 27 | 70% | 50 | 82% | 27 min |
| NWS Goodland, KS: severe thunderstorm warnings | 287 | 106 | 63% | 281 | 65% | 23 min |
| NWS Goodland, KS: flash flood warnings | 34 | 5 | 85% | 11 | 73% | 101 min |
| NWS Grand Junction, CO: tornado warnings | 0 | 1 | 0% | |||
| NWS Grand Junction, CO: severe thunderstorm warnings | 8 | 0 | 100% | 4 | 0% | |
| NWS Grand Junction, CO: flash flood warnings | 16 | 1 | 94% | 2 | 50% | 58 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, Mountain Time. Each opens its own page with the text, the map, the radar and the sounding.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Jan 3, 4:20 AM MST | Winter Storm Watch | GJT | 35 hr |
| Jan 4, 4:04 AM MST | Winter Storm Warning | GJT | 4 days |
| Jan 4, 9:10 PM MST | Winter Storm Watch | GJT | 18 hr |
| Jan 5, 1:44 PM MST | Heavy Snow Warning | GJT | 55 hr |
| Jan 8, 3:10 PM MST | Snow and Blowing Snow Advisory | GJT | 33 hr |
| Jan 23, 3:59 AM MST | Winter Storm Watch | GJT | 25 hr |
| Jan 23, 3:37 PM MST | Winter Storm Warning | GJT | 44 hr |
| Jan 24, 4:49 AM MST | Snow Advisory | GJT | 24 hr |
| Jan 24, 10:45 AM MST | Heavy Snow Warning | GJT | 18 hr |
| Jan 25, 3:46 PM MST | Winter Storm Watch | GJT | 43 hr |
| Jan 26, 3:28 PM MST | Heavy Snow Warning | GJT | 13 hr |
| Jan 26, 3:28 PM MST | Winter Storm Warning | GJT | 57 hr |
| Jan 27, 4:09 AM MST | Blizzard Warning | GJT | 44 hr |
| Jan 28, 5:15 PM MST | Mesoscale Discussion | SPC | 6 hr |
| Jan 29, 4:18 AM MST | Snow and Blowing Snow Advisory | GJT | 44 hr |
| Feb 1, 3:15 PM MST | Winter Storm Watch | GJT | 37 hr |
| Feb 2, 9:08 AM MST | Snow Advisory | GJT | 9 hr |
| Feb 2, 3:41 PM MST | Heavy Snow Warning | GJT | 48 hr |
| Feb 2, 3:41 PM MST | Winter Storm Warning | GJT | 56 hr |
| Feb 12, 4:49 AM MST | Winter Storm Watch | GJT | 24 hr |
| Feb 13, 4:29 AM MST | Winter Storm Warning | GJT | 50 hr |
| Feb 13, 12:34 PM MST | Snow Advisory | GJT | 41 hr |
| Feb 20, 4:00 AM MST | Snow Advisory | GJT | 35 hr |
| Feb 21, 3:33 PM MST | Snow Advisory | GJT | 44 hr |
| Feb 23, 3:00 PM MST | Winter Storm Watch | GJT | 8 hr |
| Feb 23, 11:00 PM MST | Winter Storm Warning | GJT | 53 hr |
| Feb 24, 3:53 AM MST | Snow Advisory | GJT | 48 hr |
| Mar 15, 3:29 PM MDT | Winter Storm Watch | GJT | 13 hr |
| Mar 16, 4:16 AM MDT | Snow and Blowing Snow Advisory | GJT | 32 hr |
| Mar 30, 5:12 AM MDT | Snow and Blowing Snow Advisory | GJT | 37 hr |
| Apr 8, 3:38 AM MDT | Winter Storm Watch | GJT | 24 hr |
| Apr 8, 3:13 PM MDT | Winter Storm Warning | GJT | 48 hr |
| Apr 17, 2:29 PM MDT | Fire Weather Watch | GJT | 24 hr |
| Apr 18, 2:04 PM MDT | Fire Weather Watch | GJT | 25 hr |
| Apr 18, 2:04 PM MDT | Red Flag Warning | GJT | 31 hr |
| Apr 19, 2:44 PM MDT | Red Flag Warning | GJT | 30 hr |
| Apr 19, 3:03 PM MDT | Wind Advisory | GJT | 30 hr |
| Apr 20, 2:50 PM MDT | Red Flag Warning | GJT | 28 hr |
| Apr 21, 3:00 PM MDT | Fire Weather Watch | GJT | 24 hr |
| Apr 22, 2:53 PM MDT | Fire Weather Watch | GJT | 23 hr |
| Apr 22, 2:53 PM MDT | Red Flag Warning | GJT | 28 hr |
| Apr 23, 1:39 PM MDT | Red Flag Warning | GJT | 29 hr |
| Apr 28, 2:28 PM MDT | Fire Weather Watch | GJT | 24 hr |
| Apr 28, 2:28 PM MDT | Red Flag Warning | GJT | 31 hr |
| Apr 29, 2:00 PM MDT | Red Flag Warning | GJT | 33 hr |
| May 8, 11:56 AM MDT | Mesoscale Discussion | SPC | 64 min |
| May 9, 12:41 PM MDT | Red Flag Warning | GJT | 7 hr |
| May 10, 10:01 AM MDT | Red Flag Warning | GJT | 10 hr |
| May 10, 3:13 PM MDT | Fire Weather Watch | GJT | 24 hr |
| May 11, 3:03 PM MDT | Red Flag Warning | GJT | 28 hr |
| May 11, 3:12 PM MDT | Winter Storm Watch | GJT | 23 hr |
| May 12, 2:37 PM MDT | Winter Storm Warning | GJT | 27 hr |
| May 19, 2:51 PM MDT | Fire Weather Watch | GJT | 24 hr |
| May 20, 3:07 PM MDT | Red Flag Warning | GJT | 28 hr |
| May 21, 4:30 AM MDT | Winter Storm Warning | GJT | 3 days |
| May 22, 8:52 AM MDT | Winter Storm Watch | GJT | 53 min |
| Jun 4, 3:00 PM MDT | Snow Advisory | GJT | 27 hr |
| Jun 9, 2:40 PM MDT | Red Flag Warning | GJT | 29 hr |
| Jun 10, 3:03 PM MDT | Red Flag Warning | GJT | 29 hr |
| Jun 12, 2:50 AM MDT | Red Flag Warning | GJT | 16 hr |
| Jun 30, 6:30 AM MDT | Red Flag Warning | GJT | 16 hr |
| Jul 1, 6:42 AM MDT | Fire Weather Watch | GJT | 78 min |
| Jul 23, 5:12 PM MDT | Areal Flood Advisory | GJT | 88 min |
| Aug 6, 4:34 AM MDT | Flash Flood Watch | GJT | 16 hr |
| Aug 7, 4:25 AM MDT | Flash Flood Watch | GJT | 16 hr |
| Aug 8, 4:30 AM MDT | Flash Flood Watch | GJT | 17 hr |
| Aug 9, 4:27 AM MDT | Flash Flood Watch | GJT | 17 hr |
| Oct 3, 3:32 PM MDT | Winter Storm Watch | GJT | 15 hr |
| Oct 4, 5:13 AM MDT | Winter Storm Warning | GJT | 47 hr |
| Oct 6, 2:38 PM MDT | Freeze Warning | GJT | 18 hr |
| Oct 10, 3:00 PM MDT | Winter Weather Advisory | GJT | 39 hr |
| Oct 11, 4:14 AM MDT | Wind Advisory | GJT | 17 hr |
| Oct 12, 3:00 AM MDT | Freeze Watch | GJT | 13 hr |
| Oct 12, 3:30 PM MDT | Freeze Warning | GJT | 18 hr |
| Nov 3, 4:53 AM MST | Winter Storm Watch | GJT | 10 hr |
| Nov 3, 3:06 PM MST | Winter Storm Warning | GJT | 60 hr |
| Nov 10, 4:54 AM MST | Winter Weather Advisory | GJT | 7 hr |
| Nov 26, 3:44 AM MST | Winter Weather Advisory | GJT | 62 hr |
| Nov 26, 10:51 AM MST | Winter Storm Warning | GJT | 45 hr |
| Dec 7, 3:59 PM MST | Winter Weather Advisory | GJT | 44 hr |
| Dec 8, 7:22 PM MST | Winter Storm Warning | GJT | 16 hr |
| Dec 11, 3:35 PM MST | Winter Storm Watch | GJT | 19 hr |
| Dec 12, 10:53 AM MST | Winter Storm Warning | GJT | 52 hr |
| Dec 12, 3:23 PM MST | Winter Weather Advisory | GJT | 44 hr |
| Dec 13, 3:27 PM MST | Winter Storm Watch | GJT | 23 hr |
| Dec 14, 2:37 PM MST | Winter Storm Warning | GJT | 5 days |
| Dec 20, 3:14 PM MST | Winter Storm Watch | GJT | 35 hr |
| Dec 21, 4:41 AM MST | Winter Storm Warning | GJT | 67 hr |
| Dec 22, 10:15 AM MST | Mesoscale Discussion | SPC | 4 hr |
| Dec 22, 5:40 PM MST | Mesoscale Discussion | SPC | 4 hr |
| Dec 23, 4:15 AM MST | Winter Storm Watch | GJT | 35 hr |
| Dec 23, 3:37 PM MST | Winter Storm Warning | GJT | 3 days |
| Dec 24, 11:58 AM MST | Blizzard Warning | GJT | 48 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 | |
| Mesoscale Discussion | 4 |
| Flooding | |
| Flash Flood Watch | 4 |
| Areal Flood Advisory | 1 |
| Winter | |
| Blizzard Warning | 2 |
| Heavy Snow Warning | 4 |
| Winter Storm Warning | 17 |
| Winter Storm Watch | 17 |
| Snow Advisory | 7 |
| Snow and Blowing Snow Advisory | 4 |
| Winter Weather Advisory | 5 |
| Cold | |
| Freeze Warning | 2 |
| Freeze Watch | 1 |
| Wind and dust | |
| Wind Advisory | 2 |
| Fire | |
| Red Flag Warning | 15 |
| Fire Weather Watch | 8 |
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordForecastThe radar archive20072009
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.