Alert archive / Colorado / Rio Blanco County
Weather alerts in Rio Blanco County, Colorado, 2009
98 weather alerts in 2009, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Rio Blanco County and its neighbors
Each county as a circle sized by its count in 2009. Tap one for its archive.
- Alerts
- 98
- Warnings
- 30
- Watches
- 24
- Advisories
- 42
- Busiest month
- March18 alerts
- Busiest day
- January 22, 20093 alerts
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
Rio Blanco County, 2009
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 0 | 0 | ||||
| Severe thunderstorm warnings | 3 | 2 | 33% | 1 | 100% | 24 min |
| Flash flood warnings | 1 | 0 | 100% | 0 |
Each office's whole area, 2009
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Grand Junction, CO: tornado warnings | 0 | 2 | 0% | |||
| NWS Grand Junction, CO: severe thunderstorm warnings | 29 | 8 | 72% | 25 | 60% | 18 min |
| NWS Grand Junction, CO: flash flood warnings | 11 | 1 | 91% | 2 | 50% | 0 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 2, 4:41 AM MST | Winter Weather Advisory | GJT | 67 hr |
| Jan 4, 3:29 PM MST | Winter Storm Watch | GJT | 13 hr |
| Jan 5, 3:59 AM MST | Winter Weather Advisory | GJT | 62 hr |
| Jan 8, 4:04 AM MST | Winter Weather Advisory | GJT | 38 hr |
| Jan 12, 12:59 AM MST | Winter Weather Advisory | GJT | 16 hr |
| Jan 22, 4:48 AM MST | Winter Storm Watch | GJT | 8 hr |
| Jan 22, 1:00 PM MST | Winter Storm Warning | GJT | 5 days |
| Jan 22, 3:46 PM MST | Winter Weather Advisory | GJT | 60 hr |
| Jan 25, 3:57 AM MST | Winter Storm Watch | GJT | 11 hr |
| Jan 25, 3:57 AM MST | Winter Weather Advisory | GJT | 58 hr |
| Jan 27, 3:17 PM MST | Winter Storm Warning | GJT | 37 hr |
| Feb 8, 3:06 PM MST | Winter Weather Advisory | GJT | 48 hr |
| Feb 11, 9:55 AM MST | Winter Weather Advisory | GJT | 19 hr |
| Feb 12, 4:30 AM MST | Winter Weather Advisory | GJT | 32 hr |
| Feb 13, 12:29 PM MST | Winter Storm Watch | GJT | 3 hr |
| Feb 13, 3:15 PM MST | Winter Storm Warning | GJT | 37 hr |
| Feb 15, 3:42 PM MST | Winter Storm Watch | GJT | 21 hr |
| Feb 16, 4:34 AM MST | Winter Storm Warning | GJT | 64 hr |
| Feb 16, 4:34 AM MST | Winter Weather Advisory | GJT | 59 hr |
| Feb 23, 4:15 AM MST | Winter Weather Advisory | GJT | 26 hr |
| Feb 24, 7:51 AM MST | Dense Fog Advisory | GJT | 3 hr |
| Mar 4, 4:38 AM MST | Wind Advisory | GJT | 16 hr |
| Mar 5, 3:11 PM MST | Winter Storm Watch | GJT | 13 hr |
| Mar 5, 3:11 PM MST | Winter Storm Warning | GJT | 57 hr |
| Mar 8, 3:38 PM MDT | Winter Storm Watch | GJT | 12 hr |
| Mar 9, 4:00 AM MDT | Winter Storm Warning | GJT | 32 hr |
| Mar 21, 4:46 AM MDT | Winter Storm Watch | GJT | 24 hr |
| Mar 21, 3:35 PM MDT | Winter Storm Warning | GJT | 68 hr |
| Mar 21, 3:35 PM MDT | Winter Weather Advisory | GJT | 68 hr |
| Mar 22, 3:43 PM MDT | Wind Advisory | GJT | 5 hr |
| Mar 24, 3:32 PM MDT | Winter Storm Watch | GJT | 23 hr |
| Mar 24, 3:32 PM MDT | Winter Weather Advisory | GJT | 23 hr |
| Mar 25, 4:17 AM MDT | Winter Storm Warning | GJT | 54 hr |
| Mar 25, 2:47 PM MDT | Winter Weather Advisory | GJT | 43 hr |
| Mar 28, 3:13 PM MDT | Winter Weather Advisory | GJT | 55 hr |
| Mar 29, 4:30 AM MDT | Wind Advisory | GJT | 18 hr |
| Mar 29, 11:17 AM MDT | High Wind Warning | GJT | 11 hr |
| Mar 31, 4:33 AM MDT | Winter Weather Advisory | GJT | 40 hr |
| Mar 31, 9:43 AM MDT | Winter Storm Warning | GJT | 35 hr |
| Apr 2, 4:40 AM MDT | Winter Storm Watch | GJT | 11 hr |
| Apr 2, 3:45 PM MDT | Winter Storm Warning | GJT | 56 hr |
| Apr 7, 3:19 PM MDT | Winter Storm Watch | GJT | 8 hr |
| Apr 7, 11:27 PM MDT | Winter Weather Advisory | GJT | 49 hr |
| Apr 8, 12:39 AM MDT | Wind Advisory | GJT | 20 hr |
| Apr 10, 3:36 PM MDT | Winter Weather Advisory | GJT | 50 hr |
| Apr 14, 12:31 PM MDT | Winter Storm Watch | GJT | 16 hr |
| Apr 14, 12:31 PM MDT | Winter Storm Warning | GJT | 4 days |
| Apr 15, 8:37 AM MDT | Wind Advisory | GJT | 11 hr |
| Apr 24, 3:23 PM MDT | Winter Weather Advisory | GJT | 63 hr |
| Apr 25, 3:10 PM MDT | Winter Storm Warning | GJT | 39 hr |
| Apr 29, 2:46 PM MDT | Fire Weather Watch | GJT | 7 hr |
| Apr 29, 9:59 PM MDT | Red Flag Warning | GJT | 22 hr |
| May 11, 6:46 AM MDT | Fire Weather Watch | GJT | 9 hr |
| May 11, 3:17 PM MDT | Red Flag Warning | GJT | 30 hr |
| May 12, 3:47 AM MDT | Wind Advisory | GJT | 16 hr |
| May 24, 2:01 AM MDT | Flash Flood Watch | GJT | 20 hr |
| May 25, 3:58 AM MDT | Flash Flood Watch | GJT | 16 hr |
| Jun 2, 2:40 PM MDT | Areal Flood Advisory | GJT | 4 hr |
| Jun 21, 1:28 PM MDT | Mesoscale Discussion | SPC | 92 min |
| Jun 21, 2:54 PM MDT | Severe Thunderstorm Warning | GJT | 41 min |
| Jun 21, 4:43 PM MDT | Severe Thunderstorm Warning | GJT | 47 min |
| Jun 26, 8:29 AM MDT | Flash Flood Watch | GJT | 12 hr |
| Jun 26, 10:51 AM MDT | Areal Flood Advisory | GJT | 3 hr |
| Jul 2, 1:28 PM MDT | Areal Flood Advisory | GJT | 3 hr |
| Jul 2, 2:59 PM MDT | Areal Flood Advisory | GJT | 3 hr |
| Jul 3, 1:08 PM MDT | Areal Flood Advisory | GJT | 3 hr |
| Jul 6, 1:17 PM MDT | Areal Flood Advisory | GJT | 3 hr |
| Jul 8, 6:20 AM MDT | Red Flag Warning | GJT | 38 hr |
| Aug 3, 3:10 PM MDT | Fire Weather Watch | GJT | 70 hr |
| Aug 6, 12:55 PM MDT | Red Flag Warning | GJT | 33 hr |
| Aug 14, 3:12 PM MDT | Flash Flood Warning | GJT | 3 hr |
| Aug 15, 2:01 PM MDT | Severe Thunderstorm Warning | GJT | 44 min |
| Aug 30, 2:43 PM MDT | Red Flag Warning | GJT | 29 hr |
| Sep 15, 12:46 PM MDT | Mesoscale Discussion | SPC | 89 min |
| Sep 19, 3:17 PM MDT | Freeze Watch | GJT | 36 hr |
| Sep 20, 3:17 PM MDT | Freeze Warning | GJT | 14 hr |
| Sep 21, 2:51 AM MDT | Freeze Warning | GJT | 30 hr |
| Sep 27, 3:05 PM MDT | Fire Weather Watch | GJT | 24 hr |
| Sep 28, 3:28 PM MDT | Red Flag Warning | GJT | 36 hr |
| Sep 30, 3:54 AM MDT | Winter Weather Advisory | GJT | 32 hr |
| Sep 30, 7:18 AM MDT | High Wind Warning | GJT | 12 hr |
| Oct 26, 3:52 PM MDT | Winter Storm Watch | GJT | 13 hr |
| Oct 26, 3:52 PM MDT | Winter Storm Warning | GJT | 3 days |
| Nov 11, 3:42 PM MST | Winter Storm Watch | GJT | 13 hr |
| Nov 12, 4:48 AM MST | Winter Storm Warning | GJT | 3 days |
| Nov 12, 4:48 AM MST | Winter Weather Advisory | GJT | 3 days |
| Nov 22, 2:50 PM MST | Winter Weather Advisory | GJT | 29 hr |
| Dec 4, 3:26 PM MST | Winter Weather Advisory | GJT | 61 hr |
| Dec 5, 4:26 AM MST | Winter Storm Watch | GJT | 45 hr |
| Dec 6, 2:20 PM MST | Winter Storm Warning | GJT | 49 hr |
| Dec 8, 3:25 PM MST | Winter Weather Advisory | GJT | 35 hr |
| Dec 11, 3:06 PM MST | Winter Storm Watch | GJT | 13 hr |
| Dec 12, 4:05 AM MST | Winter Storm Warning | GJT | 53 hr |
| Dec 12, 4:05 AM MST | Winter Weather Advisory | GJT | 53 hr |
| Dec 18, 8:21 PM MST | Dense Fog Advisory | GJT | 15 hr |
| Dec 21, 3:08 PM MST | Winter Weather Advisory | GJT | 63 hr |
| Dec 24, 3:21 PM MST | Winter Weather Advisory | GJT | 39 hr |
| Dec 29, 3:13 PM MST | Winter Weather Advisory | GJT | 37 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 | 3 |
| Mesoscale Discussion | 2 |
| Flooding | |
| Flash Flood Warning | 1 |
| Flash Flood Watch | 3 |
| Areal Flood Advisory | 6 |
| Winter | |
| Winter Storm Warning | 16 |
| Winter Storm Watch | 16 |
| Winter Weather Advisory | 28 |
| Cold | |
| Freeze Warning | 2 |
| Freeze Watch | 1 |
| Wind and dust | |
| High Wind Warning | 2 |
| Wind Advisory | 6 |
| Fire | |
| Red Flag Warning | 6 |
| Fire Weather Watch | 4 |
| Fog and smoke | |
| Dense Fog Advisory | 2 |
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.