Alert archive / Colorado / Rio Blanco County

Weather alerts in Rio Blanco County, Colorado, 2015

123 weather alerts in 2015, 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 2015. Tap one for its archive.

Alerts: 123
Warnings: 39
Watches: 24
Advisories: 40
Busiest month: June24 alerts
Busiest day: June 16, 20158 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 Rio Blanco County in 2015 had a tornado report inside them.

Rio Blanco County, 2015

	Warnings	False alarm ratio	Reports	Inside a warning
Tornado warnings	1	100%	0
Severe thunderstorm warnings	7	100%	0
Flash flood warnings	1	100%	1	0%

Each office's whole area, 2015

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
NWS Grand Junction, CO: tornado warnings	3	1	67%	3	33%	25 min
NWS Grand Junction, CO: severe thunderstorm warnings	45	7	84%	22	27%	20 min
NWS Grand Junction, CO: flash flood warnings	17	3	82%	19	16%	51 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, 3:09 PM MST	Winter Weather Advisory	GJT	32 hr
Jan 7, 1:56 AM MST	Dense Fog Advisory	GJT	8 hr
Jan 9, 11:03 PM MST	Dense Fog Advisory	GJT	12 hr
Jan 10, 7:59 PM MST	Winter Weather Advisory	GJT	22 hr
Jan 11, 3:04 PM MST	Winter Weather Advisory	GJT	51 hr
Jan 14, 4:56 AM MST	Dense Fog Advisory	GJT	4 hr
Jan 31, 12:30 AM MST	Dense Fog Advisory	GJT	9 hr
Feb 1, 7:47 PM MST	Winter Weather Advisory	GJT	37 hr
Feb 2, 9:15 PM MST	Winter Storm Watch	GJT	6 hr
Feb 3, 3:16 AM MST	Winter Storm Warning	GJT	42 hr
Feb 19, 4:57 AM MST	Winter Storm Watch	GJT	24 hr
Feb 20, 4:42 AM MST	Winter Storm Warning	GJT	4 days
Feb 20, 4:42 AM MST	Winter Weather Advisory	GJT	3 days
Feb 26, 2:12 PM MST	Winter Storm Warning	GJT	6 days
Feb 27, 3:10 PM MST	Winter Storm Watch	GJT	14 hr
Feb 28, 4:46 AM MST	Winter Storm Watch	GJT	24 hr
Mar 2, 7:44 AM MST	Freezing Rain Advisory	GJT	3 hr
Apr 3, 3:16 PM MDT	Fire Weather Watch	GJT	24 hr
Apr 4, 1:18 PM MDT	Red Flag Warning	GJT	7 hr
Apr 4, 2:46 PM MDT	Fire Weather Watch	GJT	24 hr
Apr 4, 2:46 PM MDT	Red Flag Warning	GJT	29 hr
Apr 5, 2:40 PM MDT	Fire Weather Watch	GJT	23 hr
Apr 5, 2:40 PM MDT	Red Flag Warning	GJT	30 hr
Apr 6, 2:06 PM MDT	Red Flag Warning	GJT	31 hr
Apr 8, 10:23 AM MDT	Wind Advisory	GJT	9 hr
Apr 12, 3:10 PM MDT	Fire Weather Watch	GJT	21 hr
Apr 13, 4:35 AM MDT	High Wind Watch	GJT	17 hr
Apr 13, 11:51 AM MDT	Red Flag Warning	GJT	33 hr
Apr 13, 2:56 PM MDT	Freeze Watch	GJT	36 hr
Apr 13, 2:56 PM MDT	High Wind Warning	GJT	36 hr
Apr 13, 2:56 PM MDT	Wind Advisory	GJT	36 hr
Apr 15, 3:05 AM MDT	Freeze Warning	GJT	30 hr
Apr 16, 4:11 AM MDT	Winter Weather Advisory	GJT	68 hr
Apr 16, 2:43 PM MDT	Wind Advisory	GJT	6 hr
Apr 25, 2:51 PM MDT	Winter Weather Advisory	GJT	37 hr
May 6, 4:11 PM MDT	Flash Flood Warning	GJT	3 hr
May 7, 3:15 PM MDT	Winter Storm Watch	GJT	36 hr
May 9, 3:14 AM MDT	Winter Weather Advisory	GJT	32 hr
May 13, 3:48 PM MDT	Winter Storm Watch	GJT	23 hr
May 14, 2:58 PM MDT	Winter Weather Advisory	GJT	66 hr
May 18, 12:19 PM MDT	Winter Weather Advisory	GJT	24 hr
May 18, 4:35 PM MDT	Special Weather Statement	GJT	85 min
May 22, 1:47 PM MDT	Special Weather Statement	GJT	43 min
May 22, 1:56 PM MDT	Special Weather Statement	GJT	49 min
May 27, 3:36 PM MDT	Severe Thunderstorm Warning	GJT	39 min
May 27, 4:09 PM MDT	Tornado Warning	GJT	36 min
May 27, 4:16 PM MDT	Severe Thunderstorm Warning	GJT	29 min
May 27, 4:44 PM MDT	Severe Thunderstorm Warning	GJT	31 min
Jun 3, 5:55 PM MDT	Flash Flood Watch	GJT	5 days
Jun 9, 2:46 PM MDT	Flash Flood Watch	GJT	3 days
Jun 13, 4:44 PM MDT	Areal Flood Advisory	GJT	3 hr
Jun 13, 5:28 PM MDT	Areal Flood Advisory	GJT	2 hr
Jun 16, 2:46 PM MDT	Special Weather Statement	GJT	44 min
Jun 16, 3:10 PM MDT	Special Weather Statement	GJT	50 min
Jun 16, 3:36 PM MDT	Special Weather Statement	GJT	39 min
Jun 16, 3:38 PM MDT	Special Weather Statement	GJT	52 min
Jun 16, 5:36 PM MDT	Special Weather Statement	GJT	39 min
Jun 16, 5:49 PM MDT	Special Weather Statement	GJT	41 min
Jun 16, 5:52 PM MDT	Severe Thunderstorm Warning	GJT	23 min
Jun 16, 5:55 PM MDT	Special Weather Statement	GJT	35 min
Jun 16, 6:15 PM MDT	Severe Thunderstorm Warning	GJT	30 min
Jun 16, 6:18 PM MDT	Special Weather Statement	GJT	42 min
Jun 16, 6:45 PM MDT	Severe Thunderstorm Warning	GJT	30 min
Jun 16, 6:47 PM MDT	Special Weather Statement	GJT	28 min
Jun 16, 7:01 PM MDT	Areal Flood Advisory	GJT	3 hr
Jun 16, 7:13 PM MDT	Severe Thunderstorm Warning	GJT	32 min
Jun 16, 7:15 PM MDT	Special Weather Statement	GJT	30 min
Jun 16, 7:44 PM MDT	Special Weather Statement	GJT	46 min
Jun 19, 12:22 PM MDT	Red Flag Warning	GJT	8 hr
Jun 20, 4:26 AM MDT	Fire Weather Watch	GJT	11 hr
Jun 20, 3:02 PM MDT	Red Flag Warning	GJT	29 hr
Jun 22, 5:25 AM MDT	Red Flag Warning	GJT	15 hr
Jul 11, 2:49 PM MDT	Special Weather Statement	GJT	26 min
Jul 15, 3:13 PM MDT	Special Weather Statement	GJT	32 min
Jul 15, 3:54 PM MDT	Special Weather Statement	GJT	36 min
Jul 15, 4:25 PM MDT	Mesoscale Discussion	SPC	65 min
Jul 17, 4:19 AM MDT	Red Flag Warning	GJT	16 hr
Jul 21, 3:33 PM MDT	Areal Flood Advisory	GJT	3 hr
Jul 23, 9:10 AM MDT	Red Flag Warning	GJT	10 hr
Jul 25, 2:52 PM MDT	Fire Weather Watch	GJT	23 hr
Jul 25, 11:42 PM MDT	Red Flag Warning	GJT	20 hr
Jul 26, 1:48 PM MDT	Red Flag Warning	GJT	30 hr
Jul 27, 1:55 PM MDT	Wind Advisory	GJT	6 hr
Aug 5, 4:30 AM MDT	Red Flag Warning	GJT	16 hr
Aug 17, 10:37 AM MDT	Red Flag Warning	GJT	13 hr
Aug 19, 2:52 AM MDT	Fire Weather Watch	GJT	36 hr
Aug 20, 3:00 PM MDT	Fire Weather Watch	GJT	9 hr
Aug 20, 3:00 PM MDT	Red Flag Warning	GJT	29 hr
Aug 31, 3:42 PM MDT	Special Weather Statement	GJT	48 min
Oct 2, 2:01 PM MDT	Wind Advisory	GJT	7 hr
Oct 2, 3:16 PM MDT	Special Weather Statement	GJT	44 min
Oct 5, 9:03 AM MDT	Flash Flood Watch	GJT	15 hr
Oct 12, 4:10 AM MDT	Freeze Warning	GJT	29 hr
Oct 21, 1:44 PM MDT	Winter Weather Advisory	GJT	46 hr
Oct 22, 2:50 PM MDT	Freeze Watch	GJT	22 hr
Oct 23, 12:38 PM MDT	Freeze Warning	GJT	20 hr
Oct 26, 3:02 PM MDT	Freeze Watch	GJT	21 hr
Oct 27, 12:11 PM MDT	Freeze Warning	GJT	21 hr
Nov 2, 4:30 AM MST	Winter Storm Watch	GJT	31 hr
Nov 3, 4:50 AM MST	Winter Storm Warning	GJT	61 hr
Nov 3, 4:51 AM MST	Wind Advisory	GJT	13 hr
Nov 9, 4:06 PM MST	Winter Storm Warning	GJT	44 hr
Nov 9, 4:06 PM MST	Winter Weather Advisory	GJT	44 hr
Nov 10, 4:28 PM MST	Winter Weather Advisory	GJT	13 hr
Nov 14, 1:36 PM MST	Winter Storm Watch	GJT	27 hr
Nov 15, 1:04 AM MST	Winter Storm Warning	GJT	55 hr
Nov 15, 4:00 AM MST	Winter Weather Advisory	GJT	52 hr
Nov 18, 9:00 AM MST	Wind Advisory	GJT	8 hr
Nov 19, 4:26 AM MST	Winter Weather Advisory	GJT	38 hr
Nov 28, 9:34 PM MST	Winter Weather Advisory	GJT	8 hr
Nov 30, 6:50 PM MST	Winter Weather Advisory	GJT	5 hr
Dec 10, 3:26 PM MST	Winter Storm Warning	GJT	51 hr
Dec 10, 3:26 PM MST	Winter Weather Advisory	GJT	57 hr
Dec 12, 11:23 PM MST	Dense Fog Advisory	GJT	9 hr
Dec 13, 3:33 PM MST	Winter Weather Advisory	GJT	53 hr
Dec 14, 1:40 PM MST	Winter Storm Warning	GJT	43 hr
Dec 16, 9:00 AM MST	Winter Weather Advisory	GJT	23 hr
Dec 20, 5:00 AM MST	Winter Storm Watch	GJT	32 hr
Dec 21, 5:14 AM MST	Winter Storm Warning	GJT	63 hr
Dec 21, 5:14 AM MST	Winter Weather Advisory	GJT	8 hr
Dec 23, 2:09 PM MST	Winter Storm Warning	GJT	67 hr
Dec 23, 2:09 PM MST	Winter Weather Advisory	GJT	67 hr
Dec 31, 7:38 AM MST	Dense Fog Advisory	GJT	4 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	7
Tornado Warning	1
Mesoscale Discussion	1
Special Weather Statement	19
Flooding
Flash Flood Warning	1
Flash Flood Watch	3
Areal Flood Advisory	4
Winter
Winter Storm Warning	10
Winter Storm Watch	9
Freezing Rain Advisory	1
Winter Weather Advisory	22
Cold
Freeze Warning	4
Freeze Watch	3
Wind and dust
High Wind Warning	1
High Wind Watch	1
Wind Advisory	7
Fire
Red Flag Warning	15
Fire Weather Watch	8
Fog and smoke
Dense Fog Advisory	6

The busiest days

Days with the most alerts issued, by UTC date.

Nearby

Alerts in force now Tornadoes on record Forecast The radar archive 2014 2016

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.