Alert archive / California / Mono County

Weather alerts in Mono County, California, 2018

101 weather alerts in 2018, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.

Mono County and its neighbors

Each county as a circle sized by its count in 2018. Tap one for its archive.

Alerts: 101
Warnings: 19
Watches: 19
Advisories: 33
Busiest month: July33 alerts
Busiest day: July 23, 20185 alerts

Over time

By month

Warning verification

How often warnings here had a storm report inside them, and how much warning the reports had.

Mono County, 2018

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
Tornado warnings	0			0
Severe thunderstorm warnings	0			0
Flash flood warnings	9	2	78%	5	20%	74 min

Each office's whole area, 2018

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
NWS Reno, NV: severe thunderstorm warnings	18	0	100%	1	0%
NWS Reno, NV: flash flood warnings	19	5	74%	13	46%	57 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
Jan 6, 2:44 PM PST	Winter Storm Watch	REV	23 hr
Jan 7, 2:01 PM PST	Winter Storm Warning	REV	36 hr
Jan 9, 2:25 AM PST	Winter Weather Advisory	REV	8 hr
Jan 16, 2:25 PM PST	High Wind Watch	REV	24 hr
Jan 17, 2:32 PM PST	High Wind Warning	REV	31 hr
Jan 17, 2:32 PM PST	Winter Weather Advisory	REV	41 hr
Jan 22, 3:00 PM PST	Wind Advisory	REV	55 hr
Feb 16, 2:50 PM PST	Wind Advisory	REV	55 hr
Feb 21, 3:25 AM PST	Winter Weather Advisory	REV	43 hr
Feb 24, 1:58 PM PST	Winter Weather Advisory	REV	65 hr
Feb 27, 3:30 AM PST	Winter Storm Watch	REV	23 hr
Feb 27, 2:12 PM PST	Winter Storm Warning	REV	4 days
Feb 28, 9:37 AM PST	Blizzard Warning	REV	49 hr
Mar 11, 2:34 PM PDT	Winter Storm Watch	REV	12 hr
Mar 12, 2:54 AM PDT	Winter Weather Advisory	REV	67 hr
Mar 13, 3:28 AM PDT	Winter Storm Watch	REV	47 hr
Mar 13, 4:45 PM PDT	Winter Storm Warning	REV	3 days
Mar 19, 1:34 PM PDT	Winter Storm Watch	REV	23 hr
Mar 20, 12:49 PM PDT	Winter Storm Warning	REV	58 hr
Mar 20, 2:24 PM PDT	Flood Watch	REV	48 hr
Mar 22, 1:47 PM PDT	Special Weather Statement	REV	3 hr
Apr 3, 9:12 AM PDT	Flood Watch	REV	4 days
Apr 5, 3:06 PM PDT	Wind Advisory	REV	53 hr
Apr 9, 2:36 AM PDT	Wind Advisory	REV	68 hr
Apr 14, 4:23 AM PDT	Wind Advisory	REV	46 hr
Apr 26, 3:51 PM PDT	Special Weather Statement	REV	3 hr
Apr 30, 3:03 AM PDT	Winter Weather Advisory	REV	24 hr
May 16, 12:07 PM PDT	Areal Flood Advisory	REV	7 hr
May 21, 6:46 PM PDT	Areal Flood Warning	REV	3 hr
May 23, 10:49 AM PDT	Flash Flood Watch	REV	5 hr
May 24, 11:37 AM PDT	Winter Weather Advisory	REV	27 hr
May 24, 1:07 PM PDT	Flood Watch	REV	4 hr
May 24, 4:31 PM PDT	Flash Flood Warning	REV	119 min
May 25, 2:52 AM PDT	Flood Watch	REV	12 hr
May 25, 5:36 AM PDT	Areal Flood Advisory	REV	3 hr
May 29, 12:26 PM PDT	Lake Wind Advisory	REV	33 hr
Jun 2, 3:22 PM PDT	Lake Wind Advisory	REV	55 hr
Jun 7, 1:42 PM PDT	Wind Advisory	REV	57 hr
Jun 14, 1:33 PM PDT	Lake Wind Advisory	REV	31 hr
Jun 26, 3:07 PM PDT	Lake Wind Advisory	REV	31 hr
Jul 1, 3:38 PM PDT	Special Weather Statement	REV	112 min
Jul 2, 6:02 PM PDT	Special Weather Statement	REV	43 min
Jul 12, 1:41 PM PDT	Special Weather Statement	REV	79 min
Jul 14, 1:45 PM PDT	Special Weather Statement	REV	2 hr
Jul 14, 3:52 PM PDT	Special Weather Statement	REV	113 min
Jul 16, 5:07 PM PDT	Special Weather Statement	REV	83 min
Jul 18, 4:47 PM PDT	Special Weather Statement	REV	118 min
Jul 19, 1:53 PM PDT	Areal Flood Advisory	REV	3 hr
Jul 19, 2:29 PM PDT	Special Weather Statement	HNX	46 min
Jul 19, 4:29 PM PDT	Flash Flood Warning	REV	94 min
Jul 20, 11:31 AM PDT	Special Weather Statement	REV	3 hr
Jul 20, 2:18 PM PDT	Flash Flood Warning	REV	3 hr
Jul 20, 4:55 PM PDT	Areal Flood Advisory	REV	2 hr
Jul 20, 5:05 PM PDT	Special Weather Statement	HNX	40 min
Jul 21, 12:30 PM PDT	Special Weather Statement	REV	3 hr
Jul 21, 2:41 PM PDT	Flash Flood Warning	REV	5 hr
Jul 21, 5:20 PM PDT	Special Weather Statement	REV	115 min
Jul 21, 6:14 PM PDT	Flash Flood Warning	REV	2 hr
Jul 22, 8:13 AM PDT	Flash Flood Watch	REV	13 hr
Jul 22, 3:53 PM PDT	Flash Flood Warning	REV	3 hr
Jul 23, 3:10 AM PDT	Flash Flood Watch	REV	18 hr
Jul 23, 3:41 PM PDT	Special Weather Statement	HNX	49 min
Jul 23, 3:45 PM PDT	Special Weather Statement	HNX	45 min
Jul 23, 3:58 PM PDT	Flash Flood Warning	REV	4 hr
Jul 23, 4:43 PM PDT	Special Weather Statement	HNX	47 min
Jul 23, 5:34 PM PDT	Special Weather Statement	HNX	41 min
Jul 24, 9:37 AM PDT	Flash Flood Watch	REV	10 hr
Jul 24, 3:11 PM PDT	Special Weather Statement	REV	109 min
Jul 25, 3:35 PM PDT	Special Weather Statement	REV	115 min
Jul 26, 2:22 PM PDT	Special Weather Statement	REV	3 hr
Jul 26, 3:49 PM PDT	Areal Flood Advisory	REV	118 min
Jul 30, 2:26 PM PDT	Special Weather Statement	REV	109 min
Jul 31, 3:57 PM PDT	Areal Flood Advisory	REV	2 hr
Jul 31, 5:10 PM PDT	Areal Flood Advisory	REV	3 hr
Jul 31, 5:33 PM PDT	Flash Flood Warning	REV	3 hr
Aug 1, 12:19 PM PDT	Special Weather Statement	REV	41 min
Aug 1, 1:07 PM PDT	Areal Flood Advisory	REV	6 hr
Aug 1, 1:50 PM PDT	Flash Flood Warning	REV	3 hr
Aug 2, 8:47 AM PDT	Dense Smoke Advisory	REV	26 hr
Aug 2, 1:31 PM PDT	Lake Wind Advisory	REV	56 hr
Aug 2, 2:43 PM PDT	Special Weather Statement	REV	2 hr
Aug 3, 1:18 PM PDT	Dense Smoke Advisory	REV	41 hr
Aug 6, 10:04 AM PDT	Dense Smoke Advisory	REV	19 hr
Aug 11, 5:20 PM PDT	Special Weather Statement	REV	85 min
Aug 12, 2:28 PM PDT	Special Weather Statement	HNX	32 min
Aug 12, 2:59 PM PDT	Special Weather Statement	HNX	46 min
Aug 12, 3:31 PM PDT	Special Weather Statement	REV	119 min
Aug 12, 3:59 PM PDT	Special Weather Statement	HNX	46 min
Aug 13, 1:16 PM PDT	Special Weather Statement	REV	119 min
Aug 13, 3:14 PM PDT	Areal Flood Advisory	REV	2 hr
Aug 25, 2:23 PM PDT	Lake Wind Advisory	REV	31 hr
Oct 11, 1:40 PM PDT	Freeze Watch	REV	24 hr
Oct 12, 1:24 PM PDT	Freeze Warning	REV	68 hr
Nov 19, 11:14 AM PST	Winter Storm Watch	REV	29 hr
Nov 20, 3:44 PM PST	Winter Storm Warning	REV	38 hr
Nov 26, 9:14 AM PST	Winter Storm Watch	REV	28 hr
Nov 27, 12:55 PM PST	Winter Storm Warning	REV	63 hr
Nov 28, 2:50 PM PST	Winter Storm Watch	REV	23 hr
Nov 29, 1:57 PM PST	Winter Weather Advisory	REV	49 hr
Dec 13, 3:23 AM PST	High Wind Watch	REV	11 hr
Dec 13, 2:42 PM PST	Wind Advisory	REV	29 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
Special Weather Statement	30
Flooding
Areal Flood Warning	1
Flash Flood Warning	9
Flash Flood Watch	4
Flood Watch	4
Areal Flood Advisory	9
Winter
Blizzard Warning	1
Winter Storm Warning	6
Winter Storm Watch	8
Winter Weather Advisory	8
Cold
Freeze Warning	1
Freeze Watch	1
Wind and dust
High Wind Warning	1
High Wind Watch	2
Lake Wind Advisory	6
Wind Advisory	7
Fog and smoke
Dense Smoke Advisory	3

The busiest days

Days with the most alerts issued, by UTC date.

Nearby

Alerts in force now Tornadoes on record Forecast The radar archive 2017 2019

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.