Alert archive / California / Nevada County

Weather alerts in Nevada County, California, 2025

113 weather alerts in 2025, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.

Nevada County and its neighbors

Each county as a circle sized by its count in 2025. Tap one for its archive.

Alerts: 113
Warnings: 20
Watches: 17
Advisories: 65
Busiest month: December17 alerts
Busiest day: August 27, 20255 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 Nevada County in 2025 had a tornado report inside them.

Nevada County, 2025

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
Tornado warnings	1	0	100%	0
Severe thunderstorm warnings	7	0	100%	0
Flash flood warnings	4	1	75%	8	25%	73 min

Each office's whole area, 2025

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
NWS Sacramento, CA: tornado warnings	3	0	100%	3	0%
NWS Sacramento, CA: severe thunderstorm warnings	16	1	94%	3	33%	0 min
NWS Sacramento, CA: flash flood warnings	5	2	60%	34	12%	37 min
NWS Reno, NV: severe thunderstorm warnings	37	3	92%	25	12%	12 min
NWS Reno, NV: flash flood warnings	14	6	57%	32	22%	50 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 2, 10:52 AM PST	Winter Weather Advisory	REV	35 hr
Jan 6, 1:01 AM PST	Lake Wind Advisory	REV	51 hr
Jan 19, 11:29 AM PST	Lake Wind Advisory	REV	32 hr
Jan 24, 1:02 PM PST	Winter Weather Advisory	REV	61 hr
Jan 30, 1:18 AM PST	Lake Wind Advisory	REV	5 days
Jan 30, 1:46 PM PST	Winter Storm Watch	REV	62 hr
Jan 30, 1:46 PM PST	Winter Weather Advisory	REV	62 hr
Jan 31, 1:57 PM PST	Flood Watch	REV	46 hr
Feb 2, 4:35 AM PST	Winter Storm Watch	REV	9 hr
Feb 2, 1:58 PM PST	Winter Storm Warning	REV	64 hr
Feb 3, 2:51 PM PST	Winter Storm Watch	REV	47 hr
Feb 3, 11:49 PM PST	Areal Flood Advisory	STO	12 hr
Feb 4, 6:52 AM PST	Areal Flood Advisory	STO	20 hr
Feb 4, 1:04 PM PST	Areal Flood Advisory	STO	14 hr
Feb 5, 1:36 PM PST	Winter Storm Warning	REV	44 hr
Feb 10, 1:05 PM PST	Winter Storm Watch	REV	24 hr
Feb 11, 1:03 PM PST	Winter Storm Warning	REV	3 days
Feb 13, 6:48 AM PST	Areal Flood Advisory	STO	17 hr
Feb 16, 12:19 AM PST	Lake Wind Advisory	REV	22 hr
Feb 16, 6:57 AM PST	Winter Weather Advisory	REV	5 hr
Feb 16, 7:02 AM PST	Special Weather Statement	STO	88 min
Feb 18, 12:15 PM PST	Lake Wind Advisory	REV	30 hr
Feb 23, 8:27 AM PST	Lake Wind Advisory	REV	38 hr
Feb 28, 12:34 PM PST	Winter Weather Advisory	REV	69 hr
Mar 3, 12:25 PM PST	Winter Weather Advisory	REV	3 days
Mar 9, 12:53 PM PDT	Winter Storm Watch	REV	25 hr
Mar 10, 2:00 PM PDT	Winter Storm Warning	REV	72 hr
Mar 12, 7:03 PM PDT	Mesoscale Discussion	SPC	4 hr
Mar 13, 1:57 PM PDT	Winter Weather Advisory	REV	33 hr
Mar 14, 2:05 PM PDT	Winter Storm Watch	REV	13 hr
Mar 15, 3:28 AM PDT	Winter Storm Warning	REV	68 hr
Mar 16, 2:48 AM PDT	Lake Wind Advisory	REV	14 hr
Mar 18, 1:07 PM PDT	Lake Wind Advisory	REV	40 hr
Mar 25, 2:06 PM PDT	Lake Wind Advisory	REV	35 hr
Mar 26, 2:03 PM PDT	Wind Advisory	REV	30 hr
Mar 29, 2:44 AM PDT	Winter Storm Watch	REV	11 hr
Mar 29, 2:07 PM PDT	Winter Storm Warning	REV	3 days
Mar 29, 2:15 PM PDT	Lake Wind Advisory	REV	30 hr
Mar 30, 1:57 PM PDT	Winter Weather Advisory	REV	12 hr
Mar 30, 6:01 PM PDT	Special Weather Statement	STO	44 min
Apr 1, 2:24 PM PDT	Tornado Warning	STO	51 min
Apr 1, 4:01 PM PDT	Special Weather Statement	STO	44 min
Apr 6, 2:02 PM PDT	Lake Wind Advisory	REV	33 hr
Apr 24, 1:27 PM PDT	Winter Weather Advisory	REV	70 hr
May 10, 12:57 PM PDT	Wind Advisory	REV	55 hr
May 16, 1:30 PM PDT	Lake Wind Advisory	REV	31 hr
May 21, 1:31 PM PDT	Lake Wind Advisory	REV	30 hr
Jun 6, 5:56 PM PDT	Areal Flood Advisory	REV	17 min
Jun 6, 6:13 PM PDT	Flash Flood Warning	REV	34 min
Jun 8, 4:24 PM PDT	Special Weather Statement	STO	36 min
Jun 18, 12:38 PM PDT	Wind Advisory	REV	58 hr
Jul 1, 4:23 PM PDT	Areal Flood Advisory	REV	112 min
Jul 2, 2:16 PM PDT	Lake Wind Advisory	REV	30 hr
Jul 20, 1:19 AM PDT	Lake Wind Advisory	REV	22 hr
Jul 20, 1:46 AM PDT	Lake Wind Advisory	REV	45 hr
Jul 25, 4:28 PM PDT	Severe Thunderstorm Warning	REV	32 min
Jul 26, 1:13 PM PDT	Special Weather Statement	STO	32 min
Aug 23, 2:23 PM PDT	Severe Thunderstorm Warning	REV	37 min
Aug 23, 2:30 PM PDT	Flash Flood Warning	REV	2 hr
Aug 23, 2:42 PM PDT	Severe Thunderstorm Warning	REV	48 min
Aug 24, 2:50 AM PDT	Flood Watch	REV	18 hr
Aug 24, 5:21 PM PDT	Special Weather Statement	STO	24 min
Aug 25, 1:01 AM PDT	Flood Watch	REV	20 hr
Aug 25, 3:13 PM PDT	Areal Flood Advisory	REV	3 hr
Aug 26, 1:48 AM PDT	Flood Watch	REV	19 hr
Aug 26, 2:30 PM PDT	Flash Flood Warning	REV	3 hr
Aug 26, 5:08 PM PDT	Areal Flood Advisory	REV	86 min
Aug 27, 12:45 AM PDT	Flood Watch	REV	21 hr
Aug 27, 1:53 PM PDT	Severe Thunderstorm Warning	REV	37 min
Aug 27, 2:14 PM PDT	Severe Thunderstorm Warning	REV	31 min
Aug 27, 2:37 PM PDT	Flash Flood Warning	REV	113 min
Sep 2, 3:18 PM PDT	Special Weather Statement	STO	27 min
Sep 2, 3:33 PM PDT	Severe Thunderstorm Warning	STO	27 min
Sep 2, 4:22 PM PDT	Severe Thunderstorm Warning	STO	23 min
Sep 2, 5:57 PM PDT	Special Weather Statement	STO	33 min
Sep 2, 6:12 PM PDT	Special Weather Statement	STO	48 min
Sep 2, 8:21 PM PDT	Special Weather Statement	STO	39 min
Sep 8, 1:22 AM PDT	Lake Wind Advisory	REV	22 hr
Sep 29, 1:21 AM PDT	Lake Wind Advisory	REV	19 hr
Sep 30, 1:29 AM PDT	Lake Wind Advisory	REV	19 hr
Oct 9, 2:03 AM PDT	Lake Wind Advisory	REV	42 hr
Oct 11, 1:10 PM PDT	Winter Storm Watch	REV	25 hr
Oct 12, 1:55 PM PDT	Winter Weather Advisory	REV	63 hr
Oct 19, 3:10 AM PDT	Lake Wind Advisory	REV	17 hr
Oct 23, 1:46 PM PDT	Lake Wind Advisory	REV	11 hr
Oct 23, 1:46 PM PDT	Wind Advisory	REV	57 hr
Oct 25, 3:10 AM PDT	Wind Advisory	REV	46 hr
Nov 3, 1:31 AM PST	High Wind Watch	REV	23 hr
Nov 3, 1:31 AM PST	Lake Wind Advisory	REV	23 hr
Nov 4, 12:27 AM PST	High Wind Warning	REV	46 hr
Nov 10, 2:06 PM PST	Winter Storm Watch	REV	23 hr
Nov 11, 12:38 PM PST	Winter Weather Advisory	REV	71 hr
Nov 13, 1:34 AM PST	Wind Advisory	REV	20 hr
Nov 13, 10:38 AM PST	Areal Flood Advisory	STO	8 hr
Nov 15, 1:41 PM PST	Winter Weather Advisory	REV	50 hr
Nov 19, 1:51 PM PST	Winter Weather Advisory	REV	42 hr
Dec 3, 12:34 AM PST	Lake Wind Advisory	REV	13 hr
Dec 15, 10:20 AM PST	Lake Wind Advisory	REV	16 hr
Dec 16, 2:15 AM PST	Wind Advisory	REV	38 hr
Dec 17, 4:21 PM PST	Lake Wind Advisory	REV	51 hr
Dec 17, 10:30 PM PST	Wind Advisory	REV	45 hr
Dec 19, 12:59 PM PST	Flood Watch	REV	3 days
Dec 20, 1:31 AM PST	Lake Wind Advisory	REV	47 hr
Dec 20, 1:39 PM PST	Wind Advisory	REV	35 hr
Dec 20, 1:58 PM PST	Winter Weather Advisory	REV	50 hr
Dec 21, 2:39 AM PST	Winter Storm Watch	REV	34 hr
Dec 21, 5:54 AM PST	Areal Flood Advisory	STO	30 hr
Dec 21, 3:44 PM PST	Areal Flood Advisory	STO	20 hr
Dec 22, 11:01 AM PST	Areal Flood Advisory	STO	5 hr
Dec 22, 12:58 PM PST	Winter Storm Warning	REV	5 days
Dec 23, 12:15 PM PST	Lake Wind Advisory	REV	10 hr
Dec 24, 7:35 AM PST	Areal Flood Advisory	STO	4 hr
Dec 25, 4:16 AM PST	Areal Flood Advisory	STO	38 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	10
Flooding
Flash Flood Warning	4
Flood Watch	6
Areal Flood Advisory	14
Winter
Winter Storm Warning	7
Winter Storm Watch	10
Winter Weather Advisory	14
Wind and dust
High Wind Warning	1
High Wind Watch	1
Lake Wind Advisory	28
Wind Advisory	9

The busiest days

Days with the most alerts issued, by UTC date.

Nearby

Alerts in force now Tornadoes on record Forecast The radar archive 2024 2026

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.