Alert archive / California / Merced County

Weather alerts in Merced County, California, 2026

108 weather alerts in 2026, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.

Merced County and its neighbors

Each county as a circle sized by its count in 2026. Tap one for its archive.

Alerts: 108
Warnings: 12
Watches: 3
Advisories: 65
Busiest month: January35 alerts
Busiest day: April 10, 202618 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 2 tornado reports fell inside a warning.

Merced County, 2026

	Warnings	With a report	False alarm ratio	Reports	Inside a warning
Tornado warnings	0			2	0%
Severe thunderstorm warnings	5	1	80%	2	0%
Flash flood warnings	0			0

Each office's whole area, 2026

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
NWS Hanford, CA: tornado warnings	4	0	100%	8	0%
NWS Hanford, CA: severe thunderstorm warnings	16	2	88%	7	29%	21 min
NWS Hanford, CA: flash flood warnings	0			8	0%

An office's figures cover every county it serves, including across state lines.

The year is still running; reports filed late and damage surveys can still change these figures.

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 1, 12:32 PM PST	Special Weather Statement	HNX	28 min
Jan 1, 1:11 PM PST	Areal Flood Advisory	HNX	64 min
Jan 2, 9:44 AM PST	Flood Watch	HNX	64 hr
Jan 2, 9:44 AM PST	Lake Wind Advisory	HNX	18 hr
Jan 3, 2:18 PM PST	Special Weather Statement	HNX	27 min
Jan 3, 2:45 PM PST	Special Weather Statement	HNX	30 min
Jan 3, 3:23 PM PST	Special Weather Statement	HNX	37 min
Jan 3, 5:25 PM PST	Areal Flood Advisory	HNX	95 min
Jan 3, 6:56 PM PST	Areal Flood Advisory	HNX	4 hr
Jan 4, 11:15 AM PST	Areal Flood Advisory	HNX	6 hr
Jan 4, 1:07 PM PST	Special Weather Statement	HNX	23 min
Jan 4, 1:21 PM PST	Special Weather Statement	HNX	39 min
Jan 7, 12:39 AM PST	Dense Fog Advisory	HNX	10 hr
Jan 9, 4:24 AM PST	Freeze Warning	HNX	30 hr
Jan 11, 4:35 AM PST	Freeze Warning	HNX	4 hr
Jan 11, 2:01 PM PST	Dense Fog Advisory	HNX	21 hr
Jan 12, 5:45 AM PST	Freeze Warning	HNX	4 hr
Jan 12, 8:02 PM PST	Dense Fog Advisory	HNX	14 hr
Jan 13, 12:51 PM PST	Dense Fog Advisory	HNX	24 hr
Jan 14, 12:51 PM PST	Dense Fog Advisory	HNX	25 hr
Jan 15, 2:10 PM PST	Dense Fog Advisory	HNX	23 hr
Jan 16, 1:02 PM PST	Dense Fog Advisory	HNX	118 min
Jan 16, 2:04 PM PST	Dense Fog Advisory	HNX	71 hr
Jan 19, 2:29 PM PST	Dense Fog Advisory	HNX	22 hr
Jan 20, 2:34 PM PST	Dense Fog Advisory	HNX	21 hr
Jan 22, 2:01 AM PST	Dense Fog Advisory	HNX	10 hr
Jan 22, 2:14 PM PST	Dense Fog Advisory	HNX	45 hr
Jan 24, 1:42 PM PST	Dense Fog Advisory	HNX	21 hr
Jan 26, 4:10 AM PST	Dense Fog Advisory	HNX	9 hr
Jan 26, 1:00 PM PST	Dense Fog Advisory	HNX	23 hr
Jan 27, 3:23 PM PST	Dense Fog Advisory	HNX	19 hr
Jan 27, 3:31 PM PST	Dense Fog Advisory	HNX	44 hr
Jan 29, 12:41 PM PST	Dense Fog Advisory	HNX	23 hr
Jan 30, 12:33 PM PST	Dense Fog Advisory	HNX	23 hr
Jan 31, 1:00 PM PST	Dense Fog Advisory	HNX	23 hr
Feb 1, 1:01 PM PST	Dense Fog Advisory	HNX	23 hr
Feb 2, 1:39 PM PST	Dense Fog Advisory	HNX	70 hr
Feb 6, 2:04 PM PST	Dense Fog Advisory	HNX	20 hr
Feb 7, 2:48 PM PST	Dense Fog Advisory	HNX	19 hr
Feb 8, 4:32 PM PST	Dense Fog Advisory	HNX	18 hr
Feb 9, 12:48 PM PST	Wind Advisory	HNX	48 hr
Feb 12, 1:34 PM PST	Dense Fog Advisory	HNX	44 hr
Feb 14, 2:04 PM PST	Wind Advisory	HNX	6 days
Feb 16, 3:22 PM PST	Special Weather Statement	HNX	38 min
Feb 18, 7:22 PM PST	Freeze Watch	HNX	25 hr
Feb 19, 8:49 PM PST	Freeze Warning	HNX	36 hr
Feb 25, 12:19 PM PST	Dense Fog Advisory	HNX	22 hr
Feb 26, 12:31 PM PST	Dense Fog Advisory	HNX	21 hr
Apr 9, 5:01 PM PDT	Special Weather Statement	HNX	29 min
Apr 9, 5:18 PM PDT	Special Weather Statement	HNX	57 min
Apr 9, 5:29 PM PDT	Severe Thunderstorm Warning	HNX	61 min
Apr 9, 6:24 PM PDT	Severe Thunderstorm Warning	HNX	34 min
Apr 9, 6:38 PM PDT	Special Weather Statement	HNX	67 min
Apr 9, 7:19 PM PDT	Special Weather Statement	HNX	26 min
Apr 9, 7:46 PM PDT	Special Weather Statement	HNX	29 min
Apr 9, 8:14 PM PDT	Special Weather Statement	HNX	31 min
Apr 9, 8:44 PM PDT	Special Weather Statement	HNX	31 min
Apr 10, 1:31 PM PDT	Special Weather Statement	HNX	29 min
Apr 10, 1:33 PM PDT	Special Weather Statement	HNX	42 min
Apr 10, 1:42 PM PDT	Special Weather Statement	HNX	33 min
Apr 10, 1:48 PM PDT	Mesoscale Discussion	SPC	117 min
Apr 10, 2:01 PM PDT	Special Weather Statement	HNX	44 min
Apr 10, 2:09 PM PDT	Severe Thunderstorm Warning	HNX	36 min
Apr 10, 2:41 PM PDT	Special Weather Statement	HNX	34 min
Apr 10, 2:44 PM PDT	Special Weather Statement	HNX	31 min
Apr 10, 3:15 PM PDT	Special Weather Statement	HNX	30 min
Apr 21, 11:33 AM PDT	Special Weather Statement	HNX	27 min
Apr 21, 11:34 AM PDT	Mesoscale Discussion	SPC	116 min
Apr 21, 12:16 PM PDT	Special Weather Statement	HNX	29 min
Apr 21, 3:10 PM PDT	Special Weather Statement	HNX	35 min
Apr 21, 3:19 PM PDT	Severe Thunderstorm Warning	HNX	26 min
Apr 21, 3:43 PM PDT	Severe Thunderstorm Warning	HNX	32 min
May 8, 11:34 AM PDT	Heat Advisory	HNX	4 days
May 11, 7:05 PM PDT	Wind Advisory	HNX	37 hr
May 12, 9:52 AM PDT	Red Flag Warning	HNX	12 hr
May 12, 3:06 PM PDT	Lake Wind Advisory	HNX	35 hr
May 14, 10:21 AM PDT	Fire Weather Watch	HNX	25 hr
May 14, 10:53 AM PDT	Lake Wind Advisory	HNX	4 days
May 15, 11:38 AM PDT	Red Flag Warning	HNX	3 days
Jun 5, 9:48 AM PDT	Lake Wind Advisory	HNX	40 hr
Jun 7, 9:59 AM PDT	Wind Advisory	HNX	43 hr
Jun 9, 11:02 AM PDT	Heat Advisory	HNX	7 days
Jun 17, 9:08 AM PDT	Lake Wind Advisory	HNX	14 hr
Jun 18, 3:41 AM PDT	Lake Wind Advisory	HNX	25 hr
Jun 20, 12:00 PM PDT	Lake Wind Advisory	HNX	12 hr
Jun 21, 10:56 AM PDT	Lake Wind Advisory	HNX	12 hr
Jun 22, 11:15 AM PDT	Lake Wind Advisory	HNX	12 hr
Jun 23, 1:43 PM PDT	Lake Wind Advisory	HNX	8 hr
Jun 24, 1:36 PM PDT	Lake Wind Advisory	HNX	11 hr
Jun 25, 2:19 PM PDT	Lake Wind Advisory	HNX	33 hr
Jun 27, 1:02 PM PDT	Lake Wind Advisory	HNX	13 hr
Jun 29, 12:00 PM PDT	Lake Wind Advisory	HNX	11 days
Jul 13, 11:43 AM PDT	Heat Advisory	HNX	3 days
Jul 28, 9:26 AM PDT	Extreme Heat Warning	HNX	13 days
Jul 30, 1:27 PM PDT	Heat Advisory	HNX	9 days
Aug 13, 12:23 AM PDT	Special Weather Statement	HNX	37 min
Aug 13, 12:59 AM PDT	Special Weather Statement	HNX	31 min
Aug 13, 9:32 AM PDT	Lake Wind Advisory	HNX	16 hr
Aug 24, 2:00 PM PDT	Lake Wind Advisory	HNX	6 hr
Sep 7, 10:57 AM PDT	Heat Advisory	HNX	3 days
Sep 11, 6:28 PM PDT	Lake Wind Advisory	HNX	53 hr
Sep 11, 6:28 PM PDT	Wind Advisory	HNX	41 hr
Sep 14, 10:46 AM PDT	Lake Wind Advisory	HNX	53 min
Sep 14, 11:39 AM PDT	Lake Wind Advisory	HNX	60 hr
Sep 21, 3:46 AM PDT	Lake Wind Advisory	HNX	25 hr
Sep 24, 9:58 AM PDT	Lake Wind Advisory	HNX	10 hr
Sep 26, 9:33 AM PDT	Lake Wind Advisory	HNX	13 hr
Sep 27, 10:23 AM PDT	Lake Wind Advisory	HNX	33 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	5
Mesoscale Discussion	2
Special Weather Statement	26
Flooding
Flood Watch	1
Areal Flood Advisory	4
Heat
Extreme Heat Warning	1
Heat Advisory	5
Cold
Freeze Warning	4
Freeze Watch	1
Wind and dust
Lake Wind Advisory	23
Wind Advisory	5
Fire
Red Flag Warning	2
Fire Weather Watch	1
Fog and smoke
Dense Fog Advisory	28

The busiest days

Days with the most alerts issued, by UTC date.

Nearby

Alerts in force now Tornadoes on record Forecast The radar archive 2025

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.