Weather alerts in California, 2013

2,901 weather alerts in 2013, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered any part of the state, so the counties below add up to more than the state.

Weather alerts by county

Each county as a circle sized by its count in 2013. Tap one for its archive.

Alerts: 2,901
Warnings: 814
Watches: 280
Advisories: 1,424
Busiest month: August403 alerts
Busiest day: August 18, 201339 alerts

Over time

By month

The alerts

2,901 alerts are too many to list on one page. Narrow it to a product above, to a month in the chart, or to a county.

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	133
Tornado Warning	2
Mesoscale Discussion	10
Special Weather Statement	327
Flooding
Areal Flood Warning	4
Flash Flood Warning	244
Flash Flood Watch	41
Flood Watch	1
Areal Flood Advisory	163
Winter
Winter Storm Warning	23
Winter Storm Watch	16
Freezing Rain Advisory	2
Winter Weather Advisory	77
Heat
Excessive Heat Warning	11
Excessive Heat Watch	9
Heat Advisory	6
Cold
Freeze Warning	69
Hard Freeze Warning	15
Freeze Watch	37
Hard Freeze Watch	5
Frost Advisory	117
Wind Chill Advisory	2
Wind and dust
Dust Storm Warning	4
High Wind Warning	68
High Wind Watch	38
Blowing Dust Advisory	16
Lake Wind Advisory	53
Wind Advisory	335
Fire
Red Flag Warning	84
Fire Weather Watch	61
Fog and smoke
Air Stagnation Advisory	1
Dense Fog Advisory	86
Dense Smoke Advisory	2
Freezing Fog Advisory	7
Coast and beach
Coastal Flood Advisory	4
High Surf Advisory	38
Beach Hazards Statement	37
Coastal Flood Statement	8
Rip Current Statement	1
Marine
Gale Warning	96
Hazardous Seas Warning	35
Special Marine Warning	23
Storm Warning	3
Gale Watch	64
Hazardous Seas Watch	8
Marine Dense Fog Advisory	6
Small Craft Advisory	439
Small Craft Advisory for Hazardous Seas	27
Small Craft Advisory for Rough Bar	28
Small Craft Advisory for Winds	15

By county

Every county with at least one alert. A county page lists each alert that covered it.

17 more counties

The busiest days

Days with the most alerts issued, by UTC date.

Nearby

Alerts in force now Tornadoes on record The radar archive 2012 2014

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. Rebuilt daily.