Weather alerts in California, 2015

3,147 weather alerts in 2015, 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 2015. Tap one for its archive.

Alerts: 3,147
Warnings: 823
Watches: 278
Advisories: 1,392
Busiest month: July570 alerts
Busiest day: October 15, 201554 alerts

Over time

By month

The alerts

3,147 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	141
Tornado Warning	6
Severe Thunderstorm Watch	1
Mesoscale Discussion	9
Special Weather Statement	582
Flooding
Areal Flood Warning	14
Flash Flood Warning	226
River Flood Warning	8
Flash Flood Watch	51
Flood Watch	10
River Flood Watch	1
Areal Flood Advisory	206
River Flood Advisory	2
Winter
Winter Storm Warning	39
Winter Storm Watch	30
Freezing Rain Advisory	1
Winter Weather Advisory	105
Heat
Excessive Heat Warning	12
Excessive Heat Watch	8
Heat Advisory	21
Cold
Freeze Warning	71
Hard Freeze Warning	21
Freeze Watch	34
Hard Freeze Watch	11
Frost Advisory	95
Wind and dust
Dust Storm Warning	5
High Wind Warning	46
High Wind Watch	35
Blowing Dust Advisory	20
Lake Wind Advisory	40
Wind Advisory	247
Fire
Red Flag Warning	63
Fire Weather Watch	37
Fog and smoke
Dense Fog Advisory	88
Dense Smoke Advisory	2
Coast and beach
Coastal Flood Warning	2
High Surf Warning	5
Coastal Flood Watch	1
Coastal Flood Advisory	20
High Surf Advisory	34
Tsunami Advisory	1
Beach Hazards Statement	59
Coastal Flood Statement	4
Marine
Gale Warning	84
Hazardous Seas Warning	45
Special Marine Warning	31
Storm Warning	4
Gale Watch	51
Hazardous Seas Watch	6
Storm Watch	2
Marine Dense Fog Advisory	10
Small Craft Advisory	437
Small Craft Advisory for Hazardous Seas	34
Small Craft Advisory for Rough Bar	22
Small Craft Advisory for Winds	7

By county

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

18 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 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. Rebuilt daily.