Weather alerts in California, 2019

4,014 weather alerts in 2019, 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 2019. Tap one for its archive.

Alerts: 4,014
Warnings: 1,005
Watches: 429
Advisories: 1,887
Busiest month: February658 alerts
Busiest day: January 17, 201978 alerts

Over time

By month

The alerts

4,014 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	91
Tornado Warning	22
Mesoscale Discussion	9
Special Weather Statement	617
Flooding
Areal Flood Warning	52
Flash Flood Warning	175
River Flood Warning	51
Flash Flood Watch	61
Flood Watch	23
River Flood Watch	9
Areal Flood Advisory	351
River Flood Advisory	2
Winter
Blizzard Warning	4
Winter Storm Warning	102
Winter Storm Watch	101
Winter Weather Advisory	195
Heat
Excessive Heat Warning	32
Excessive Heat Watch	20
Heat Advisory	53
Cold
Freeze Warning	62
Hard Freeze Warning	13
Freeze Watch	34
Hard Freeze Watch	6
Frost Advisory	76
Wind and dust
Dust Storm Warning	12
High Wind Warning	76
High Wind Watch	39
Blowing Dust Advisory	4
Dust Storm Advisory	7
Lake Wind Advisory	38
Wind Advisory	371
Fire
Red Flag Warning	69
Fire Weather Watch	47
Fog and smoke
Dense Fog Advisory	79
Dense Smoke Advisory	1
Freezing Fog Advisory	4
Coast and beach
Coastal Flood Warning	1
High Surf Warning	5
Coastal Flood Advisory	28
High Surf Advisory	54
Beach Hazards Statement	67
Marine
Gale Warning	123
Hazardous Seas Warning	27
Special Marine Warning	82
Storm Warning	6
Gale Watch	77
Hazardous Seas Watch	7
Storm Watch	5
Marine Dense Fog Advisory	2
Small Craft Advisory	569
Small Craft Advisory for Hazardous Seas	18
Small Craft Advisory for Rough Bar	31
Small Craft Advisory for Winds	4

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 2018 2020

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.