Los Angeles County, California
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Watch/Warnings
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The National Weather Service's Watches, Warnings and Advisories by state counties include: Thunderstorm, Tornado, Flood, Flash Flood, Winter Storm, High Wind, Gale, Small Aircraft, High Surf, Marine, Heat, Air Quality, Ashfall, Hazardous, and Special Statements.
Weather Alerts: Los Angeles County, California
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Excessive Heat Warning
CAZ059-222230-
/O.CON.KLOX.EH.W.0001.000000T0000Z-170626T0400Z/
Antelope Valley-
Including the cities of Lancaster and Palmdale
319 AM PDT Thu Jun 22 2017

...EXCESSIVE HEAT WARNING REMAINS IN EFFECT UNTIL 9 PM PDT
SUNDAY...

* TEMPERATURES...105-110 degrees.

* Impacts...The very high temperatures will create a dangerous
situation in which there is an increased threat of heat
related illnesses. Temperatures inside vehicles, even if the
windows are partially open, can quickly rise to life-
threatening levels. The extended heat wave will also bring
elevated fire weather conditions through the weekend.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Never, ever, leave people or pets in enclosed vehicles, even for
a short period of time.

Take extra precautions if you work or spend time outside. When
possible, reschedule strenuous activities to early morning or
evening. Know the signs and symptoms of heat exhaustion and heat
stroke. Wear light weight and loose fitting clothing when
possible and drink plenty of water.

To reduce risk during outdoor work the occupational safety and
health administration recommends scheduling frequent rest breaks
in shaded or air conditioned environments. Anyone overcome by
heat should be moved to a cool and shaded location. Heat stroke
is an emergency - call 911.

&&

$$

Excessive Heat Warning
CAZ054-222230-
/O.CON.KLOX.EH.W.0001.000000T0000Z-170626T0400Z/
Los Angeles County Mountains excluding the Santa Monica Range-
Including the cities of Acton, Mount Wilson, and Sandberg
319 AM PDT Thu Jun 22 2017

...EXCESSIVE HEAT WARNING REMAINS IN EFFECT UNTIL 9 PM PDT
SUNDAY...

* TEMPERATURES...100-105 degrees across lower elevations. Night-
time temperatures in the 70s to around 80 degrees will be
common.

* IMPACTS...The very high temperatures will create a dangerous
situation in which there is an increased threat of heat
related illnesses. Temperatures inside vehicles, even if the
windows are partially open, can quickly rise to life-
threatening levels. The extended heat wave will also bring
elevated fire danger through the weekend, with critical fire
weather conditions on Thursday.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Never, ever, leave people or pets in enclosed vehicles, even for
a short period of time.

Take extra precautions if you work or spend time outside. When
possible, reschedule strenuous activities to early morning or
evening. Know the signs and symptoms of heat exhaustion and heat
stroke. Wear light weight and loose fitting clothing when
possible and drink plenty of water.

To reduce risk during outdoor work the occupational safety and
health administration recommends scheduling frequent rest breaks
in shaded or air conditioned environments. Anyone overcome by
heat should be moved to a cool and shaded location. Heat stroke
is an emergency - call 911.

&&

$$

Fire Weather Warning
CAZ254-221700-
/O.UPG.KLOX.FW.A.0001.170622T1600Z-170623T0400Z/
/O.NEW.KLOX.FW.W.0001.170622T1600Z-170623T0400Z/
Los Angeles County Mountains / Angeles National Forest-
304 PM PDT Wed Jun 21 2017

...RED FLAG WARNING IN EFFECT FROM 9 AM TO 9 PM PDT THURSDAY FOR
WIND AND LOW RELATIVE HUMIDITY FOR THE INTERIOR LOS ANGELES
COUNTY MOUNTAINS...

THE NATIONAL WEATHER SERVICE IN Los Angeles/Oxnard HAS ISSUED a
Red Flag Warning FOR WIND AND LOW RELATIVE HUMIDITY...WHICH IS IN
EFFECT from 9 AM to 9 PM PDT Thursday.

* Winds...Southwest 15 to 25 mph with gusts to 35 mph. Localized
20 to 30 mph with gusts to 45 mph in the foothills of the
Antelope Valley.

* Relative Humidity...Minimums of 3 to 15 percent. Lowest across
the higher elevations and interior foothills into the Antelope
Valley.

* Temperatures...Maximums of 98 to 105 in the lower mountain
elevations and foothills and 85 to 95 in the higher elevations.

* Impacts...If fire ignition occurs, conditions may be favorable
for extreme fire behavior which would threaten life and
property.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Red Flag Warning means that critical fire weather conditions
are either occurring now....or will shortly. A combination of
strong winds...low relative humidity...and warm temperatures can
contribute to extreme fire behavior.

&&

$$

Heat Advisory
CAZ038-052-053-088-222230-
/O.CON.KLOX.HT.Y.0001.000000T0000Z-170626T0400Z/
Cuyama Valley-Santa Barbara County Mountains-
Ventura County Mountains-Santa Clarita Valley-
Including the cities of Cuyama, San Marcos Pass,
San Rafael Wilderness Area, Dick Smith Wilderness Area,
Lockwood Valley, Mount Pinos, Santa Clarita, Newhall,
and Valencia
319 AM PDT Thu Jun 22 2017

...HEAT ADVISORY REMAINS IN EFFECT UNTIL 9 PM PDT SUNDAY...

* TEMPERATURES...100-105 degrees. Across the elevated foothills
and mountains, night-time temperatures in the 70s will be
likely.

* IMPACTS...The very high temperatures could create a dangerous
situation in which heat related illnesses are possible.
Temperatures inside vehicles, even if the windows are
partially open, can quickly rise to life-threatening levels.
The extended heat wave will also bring elevated fire danger
through the weekend.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Never, ever, leave people or pets in enclosed vehicles, even for
a short period of time.

Take extra precautions if you work or spend time outside. When
possible, reschedule strenuous activities to early morning or
evening. Know the signs and symptoms of heat exhaustion and heat
stroke. Wear light weight and loose fitting clothing when
possible and drink plenty of water.

&&

$$
National Weather Service

Providing "weather, water cycle, and climate forecasts and warnings for the United States, its territories, adjacent waters and ocean areas, for the protection of life and property and the enhancement of the national economy."
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