* WHAT...Dangerously hot conditions. Afternoon temperatures 109 to
117. Major Heat Risk.

* WHERE...Portions of southwest Arizona and southeast California.

* WHEN...Until 8 PM MST /8 PM PDT/ Thursday.

* IMPACTS...Heat related illnesses increase significantly during
extreme heat events. Overexposure can cause heat cramps and heat
exhaustion to develop and, without intervention, can lead to heat
stroke.

An Extreme Heat Warning means that a period of very hot temperatures,
even by local standards, will occur. Actions should be taken to
lessen the impact of the extreme heat.

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 lightweight 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 9 1 1.

Public cooling shelters are available in some areas. Consult county
officials for more details.

* WHAT...Dangerously hot conditions with high temperatures up to 117
expected. Nights will remain quite warm with low temperatures
mostly in the 80s.

* WHERE...Coachella Valley.

* WHEN...Until 8 PM PDT Thursday.

* IMPACTS...Heat related illnesses increase significantly during
extreme heat events.

Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.

* WHAT...Dangerously hot conditions with high temperatures up to 114
in the northern Coachella Valley expected. Nights will remain
quite warm in the northern Coachella Valley with low temperatures
mostly in the 80s.

* WHERE...San Gorgonio Pass near Banning.

* WHEN...Until 8 PM PDT Thursday.

* IMPACTS...Heat related illnesses increase significantly during
extreme heat events.

Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.

* WHAT...High temperatures near 90 to 102 below 6000 feet expected.

* WHERE...Riverside County Mountains.

* WHEN...From 10 AM this morning to 8 PM PDT Thursday.

* IMPACTS...Hot temperatures may cause heat illnesses.

Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.

* WHAT...High temperatures in the mid 90s to 105 expected.

* WHERE...San Bernardino and Riverside County Valleys-The Inland
Empire.

* WHEN...From 10 AM this morning to 8 PM PDT Thursday.

* IMPACTS...Hot temperatures may cause heat illnesses.

Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.