Weather Alerts for Chelan & Douglas Counties

Issued by the National Weather Service

Excessive Heat Warning  EXCESSIVE HEAT WARNING   Excessive Heat Warning
CHELAN & DOUGLAS COUNTIES

Areas Affected:
Central Chelan County - Moses Lake Area - Okanogan Valley - Upper Columbia Basin - Waterville Plateau - Wenatchee Area
Effective: Wed, 8/17 12:00pm Updated: Wed, 8/17 8:30am Urgency: Expected
Expires: Fri, 8/19 11:00pm Severity:  Moderate  Certainty: Likely

 
Details:
...EXCESSIVE HEAT WARNING REMAINS IN EFFECT FROM NOON TODAY TO 11 PM
PDT FRIDAY...
* WHAT...Afternoon temperatures will reach the upper 90s to near 105
degrees. Limited overnight relief with low temperatures in the mid
60s to mid 70s.
* WHERE...Quincy, Brewster, Waterville, Nespelem, Ephrata, Odessa,
Othello, Wenatchee, Moses Lake, Coulee City, Wilbur, Bridgeport,
Leavenworth, Omak, Grand Coulee, Oroville, Chelan, and Ritzville.
* WHEN...From Noon today to 11 PM PDT Friday.
* IMPACTS...Excessive heat will significantly increase the potential
for heat related illnesses, particularly for those working or
participating in outdoor activities. Residents without air
conditioners will experience a buildup of heat within their homes.
* ADDITIONAL DETAILS...Thursday is expected to be the hottest day of
this heatwave. Most of central Washington will experience triple
digit heat with near record high temperatures.

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

Red Flag Warning  RED FLAG WARNING   Red Flag Warning
CHELAN & DOUGLAS COUNTIES

Areas Affected:
East Washington Central Cascades
Effective: Wed, 8/17 11:00am Updated: Wed, 8/17 8:30am Urgency: Expected
Expires: Thu, 8/18 10:00pm Severity:  Severe  Certainty: Likely

 
Details:
...HOT DRY AND UNSTABLE WEDNESDAY AND THURSDAY...
.HIGH TEMPERATURES WILL CLIMB INTO THE UPPER 90S TO TRIPLE DIGITS
WEDNESDAY AND THURSDAY. THE HEAT COUPLED WITH AN UNSTABLE
ATMOSPHERE WEDNESAY AND THURSDAY WILL INCREASE FIRE DANGER. WARM
OVERNIGHT LOW TEMPERATURES AND POOR OVERNIGHT RELATIVE HUMIDITY
RECOVERY WILL ALSO CONTRIBUTE TO FIRE CONCERNS OVERNIGHT WEDNESDAY
INTO THURSDAY MORNING.
...RED FLAG WARNING REMAINS IN EFFECT FROM 11 AM THIS MORNING TO
10 PM PDT THURSDAY FOR UNSTABLE THERMAL TROUGH FOR THE EAST
WASHINGTON CENTRAL CASCADES...
* Affected Area: Fire Weather Zone 696 East Washington Central
Cascades (Zone 696).
* Winds: East 4 to 8 mph.
* Timing: Wednesday afternoon through Thursday evening.
* Relative Humidities: Afternoon values as low as 10 to 20 percent
in the valleys and 20 to 30 percent over the higher terrain.
Overnight recovery values of 40 to 50 percent with some thermal
belt locations as poor as 35 percent.
* Temperatures: High temperatures upper 90s to 105 in the valleys.
* Impacts: Increased potential for rapid fire growth for large
fires.

Information:
A Red Flag Warning means that critical fire weather conditions
are either occurring now, or will shortly. A combination of low
relative humidity, hot conditions, and an unstable atmosphere can
contribute to extreme fire behavior.

Heat Advisory  HEAT ADVISORY   Heat Advisory
CHELAN & DOUGLAS COUNTIES

Areas Affected:
Western Chelan County
Effective: Wed, 8/17 12:00pm Updated: Wed, 8/17 8:30am Urgency: Expected
Expires: Fri, 8/19 11:00pm Severity: Minor Certainty: Likely

 
Details:
...HEAT ADVISORY REMAINS IN EFFECT FROM NOON TODAY TO 11 PM PDT
FRIDAY...
* WHAT...Afternoon temperatures in the mid 90s to around 102, with
overnight lows in the 60s, in the lower elevations.
* WHERE...Holden Village, Lucerne, and Stehekin.
* WHEN...From Noon today to 11 PM PDT Friday.
* IMPACTS...Hot temperatures will significantly increase the
potential for heat related illnesses, particularly for those
sensitive to heat. Residents without air conditioners will
experience a buildup of heat within their homes during the
afternoon and evening hours.
* ADDITIONAL DETAILS...Temperatures will remain quite hot into the
weekend with low to mid 90s likely on Saturday and Sunday.

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