437  
WWUS76 KSEW 171008  
NPWSEW  
 
URGENT - WEATHER MESSAGE  
NATIONAL WEATHER SERVICE SEATTLE WA  
308 AM PDT WED AUG 17 2022  
 
WAZ567>569-172300-  
/O.CON.KSEW.EH.W.0002.220817T1900Z-220819T0700Z/  
WEST SLOPES NORTH CASCADES AND PASSES-  
WEST SLOPES NORTH CENTRAL CASCADES AND PASSES-  
WEST SLOPES SOUTH CENTRAL CASCADES AND PASSES-  
INCLUDING THE CITIES OF CONCRETE, LYMAN, HAMILTON, DARRINGTON,  
AND MORTON  
308 AM PDT WED AUG 17 2022  
 
...EXCESSIVE HEAT WARNING REMAINS IN EFFECT FROM NOON TODAY TO  
MIDNIGHT PDT THURSDAY NIGHT...  
 
* WHAT...DANGEROUSLY HOT CONDITIONS WITH TEMPERATURES IN THE  
CASCADE VALLEYS IN THE UPPER 90S AND APPROACHING 100 DEGREES ARE  
EXPECTED ON WEDNESDAY AND THURSDAY. OVERNIGHT LOWS WILL REMAIN  
IN THE 60S. THIS WILL POSE A VERY HIGH RISK OF HEAT-RELATED  
ILLNESS FOR LOCATIONS BELOW 2000 FEET.  
 
* WHERE...WEST SLOPES SOUTH CENTRAL CASCADES AND PASSES, WEST  
SLOPES NORTH CENTRAL CASCADES AND PASSES AND WEST SLOPES NORTH  
CASCADES AND PASSES.  
 
* WHEN...FROM NOON TODAY TO MIDNIGHT PDT THURSDAY NIGHT.  
 
* IMPACTS...EXTREME HEAT WILL SIGNIFICANTLY INCREASE THE RISK OF  
HEAT-RELATED ILLNESSES FOR MUCH OF THE POPULATION, ESPECIALLY  
THOSE WHO ARE HEAT SENSITIVE AND THOSE WITHOUT EFFECTIVE COOLING  
OR ADEQUATE HYDRATION.  
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...  
 
DRINK PLENTY OF FLUIDS, STAY IN AN AIR-CONDITIONED ROOM, STAY OUT  
OF THE SUN, AND CHECK UP ON RELATIVES AND NEIGHBORS. YOUNG  
CHILDREN AND PETS SHOULD NEVER BE LEFT UNATTENDED IN VEHICLES  
UNDER ANY CIRCUMSTANCES.  
 
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. 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.  
 
FOR SHELTERING INFORMATION AND OTHER HUMAN SERVICES IN YOUR AREA,  
DIAL 2 1 1 DURING BUSINESS HOURS OR VISIT WA211.ORG ANYTIME.  
 

 
 

 
 
WAZ503-504-506-507-509-511-512-555-556-558-559-172300-  
/O.CON.KSEW.HT.Y.0005.220817T1900Z-220819T0700Z/  
WESTERN WHATCOM COUNTY-SOUTHWEST INTERIOR-WESTERN SKAGIT COUNTY-  
EVERETT AND VICINITY-TACOMA AREA-HOOD CANAL AREA-  
LOWER CHEHALIS VALLEY AREA-EAST PUGET SOUND LOWLANDS-  
BELLEVUE AND VICINITY-SEATTLE AND VICINITY-BREMERTON AND VICINITY-  
INCLUDING THE CITIES OF BELLINGHAM, OLYMPIA, LACEY, TUMWATER,  
MOUNT VERNON, ANACORTES, SEDRO-WOOLLEY, BURLINGTON, EVERETT,  
EDMONDS, LYNNWOOD, MARYSVILLE, TACOMA, SHELTON, MONTESANO, ELMA,  
MCCLEARY, COVINGTON-SAWYER-W, MAPLE VALLEY, MONROE,  
PRAIRIE RIDGE, ENUMCLAW, BONNEY LAKE, WOODINVILLE, REDMOND,  
KIRKLAND, BOTHELL, KENMORE, NEWPORT HILLS, SAHALEE, PINE LAKE,  
SEATTLE, BREMERTON, AND SILVERDALE  
308 AM PDT WED AUG 17 2022  
 
...HEAT ADVISORY REMAINS IN EFFECT FROM NOON TODAY TO MIDNIGHT  
PDT THURSDAY NIGHT...  
 
* WHAT...HOT CONDITIONS WITH TEMPERATURES IN THE MID 80S TO MID  
90S EXPECTED. THIS WILL POSE A MODERATE TO HIGH RISK OF HEAT-  
RELATED ILLNESS.  
 
* WHERE...NORTHWEST INTERIOR, EVERETT AND VICINITY, TACOMA AREA,  
BELLEVUE AND VICINITY, EAST PUGET SOUND LOWLANDS, LOWER CHEHALIS  
VALLEY AREA, HOOD CANAL AREA, SOUTHWEST INTERIOR, SEATTLE AND  
VICINITY AND BREMERTON AND VICINITY.  
 
* WHEN...FROM NOON TODAY TO MIDNIGHT PDT THURSDAY NIGHT.  
 
* IMPACTS...HEAT WILL INCREASE THE RISK OF HEAT-RELATED ILLNESSES  
FOR THOSE WHO ARE SENSITIVE TO HEAT, ESPECIALLY THOSE WITHOUT  
EFFECTIVE COOLING OR ADEQUATE HYDRATION.  
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...  
 
DRINK PLENTY OF FLUIDS, STAY IN AN AIR-CONDITIONED ROOM, STAY OUT  
OF THE SUN, AND CHECK UP ON RELATIVES AND NEIGHBORS. YOUNG  
CHILDREN AND PETS SHOULD NEVER BE LEFT UNATTENDED IN VEHICLES  
UNDER ANY CIRCUMSTANCES.  
 
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. 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.  
 
FOR SHELTERING INFORMATION AND OTHER HUMAN SERVICES IN YOUR AREA,  
DIAL 2 1 1 DURING BUSINESS HOURS OR VISIT WA211.ORG ANYTIME.  
 

 
 

 
 
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