Alert archive / Washington / Red Flag Warnings in 2016
Red Flag Warning 1, NWS Seattle, WA
NWS Seattle, WA issued this red flag warning at Aug 17, 2016, 2:37 PM PDT for 15 counties in Washington. It took effect at Aug 18, 2016, 8:00 AM PDT. It was in force for 62 hr. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Aug 17, 2016, 2:37 PM PDT (21:37 UTC)
- In effect from
- Aug 18, 2016, 8:00 AM PDT
- Expired
- Aug 20, 2016, 10:00 PM PDT
- In force
- 62 hr
- Issued by
- NWS Seattle, WA
Counties Clallam County, WA, Grays Harbor County, WA, Island County, WA, Jefferson County, WA, King County, WA, Kitsap County, WA, Lewis County, WA, Mason County, WA, Pierce County, WA, San Juan County, WA, Skagit County, WA, Skamania County, WA, Snohomish County, WA, Thurston County, WA, Whatcom County, WA
The radar
The Seattle radar (KATX), 66 km from the middle of the area, began a volume at 21:39 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
The nearest sounding before it
Quillayute State, WA (KUIL), launched 12:00Z, 9.6 hours before the alert went out and 145 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.
- Mixed-layer CAPE
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 758 m above ground
- 0-6 km bulk shear
- 13 kt
- 0-1 km storm-relative helicity
- 42 m²/s²
- 0-3 km storm-relative helicity
- 37 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
998 WWUS86 KSEW 172137 RFWSEW URGENT - FIRE WEATHER MESSAGE NATIONAL WEATHER SERVICE SEATTLE WA 237 PM PDT WED AUG 17 2016 ...A RED FLAG WARNING HAS BEEN ISSUED FOR THE WEST SLOPES OF THE NORTH CASCADES...MOST OF THE INTERIOR LOWLANDS AND THE NORTH COSTAL LOWLANDS THURSDAY THROUGH THURSDAY EVENING... ...A FIRE WEATHER WATCH REMAINS IN EFFECT FOR MUCH OF WESTERN WASHINGTON LATE THURSDAY NIGHT THROUGH FRIDAY EVENING... .HIGH PRESSURE DEVELOPING OVER THE INTERIOR OF CENTRAL BRITISH COLUMBIA WILL CAUSE NORTH TO NORTHEAST WINDS TO INCREASE ON THURSDAY. THE FLOW WILL TURN EASTERLY LATE THURSDAY NIGHT AND FRIDAY. THE BREEZES WILL COMBINE WITH LOW RELATIVE HUMIDITY...HOT TEMPERATURES AND INSTABILITY TO PRODUCE RED FLAG CONDITIONS ACROSS MUCH OF WESTERN WASHINGTON. WAZ650-653-654-656>658-180545- /O.NEW.KSEW.FW.W.0001.160818T1500Z-160819T0700Z/ /O.EXT.KSEW.FW.A.0001.160819T0700Z-160820T0700Z/ NORTH COASTAL LOWLANDS- STRAIT OF JUAN DE FUCA AND NORTHWEST INTERIOR LOWLANDS- CENTRAL AND SOUTH PUGET SOUND LOWLANDS- NORTHEAST PUGET SOUND LOWLANDS GENERALLY BELOW 1500 FEET- SOUTHEAST PUGET SOUND LOWLANDS GENERALLY BELOW 1500 FEET- WEST SLOPES OF THE NORTH CASCADES GENERALLY ABOVE 1500 FEET- 237 PM PDT WED AUG 17 2016 ...RED FLAG WARNING IN EFFECT FROM 8 AM THURSDAY TO MIDNIGHT PDT THURSDAY NIGHT FOR WIND AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONES 650...653...654...656...657 AND 658... ...FIRE WEATHER WATCH NOW IN EFFECT FROM LATE THURSDAY NIGHT THROUGH FRIDAY EVENING FOR A COMBINATION OF WINDS...LOW RELATIVE HUMIDITY AND INSTABILITY FOR FIRE WEATHER ZONES 650...653...654...656...657 AND 658... THE NATIONAL WEATHER SERVICE IN SEATTLE HAS ISSUED A RED FLAG WARNING...WHICH IS IN EFFECT FROM 8 AM THURSDAY TO MIDNIGHT PDT THURSDAY NIGHT. * AFFECTED AREA...FIRE WEATHER ZONE 650. FIRE WEATHER ZONE 653. FIRE WEATHER ZONE 654. FIRE WEATHER ZONE 656. FIRE WEATHER ZONE 657. FIRE WEATHER ZONE 658. THIS INCLUDES THE WEST SLOPES OF THE NORTH CASCADES...THE NORTHWEST INTERIOR LOWLANDS...THE NORTHEAST AND SOUTHEAST PUGET SOUND LOWLANDS...AND THE CENTRAL AND SOUTH PUGET SOUND LOWLANDS. * WIND...NORTHEAST TO NORTH 10 TO 18 MPH. ON EXPOSED RIDGES THE WIND WILL SHIFT TO THE NORTHEAST TO EAST THURSDAY NIGHT AND FRIDAY AND WILL INCREASE TO 15 TO 25 MPH ON EXPOSED RIDGES. * HUMIDITY...FALLING TO 10 TO 20 PERCENT DURING THE AFTERNOON HOURS THURSDAY AND FRIDAY. HUMIDITY WILL RECOVER TO 40 TO 60 PERCENT BELOW 1000 FEET THURSDAY NIGHT AND FRIDAY MORNING BUT WILL REMAIN BELOW 40 PERCENT ON EXPOSED RIDGES ABOVE 1000 FEET. * IMPACTS...CRITICAL FIRE WEATHER CONDITIONS ARE FORECAST TO OCCUR STARTING THURSDAY MORNING. PRECAUTIONARY/PREPAREDNESS ACTIONS... A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS ARE EITHER OCCURRING NOW...OR WILL SHORTLY. DRY...HOT AND WINDY CONDITIONS CAN CONTRIBUTE TO ACTIVE FIRE BEHAVIOR. IN WESTERN WASHINGTON...SIGNIFICANT GROWTH ON EXISTING FIRES HAS HISTORICALLY TAKEN PLACE UNDER SUCH CONDITIONS. ONCE THE RED FLAG WARNING EXPIRES...BACKGROUND FIRE DANGER DUE TO DRY FUELS WILL REMAIN. HOWEVER...THE WEATHER WILL BE LESS OF AN AGGRAVATING FACTOR. && $$ WAZ655-180545- /O.EXT.KSEW.FW.A.0001.160819T0700Z-160820T0700Z/ BLACK HILLS AND SOUTHWEST INTERIOR LOWLANDS- 237 PM PDT WED AUG 17 2016 ...FIRE WEATHER WATCH NOW IN EFFECT FROM LATE THURSDAY NIGHT THROUGH FRIDAY EVENING FOR WIND...LOW HUMIDITY AND INSTABILITY FOR FIRE WEATHER ZONE 655... * AFFECTED AREA...FIRE WEATHER ZONE 655. THIS INCLUDES THE BLACK HILLS AND SOUTHWEST INTERIOR LOWLANDS. * WIND...NORTHEAST TO NORTH 10 TO 18 MPH. ON EXPOSED RIDGES THE WIND WILL SHIFT TO THE NORTHEAST TO EAST THURSDAY NIGHT AND FRIDAY AND WILL INCREASE TO 15 TO 25 MPH ON EXPOSED RIDGES. * HUMIDITY...FALLING TO 10 TO 20 PERCENT DURING THE AFTERNOON HOURS THURSDAY AND FRIDAY. HUMIDITY WILL RECOVER TO 40 TO 60 PERCENT BELOW 1000 FEET THURSDAY NIGHT AND FRIDAY MORNING BUT WILL REMAIN BELOW 40 PERCENT ON EXPOSED RIDGES ABOVE 1000 FEET. * IMPACTS...CRITICAL FIRE WEATHER CONDITIONS ARE FORECAST TO OCCUR STARTING LATE THURSDAY NIGHT. MONITOR FORECASTS FOR POSSIBLE RED FLAG WARNINGS. PRECAUTIONARY/PREPAREDNESS ACTIONS... A FIRE WEATHER WATCH MEANS THAT CRITICAL FIRE WEATHER CONDITIONS ARE FORECAST TO OCCUR. MONITOR THE FORECASTS FOR POSSIBLE RED FLAG WARNINGS. && $$ WAZ651-652-659-661-180545- /O.CON.KSEW.FW.A.0001.160819T0700Z-160820T0700Z/ CENTRAL COASTAL LOWLANDS-WEST PORTION OF THE OLYMPIC MOUNTAINS- WEST SLOPES OF THE CENTRAL CASCADES GENERALLY ABOVE 1500 FEET- EAST PORTION OF THE OLYMPIC MOUNTAINS- 237 PM PDT WED AUG 17 2016 ...FIRE WEATHER WATCH REMAINS IN EFFECT FROM LATE THURSDAY NIGHT THROUGH FRIDAY EVENING FOR WIND...LOW HUMIDITY AND INSTABILITY FOR FIRE WEATHER ZONES 651...652...659 AND 661... * AFFECTED AREA...FIRE WEATHER ZONE 651. FIRE WEATHER ZONE 652. FIRE WEATHER ZONE 659. FIRE WEATHER ZONE 661. THIS INCLUDES THE CENTRAL COAST LOWLANDS...WEST AND EAST PORTIONS OF THE OLYMPIC MOUNTAINS...AND THE WEST SLOPES OF THE CENTRAL CASCADES. * WIND...EAST 10 TO 20 MPH...EXCEPT 15 TO 25 MPH ON EXPOSED RIDGES. * HUMIDITY...FALLING TO 10 TO 20 PERCENT LATE THURSDAY NIGHT AND FRIDAY. * IMPACTS...CRITICAL FIRE WEATHER CONDITIONS ARE FORECAST TO OCCUR STARTING LATE THURSDAY NIGHT. MONITOR FORECASTS FOR POSSIBLE RED FLAG WARNINGS. PRECAUTIONARY/PREPAREDNESS ACTIONS... A FIRE WEATHER WATCH MEANS THAT CRITICAL FIRE WEATHER CONDITIONS ARE FORECAST TO OCCUR. MONITOR THE FORECASTS FOR POSSIBLE RED FLAG WARNINGS. && $$ JBB
8 follow-up statements
197 WWUS86 KSEW 180455 RFWSEW URGENT - FIRE WEATHER MESSAGE NATIONAL WEATHER SERVICE SEATTLE WA 955 PM PDT WED AUG 17 2016 ...A RED FLAG WARNING CONTINUES FOR THE WEST SLOPES OF THE NORTH CASCADES...MOST OF THE INTERIOR LOWLANDS AND THE NORTH COASTAL LOWLANDS THURSDAY THROUGH THURSDAY EVENING... ...A FIRE WEATHER WATCH REMAINS IN EFFECT FOR MUCH OF WESTERN WASHINGTON LATE THURSDAY NIGHT THROUGH FRIDAY EVENING... .HIGH PRESSURE DEVELOPING OVER THE INTERIOR OF CENTRAL BRITISH COLUMBIA WILL CAUSE NORTH TO NORTHEAST WINDS TO INCREASE ON THURSDAY. THE FLOW WILL TURN EASTERLY LATE THURSDAY NIGHT AND FRIDAY. THE BREEZES WILL COMBINE WITH LOW RELATIVE HUMIDITY...HOT TEMPERATURES AND INSTABILITY TO PRODUCE RED FLAG CONDITIONS ACROSS MUCH OF WESTERN WASHINGTON. WAZ650-653-654-656>658-181600- /O.CON.KSEW.FW.W.0001.160818T1500Z-160819T0700Z/ /O.CON.KSEW.FW.A.0001.160819T0700Z-160820T0700Z/ NORTH COASTAL LOWLANDS- STRAIT OF JUAN DE FUCA AND NORTHWEST INTERIOR LOWLANDS- CENTRAL AND SOUTH PUGET SOUND LOWLANDS- NORTHEAST PUGET SOUND LOWLANDS GENERALLY BELOW 1500 FEET- SOUTHEAST PUGET SOUND LOWLANDS GENERALLY BELOW 1500 FEET- WEST SLOPES OF THE NORTH CASCADES GENERALLY ABOVE 1500 FEET- 955 PM PDT WED AUG 17 2016 ...RED FLAG WARNING REMAINS IN EFFECT FROM 8 AM THURSDAY TO MIDNIGHT PDT THURSDAY NIGHT FOR WIND AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONES 650...653...654...656...657 AND 658... ...FIRE WEATHER WATCH REMAINS IN EFFECT FROM LATE THURSDAY NIGHT THROUGH FRIDAY EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONES 650...653...654...656...657 AND 658... THE NATIONAL WEATHER SERVICE IN SEATTLE HAS ISSUED A RED FLAG WARNING...WHICH IS IN EFFECT FROM 8 AM THURSDAY TO MIDNIGHT PDT THURSDAY NIGHT. * AFFECTED AREA...FIRE WEATHER ZONE 650. FIRE WEATHER ZONE 653. FIRE WEATHER ZONE 654. FIRE WEATHER ZONE 656. FIRE WEATHER ZONE 657. FIRE WEATHER ZONE 658. THIS INCLUDES THE WEST SLOPES OF THE NORTH CASCADES...THE NORTHWEST INTERIOR LOWLANDS...THE NORTHEAST AND SOUTHEAST PUGET SOUND LOWLANDS... AND THE CENTRAL AND SOUTH PUGET SOUND LOWLANDS. * WIND...NORTHEAST TO NORTH 10 TO 18 MPH. ON EXPOSED RIDGES THE WIND WILL SHIFT TO THE NORTHEAST TO EAST THURSDAY NIGHT AND FRIDAY AND WILL INCREASE TO 15 TO 25 MPH ON EXPOSED RIDGES. * HUMIDITY...FALLING TO 10 TO 20 PERCENT DURING THE AFTERNOON HOURS THURSDAY AND FRIDAY. HUMIDITY WILL RECOVER TO 40 TO 60 PERCENT BELOW 1000 FEET THURSDAY NIGHT AND FRIDAY MORNING BUT WILL REMAIN BELOW 40 PERCENT ON EXPOSED RIDGES ABOVE 1000 FEET. * IMPACTS...CRITICAL FIRE WEATHER CONDITIONS ARE FORECAST TO OCCUR STARTING THURSDAY MORNING. PRECAUTIONARY/PREPAREDNESS ACTIONS... A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS ARE EITHER OCCURRING NOW...OR WILL SHORTLY. DRY...HOT AND WINDY CONDITIONS CAN CONTRIBUTE TO ACTIVE FIRE BEHAVIOR. IN WESTERN WASHINGTON...SIGNIFICANT GROWTH ON EXISTING FIRES HAS HISTORICALLY TAKEN PLACE UNDER SUCH CONDITIONS. ONCE THE RED FLAG WARNING EXPIRES...BACKGROUND FIRE DANGER DUE TO DRY FUELS WILL REMAIN. HOWEVER...THE WEATHER WILL BE LESS OF AN AGGRAVATING FACTOR. && $$ WAZ651-652-655-659-661-181600- /O.CON.KSEW.FW.A.0001.160819T0700Z-160820T0700Z/ CENTRAL COASTAL LOWLANDS-WEST PORTION OF THE OLYMPIC MOUNTAINS- BLACK HILLS AND SOUTHWEST INTERIOR LOWLANDS- WEST SLOPES OF THE CENTRAL CASCADES GENERALLY ABOVE 1500 FEET- EAST PORTION OF THE OLYMPIC MOUNTAINS- 955 PM PDT WED AUG 17 2016 ...FIRE WEATHER WATCH REMAINS IN EFFECT FROM LATE THURSDAY NIGHT THROUGH FRIDAY EVENING FOR WIND...LOW HUMIDITY AND INSTABILITY FOR FIRE WEATHER ZONES 651...652...659 AND 661... * AFFECTED AREA...FIRE WEATHER ZONE 651. FIRE WEATHER ZONE 652. FIRE WEATHER ZONE 659. FIRE WEATHER ZONE 661. THIS INCLUDES THE CENTRAL COAST LOWLANDS...WEST AND EAST PORTIONS OF THE OLYMPIC MOUNTAINS...AND THE WEST SLOPES OF THE CENTRAL CASCADES. * WIND...EAST 10 TO 20 MPH...EXCEPT 15 TO 25 MPH ON EXPOSED RIDGES. * HUMIDITY...FALLING TO 10 TO 20 PERCENT LATE THURSDAY NIGHT AND FRIDAY. * IMPACTS...CRITICAL FIRE WEATHER CONDITIONS ARE FORECAST TO OCCUR STARTING LATE THURSDAY NIGHT. MONITOR FORECASTS FOR POSSIBLE RED FLAG WARNINGS. PRECAUTIONARY/PREPAREDNESS ACTIONS... A FIRE WEATHER WATCH MEANS THAT CRITICAL FIRE WEATHER CONDITIONS ARE FORECAST TO OCCUR. MONITOR THE FORECASTS FOR POSSIBLE RED FLAG WARNINGS. && $$
489 WWUS86 KSEW 181453 RFWSEW URGENT - FIRE WEATHER MESSAGE NATIONAL WEATHER SERVICE SEATTLE WA 753 AM PDT THU AUG 18 2016 ...A RED FLAG WARNING CONTINUES FOR THE WEST SLOPES OF THE NORTH CASCADES...MOST OF THE INTERIOR LOWLANDS AND THE NORTH COASTAL LOWLANDS THURSDAY THROUGH THURSDAY EVENING... ...A FIRE WEATHER WATCH REMAINS IN EFFECT FOR MUCH OF WESTERN WASHINGTON LATE THURSDAY NIGHT THROUGH FRIDAY EVENING... .HIGH PRESSURE OVER THE INTERIOR OF CENTRAL BRITISH COLUMBIA WILL GIVE BREEZY NORTH TO NORTHEAST WINDS TODAY. THE WINDS WILL TURN TO THE EAST TONIGHT. THE BREEZES WILL COMBINE WITH LOW RELATIVE HUMIDITIES TO GIVE RED FLAG CONDITIONS TO MUCH OF THE AREA THROUGH THIS EVENING. RED FLAG CONDITIONS ARE POSSIBLE LATE TONIGHT THROUGH FRIDAY NIGHT ACROSS MUCH OF THE AREA AS WINDS TURN MORE TO THE EAST...TEMPERATURES REMAIN HIGH...AND RELATIVE HUMIDITIES REMAIN LOW. WAZ650-653-654-656>658-182300- /O.CON.KSEW.FW.W.0001.160818T1500Z-160819T0700Z/ /O.CON.KSEW.FW.A.0001.160819T0700Z-160820T0700Z/ NORTH COASTAL LOWLANDS- STRAIT OF JUAN DE FUCA AND NORTHWEST INTERIOR LOWLANDS- CENTRAL AND SOUTH PUGET SOUND LOWLANDS- NORTHEAST PUGET SOUND LOWLANDS GENERALLY BELOW 1500 FEET- SOUTHEAST PUGET SOUND LOWLANDS GENERALLY BELOW 1500 FEET- WEST SLOPES OF THE NORTH CASCADES GENERALLY ABOVE 1500 FEET- 753 AM PDT THU AUG 18 2016 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL MIDNIGHT PDT TONIGHT FOR WIND AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONES 650... 653...654...656...657 AND 658... ...FIRE WEATHER WATCH REMAINS IN EFFECT FROM LATE TONIGHT THROUGH FRIDAY EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONES 650...653... 654...656...657 AND 658... * AFFECTED AREA...FIRE WEATHER ZONE 650. FIRE WEATHER ZONE 653. FIRE WEATHER ZONE 654. FIRE WEATHER ZONE 656. FIRE WEATHER ZONE 657. FIRE WEATHER ZONE 658. THIS INCLUDES THE WEST SLOPES OF THE NORTH CASCADES...THE NORTHWEST INTERIOR LOWLANDS...THE NORTHEAST AND SOUTHEAST PUGET SOUND LOWLANDS...AND THE CENTRAL AND SOUTH PUGET SOUND LOWLANDS. * WIND...NORTHEAST TO NORTH 10 TO 18 MPH. ON EXPOSED RIDGES THE WIND WILL SHIFT TO THE NORTHEAST TO EAST LATE TONIGHT AND FRIDAY AND WILL INCREASE TO 15 TO 25 MPH ON EXPOSED RIDGES. * HUMIDITY...FALLING TO 10 TO 20 PERCENT DURING THE AFTERNOON HOURS TODAY AND FRIDAY. HUMIDITY WILL RECOVER TO 40 TO 60 PERCENT BELOW 1000 FEET THURSDAY NIGHT AND FRIDAY MORNING BUT WILL REMAIN BELOW 40 PERCENT ON EXPOSED RIDGES ABOVE 1000 FEET. * IMPACTS...CRITICAL FIRE WEATHER CONDITIONS ARE EXPECTED THROUGH AT LEAST THIS EVENING AND ARE LIKELY TO CONTINUE INTO FRIDAY EVENING. PRECAUTIONARY/PREPAREDNESS ACTIONS... A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS ARE EITHER OCCURRING NOW...OR WILL SHORTLY. DRY...HOT AND WINDY CONDITIONS CAN CONTRIBUTE TO ACTIVE FIRE BEHAVIOR. IN WESTERN WASHINGTON...SIGNIFICANT GROWTH ON EXISTING FIRES HAS HISTORICALLY TAKEN PLACE UNDER SUCH CONDITIONS. ONCE THE RED FLAG WARNING EXPIRES...BACKGROUND FIRE DANGER DUE TO DRY FUELS WILL REMAIN. HOWEVER...THE WEATHER WILL BE LESS OF AN AGGRAVATING FACTOR. && $$ WAZ651-652-655-659-661-182300- /O.CON.KSEW.FW.A.0001.160819T0700Z-160820T0700Z/ CENTRAL COASTAL LOWLANDS-WEST PORTION OF THE OLYMPIC MOUNTAINS- BLACK HILLS AND SOUTHWEST INTERIOR LOWLANDS- WEST SLOPES OF THE CENTRAL CASCADES GENERALLY ABOVE 1500 FEET- EAST PORTION OF THE OLYMPIC MOUNTAINS- 753 AM PDT THU AUG 18 2016 ...FIRE WEATHER WATCH REMAINS IN EFFECT FROM LATE TONIGHT THROUGH FRIDAY EVENING FOR WIND...LOW HUMIDITY AND INSTABILITY FOR FIRE WEATHER ZONES 651...652...659 AND 661... * AFFECTED AREA...FIRE WEATHER ZONE 651. FIRE WEATHER ZONE 652. FIRE WEATHER ZONE 659. FIRE WEATHER ZONE 661. THIS INCLUDES THE CENTRAL COAST LOWLANDS...WEST AND EAST PORTIONS OF THE OLYMPIC MOUNTAINS...AND THE WEST SLOPES OF THE CENTRAL CASCADES. * WIND...EAST 10 TO 20 MPH...EXCEPT 15 TO 25 MPH ON EXPOSED RIDGES. * HUMIDITY...FALLING TO 10 TO 20 PERCENT LATE TONIGHT AND FRIDAY. * IMPACTS...CRITICAL FIRE WEATHER CONDITIONS ARE FORECAST TO OCCUR STARTING LATE TONIGHT. MONITOR FORECASTS FOR POSSIBLE RED FLAG WARNINGS. PRECAUTIONARY/PREPAREDNESS ACTIONS... A FIRE WEATHER WATCH MEANS THAT CRITICAL FIRE WEATHER CONDITIONS ARE FORECAST TO OCCUR. MONITOR THE FORECASTS FOR POSSIBLE RED FLAG WARNINGS. && $$ ALBRECHT WEATHER.GOV/SEATTLE
037 WWUS86 KSEW 182057 RFWSEW URGENT - FIRE WEATHER MESSAGE NATIONAL WEATHER SERVICE SEATTLE WA 157 PM PDT THU AUG 18 2016 ...A RED FLAG WARNING FOR A COMBINATION OF LOW RELATIVE HUMIDITY...WIND...OR INSTABILITY IS IN EFFECT FOR ALL OF WESTERN WASHINGTON EXCEPT THE IMMEDIATE WASHINGTON COAST ... ...A FIRE WEATHER WATCH IS IN EFFECT FOR THE POTENTIAL OF A COMBINATION OF LOW RELATIVE HUMIDITY AND INSTABILITY FOR LATE FRIDAY NIGHT THROUGH SATURDAY AFTERNOON... .HIGH PRESSURE OVER THE INTERIOR OF CENTRAL BRITISH COLUMBIA WILL GIVE BREEZY NORTH TO NORTHEAST WINDS TODAY. THE WINDS WILL TURN TO THE EAST TONIGHT. THE COMBINATION OF LOW RELATIVE HUMIDITY...WIND...OR INSTABILITY WILL GIVE RED FLAG CONDITIONS TO ALL OF WESTERN WASHINGTON EXCEPT FOR THE IMMEDIATE COASTLINE THROUGH FRIDAY EVENING. THERMAL TROUGHING ALONG THE COAST ON FRIDAY WILL SHIFT INLAND ON SATURDAY ALLOWING WINDS TO DECREASE. BUT IT WILL REMAIN HOT...DRY...AND UNSTABLE THROUGH SATURDAY AFTERNOON. WAZ650-654-656>658-190500- /O.CAN.KSEW.FW.A.0001.160819T0700Z-160820T0700Z/ /O.NEW.KSEW.FW.A.0002.160820T0700Z-160821T0000Z/ /O.EXT.KSEW.FW.W.0001.000000T0000Z-160820T0700Z/ NORTH COASTAL LOWLANDS-CENTRAL AND SOUTH PUGET SOUND LOWLANDS- NORTHEAST PUGET SOUND LOWLANDS GENERALLY BELOW 1500 FEET- SOUTHEAST PUGET SOUND LOWLANDS GENERALLY BELOW 1500 FEET- WEST SLOPES OF THE NORTH CASCADES GENERALLY ABOVE 1500 FEET- 157 PM PDT THU AUG 18 2016 ...RED FLAG WARNING NOW IN EFFECT UNTIL MIDNIGHT PDT FRIDAY NIGHT FOR A COMBINATION OF WIND...LOW RELATIVE HUMIDITY OR INSTABILITY FOR FIRE WEATHER ZONES 650...654...656...657 AND 658... ...FIRE WEATHER WATCH IN EFFECT FROM LATE FRIDAY NIGHT THROUGH SATURDAY AFTERNOON FOR A COMBINATION OF LOW RELATIVE HUMIDITY AND INSTABILITY FOR FIRE WEATHER ZONES 650...654...656...657 AND 658... THE NATIONAL WEATHER SERVICE IN SEATTLE HAS ISSUED A FIRE WEATHER WATCH...WHICH IS IN EFFECT FROM LATE FRIDAY NIGHT THROUGH SATURDAY AFTERNOON. * AFFECTED AREA...FIRE WEATHER ZONE 650. FIRE WEATHER ZONE 654. FIRE WEATHER ZONE 656. FIRE WEATHER ZONE 657. FIRE WEATHER ZONE 658. THIS INCLUDES THE NORTH COASTAL LOWLANDS...THE NORTH AND CENTRAL INTERIOR LOWLANDS ZONES...AND THE WEST SLOPES OF THE NORTH CASCADES. * WIND...NORTHEAST TO NORTH 10 TO 18 MPH. ON EXPOSED RIDGES THE WIND WILL SHIFT TO THE NORTHEAST TO EAST LATE TONIGHT AND FRIDAY AND WILL INCREASE TO 15 TO 25 MPH ON EXPOSED RIDGES. * HUMIDITY...FALLING TO 10 TO 20 PERCENT THIS AFTERNOON...AND AGAIN ON FRIDAY AFTERNOON. HUMIDITY RECOVERIES WILL BE QUITE POOR ABOVE 1500 FEET IN THE MOUNTAINS. * INSTABILITY...THE AIR MASS WILL BECOME INCREASINGLY DRY AND UNSTABLE ALOFT THIS EVENING THROUGH FRIDAY EVENING. * IMPACTS...CRITICAL FIRE WEATHER CONDITIONS ARE EXPECTED THROUGH FRIDAY EVENING AND POSSIBLY INTO SATURDAY AFTERNOON. PRECAUTIONARY/PREPAREDNESS ACTIONS... A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS ARE EITHER OCCURRING NOW...OR WILL SHORTLY. DRY...HOT AND WINDY CONDITIONS CAN CONTRIBUTE TO ACTIVE FIRE BEHAVIOR. INSTABILITY ALOFT CAN ALSO RESULT IN ACTIVE FIRE BEHAVIOR. IN WESTERN WASHINGTON...SIGNIFICANT GROWTH ON EXISTING FIRES HAS HISTORICALLY TAKEN PLACE UNDER SUCH CONDITIONS. ONCE THE RED FLAG WARNING EXPIRES...BACKGROUND FIRE DANGER DUE TO DRY FUELS WILL REMAIN. HOWEVER...THE WEATHER WILL BE LESS OF AN AGGRAVATING FACTOR. A FIRE WEATHER WATCH MEANS THAT CRITICAL FIRE WEATHER CONDITIONS ARE FORECAST TO OCCUR. MONITOR THE FORECASTS FOR POSSIBLE RED FLAG WARNINGS. && $$ WAZ653-190500- /O.CAN.KSEW.FW.A.0001.160819T0700Z-160820T0700Z/ /O.EXT.KSEW.FW.W.0001.000000T0000Z-160820T0700Z/ STRAIT OF JUAN DE FUCA AND NORTHWEST INTERIOR LOWLANDS- 157 PM PDT THU AUG 18 2016 ...RED FLAG WARNING NOW IN EFFECT UNTIL MIDNIGHT PDT FRIDAY NIGHT FOR THE COMBINATION OF WIND...RELATIVE HUMIDITY...OR INSTABILITY FOR FIRE WEATHER ZONE 653... ...FIRE WEATHER WATCH IS CANCELLED FOR FIRE WEATHER ZONE 653... THE NATIONAL WEATHER SERVICE IN SEATTLE HAS CANCELLED THE FIRE WEATHER WATCH. * AFFECTED AREA...FIRE WEATHER ZONE 653. THIS INCLUDES THE NORTHWEST INTERIOR LOWLANDS AND THE AREAS NEAR THE STRAIT OF JUAN DE FUCA. * WIND...NORTHEAST TO NORTH 10 TO 18 MPH. WINDS WILL TURN MORE EASTERLY AND DIMINISH TO 7 TO 10 MPH LATE TONIGHT AND FRIDAY. * HUMIDITY...FALLING TO 10 TO 20 PERCENT THIS AFTERNOON AND AGAIN FRIDAY AFTERNOON. HUMIDITY WILL RECOVER FOR A SHORT WHILE TO 50 TO 70 PERCENT BELOW 1000 FEET LATE TONIGHT...BUT WILL REMAIN BELOW 40 PERCENT ON EXPOSED RIDGES ABOVE 1000 FEET. * INSTABILITY...THE AIR MASS WILL BECOME INCREASINGLY DRY AND UNSTABLE ALOFT THIS EVENING THROUGH FRIDAY EVENING. * IMPACTS...CRITICAL FIRE WEATHER CONDITIONS ARE EXPECTED THROUGH FRIDAY EVENING. PRECAUTIONARY/PREPAREDNESS ACTIONS... A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS ARE EITHER OCCURRING NOW...OR WILL SHORTLY. DRY...HOT AND WINDY CONDITIONS CAN CONTRIBUTE TO ACTIVE FIRE BEHAVIOR. INSTABILITY ALOFT CAN ALSO RESULT IN ACTIVE FIRE BEHAVIOR. IN WESTERN WASHINGTON...SIGNIFICANT GROWTH ON EXISTING FIRES HAS HISTORICALLY TAKEN PLACE UNDER SUCH CONDITIONS. ONCE THE RED FLAG WARNING EXPIRES...BACKGROUND FIRE DANGER DUE TO DRY FUELS WILL REMAIN. HOWEVER...THE WEATHER WILL BE LESS OF AN AGGRAVATING FACTOR. && $$ WAZ651-182200- /O.CAN.KSEW.FW.A.0001.160819T0700Z-160820T0700Z/ CENTRAL COASTAL LOWLANDS- 157 PM PDT THU AUG 18 2016 ...FIRE WEATHER WATCH IS CANCELLED FOR LOW RELATIVE HUMIDITY AND WIND FOR FIRE WEATHER ZONE 651... THE NATIONAL WEATHER SERVICE IN SEATTLE HAS CANCELLED THE FIRE WEATHER WATCH. AN EXTENDED PERIOD OF CRITICAL FIRE WEATHER IN THE CENTRAL COASTAL LOWLANDS IS NO LONGER EXPECTED. $$ WAZ652-655-661-190500- /O.UPG.KSEW.FW.A.0001.160819T0700Z-160820T0700Z/ /O.NEW.KSEW.FW.A.0002.160820T0700Z-160821T0000Z/ /O.EXB.KSEW.FW.W.0001.000000T0000Z-160820T0700Z/ WEST PORTION OF THE OLYMPIC MOUNTAINS- BLACK HILLS AND SOUTHWEST INTERIOR LOWLANDS- EAST PORTION OF THE OLYMPIC MOUNTAINS- 157 PM PDT THU AUG 18 2016 ...RED FLAG WARNING IN EFFECT UNTIL MIDNIGHT PDT FRIDAY NIGHT FOR THE COMBINATION OF WIND...RELATIVE HUMIDITY...OR INSTABILITY FOR FIRE WEATHER ZONES 652...655 AND 661... ...FIRE WEATHER WATCH IN EFFECT FROM LATE FRIDAY NIGHT THROUGH SATURDAY AFTERNOON FOR THE COMBINATION OF LOW RELATIVE HUMIDITY AND INSTABILITY FOR FIRE WEATHER ZONES 652...655 AND 661... THE NATIONAL WEATHER SERVICE IN SEATTLE HAS ISSUED A RED FLAG WARNING...WHICH IS IN EFFECT UNTIL MIDNIGHT PDT FRIDAY NIGHT. A FIRE WEATHER WATCH HAS ALSO BEEN ISSUED. THIS FIRE WEATHER WATCH IS IN EFFECT FROM LATE FRIDAY NIGHT THROUGH SATURDAY AFTERNOON. * AFFECTED AREA...FIRE WEATHER ZONES 652. FIRE WEATHER ZONE 655. FIRE WEATHER ZONE 661. THIS AREA INCLUDES THE OLYMPIC MOUNTAINS AND THE SOUTHWEST INTERIOR LOWLANDS AND BLACK HILLS. * WIND...NORTH TO NORTHEAST WIND 10 TO 20 MPH WILL SHIFT TO EASTERLY OVERNIGHT. WINDS ON EXPOSED RIDGES WILL BE NORTHEAST TO EAST 15 TO 25 MPH. * HUMIDITY...10 TO 20 PERCENT THIS AFTERNOON AND EVENING AND AGAIN FRIDAY AFTERNOON AND EVENING. EXPECT POOR HUMIDITY RECOVERY ABOVE ABOUT 1000 FEET TONIGHT AND FRIDAY MORNING. * INSTABILITY...THE AIR MASS WILL BECOME INCREASINGLY DRY AND UNSTABLE ALOFT THIS EVENING THROUGH FRIDAY EVENING. * IMPACTS...CRITICAL FIRE WEATHER CONDITIONS ARE EXPECTED THROUGH FRIDAY EVENING AND POSSIBLY INTO SATURDAY AFTERNOON. PRECAUTIONARY/PREPAREDNESS ACTIONS... A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS ARE EITHER OCCURRING NOW...OR WILL SHORTLY. DRY...HOT AND WINDY CONDITIONS CAN CONTRIBUTE TO ACTIVE FIRE BEHAVIOR. INSTABILITY ALOFT CAN ALSO RESULT IN ACTIVE FIRE BEHAVIOR. IN WESTERN WASHINGTON...SIGNIFICANT GROWTH ON EXISTING FIRES HAS HISTORICALLY TAKEN PLACE UNDER SUCH CONDITIONS. ONCE THE RED FLAG WARNING EXPIRES...BACKGROUND FIRE DANGER DUE TO DRY FUELS WILL REMAIN. HOWEVER...THE WEATHER WILL BE LESS OF AN AGGRAVATING FACTOR. A FIRE WEATHER WATCH MEANS THAT CRITICAL FIRE WEATHER CONDITIONS ARE FORECAST TO OCCUR. MONITOR THE FORECASTS FOR POSSIBLE RED FLAG WARNINGS. && $$ WAZ659-190500- /O.UPG.KSEW.FW.A.0001.160819T0700Z-160820T0700Z/ /O.NEW.KSEW.FW.A.0002.160820T0700Z-160821T0000Z/ /O.EXB.KSEW.FW.W.0001.160819T0700Z-160820T0700Z/ WEST SLOPES OF THE CENTRAL CASCADES GENERALLY ABOVE 1500 FEET- 157 PM PDT THU AUG 18 2016 ...RED FLAG WARNING IN EFFECT FROM MIDNIGHT TONIGHT TO MIDNIGHT PDT FRIDAY NIGHT FOR A COMBINATION OF WIND...LOW RELATIVE HUMIDITY...OR INSTABILITY FOR FIRE WEATHER ZONE 659... ...FIRE WEATHER WATCH IN EFFECT FROM LATE FRIDAY NIGHT THROUGH SATURDAY AFTERNOON FOR A COMBINATION OF LOW RELATIVE HUMIDITY AND INSTABILITY FOR FIRE WEATHER ZONE 659... THE NATIONAL WEATHER SERVICE IN SEATTLE HAS ISSUED A RED FLAG WARNING...WHICH IS IN EFFECT FROM MIDNIGHT TONIGHT TO MIDNIGHT PDT FRIDAY NIGHT. A FIRE WEATHER WATCH HAS ALSO BEEN ISSUED. THIS FIRE WEATHER WATCH IS IN EFFECT FROM LATE FRIDAY NIGHT THROUGH SATURDAY AFTERNOON. * WIND...EAST 10 TO 20 MPH...EXCEPT 15 TO 25 MPH ON EXPOSED RIDGES. * HUMIDITY...FALLING TO 20 TO 30 PERCENT LATE TONIGHT AND 10 TO 20 PERCENT ON FRIDAY. * INSTABILITY...THE AIR MASS WILL BECOME INCREASINGLY DRY AND UNSTABLE ALOFT TONIGHT THROUGH FRIDAY EVENING. * IMPACTS...CRITICAL FIRE WEATHER CONDITIONS ARE FORECAST TO OCCUR STARTING LATE TONIGHT AND MAY PERSIST INTO SATURDAY AFTERNOON. PRECAUTIONARY/PREPAREDNESS ACTIONS... A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS ARE EITHER OCCURRING NOW...OR WILL SHORTLY. DRY...HOT AND WINDY CONDITIONS CAN CONTRIBUTE TO ACTIVE FIRE BEHAVIOR. INSTABILITY ALOFT CAN ALSO RESULT IN ACTIVE FIRE BEHAVIOR. IN WESTERN WASHINGTON...SIGNIFICANT GROWTH ON EXISTING FIRES HAS HISTORICALLY TAKEN PLACE UNDER SUCH CONDITIONS. ONCE THE RED FLAG WARNING EXPIRES...BACKGROUND FIRE DANGER DUE TO DRY FUELS WILL REMAIN. HOWEVER...THE WEATHER WILL BE LESS OF AN AGGRAVATING FACTOR. A FIRE WEATHER WATCH MEANS THAT CRITICAL FIRE WEATHER CONDITIONS ARE FORECAST TO OCCUR. MONITOR THE FORECASTS FOR POSSIBLE RED FLAG WARNINGS. && $$ ALBRECHT WEATHER.GOV/SEATTLE
621 WWUS86 KSEW 190455 RFWSEW URGENT - FIRE WEATHER MESSAGE NATIONAL WEATHER SERVICE SEATTLE WA 955 PM PDT THU AUG 18 2016 ...A RED FLAG WARNING FOR A COMBINATION OF LOW RELATIVE HUMIDITY...WIND...OR INSTABILITY IS IN EFFECT FOR ALL OF WESTERN WASHINGTON EXCEPT THE IMMEDIATE WASHINGTON COAST ... ...A FIRE WEATHER WATCH IS IN EFFECT FOR THE POTENTIAL OF A COMBINATION OF LOW RELATIVE HUMIDITY AND INSTABILITY FOR LATE FRIDAY NIGHT THROUGH SATURDAY AFTERNOON... .HIGH PRESSURE OVER THE INTERIOR OF CENTRAL BRITISH COLUMBIA SAG SOUTH INTO EASTERN WASHINGTON FRIDAY. THE WINDS WILL TURN TO THE EAST TONIGHT. THE COMBINATION OF LOW RELATIVE HUMIDITY... WIND...OR INSTABILITY WILL GIVE RED FLAG CONDITIONS TO ALL OF WESTERN WASHINGTON EXCEPT FOR THE IMMEDIATE COASTLINE THROUGH FRIDAY EVENING. THERMAL TROUGHING ALONG THE COAST ON FRIDAY WILL SHIFT INLAND ON SATURDAY ALLOWING WINDS TO DECREASE. BUT IT WILL REMAIN HOT...DRY...AND UNSTABLE THROUGH SATURDAY AFTERNOON. WAZ650-652-654>658-661-191600- /O.CON.KSEW.FW.W.0001.000000T0000Z-160820T0700Z/ /O.CON.KSEW.FW.A.0002.160820T0700Z-160821T0000Z/ NORTH COASTAL LOWLANDS-WEST PORTION OF THE OLYMPIC MOUNTAINS- CENTRAL AND SOUTH PUGET SOUND LOWLANDS- BLACK HILLS AND SOUTHWEST INTERIOR LOWLANDS- NORTHEAST PUGET SOUND LOWLANDS GENERALLY BELOW 1500 FEET- SOUTHEAST PUGET SOUND LOWLANDS GENERALLY BELOW 1500 FEET- WEST SLOPES OF THE NORTH CASCADES GENERALLY ABOVE 1500 FEET- EAST PORTION OF THE OLYMPIC MOUNTAINS- 955 PM PDT THU AUG 18 2016 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL MIDNIGHT PDT FRIDAY NIGHT FOR A COMBINATION OF WIND...LOW RELATIVE HUMIDITY OR INSTABILITY FOR FIRE WEATHER ZONES 650...654...656...657 AND 658... ...FIRE WEATHER WATCH REMAINS IN EFFECT FROM LATE FRIDAY NIGHT THROUGH SATURDAY AFTERNOON FOR A COMBINATION OF WIND...LOW RELATIVE HUMIDITY OR INSTABILITY FOR FIRE WEATHER ZONES 650... 654...656...657 AND 658... THE NATIONAL WEATHER SERVICE IN SEATTLE HAS ISSUED A FIRE WEATHER WATCH...WHICH IS IN EFFECT FROM LATE FRIDAY NIGHT THROUGH SATURDAY AFTERNOON. * AFFECTED AREA...FIRE WEATHER ZONE 650. FIRE WEATHER ZONE 654. FIRE WEATHER ZONE 656. FIRE WEATHER ZONE 657. FIRE WEATHER ZONE 658. THIS INCLUDES THE NORTH COASTAL LOWLANDS...THE NORTH AND CENTRAL INTERIOR LOWLANDS ZONES...AND THE WEST SLOPES OF THE NORTH CASCADES. * WIND...NORTHEAST TO NORTH 10 TO 18 MPH. ON EXPOSED RIDGES THE WIND WILL SHIFT TO THE NORTHEAST TO EAST LATE TONIGHT AND FRIDAY AND WILL INCREASE TO 15 TO 25 MPH ON EXPOSED RIDGES. * HUMIDITY...FALLING TO 10 TO 20 PERCENT THIS AFTERNOON...AND AGAIN ON FRIDAY AFTERNOON. HUMIDITY RECOVERIES WILL BE QUITE POOR ABOVE 1500 FEET IN THE MOUNTAINS. * INSTABILITY...THE AIR MASS WILL BECOME INCREASINGLY DRY AND UNSTABLE ALOFT THIS EVENING THROUGH FRIDAY EVENING. * IMPACTS...CRITICAL FIRE WEATHER CONDITIONS ARE EXPECTED THROUGH FRIDAY EVENING AND POSSIBLY INTO SATURDAY AFTERNOON. PRECAUTIONARY/PREPAREDNESS ACTIONS... A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS ARE EITHER OCCURRING NOW...OR WILL SHORTLY. DRY...HOT AND WINDY CONDITIONS CAN CONTRIBUTE TO ACTIVE FIRE BEHAVIOR. INSTABILITY ALOFT CAN ALSO RESULT IN ACTIVE FIRE BEHAVIOR. IN WESTERN WASHINGTON...SIGNIFICANT GROWTH ON EXISTING FIRES HAS HISTORICALLY TAKEN PLACE UNDER SUCH CONDITIONS. ONCE THE RED FLAG WARNING EXPIRES...BACKGROUND FIRE DANGER DUE TO DRY FUELS WILL REMAIN. HOWEVER...THE WEATHER WILL BE LESS OF AN AGGRAVATING FACTOR. A FIRE WEATHER WATCH MEANS THAT CRITICAL FIRE WEATHER CONDITIONS ARE FORECAST TO OCCUR. MONITOR THE FORECASTS FOR POSSIBLE RED FLAG WARNINGS. && $$ WAZ659-191600- /O.CON.KSEW.FW.W.0001.160819T0700Z-160820T0700Z/ /O.CON.KSEW.FW.A.0002.160820T0700Z-160821T0000Z/ WEST SLOPES OF THE CENTRAL CASCADES GENERALLY ABOVE 1500 FEET- 955 PM PDT THU AUG 18 2016 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL MIDNIGHT PDT FRIDAY NIGHT FOR A COMBINATION OF WIND...LOW RELATIVE HUMIDITY...OR INSTABILITY FOR FIRE WEATHER ZONE 659......FIRE WEATHER WATCH IN EFFECT FROM LATE FRIDAY NIGHT THROUGH SATURDAY AFTERNOON FOR A COMBINATION OF LOW RELATIVE HUMIDITY AND INSTABILITY FOR FIRE WEATHER ZONE 659... ...FIRE WEATHER WATCH REMAINS IN EFFECT FROM LATE FRIDAY NIGHT THROUGH SATURDAY AFTERNOON FOR A COMBINATION OF WIND...LOW RELATIVE HUMIDITY...OR INSTABILITY FOR FIRE WEATHER ZONE 659...... FIRE WEATHER WATCH IN EFFECT FROM LATE FRIDAY NIGHT THROUGH SATURDAY AFTERNOON FOR A COMBINATION OF LOW RELATIVE HUMIDITY AND INSTABILITY FOR FIRE WEATHER ZONE 659... * WIND...EAST 10 TO 20 MPH...EXCEPT 15 TO 25 MPH ON EXPOSED RIDGES. * HUMIDITY...FALLING TO 20 TO 30 PERCENT LATE TONIGHT AND 10 TO 20 PERCENT ON FRIDAY. * INSTABILITY...THE AIR MASS WILL BECOME INCREASINGLY DRY AND UNSTABLE ALOFT TONIGHT THROUGH FRIDAY EVENING. * IMPACTS...CRITICAL FIRE WEATHER CONDITIONS ARE FORECAST TO OCCUR STARTING LATE TONIGHT AND MAY PERSIST INTO SATURDAY AFTERNOON. PRECAUTIONARY/PREPAREDNESS ACTIONS... A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS ARE EITHER OCCURRING NOW...OR WILL SHORTLY. DRY...HOT AND WINDY CONDITIONS CAN CONTRIBUTE TO ACTIVE FIRE BEHAVIOR. INSTABILITY ALOFT CAN ALSO RESULT IN ACTIVE FIRE BEHAVIOR. IN WESTERN WASHINGTON...SIGNIFICANT GROWTH ON EXISTING FIRES HAS HISTORICALLY TAKEN PLACE UNDER SUCH CONDITIONS. ONCE THE RED FLAG WARNING EXPIRES...BACKGROUND FIRE DANGER DUE TO DRY FUELS WILL REMAIN. HOWEVER...THE WEATHER WILL BE LESS OF AN AGGRAVATING FACTOR. A FIRE WEATHER WATCH MEANS THAT CRITICAL FIRE WEATHER CONDITIONS ARE FORECAST TO OCCUR. MONITOR THE FORECASTS FOR POSSIBLE RED FLAG WARNINGS. && $$ WAZ653-191600- /O.CON.KSEW.FW.W.0001.000000T0000Z-160820T0700Z/ STRAIT OF JUAN DE FUCA AND NORTHWEST INTERIOR LOWLANDS- 955 PM PDT THU AUG 18 2016 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL MIDNIGHT PDT FRIDAY NIGHT FOR THE COMBINATION OF WIND...RELATIVE HUMIDITY...OR INSTABILITY FOR FIRE WEATHER ZONE 653......FIRE WEATHER WATCH IS CANCELLED FOR FIRE WEATHER ZONE 653... * AFFECTED AREA...FIRE WEATHER ZONE 653. THIS INCLUDES THE NORTHWEST INTERIOR LOWLANDS AND THE AREAS NEAR THE STRAIT OF JUAN DE FUCA. * WIND...NORTHEAST TO NORTH 10 TO 18 MPH. WINDS WILL TURN MORE EASTERLY AND DIMINISH TO 7 TO 10 MPH LATE TONIGHT AND FRIDAY. * HUMIDITY...FALLING TO 10 TO 20 PERCENT THIS AFTERNOON AND AGAIN FRIDAY AFTERNOON. HUMIDITY WILL RECOVER FOR A SHORT WHILE TO 50 TO 70 PERCENT BELOW 1000 FEET LATE TONIGHT...BUT WILL REMAIN BELOW 40 PERCENT ON EXPOSED RIDGES ABOVE 1000 FEET. * INSTABILITY...THE AIR MASS WILL BECOME INCREASINGLY DRY AND UNSTABLE ALOFT THIS EVENING THROUGH FRIDAY EVENING. * IMPACTS...CRITICAL FIRE WEATHER CONDITIONS ARE EXPECTED THROUGH FRIDAY EVENING. PRECAUTIONARY/PREPAREDNESS ACTIONS... A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS ARE EITHER OCCURRING NOW...OR WILL SHORTLY. DRY...HOT AND WINDY CONDITIONS CAN CONTRIBUTE TO ACTIVE FIRE BEHAVIOR. INSTABILITY ALOFT CAN ALSO RESULT IN ACTIVE FIRE BEHAVIOR. IN WESTERN WASHINGTON...SIGNIFICANT GROWTH ON EXISTING FIRES HAS HISTORICALLY TAKEN PLACE UNDER SUCH CONDITIONS. ONCE THE RED FLAG WARNING EXPIRES...BACKGROUND FIRE DANGER DUE TO DRY FUELS WILL REMAIN. HOWEVER...THE WEATHER WILL BE LESS OF AN AGGRAVATING FACTOR. && $$
972 WWUS86 KSEW 191601 RFWSEW URGENT - FIRE WEATHER MESSAGE NATIONAL WEATHER SERVICE SEATTLE WA 901 AM PDT FRI AUG 19 2016 ...A RED FLAG WARNING IS IN EFFECT TODAY AND THIS EVENING FOR A COMBINATION OF LOW RELATIVE HUMIDITY AND A MODERATE BREEZE FOR ALL OF WESTERN WASHINGTON EXCEPT THE IMMEDIATE COAST... ...A RED FLAG WARNING CONTINUES ON SATURDAY OVER THE OLYMPIC MOUNTAINS AS WELL AS THE CENTRAL AND NORTH CASCADES FOR DRY AND UNSTABLE CONDITIONS... .AN EAST AND NORTHEAST WIND EVENT IS UNDERWAY TODAY. WINDS WILL DIMINISH LATER TODAY AND THIS EVENING. A DRY AND UNSTABLE AIR MASS WILL THEN SETTLE OVER THE MOUNTAINS TONIGHT AND SATURDAY...CONTINUING CRITICAL CONDITIONS OVER THE MOUNTAINS ON SATURDAY. WAZ652-658-659-661-200015- /O.CAN.KSEW.FW.A.0002.160820T0700Z-160821T0000Z/ /O.EXT.KSEW.FW.W.0001.000000T0000Z-160821T0500Z/ WEST PORTION OF THE OLYMPIC MOUNTAINS- WEST SLOPES OF THE NORTH CASCADES GENERALLY ABOVE 1500 FEET- WEST SLOPES OF THE CENTRAL CASCADES GENERALLY ABOVE 1500 FEET- EAST PORTION OF THE OLYMPIC MOUNTAINS- 901 AM PDT FRI AUG 19 2016 ...RED FLAG WARNING NOW IN EFFECT UNTIL 10 PM PDT SATURDAY FOR LOW HUMIDITY IN COMBINATION WITH A MODERATE BREEZE TODAY THEN AN UNSTABLE AIR MASS ON SATURDAY... * AFFECTED AREA...FIRE WEATHER ZONES 652...661...658 AND 659. THIS INCLUDES THE OLYMPIC MOUNTAINS ABOVE 1500 FEET AS WELL AS THE WEST SIDE OF THE CASCADES ABOVE 1500 FEET. * HUMIDITY...15 TO 25 PERCENT WILL BE COMMON THIS AFTERNOON AND AGAIN ON SATURDAY AFTERNOON...WITH POOR RELATIVE HUMIDITY RECOVERY TONIGHT. * WIND...NORTHEAST AND EAST WINDS OF 10 TO 20 MPH TODAY...ESPECIALLY OVER THE NORTHWEST PORTION OF THE OLYMPIC PENINSULA AND WEST OF THE MAJOR CASCADE PASSES. WINDS WILL DIMINISH THIS AFTERNOON AND EVENING. * INSTABILITY...THE AIR MASS WILL BECOME MORE UNSTABLE LATER TODAY...WITH UNSTABLE CONDITIONS PERSISTING THROUGH SATURDAY EVENING. MID-LEVEL HAINES 5 AND 6 CONDITIONS ARE EXPECTED TONIGHT THROUGH SATURDAY EVENING. * IMPACTS...CRITICAL FIRE WEATHER CONDITIONS ARE UNDERWAY. WEATHER WILL BE A SIGNIFICANT AGGRAVATING FACTOR ON ANY FIRES THAT GET STARTED. PRECAUTIONARY/PREPAREDNESS ACTIONS... A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS ARE EITHER OCCURRING NOW, OR WILL SHORTLY. A COMBINATION OF A MODERATE BREEZE...LOW RELATIVE HUMIDITY...AND WARM TEMPERATURES CAN CONTRIBUTE TO RAPID RATES OF SPREAD AND DOWNWIND SPOTTING ON EXISTING FIRES. A DRY AND UNSTABLE AIR MASS WITH WARM TEMPERATURES CAN CONTRIBUTE TO ACTIVE FIRE BEHAVIOR. IN WESTERN WASHINGTON, SIGNIFICANT GROWTH ON EXISTING FIRES TAKES PLACE UNDER SUCH CONDITIONS. ONCE THE RED FLAG WARNING EXPIRES...BACKGROUND FIRE DANGER DUE TO DRY FUELS WILL REMAIN. HOWEVER...THE WEATHER WILL BE LESS OF AN AGGRAVATING FACTOR. && $$ WAZ650-654>657-200015- /O.CAN.KSEW.FW.A.0002.160820T0700Z-160821T0000Z/ /O.CON.KSEW.FW.W.0001.000000T0000Z-160820T0700Z/ NORTH COASTAL LOWLANDS-CENTRAL AND SOUTH PUGET SOUND LOWLANDS- BLACK HILLS AND SOUTHWEST INTERIOR LOWLANDS- NORTHEAST PUGET SOUND LOWLANDS GENERALLY BELOW 1500 FEET- SOUTHEAST PUGET SOUND LOWLANDS GENERALLY BELOW 1500 FEET- 901 AM PDT FRI AUG 19 2016 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL MIDNIGHT PDT TONIGHT FOR A COMBINATION OF LOW RELATIVE HUMIDITY AND A MODERATE BREEZE... * AFFECTED AREA...FIRE WEATHER ZONES 650...654...656...AND 657. THIS INCLUDES THE NORTH COASTAL LOWLANDS...THE NORTH AND CENTRAL INTERIOR LOWLANDS ZONES BELOW 1500 FEET. * WIND...NORTHEAST TO EAST WIND 10 TO 18 MPH. * HUMIDITY...RELATIVE HUMIDITY OF 15 TO 25 PERCENT WILL BE COMMON THIS AFTERNOON. * IMPACTS...CRITICAL FIRE WEATHER CONDITIONS ARE UNDERWAY. WEATHER WILL BE A SIGNIFICANT AGGRAVATING FACTOR ON ANY FIRES THAT GET STARTED. PRECAUTIONARY/PREPAREDNESS ACTIONS... A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS ARE EITHER OCCURRING NOW, OR WILL SHORTLY. A COMBINATION OF A MODERATE BREEZE...LOW RELATIVE HUMIDITY...AND WARM TEMPERATURES CAN CONTRIBUTE TO RAPID RATES OF SPREAD AND DOWNWIND SPOTTING ON EXISTING FIRES. THIS IS ESPECIALLY TRUE IN THE TALL DRY GRASS ALONG ROADSIDES. ONCE THE RED FLAG WARNING EXPIRES...BACKGROUND FIRE DANGER DUE TO DRY FUELS WILL REMAIN. HOWEVER...THE WEATHER WILL BE LESS OF AN AGGRAVATING FACTOR. && $$ WAZ662-200015- /O.NEW.KSEW.FW.W.0002.160820T1500Z-160821T0500Z/ EAST PORTION OF NORTH CASCADES NATIONAL PARK/LAKE CHELAN NATIONAL RECREATIONAL AREA- 901 AM PDT FRI AUG 19 2016 ...RED FLAG WARNING IN EFFECT FROM 8 AM TO 10 PM PDT SATURDAY FOR DRY AND UNSTABLE CONDITIONS... THE NATIONAL WEATHER SERVICE IN SEATTLE HAS ISSUED A RED FLAG WARNING...WHICH IS IN EFFECT FROM 8 AM TO 10 PM PDT SATURDAY. * AFFECTED AREA...FIRE WEATHER ZONE 662. THIS IS THE PORTION OF THE NORTH CASCADES NATIONAL PARK COMPLEX EAST OF THE CASCADE CREST...INCLUDING STEHEKIN. * HUMIDITY...RELATIVE HUMIDITY ON SATURDAY WILL DROP BELOW 15 PERCENT. * INSTABILITY...A DEEP COLUMN OF DRY AND UNSTABLE AIR WILL DEVELOP ON SATURDAY. THE MID-LEVEL HAINES INDEX WILL REACH A 6...WHICH INDICATES A DRY AND UNSTABLE AIR MASS CAPABLE OF SUPPORTING LARGE FIRE GROWTH. * IMPACTS...WEATHER WILL BE A SIGNIFICANT AGGRAVATING FACTOR ON ANY FIRES THAT GET STARTED. FIRE DANGER IS ALREADY HIGH TODAY DUE TO DRY FUELS AND LOW HUMIDITY...BUT INSTABILITY WILL BE THE ADDED AGGRAVATING FACTOR ON SATURDAY. PRECAUTIONARY/PREPAREDNESS ACTIONS... A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS ARE EITHER OCCURRING NOW, OR WILL SHORTLY. A DRY AND UNSTABLE AIR MASS WITH WARM TEMPERATURES CAN CONTRIBUTE TO ACTIVE FIRE BEHAVIOR. SIGNIFICANT GROWTH ON EXISTING FIRES TAKES PLACE UNDER SUCH CONDITIONS. && $$ WAZ653-200015- /O.CON.KSEW.FW.W.0001.000000T0000Z-160820T0700Z/ STRAIT OF JUAN DE FUCA AND NORTHWEST INTERIOR LOWLANDS- 901 AM PDT FRI AUG 19 2016 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL MIDNIGHT PDT TONIGHT FOR THE COMBINATION OF LOW RELATIVE HUMIDITY AND A MODERATE BREEZE... * AFFECTED AREA...FIRE WEATHER ZONE 653. THIS INCLUDES THE NORTHWEST INTERIOR LOWLANDS AND THE AREAS NEAR THE STRAIT OF JUAN DE FUCA. * WIND...NORTHEAST 10 TO 18 MPH TODAY...DIMINISHING LATE THIS AFTERNOON AND THIS EVENING. * HUMIDITY...RELATIVE HUMIDITY OF 20 TO 35 PERCENT WILL BE COMMON THIS AFTERNOON. * IMPACTS...CRITICAL FIRE WEATHER CONDITIONS ARE UNDERWAY. WEATHER WILL BE A SIGNIFICANT AGGRAVATING FACTOR ON ANY FIRES THAT GET STARTED. PRECAUTIONARY/PREPAREDNESS ACTIONS... A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS ARE EITHER OCCURRING NOW, OR WILL SHORTLY. A COMBINATION OF A MODERATE BREEZE...LOW RELATIVE HUMIDITY...AND WARM TEMPERATURES CAN CONTRIBUTE TO RAPID RATES OF SPREAD AND DOWNWIND SPOTTING ON EXISTING FIRES. ONCE THE RED FLAG WARNING EXPIRES...BACKGROUND FIRE DANGER DUE TO DRY FUELS WILL REMAIN. HOWEVER...THE WEATHER WILL BE LESS OF AN AGGRAVATING FACTOR. && $$
080 WWUS86 KSEW 192204 RFWSEW URGENT - FIRE WEATHER MESSAGE NATIONAL WEATHER SERVICE SEATTLE WA 304 PM PDT FRI AUG 19 2016 ...A RED FLAG WARNING IS IN EFFECT FOR FIRE WEATHER ZONES 650...654...655 AND 657 UNTIL 10 PM PDT THIS EVENING FOR LOW RELATIVE HUMIDITY AND A MODERATE BREEZE... ...RED FLAG WARNING IN EFFECT UNTIL SATURDAY EVENING OVER THE OLYMPIC MOUNTAINS AS WELL AS THE CENTRAL AND NORTH CASCADES FOR DRY AND UNSTABLE CONDITIONS... .A THERMAL PRESSURE TROUGH WAS LOCATED NEAR THE COAST ON FRIDAY AFTERNOON. THIS FEATURE WILL MIGRATE EASTWARD ACROSS WESTERN WASHINGTON ON SATURDAY. ON ONE HAND...THIS WILL BRING LIGHTER WINDS. HOWEVER...THIS FEATURE WILL BE ACCOMPANIED BY AN EXTREMELY DRY AND UNSTABLE AIR MASS ABOVE 3000 FEET. WAZ653-656-192315- /O.CAN.KSEW.FW.W.0001.000000T0000Z-160820T0700Z/ STRAIT OF JUAN DE FUCA AND NORTHWEST INTERIOR LOWLANDS- NORTHEAST PUGET SOUND LOWLANDS GENERALLY BELOW 1500 FEET- 304 PM PDT FRI AUG 19 2016 ...RED FLAG WARNING IS CANCELLED FOR A COMBINATION OF LOW RELATIVE HUMIDITY AND A MODERATE BREEZE... THE NATIONAL WEATHER SERVICE IN SEATTLE HAS CANCELLED THE RED FLAG WARNING. DRY NORTHEASTERLY FRASER OUTFLOW WINDS HAVE ENDED, AND WIND SPEEDS ARE GENERALLY BELOW 10 MPH. INSTEAD...SEABREEZES HAVE DEVELOPED THIS AFTERNOON OVER THE INTERIOR OF NORTHWEST WASHINGTON...WHICH WILL BRING RISING HUMIDITY FOR THE REST OF THIS AFTERNOON. ALTHOUGH THE RED FLAG WARNING HAS ENDED...BACKGROUND FIRE DANGER DUE TO DRY FUELS WILL REMAIN FOR THE FORESEEABLE FUTURE. IN ADDITION...NEAR-RECORD HIGH TEMPERATURES WILL CONTRIBUTE TO ELEVATED FIRE DANGER FOR THE REST OF THIS AFTERNOON. $$ WAZ650-654-655-657-200500- /O.EXT.KSEW.FW.W.0001.000000T0000Z-160820T0500Z/ NORTH COASTAL LOWLANDS-CENTRAL AND SOUTH PUGET SOUND LOWLANDS- BLACK HILLS AND SOUTHWEST INTERIOR LOWLANDS- SOUTHEAST PUGET SOUND LOWLANDS GENERALLY BELOW 1500 FEET- 304 PM PDT FRI AUG 19 2016 ...RED FLAG WARNING NOW IN EFFECT UNTIL 10 PM PDT THIS EVENING FOR A COMBINATION OF LOW RELATIVE HUMIDITY AND A MODERATE BREEZE... * AFFECTED AREA...FIRE WEATHER ZONES 650...654...655...AND 657. THIS INCLUDES THE NORTH COASTAL LOWLANDS...AND THE CENTRAL AND SOUTHWEST INTERIOR LOWLANDS BELOW 1500 FEET. THIS INCLUDES THE KITSAP PENINSULA...THE I-5 CORRIDOR FROM SEATTLE ON SOUTH...AND THE NORTHWEST OLYMPIC PENINSULA. * WIND...NORTHEAST TO NORTHEAST WIND 8 TO 15 MPH. * HUMIDITY...RELATIVE HUMIDITY OF 15 TO 30 PERCENT. * IMPACTS...CRITICAL FIRE WEATHER CONDITIONS ARE UNDERWAY. WEATHER WILL BE A SIGNIFICANT AGGRAVATING FACTOR ON ANY FIRES THAT GET STARTED DUE TO THE EFFECTS OF HOT TEMPERATURES...LOW RELATIVE HUMIDITY AND MODERATE BREEZES. PRECAUTIONARY/PREPAREDNESS ACTIONS... A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS ARE EITHER OCCURRING NOW... OR WILL SHORTLY. A COMBINATION OF A MODERATE BREEZE...LOW RELATIVE HUMIDITY...AND WARM TEMPERATURES CAN CONTRIBUTE TO RAPID RATES OF SPREAD AND DOWNWIND SPOTTING ON EXISTING FIRES. THIS IS ESPECIALLY TRUE IN THE TALL DRY GRASS ALONG ROADSIDES. ONCE THE RED FLAG WARNING EXPIRES LATE THIS EVENING...BACKGROUND FIRE DANGER DUE TO DRY FUELS WILL REMAIN. HOWEVER...THE WEATHER WILL BE LESS OF AN AGGRAVATING FACTOR. && $$ WAZ652-658-659-661-201615- /O.CON.KSEW.FW.W.0001.000000T0000Z-160821T0500Z/ WEST PORTION OF THE OLYMPIC MOUNTAINS- WEST SLOPES OF THE NORTH CASCADES GENERALLY ABOVE 1500 FEET- WEST SLOPES OF THE CENTRAL CASCADES GENERALLY ABOVE 1500 FEET- EAST PORTION OF THE OLYMPIC MOUNTAINS- 304 PM PDT FRI AUG 19 2016 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 10 PM PDT SATURDAY FOR A DRY AND UNSTABLE AIR MASS... * AFFECTED AREA...FIRE WEATHER ZONES 652...661...658 AND 659. THIS INCLUDES THE OLYMPIC MOUNTAINS ABOVE 1500 FEET AS WELL AS THE WEST SIDE OF THE CASCADES ABOVE 1500 FEET. * HUMIDITY...15 TO 25 PERCENT WILL BE COMMON THIS AFTERNOON AND AGAIN ON SATURDAY AFTERNOON...WITH POOR RELATIVE HUMIDITY RECOVERY TONIGHT. * WIND...EAST WINDS HAVE MOSTLY DIMINISHED BELOW 10 MPH...AND SPEEDS WILL CONTINUE TO DIMINISH THIS EVENING. * INSTABILITY...THE AIR MASS WILL BE UNSTABLE THROUGH SATURDAY EVENING. MID-LEVEL HAINES 5 AND 6 CONDITIONS ARE EXPECTED TONIGHT THROUGH SATURDAY EVENING. * IMPACTS...CRITICAL FIRE WEATHER CONDITIONS ARE UNDERWAY. WEATHER WILL BE A SIGNIFICANT AGGRAVATING FACTOR ON ANY FIRES THAT GET STARTED. PRECAUTIONARY/PREPAREDNESS ACTIONS... A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS ARE EITHER OCCURRING NOW... OR WILL SHORTLY. A DRY AND UNSTABLE AIR MASS WITH WARM TEMPERATURES CAN CONTRIBUTE TO ACTIVE FIRE BEHAVIOR. IN WESTERN WASHINGTON... SIGNIFICANT GROWTH ON EXISTING FIRES TAKES PLACE UNDER SUCH CONDITIONS. ONCE THE RED FLAG WARNING EXPIRES...BACKGROUND FIRE DANGER DUE TO DRY FUELS WILL REMAIN. HOWEVER...THE WEATHER WILL BE LESS OF AN AGGRAVATING FACTOR. && $$ WAZ662-201615- /O.CON.KSEW.FW.W.0002.160820T1500Z-160821T0500Z/ EAST PORTION OF NORTH CASCADES NATIONAL PARK/LAKE CHELAN NATIONAL RECREATIONAL AREA- 304 PM PDT FRI AUG 19 2016 ...RED FLAG WARNING REMAINS IN EFFECT FROM 8 AM TO 10 PM PDT SATURDAY FOR DRY AND UNSTABLE CONDITIONS... * AFFECTED AREA...FIRE WEATHER ZONE 662. THIS IS THE PORTION OF THE NORTH CASCADES NATIONAL PARK COMPLEX EAST OF THE CASCADE CREST...INCLUDING STEHEKIN. * HUMIDITY...RELATIVE HUMIDITY ON SATURDAY WILL DROP BELOW 15 PERCENT. * INSTABILITY...A DEEP COLUMN OF DRY AND UNSTABLE AIR WILL DEVELOP ON SATURDAY. THE MID-LEVEL HAINES INDEX WILL REACH A 6...WHICH INDICATES A DRY AND UNSTABLE AIR MASS CAPABLE OF SUPPORTING LARGE FIRE GROWTH. * IMPACTS...WEATHER WILL BE A SIGNIFICANT AGGRAVATING FACTOR ON ANY FIRES THAT GET STARTED. FIRE DANGER IS ALREADY HIGH TODAY DUE TO DRY FUELS AND LOW HUMIDITY...BUT INSTABILITY WILL BE THE ADDED AGGRAVATING FACTOR ON SATURDAY. PRECAUTIONARY/PREPAREDNESS ACTIONS... A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS ARE EITHER OCCURRING NOW... OR WILL SHORTLY. A DRY AND UNSTABLE AIR MASS WITH WARM TEMPERATURES CAN CONTRIBUTE TO ACTIVE FIRE BEHAVIOR. SIGNIFICANT GROWTH ON EXISTING FIRES TAKES PLACE UNDER SUCH CONDITIONS. && $$
101 WWUS86 KSEW 201510 RFWSEW URGENT - FIRE WEATHER MESSAGE NATIONAL WEATHER SERVICE SEATTLE WA 810 AM PDT SAT AUG 20 2016 ...A RED FLAG WARNING IS IN EFFECT FOR FIRE WEATHER ZONES 650... 654...655 AND 657 UNTIL 10 PM PDT THIS EVENING FOR LOW RELATIVE HUMIDITY AND A MODERATE BREEZE... ...RED FLAG WARNING IN EFFECT THROUGH THIS EVENING OVER THE OLYMPIC MOUNTAINS AS WELL AS THE CENTRAL AND NORTH CASCADES FOR DRY AND UNSTABLE CONDITIONS... .A THERMAL PRESSURE TROUGH WAS ALONG COAST THIS MORNING AND IS EXPECTED TO SHIFT EASTWARD ACROSS WESTERN WASHINGTON THROUGH TODAY. THIS FEATURE IS ACCOMPANIED BY AN EXTREMELY DRY AND UNSTABLE AIR MASS ABOVE 2000 FEET. WAZ652-658-659-661-202315- /O.CON.KSEW.FW.W.0001.000000T0000Z-160821T0500Z/ WEST PORTION OF THE OLYMPIC MOUNTAINS- WEST SLOPES OF THE NORTH CASCADES GENERALLY ABOVE 1500 FEET- WEST SLOPES OF THE CENTRAL CASCADES GENERALLY ABOVE 1500 FEET- EAST PORTION OF THE OLYMPIC MOUNTAINS- 810 AM PDT SAT AUG 20 2016 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 10 PM PDT THIS EVENING FOR A DRY AND UNSTABLE AIR MASS... * AFFECTED AREA...FIRE WEATHER ZONES 652...661...658 AND 659. THIS INCLUDES THE OLYMPIC MOUNTAINS ABOVE 1500 FEET AS WELL AS THE WEST SIDE OF THE CASCADES ABOVE 1500 FEET. * HUMIDITY...15 TO 25 PERCENT WILL BE COMMON THIS AFTERNOON INTO THIS EVENING. * INSTABILITY...THE AIR MASS WILL BE UNSTABLE THROUGH THIS EVENING. MID-LEVEL HAINES 5 AND 6 CONDITIONS ARE EXPECTED. * IMPACTS...CRITICAL FIRE WEATHER CONDITIONS CONTINUE. WEATHER WILL BE A SIGNIFICANT AGGRAVATING FACTOR ON ANY FIRES THAT GET STARTED. PRECAUTIONARY/PREPAREDNESS ACTIONS... A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS ARE EITHER OCCURRING NOW... OR WILL SHORTLY. A DRY AND UNSTABLE AIR MASS WITH WARM TEMPERATURES CAN CONTRIBUTE TO ACTIVE FIRE BEHAVIOR. IN WESTERN WASHINGTON... SIGNIFICANT GROWTH ON EXISTING FIRES TAKES PLACE UNDER SUCH CONDITIONS. ONCE THE RED FLAG WARNING EXPIRES...BACKGROUND FIRE DANGER DUE TO DRY FUELS WILL REMAIN. HOWEVER...THE WEATHER WILL BE LESS OF AN AGGRAVATING FACTOR. && $$ WAZ662-202315- /O.CON.KSEW.FW.W.0002.000000T0000Z-160821T0500Z/ EAST PORTION OF NORTH CASCADES NATIONAL PARK/LAKE CHELAN NATIONAL RECREATIONAL AREA- 810 AM PDT SAT AUG 20 2016 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 10 PM PDT THIS EVENING FOR DRY AND UNSTABLE CONDITIONS... * AFFECTED AREA...FIRE WEATHER ZONE 662. THIS IS THE PORTION OF THE NORTH CASCADES NATIONAL PARK COMPLEX EAST OF THE CASCADE CREST...INCLUDING STEHEKIN. * HUMIDITY...RELATIVE HUMIDITY TODAY WILL DROP BELOW 15 PERCENT. * INSTABILITY...A DEEP COLUMN OF DRY AND UNSTABLE AIR WILL DEVELOP TODAY. THE MID-LEVEL HAINES INDEX WILL REACH A 6...WHICH INDICATES A DRY AND UNSTABLE AIR MASS CAPABLE OF SUPPORTING LARGE FIRE GROWTH. * IMPACTS...WEATHER WILL BE A SIGNIFICANT AGGRAVATING FACTOR ON ANY FIRES THAT GET STARTED. FIRE DANGER IS HIGH TODAY DUE TO DRY FUELS AND LOW HUMIDITY...BUT INSTABILITY WILL ADD AN AGGRAVATING FACTOR TODAY. PRECAUTIONARY/PREPAREDNESS ACTIONS... A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS ARE EITHER OCCURRING NOW... OR WILL SHORTLY. A DRY AND UNSTABLE AIR MASS WITH WARM TEMPERATURES CAN CONTRIBUTE TO ACTIVE FIRE BEHAVIOR. SIGNIFICANT GROWTH ON EXISTING FIRES TAKES PLACE UNDER SUCH CONDITIONS. && $$ WWW.WEATHER.GOV/ BUEHNER
043 WWUS86 KSEW 202140 RFWSEW URGENT - FIRE WEATHER MESSAGE NATIONAL WEATHER SERVICE SEATTLE WA 240 PM PDT SAT AUG 20 2016 ...A RED FLAG WARNING REMAINS IN EFFECT FOR FIRE WEATHER ZONES 652...658...659 AND 661 UNTIL 10 PM PDT THIS EVENING FOR LOW RELATIVE HUMIDITY AND A MID-LEVEL UNSTABLE AIR MASS... .A THERMAL SURFACE PRESSURE TROUGH IN THE WESTERN INTERIOR THIS AFTERNOON IS EXPECTED TO SHIFT EAST OF THE CASCADES TONIGHT. THIS FEATURE IS ACCOMPANIED BY AN EXTREMELY DRY AND UNSTABLE AIR MASS ABOVE 2000 FEET. LOW LEVEL ONSHORE FLOW WITH A MUCH COOLER AIR MASS WILL SURGE ONSHORE AND INTO THE INTERIOR THROUGH THE NIGHT. WAZ652-658-659-661-210500- /O.CON.KSEW.FW.W.0001.000000T0000Z-160821T0500Z/ WEST PORTION OF THE OLYMPIC MOUNTAINS- WEST SLOPES OF THE NORTH CASCADES GENERALLY ABOVE 1500 FEET- WEST SLOPES OF THE CENTRAL CASCADES GENERALLY ABOVE 1500 FEET- EAST PORTION OF THE OLYMPIC MOUNTAINS- 240 PM PDT SAT AUG 20 2016 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 10 PM PDT THIS EVENING FOR A DRY AND UNSTABLE AIR MASS... * AFFECTED AREA...FIRE WEATHER ZONES 652...661...658 AND 659. THIS INCLUDES THE OLYMPIC MOUNTAINS ABOVE 1500 FEET AS WELL AS THE WEST SIDE OF THE CASCADES ABOVE 1500 FEET. * HUMIDITY...15 TO 25 PERCENT WILL BE COMMON INTO THIS EVENING. * INSTABILITY...THE AIR MASS WILL BE UNSTABLE THROUGH THIS EVENING. MID-LEVEL HAINES 5 AND 6 CONDITIONS EXPECTED. * IMPACTS...CRITICAL FIRE WEATHER CONDITIONS CONTINUE. WEATHER WILL BE A SIGNIFICANT AGGRAVATING FACTOR ON ANY FIRES THAT GET STARTED. PRECAUTIONARY/PREPAREDNESS ACTIONS... A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS ARE IN PLACE. A DRY AND UNSTABLE AIR MASS WITH WARM TEMPERATURES CAN CONTRIBUTE TO ACTIVE FIRE BEHAVIOR. IN WESTERN WASHINGTON... SIGNIFICANT GROWTH ON EXISTING FIRES TAKES PLACE UNDER SUCH CONDITIONS. ONCE THE RED FLAG WARNING EXPIRES TONIGHT...BACKGROUND FIRE DANGER DUE TO DRY FUELS WILL REMAIN. HOWEVER...THE WEATHER WILL BE LESS OF AN AGGRAVATING FACTOR. && $$ WAZ662-210500- /O.CON.KSEW.FW.W.0002.000000T0000Z-160821T0500Z/ EAST PORTION OF NORTH CASCADES NATIONAL PARK/LAKE CHELAN NATIONAL RECREATIONAL AREA- 240 PM PDT SAT AUG 20 2016 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 10 PM PDT THIS EVENING FOR DRY AND UNSTABLE CONDITIONS... * AFFECTED AREA...FIRE WEATHER ZONE 662. THIS IS THE PORTION OF THE NORTH CASCADES NATIONAL PARK COMPLEX EAST OF THE CASCADE CREST...INCLUDING STEHEKIN. * HUMIDITY...LOW RELATIVE HUMIDITIES BETWEEN 10 AND 20 PERCENT. * INSTABILITY...A DEEP COLUMN OF DRY AND UNSTABLE AIR. THE MID- LEVEL HAINES INDEX OF 6 INDICATING A DRY AND UNSTABLE AIR MASS CAPABLE OF SUPPORTING LARGE FIRE GROWTH. * IMPACTS...WEATHER WILL BE A SIGNIFICANT AGGRAVATING FACTOR ON ANY FIRES THAT GET STARTED. FIRE DANGER IS HIGH TODAY DUE TO DRY FUELS AND LOW HUMIDITY...BUT INSTABILITY WILL ADD AN AGGRAVATING FACTOR THROUGH THIS EVENING. PRECAUTIONARY/PREPAREDNESS ACTIONS... A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS ARE EITHER OCCURRING NOW... OR WILL SHORTLY. A DRY AND UNSTABLE AIR MASS WITH WARM TEMPERATURES CAN CONTRIBUTE TO ACTIVE FIRE BEHAVIOR. SIGNIFICANT GROWTH ON EXISTING FIRES TAKES PLACE UNDER SUCH CONDITIONS. && $$
What forecasters said that day
The local office's own words before this red flag warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Seattle, WA wrote its last area forecast discussion before this red flag warning went out at Aug 17, 9:26 AM PDT, 5 hours 11 minutes earlier.
Area forecast discussion, Aug 17, 9:26 AM PDT, 5 hours 11 minutes before
Area Forecast Discussion
National Weather Service Seattle WA
926 AM PDT WED AUG 17 2016
.SYNOPSIS...High pressure aloft and low level offshore flow will
bring and extended period of very warm weather later this week. An
upper trough and onshore will cool things off early next week.
&&
.SHORT TERM...An upper ridge over the Northeast Pacific will give
dry weather to Western Washington through Friday. For today, low
clouds and fog over the southwest interior and down the Strait of
Juan De Fuca will burn back to the coast by afternoon. Otherwise,
it will be sunny. Weak low level onshore flow will continue with
highs a few degrees above normal.
Low level flow will switch to offshore tonight and Thursday as a
thermal trough develops along the coast. This will cause high
temperatures to rise several degrees Thursday with mid 80s to
lower 90s common, even at the coast. The same general pattern will
continue on Friday - the thermal trough will remain near the
coast resulting in another hot day for all areas.
An excessive heat watch is currently in effect for the coast and
interior from Everett south Thursday afternoon through Saturday.
This will likely be converted to either a heat advisory or
excessive heat warning with the afternoon forecast package
depending on how warm the latest guidance looks. Schneider
.LONG TERM...Previous discussion...A weakening upper level ridge
will remain over the region on Saturday for another warm day
across the interior. Weak low level onshore flow will return
Saturday afternoon, providing the coast with relief from the heat.
Temperatures on the coast will likely peak early in the afternoon
before falling.
Beyond Saturday, the operational medium range solutions were quite
a bit different from the earlier runs. The models now indicated a
trough over the Pacific Northwest on Sunday. This would result in
temperatures being cooler than forecast. In other words, the
models were faster with breaking down the ridge. For now,
decided to hold off on making wholesale changes to the forecast.
Would rather wait to see if this idea persists.
It looks like western WA will lie between an upper level ridge
centered offshore and a mean upper level trough over the Rockies
Monday and Tuesday. Heights/thicknesses will still be rather high
but onshore flow should keep temps close to climatology.
&&
.AVIATION...A high pressure ridge will strengthen over Washington
the next couple days. Light northerly flow aloft becoming
northeasterly thursday. Dry and stable conditions will remain in
place over Western Washington...except residual near surface marine
moisture this morning coast...strait...and the sw interior/s Puget
Sound. This low stratus pattern is not expected to develop again
Thursday morning as the low level flow turns more northerly or
offshore keeping any coastal stratus at bay.
KSEA...Few-Sct clouds near 500 ft through 10 am pdt. Otherwise VFR
conditions remain in place with west-northwest wind 5-9
kt...becoming north 10-13 kt after 20z. Stronger surface north winds
are expected by Thursday afternoon. dtm
&&
.MARINE...High pressure over the NE Pacific will maintain
light onshore flow across Western WA. Diurnal northwesterly
afternoon winds continue again today, strongest over the outer part
of the coastal waters where a small craft advisory remains in
effect through at least tonight.
The flow will turn northerly on Thursday then offshore Friday and
Saturday as low pressure forms along the coast. dtm
&&
.FIRE WEATHER...Red flag conditions are likely over the interior
lowlands and the west slopes of the northern Cascades on Thursday.
Red flag conditions will likely spread into the west slopes of the
central Cascades, the Olympics, and the coastal lowlands late
Thursday night into Friday. Fire weather watches have been issued
for most of Western Washington to cover this event.
Light to moderate onshore flow will continue today, so a
continuation seasonably warm weather that has been occurring for
the past several days.
A rather major change in the pattern will begin early Thursday
morning as surface high pressure develops over the interior of
central British Columbia. Forecast models continue to show warm
and dry continental air from the British Columbia interior moving
southwest into the Bellingham area in a Fraser outflow pattern as
Bellingham-Williams Lake pressure gradients fall to around -8 mb.
The air will compress and warm as it moves into the area
resulting in dewpoint temperatures falling into the 30s and 40s on
Thursday. Temperatures just away from the Sound will rise to the
80s to mid 90s giving relative humidity values 10-20 percent
during the afternoon and early evening hours. 20 foot winds will
rise to north 10-20 mph in several locations in the interior and
in the northern Cascades.
Later Thursday night into Friday winds will veer to easterly
between 2000 and 5000 feet and will increase. This will result in
Red Flag conditions developing Friday morning in the Olympics,
portions of the coastal zones, and in the central portions of the
Cascades. It will remain rather windy in the lowlands with
north to northeast flow and relative humidity values will once
again fall to 10-20 percent.
Fire weather watches are now in effect for most western Washington
zones Thursday through Friday night.
Thermal low pressure will remain over the area on Saturday and
temperatures will remain warm. Temperatures aloft will cool some
which will increase instability. Red flag conditions for
instability and dry air aloft may occur in the mountains for the
first part of the weekend.
Conditions will begin to moderate Saturday night and Sunday as
temperatures gradually cool and relative humidity increases.
Albrecht/Bower
&&
.SEW Watches/Warnings/Advisories...
WA...Fire Weather Watch from Thursday morning through Friday evening
for Black Hills and Southwest Interior Lowlands-Central and
South Puget Sound Lowlands-Northeast Puget Sound Lowlands
Generally Below 1500 Feet-Southeast Puget Sound Lowlands
Generally Below 1500 Feet-Strait of Juan De Fuca and
Northwest Interior Lowlands-West Slopes of the North
Cascades Generally above 1500 Feet.
Excessive Heat Watch from Thursday afternoon through Saturday
evening for Bellevue and Vicinity-Bremerton and Vicinity-
East Puget Sound Lowlands-Everett and Vicinity-Hood Canal
Area-Lower Chehalis Valley Area-Seattle and Vicinity-
Southwest Interior-Tacoma Area.
Fire Weather Watch from late Thursday night through Friday
evening for Central Coastal Lowlands-East Portion of the
Olympic Mountains-West Portion of the Olympic Mountains-
West Slopes of the Central Cascades Generally above 1500
Feet.
Fire Weather Watch from Thursday morning through Friday evening
for North Coastal Lowlands.
Excessive Heat Watch from Thursday afternoon through Friday
evening for Central Coast-North Coast.
PZ...Small Craft Advisory until 5 AM PDT Thursday for Coastal Waters
From Cape Flattery To James Island 10 To 60 Nm-Coastal
Waters From James Island To Point Grenville 10 To 60 Nm-
Coastal Waters From Point Grenville To Cape Shoalwater 10
To 60 Nm.
&&
www.weather.gov/seattle
You can see an illustrated version of this discussion at
www.weather.gov/seattle/gafd/latest_webafd.htmlThe office that day
Everything else NWS Seattle, WA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 16, 9:07 PM PDT | Gale Warning | SEW | 5 hr | |
| Aug 16, 9:07 PM PDT | Small Craft Advisory | SEW | 8 hr | |
| Aug 17, 2:23 PM PDT | Excessive Heat Warning | SEW | 3 days | |
| Aug 17, 2:23 PM PDT | Heat Advisory | SEW | 3 days | |
| Aug 17, 4:02 PM PDT | Small Craft Advisory | SEW | 7 hr |
Nearby
Red Flag Warnings in Washington, 2016Every red flag warning in 2016
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.