Alert archive / Washington / Red Flag Warnings in 2011

Red Flag Warning 4, NWS Spokane, WA

September 12, 2011

NWS Spokane, WA issued this red flag warning at Sep 12, 2011, 1:37 PM PDT. It was in force for 5 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
Sep 12, 2011, 1:37 PM PDT (20:37 UTC)
Expired
Sep 12, 2011, 7:00 PM PDT
In force
5 hr
Issued by
NWS Spokane, WA

The text

As transmitted, in the capitals the NWS used until 2016.

326 
WWUS86 KOTX 122037
RFWOTX

URGENT - FIRE WEATHER MESSAGE
NATIONAL WEATHER SERVICE SPOKANE WA
137 PM PDT MON SEP 12 2011

...RED FLAG WARNING FOR THE KITTITAS VALLEY FOR GUSTY WINDS AND
LOW RELATIVE HUMIDITY...

.GUSTY NORTHWEST WINDS COMBINED WITH CRITICALLY LOW RELATIVE
HUMIDITY WILL COMBINE TO HEIGHTEN THE POTENTIAL FOR DANGEROUS FIRE
WEATHER CONDITIONS THIS AFTERNOON. A PRESSURE GRADIENT ACROSS THE
CASCADES WILL CAUSE NORTHWEST WINDS OF 15 MPH WITH GUSTS TO 25 MPH
THIS AFTERNOON. THE HOT CONDITIONS AND LOW RELATIVE HUMIDITY
LEVELS WILL HEIGHTEN THE POTENTIAL FOR THE RAPID SPREAD OF ANY
FIRES THAT IGNITE THIS AFTERNOON.

WAZ676-130200-
/O.NEW.KOTX.FW.W.0004.110912T2037Z-110913T0200Z/
EAST WASHINGTON SOUTH CENTRAL CASCADE VALLEYS (ZONE 676)-
137 PM PDT MON SEP 12 2011

...RED FLAG WARNING IN EFFECT UNTIL 7 PM PDT THIS EVENING 
FOR WINDS AND CRITICALLY LOW RELATIVE HUMIDITY FOR FIRE 
WEATHER ZONE 676...

THE NATIONAL WEATHER SERVICE IN SPOKANE HAS ISSUED A RED FLAG
WARNING...WHICH IS IN EFFECT UNTIL 7 PM PDT THIS EVENING. 

* AFFECTED AREA...FIRE WEATHER ZONE 676...INCLUDING THE CITY OF
  ELLENSBURG.

* WIND...NORTHWEST WINDS SUSTAINED AT 15 MPH WITH GUSTS OF 
         25 MPH. 

* HUMIDITY...RELATIVE HUMIDITY LEVELS OF 15 TO 20 PERCENT.

* IMPACTS...ANY FIRES THAT DEVELOP WILL LIKELY SPREAD RAPIDLY. 
  OUTDOOR BURNING IS NOT RECOMMENDED.

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 WILL
CREATE EXPLOSIVE FIRE GROWTH POTENTIAL. 

&&

$$
1 follow-up statement
759 
WWUS86 KOTX 130154
RFWOTX

URGENT - FIRE WEATHER MESSAGE
NATIONAL WEATHER SERVICE SPOKANE WA
654 PM PDT MON SEP 12 2011

WAZ676-130300-
/O.EXP.KOTX.FW.W.0004.000000T0000Z-110913T0200Z/
EAST WASHINGTON SOUTH CENTRAL CASCADE VALLEYS (ZONE 676)-
INCLUDING THE FOLLOWING LOCATIONS...NACHES RIVER VALLEY
654 PM PDT MON SEP 12 2011

...RED FLAG WARNING WILL EXPIRE AT 7 PM PDT THIS EVENING FOR
WINDS AND CRITICALLY LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONE
676...

THE RED FLAG WARNING WILL EXPIRE AT 7 PM PDT THIS EVENING. 

RELATIVE HUMIDITY IS EXPECTED TO INCREASE AS TEMPERATURES COOL
THIS EVENING. SURFACE WINDS WILL ALSO DECREASE BUT LATER IN THE 
EVENING. THEREFORE THE RED FLAG WARNING WILL BE ALLOWED TO 
EXPIRE AT 7 PM WITH THE IDEA THAT THE EXPECTED HUMIDITY INCREASE
AND DECREASE IN SURFACE WINDS WILL NOT MERIT ITS FURTHER
CONTINUATION.  

$$

HTTP://WEATHER.GOV/SPOKANE

Nearby

Red Flag Warnings in Washington, 2011Every red flag warning in 2011

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text.