Alert archive / Alaska / Red Flag Warnings in 2011

Red Flag Warning 15, NWS Anchorage, AK

July 23, 2011

NWS Anchorage, AK issued this red flag warning at Jul 23, 2011, 6:33 AM AKDT. It took effect at Jul 23, 2011, 2:00 PM AKDT. It was in force for 6 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
Jul 23, 2011, 6:33 AM AKDT (14:33 UTC)
In effect from
Jul 23, 2011, 2:00 PM AKDT
Expired
Jul 23, 2011, 8:18 PM AKDT
In force
6 hr
Issued by
NWS Anchorage, AK

The text

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

599 
WWAK61 PAFC 231433
RFWAER

URGENT - FIRE WEATHER MESSAGE
NATIONAL WEATHER SERVICE ANCHORAGE AK
633 AM AKDT SAT JUL 23 2011

A SURFACE RIDGE WILL BUILD OVER SOUTHCENTRAL AHEAD OF A FRONT
MOVING OUT OF THE BERING SEA. THE TIGHTER PRESSURE GRADIENT WILL
LIKELY GENERATE STRONG WINDS ALONG THE COPPER RIVER AND COMBINE
WITH RELATIVE HUMIDITIES LESS THAN 30 PERCENT TO PRODUCE RED FLAG
CONDITIONS.

AKZ141-240600-
/X.UPG.PAFC.FW.A.0004.110723T2200Z-110724T0400Z/
/X.NEW.PAFC.FW.W.0015.110723T2200Z-110724T0600Z/
COPPER RIVER BASIN-
633 AM AKDT SAT JUL 23 2011

...RED FLAG WARNING FOR STRONG WINDS IN EFFECT FROM 2 PM THIS
AFTERNOON TO 10 PM AKDT THIS EVENING FOR STRONG WIND FOR THE
COPPER RIVER...

THE NATIONAL WEATHER SERVICE IN ANCHORAGE HAS ISSUED A RED FLAG
WARNING FOR STRONG WINDS...WHICH IS IN EFFECT FROM 2 PM THIS AFTERNOON
TO 10 PM AKDT THIS EVENING FOR ALONG THE COPPER RIVER. THE FIRE
WEATHER WATCH IS NO LONGER IN EFFECT.

* LOCATION... ALONG THE COPPER RIVER

* 20 FT WINDS...SOUTH 30 MPH

* RELATIVE HUMIDITY...24 TO 35 PERCENT

* TIMING...AFTERNOON AND EARLY EVENING.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS
ARE IMMINENT OR OCCURRING NOW...OR WILL SHORTLY. IT IS DIRECTED
TOWARD FIRE AGENCIES...AND THROUGH THEM TO THE PUBLIC.

&&

$$
2 follow-up statements
541 
WWAK61 PAFC 232355
RFWAER

URGENT - FIRE WEATHER MESSAGE
NATIONAL WEATHER SERVICE ANCHORAGE AK
355 PM AKDT SAT JUL 23 2011

A SURFACE RIDGE WILL BUILD OVER SOUTHCENTRAL AHEAD OF A FRONT
MOVING OUT OF THE BERING SEA. THE TIGHTER PRESSURE GRADIENT IS
GENERATING STRONG WINDS ALONG THE COPPER RIVER AND IS COMBINING WITH
RELATIVE HUMIDITIES LESS THAN 30 PERCENT TO PRODUCE RED FLAG
CONDITIONS.

AKZ141-240600-
/X.CON.PAFC.FW.W.0015.000000T0000Z-110724T0600Z/
COPPER RIVER BASIN-
355 PM AKDT SAT JUL 23 2011

...RED FLAG WARNING REMAINS IN EFFECT UNTIL 10 PM AKDT THIS
EVENING FOR STRONG WINDS FOR THE COPPER RIVER...

A RED FLAG WARNING REMAINS IN EFFECT UNTIL 10 PM AKDT THIS
EVENING. 

* LOCATION... ALONG THE COPPER RIVER

* 20 FT WINDS...SOUTH 10 TO 20 MPH WITH GUSTS UP TO 30 MPH.

* RELATIVE HUMIDITY...25 TO 35 PERCENT.

* TIMING...THIS EVENING.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS
ARE IMMINENT OR OCCURRING NOW...OR WILL SHORTLY. IT IS DIRECTED
TOWARD FIRE AGENCIES...AND THROUGH THEM TO THE PUBLIC.

&&

$$
458 
WWAK61 PAFC 240418
RFWAER

URGENT - FIRE WEATHER MESSAGE
NATIONAL WEATHER SERVICE ANCHORAGE AK
818 PM AKDT SAT JUL 23 2011

...THE STRONG WIND CONTINUES ALONG THE COPPER RIVER HOWEVER THE
HUMIDITY HAS RECOVERED TO ABOVE 35 PERCENT AND RED FLAG CONDITIONS
ARE NO LONGER OCCURRING...

AKZ141-240530-
/X.CAN.PAFC.FW.W.0015.000000T0000Z-110724T0600Z/
COPPER RIVER BASIN-
818 PM AKDT SAT JUL 23 2011

...RED FLAG WARNING IS CANCELLED FOR STRONG WINDS FOR THE COPPER
RIVER...

THE NATIONAL WEATHER SERVICE IN ANCHORAGE HAS CANCELLED THE RED
FLAG WARNING. 

STRONG GUSTY SOUTH WIND CONTINUES ALONG THE COPPER RIVER. THE
HUMIDITY HAS RECOVERED TO ABOVE 35 PERCENT AND THE RED FLAG
CONDITIONS ARE NO LONGER OCCURRING.

$$

The office that day

Everything else NWS Anchorage, AK issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jul 22, 4:00 PM AKDTGale WarningAFC48 hr
Jul 22, 4:00 PM AKDTSmall Craft AdvisoryAFC20 hr
Jul 23, 4:00 AM AKDTGale WarningAFC24 hr
Jul 23, 4:00 AM AKDTGale WarningAFC12 hr
Jul 23, 4:00 AM AKDTSmall Craft AdvisoryAFC3 days
Jul 23, 4:00 AM AKDTSmall Craft AdvisoryAFC3 days
Jul 23, 9:10 AM AKDTGale WarningAFC19 hr
Jul 23, 12:15 PM AKDTGale WarningAFC16 hr

Nearby

Red Flag Warnings in Alaska, 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.