Alert archive / Arizona / Red Flag Warnings in 2012

Red Flag Warning 2, NWS Phoenix, AZ

March 1, 20124 counties in Arizona; Imperial County, Riverside County, California

NWS Phoenix, AZ issued this red flag warning at Mar 1, 2012, 5:01 AM MST for 4 counties in Arizona; Imperial County, Riverside County, California. It took effect at Mar 2, 2012, 11:00 AM MST. It was in force for 9 hr. 1 report came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued: Mar 1, 2012, 5:01 AM MST (12:01 UTC)
In effect from: Mar 2, 2012, 11:00 AM MST
Expired: Mar 2, 2012, 8:00 PM MST
In force: 9 hr
Issued by: NWS Phoenix, AZ

Counties La Paz County, AZ, Maricopa County, AZ, Pinal County, AZ, Yuma County, AZ, Imperial County, CA, Riverside County, CA

The radar

The Yuma radar (KYUX), 113 km from the middle of the area, began a volume at 12:00 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.

What was reported inside it

Time	Report	Where	Remark
Mar 2, 12:00 PM MST	NON-TSTM WND DMG	Mira Loma, CA	MOBILE HOME ROOF RIPPED OFF. REPORTED BY SKYWARN OBSERVOR.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Yuma Intl Airpor, AZ (KYUM), launched 12:00Z, 0.0 hours before the alert went out and 97 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.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 1639 m above ground
0-6 km bulk shear: 51 kt
0-1 km storm-relative helicity: 90 m²/s²
0-3 km storm-relative helicity: -7 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

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

163 
WWUS85 KPSR 011201
RFWPSR

URGENT - FIRE WEATHER MESSAGE
NATIONAL WEATHER SERVICE PHOENIX AZ
501 AM MST THU MAR 1 2012

AZZ131-CAZ231-012015-
/O.NEW.KPSR.FW.W.0002.120302T1800Z-120303T0300Z/
/O.EXT.KPSR.FW.A.0001.120303T0300Z-120303T0400Z/
ARIZONA FIRE WEATHER ZONE 131                                    
YUMA/MARTINEZ LAKE AND VICINITY/LOWER COLORADO RIVER VALLEY AZ-
CALIFORNIA FIRE WEATHER ZONE 231                                 
LOWER COLORADO RIVER VALLEY CA-
501 AM MST THU MAR 1 2012 /401 AM PST THU MAR 1 2012/

...RED FLAG WARNING IN EFFECT FROM 11 AM MST /10 AM PST/ TO 8 PM
MST /7 PM PST/ FRIDAY FOR STRONG WINDS...LOW RELATIVE HUMIDITY
AND VERY HIGH FIRE DANGER FOR THE LOWER COLORADO RIVER VALLEY...

THE NATIONAL WEATHER SERVICE IN PHOENIX HAS ISSUED A RED FLAG
WARNING FOR STRONG WINDS...LOW RELATIVE HUMIDITY AND VERY HIGH FIRE
DANGER...WHICH IS IN EFFECT FROM 11 AM MST /10 AM PST/ TO 8 PM MST
/7 PM PST/ FRIDAY.

* AFFECTED AREA...IN ARIZONA...THE LENGTH OF THE COLORADO RIVER 
  VALLEY FROM PARKER DAM TO YUMA. IN CALIFORNIA...THE ADJACENT 
  CALIFORNIA COLORADO RIVER VALLEY ACROSS FROM ARIZONA. 

* WINDS...NORTH 20 TO 30 MPH WITH GUSTS UP TO 45 MPH.

* TIMING...LATE FRIDAY MORNING THROUGH EARLY FRIDAY EVENING.
  STRONGEST WINDS AND LOWEST HUMIDITY WILL OCCUR DURING THE EARLY
  AFTERNOON HOURS.

* RELATIVE HUMIDITY...DECREASING TO BELOW 10 PERCENT.

* IMPACTS...VEGETATIVE FUELS ARE VERY DRY...AND THE FIRE DANGER 
  IS VERY HIGH. THESE CONDITIONS COMBINED WITH THE IMPACTS OF LOW 
  RELATIVE HUMIDITY AND STRONG WINDS WILL LEAD TO HAZARDOUS FIRE 
  WEATHER CONDITIONS. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

PLEASE ADVISE THE APPROPRIATE OFFICIALS AND FIRE CREWS IN THE
FIELD OF THIS RED FLAG WARNING.

&&

$$

AZZ132-012015-
/O.NEW.KPSR.FW.W.0002.120302T1800Z-120303T0300Z/
/O.EXB.KPSR.FW.A.0001.120303T0300Z-120303T0400Z/
ARIZONA FIRE WEATHER ZONE 132                                    
SOUTH-CENTRAL AND SOUTHWEST DESERTS-
501 AM MST THU MAR 1 2012

...RED FLAG WARNING IN EFFECT FROM 11 AM TO 8 PM MST FRIDAY FOR
STRONG WINDS...LOW RELATIVE HUMIDITY AND VERY HIGH FIRE DANGER
FOR SOUTHWEST ARIZONA...

THE NATIONAL WEATHER SERVICE IN PHOENIX HAS ISSUED A RED FLAG
WARNING FOR STRONG WINDS...LOW RELATIVE HUMIDITY AND VERY HIGH FIRE
DANGER...WHICH IS IN EFFECT FROM 11 AM TO 8 PM MST FRIDAY.

* AFFECTED AREA...IN ARIZONA...SOUTH-CENTRAL AND SOUTHWEST 
  DESERTS...PRIMARILY FOCUSED ON YUMA AND LA PAZ COUNTIES.

* WINDS...NORTH 20 TO 30 MPH WITH GUSTS UP TO 45 MPH.

* TIMING...LATE FRIDAY MORNING THROUGH EARLY FRIDAY EVENING.
  STRONGEST WINDS AND LOWEST HUMIDITY WILL OCCUR DURING THE EARLY
  AFTERNOON HOURS.

* RELATIVE HUMIDITY...DECREASING TO BELOW 10 PERCENT.

* IMPACTS...FUELS ARE DRY AND FIRE DANGER IS HIGH TO VERY HIGH. THESE
  CONDITIONS...COMBINED WITH LOW RELATIVE HUMIDITY AND STRONG WINDS
  WILL LEAD TO WIDESPREAD HAZARDOUS FIRE WEATHER CONDITIONS.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

PLEASE ADVISE THE APPROPRIATE OFFICIALS AND FIRE CREWS IN THE
FIELD OF THIS RED FLAG WARNING.

&&

$$

NATIONAL WEATHER SERVICE PHOENIX IS ON THE INTERNET AT

WEATHER.GOV/PHOENIX

4 follow-up statements

047 
WWUS85 KPSR 011423
RFWPSR

URGENT - FIRE WEATHER MESSAGE
NATIONAL WEATHER SERVICE PHOENIX AZ
723 AM MST THU MAR 1 2012

AZZ131-132-CAZ231-012230-
/O.CAN.KPSR.FW.A.0001.120303T0300Z-120303T0400Z/
/O.CON.KPSR.FW.W.0002.120302T1800Z-120303T0300Z/
ARIZONA FIRE WEATHER ZONE 131                                    
YUMA/MARTINEZ LAKE AND VICINITY/LOWER COLORADO RIVER VALLEY AZ-
ARIZONA FIRE WEATHER ZONE 132                                    
SOUTH-CENTRAL AND SOUTHWEST DESERTS-
CALIFORNIA FIRE WEATHER ZONE 231                                 
LOWER COLORADO RIVER VALLEY CA-
723 AM MST THU MAR 1 2012 /623 AM PST THU MAR 1 2012/

...RED FLAG WARNING REMAINS IN EFFECT FROM 11 AM MST /10 AM PST/
TO 8 PM MST /7 PM PST/ FRIDAY FOR STRONG WINDS...LOW RELATIVE
HUMIDITY AND VERY HIGH FIRE DANGER FOR THE LOWER COLORADO RIVER
VALLEY...
...FIRE WEATHER WATCH IS CANCELLED...

THE NATIONAL WEATHER SERVICE IN PHOENIX HAS CANCELLED THE FIRE
WEATHER WATCH. A RED FLAG WARNING REMAINS IN EFFECT FROM 11 AM
MST /10 AM PST/ TO 8 PM MST /7 PM PST/ FRIDAY. 

* AFFECTED AREA...IN ARIZONA...THE LENGTH OF THE COLORADO RIVER
  VALLEY FROM PARKER DAM TO YUMA. ALSO THE SOUTH-CENTRAL AND
  SOUTHWEST DESERTS...PRIMARILY FOCUSED ON YUMA AND LA PAZ COUNTIES.
  IN CALIFORNIA...THE ADJACENT CALIFORNIA COLORADO RIVER VALLEY
  ACROSS FROM ARIZONA.

* WINDS...NORTH 20 TO 30 MPH WITH GUSTS UP TO 45 MPH.

* TIMING...LATE FRIDAY MORNING THROUGH EARLY FRIDAY EVENING. 
  STRONGEST WINDS AND LOWEST HUMIDITY WILL OCCUR DURING THE 
  EARLY AFTERNOON HOURS. 

* RELATIVE HUMIDITY...DECREASING TO BELOW 10 PERCENT.

* IMPACTS...VEGETATIVE FUELS ARE DRY...AND THE FIRE DANGER IS HIGH TO
  VERY HIGH. THESE CONDITIONS COMBINED WITH THE IMPACTS OF LOW
  RELATIVE HUMIDITY AND STRONG WINDS WILL LEAD TO WIDESPREAD HAZARDOUS
  FIRE WEATHER CONDITIONS.


PRECAUTIONARY/PREPAREDNESS ACTIONS...

PLEASE ADVISE THE APPROPRIATE OFFICIALS AND FIRE CREWS IN THE
FIELD OF THIS RED FLAG WARNING.

&&

$$

NATIONAL WEATHER SERVICE PHOENIX IS ON THE INTERNET AT

WEATHER.GOV/PHOENIX

937 
WWUS85 KPSR 012210
RFWPSR

URGENT - FIRE WEATHER MESSAGE
NATIONAL WEATHER SERVICE PHOENIX AZ
310 PM MST THU MAR 1 2012

CAZ232-021200-
/O.EXA.KPSR.FW.W.0002.120302T1800Z-120303T0300Z/
CALIFORNIA FIRE WEATHER ZONE 232                                 
IMPERIAL COUNTY AND EASTERN RIVERSIDE COUNTY-
210 PM PST THU MAR 1 2012

...RED FLAG WARNING IN EFFECT FROM 10 AM TO 7 PM PST FRIDAY FOR
STRONG WINDS...LOW RELATIVE HUMIDITY AND HIGH FIRE DANGER
FOR EASTERN RIVERSIDE AND NORTHEASTERN IMPERIAL COUNTIES...

THE NATIONAL WEATHER SERVICE IN PHOENIX HAS ISSUED A RED FLAG
WARNING FOR STRONG WINDS...LOW RELATIVE HUMIDITY AND HIGH FIRE
DANGER...WHICH IS IN EFFECT FROM 10 AM TO 7 PM PST FRIDAY.

* AFFECTED AREA...IN CALIFORNIA...NORTHEASTERN IMPERIAL COUNTY AND
  EASTERN RIVERSIDE COUNTY.

* WINDS...NORTH 20 TO 30 MPH WITH GUSTS UP TO 45 MPH.

* TIMING...LATE FRIDAY MORNING THROUGH EARLY FRIDAY EVENING.
  STRONGEST WINDS AND LOWEST HUMIDITIES WILL OCCUR DURING THE EARLY
  AFTERNOON HOURS.

* RELATIVE HUMIDITY...DECREASING BELOW 10 PERCENT.

* IMPACTS...FUELS ARE VERY DRY AND FIRE DANGER IS HIGH. THESE
  CONDITIONS...COMBINED WITH LOW RELATIVE HUMIDITY AND STRONG WINDS
  WILL LEAD TO WIDESPREAD HAZARDOUS FIRE WEATHER CONDITIONS.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

PLEASE ADVISE THE APPROPRIATE OFFICIALS AND FIRE CREWS IN THE
FIELD OF THIS RED FLAG WARNING.

&&

$$

AZZ131-132-CAZ231-021200-
/O.CON.KPSR.FW.W.0002.120302T1800Z-120303T0300Z/
ARIZONA FIRE WEATHER ZONE 131                                    
YUMA/MARTINEZ LAKE AND VICINITY/LOWER COLORADO RIVER VALLEY AZ-
ARIZONA FIRE WEATHER ZONE 132                                    
SOUTH-CENTRAL AND SOUTHWEST DESERTS-
CALIFORNIA FIRE WEATHER ZONE 231                                 
LOWER COLORADO RIVER VALLEY CA-
310 PM MST THU MAR 1 2012 /210 PM PST THU MAR 1 2012/

...RED FLAG WARNING REMAINS IN EFFECT FROM 11 AM MST /10 AM PST/
TO 8 PM MST /7 PM PST/ FRIDAY FOR STRONG WINDS...LOW RELATIVE
HUMIDITY AND VERY HIGH FIRE DANGER FOR THE LOWER COLORADO RIVER
VALLEY...

A RED FLAG WARNING REMAINS IN EFFECT FROM 11 AM MST /10 AM PST/
TO 8 PM MST /7 PM PST/ FRIDAY. 

* AFFECTED AREA...IN ARIZONA...THE LENGTH OF THE COLORADO RIVER 
  VALLEY FROM PARKER DAM TO YUMA. ALSO THE SOUTH-CENTRAL AND 
  SOUTHWEST DESERTS...PRIMARILY FOCUSED ON YUMA AND LA PAZ 
  COUNTIES. IN CALIFORNIA...THE ADJACENT CALIFORNIA COLORADO 
  RIVER VALLEY ACROSS FROM ARIZONA. 

* WINDS...NORTH 15 TO 25 MPH WITH GUSTS UP TO 40 MPH.

* TIMING...LATE FRIDAY MORNING THROUGH EARLY FRIDAY EVENING. 
  STRONGEST WINDS AND LOWEST HUMIDITY WILL OCCUR DURING THE 
  EARLY AFTERNOON HOURS. 

* RELATIVE HUMIDITY...DECREASING TO BELOW 10 PERCENT.

* IMPACTS...VEGETATIVE FUELS ARE DRY...AND THE FIRE DANGER IS 
  HIGH TO VERY HIGH. THESE CONDITIONS COMBINED WITH THE IMPACTS 
  OF LOW RELATIVE HUMIDITY AND STRONG WINDS WILL LEAD TO 
  WIDESPREAD HAZARDOUS FIRE WEATHER CONDITIONS. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

PLEASE ADVISE THE APPROPRIATE OFFICIALS AND FIRE CREWS IN THE
FIELD OF THIS RED FLAG WARNING.

&&

$$

NATIONAL WEATHER SERVICE PHOENIX IS ON THE INTERNET AT

WEATHER.GOV/PHOENIX

101 
WWUS85 KPSR 021019
RFWPSR

URGENT - FIRE WEATHER MESSAGE
NATIONAL WEATHER SERVICE PHOENIX AZ
319 AM MST FRI MAR 2 2012

AZZ131-132-CAZ231-232-022200-
/O.CON.KPSR.FW.W.0002.120302T1800Z-120303T0300Z/
ARIZONA FIRE WEATHER ZONE 131                                    
YUMA/MARTINEZ LAKE AND VICINITY/LOWER COLORADO RIVER VALLEY AZ-
ARIZONA FIRE WEATHER ZONE 132                                    
SOUTH-CENTRAL AND SOUTHWEST DESERTS-
CALIFORNIA FIRE WEATHER ZONE 231                                 
LOWER COLORADO RIVER VALLEY CA-
CALIFORNIA FIRE WEATHER ZONE 232                                 
IMPERIAL COUNTY AND EASTERN RIVERSIDE COUNTY-
319 AM MST FRI MAR 2 2012 /219 AM PST FRI MAR 2 2012/

...RED FLAG WARNING REMAINS IN EFFECT FROM 11 AM MST /10 AM PST/
THIS MORNING TO 8 PM MST /7 PM PST/ THIS EVENING FOR STRONG
WINDS...LOW RELATIVE HUMIDITY AND VERY HIGH FIRE DANGER FOR EASTERN
IMPERIAL AND EASTERN RIVERSIDE COUNTIES IN CALIFORNIA...YUMA AND LA
PAZ COUNTIES IN SOUTHWEST ARIZONA...AND THE LOWER COLORADO RIVER
VALLEY...

A RED FLAG WARNING REMAINS IN EFFECT FROM 11 AM MST /10 AM PST/
THIS MORNING TO 8 PM MST /7 PM PST/ THIS EVENING. 

* AFFECTED AREA...IN ARIZONA...THE LENGTH OF THE COLORADO RIVER
  VALLEY FROM PARKER DAM TO YUMA. ALSO THE SOUTH-CENTRAL AND
  SOUTHWEST DESERTS...INCLUDING YUMA AND LA PAZ COUNTIES. IN
  CALIFORNIA...EASTERN IMPERIAL AND EASTERN RIVERSIDE COUNTIES
  INCLUDING THE ADJACENT CALIFORNIA COLORADO RIVER VALLEY ACROSS
  FROM ARIZONA.

* WINDS...NORTH 20 TO 30 MPH WITH GUSTS UP TO 45 MPH.

* TIMING...LATE THIS MORNING THROUGH EARLY THIS EVENING. STRONGEST
  WINDS AND LOWEST HUMIDITY WILL OCCUR DURING THE EARLY AFTERNOON
  HOURS.

* RELATIVE HUMIDITY...AS LOW AS 7 PERCENT.

* IMPACTS...VEGETATIVE FUELS ARE DRY...AND THE FIRE DANGER IS HIGH
  TO VERY HIGH. THESE CONDITIONS COMBINED WITH THE IMPACTS OF LOW
  RELATIVE HUMIDITY AND STRONG WINDS WILL LEAD TO WIDESPREAD
  HAZARDOUS FIRE WEATHER CONDITIONS.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

PLEASE ADVISE THE APPROPRIATE OFFICIALS AND FIRE CREWS IN THE FIELD
OF THIS RED FLAG WARNING.

&&

$$

NATIONAL WEATHER SERVICE PHOENIX IS ON THE INTERNET AT

WEATHER.GOV/PHOENIX

895 
WWUS85 KPSR 022127
RFWPSR

URGENT - FIRE WEATHER MESSAGE
NATIONAL WEATHER SERVICE PHOENIX AZ
227 PM MST FRI MAR 2 2012

AZZ131-132-CAZ231-232-030300-
/O.CON.KPSR.FW.W.0002.000000T0000Z-120303T0300Z/
ARIZONA FIRE WEATHER ZONE 131                                    
YUMA/MARTINEZ LAKE AND VICINITY/LOWER COLORADO RIVER VALLEY AZ-
ARIZONA FIRE WEATHER ZONE 132                                    
SOUTH-CENTRAL AND SOUTHWEST DESERTS-
CALIFORNIA FIRE WEATHER ZONE 231                                 
LOWER COLORADO RIVER VALLEY CA-
CALIFORNIA FIRE WEATHER ZONE 232                                 
IMPERIAL COUNTY AND EASTERN RIVERSIDE COUNTY-
227 PM MST FRI MAR 2 2012 /127 PM PST FRI MAR 2 2012/

...RED FLAG WARNING REMAINS IN EFFECT UNTIL 8 PM MST /7 PM PST/
THIS EVENING FOR STRONG WINDS...LOW RELATIVE HUMIDITY AND VERY
HIGH FIRE DANGER FOR EASTERN IMPERIAL AND EASTERN RIVERSIDE
COUNTIES IN CALIFORNIA...YUMA AND LA PAZ COUNTIES IN SOUTHWEST
ARIZONA...AND THE LOWER COLORADO RIVER VALLEY...

A RED FLAG WARNING REMAINS IN EFFECT UNTIL 8 PM MST /7 PM PST/
THIS EVENING. 

* AFFECTED AREA...IN ARIZONA...THE LENGTH OF THE COLORADO RIVER 
  VALLEY FROM PARKER DAM TO YUMA. ALSO THE SOUTH-CENTRAL AND 
  SOUTHWEST DESERTS...INCLUDING YUMA AND LA PAZ COUNTIES. IN 
  CALIFORNIA...EASTERN IMPERIAL AND EASTERN RIVERSIDE COUNTIES 
  INCLUDING THE ADJACENT CALIFORNIA COLORADO RIVER VALLEY ACROSS 
  FROM ARIZONA. 

* WINDS...NORTH 20 TO 30 MPH WITH GUSTS UP TO 45 MPH.

* TIMING...THROUGH THE REST OF THE AFTERNOON INTO EARLY THIS EVENING.
  STRONGEST WINDS AND LOWEST HUMIDITY WILL OCCUR DURING THE MID
  AFTERNOON HOURS.

* RELATIVE HUMIDITY...AS LOW AS 5 PERCENT.

* IMPACTS...VEGETATIVE FUELS ARE DRY...AND THE FIRE DANGER IS 
  HIGH TO VERY HIGH. THESE CONDITIONS COMBINED WITH THE IMPACTS 
  OF LOW RELATIVE HUMIDITY AND STRONG WINDS WILL LEAD TO 
  WIDESPREAD HAZARDOUS FIRE WEATHER CONDITIONS. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

PLEASE ADVISE THE APPROPRIATE OFFICIALS AND FIRE CREWS IN THE
FIELD OF THIS RED FLAG WARNING.

&&

$$

NATIONAL WEATHER SERVICE PHOENIX IS ON THE INTERNET AT

WEATHER.GOV/PHOENIX

The office that day

Everything else NWS Phoenix, AZ issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Mar 1, 3:01 PM MST	Wind Advisory	PSR		25 hr
Mar 1, 2:39 AM MST	Wind Advisory	PSR		20 hr

Nearby

Red Flag Warnings in Arizona, 2012 Red Flag Warnings in California, 2012 Every red flag warning in 2012

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.