Alert archive / Arizona / Red Flag Warnings in 2014

Red Flag Warning 3, NWS Las Vegas, NV

March 14, 2014Mohave County, Arizona; Clark County, Nevada; San Bernardino County, California

NWS Las Vegas, NV issued this red flag warning at Mar 14, 2014, 2:36 PM MST for Mohave County, Arizona; Clark County, Nevada; San Bernardino County, California. It took effect at Mar 15, 2014, 12:00 PM MST. 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: Mar 14, 2014, 2:36 PM MST (21:36 UTC)
In effect from: Mar 15, 2014, 12:00 PM MST
Expired: Mar 15, 2014, 6:00 PM MST
In force: 6 hr
Issued by: NWS Las Vegas, NV

Counties Mohave County, AZ, San Bernardino County, CA, Clark County, NV

The radar

The Las Vegas radar (KESX), 15 km from the middle of the area, began a volume at 21:37 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

Las Vegas, NV (KVEF), launched 12:00Z, 9.6 hours before the alert went out and 101 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: 3311 m above ground
0-6 km bulk shear: 23 kt
0-1 km storm-relative helicity: 76 m²/s²
0-3 km storm-relative helicity: 121 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.

172 
WWUS85 KVEF 142136
RFWVEF

URGENT - FIRE WEATHER MESSAGE
NATIONAL WEATHER SERVICE LAS VEGAS NV
236 PM PDT FRI MAR 14 2014

.CRITICAL FIRE WEATHER CONDITIONS ARE EXPECTED SATURDAY AFTERNOON IN
THE COLORADO RIVER VALLEY IN THE WAKE OF A SYSTEM THAT PASSES
TONIGHT ACROSS EASTERN NEVADA...UTAH AND NORTHERN ARIZONA.

AZZ101-CAZ229-NVZ466-151200-
/O.NEW.KVEF.FW.W.0003.140315T1900Z-140316T0100Z/
LAKE MEAD NRA/COLORADO RIVER-AZ SIDE-LOWER COLORADO RIVER VALLEY-
LAKE MEAD NRA/COLORADO RIVER-NV SIDE-
236 PM PDT FRI MAR 14 2014 /236 PM MST FRI MAR 14 2014/

...RED FLAG WARNING IN EFFECT FROM NOON PDT /NOON MST/ TO 6 PM
PDT /6 PM MST/ SATURDAY FOR STRONG WINDS AND LOW RELATIVE
HUMIDITY FOR FIRE WEATHER ZONES 101...229 AND 466...

THE NATIONAL WEATHER SERVICE IN LAS VEGAS HAS ISSUED A RED FLAG
WARNING FOR STRONG WINDS AND LOW RELATIVE HUMIDITY...WHICH IS IN
EFFECT FROM NOON PDT /NOON MST/ TO 6 PM PDT /6 PM MST/ SATURDAY.

* AFFECTED AREA...IN ARIZONA...FIRE WEATHER ZONE 101 LAKE MEAD 
  NRA/COLORADO RIVER-AZ SIDE. IN CALIFORNIA...FIRE WEATHER ZONE 
  229 LOWER COLORADO RIVER VALLEY. IN NEVADA...FIRE WEATHER ZONE 
  466 LAKE MEAD NRA/COLORADO RIVER-NV SIDE.

* TIMING...WINDS WILL INCREASE IN THE LATE MORNING. THE COMBINATION
  OF THE STRONGEST WINDS AND LOWEST RELATIVE HUMIDITY VALUES WILL BE
  BETWEEN 12 PM AND 6 PM. WINDS WILL START TO DECREASE DURING THE
  EARLY EVENING HOURS.

* WIND...NORTH WINDS OF 20 TO 35 MPH WITH GUSTS OF 30 TO 45 MPH. THE
  HIGHEST WINDS WILL BE IN THE LAUGHLIN AND BULLHEAD CITY AREA.

* HUMIDITY...15 PERCENT OR LESS

* IMPACTS...THE COMBINATION OF GUSTY WINDS...LOW RELATIVE HUMIDITY
  AND DRY FUELS CAN CREATE CONDITIONS THAT ARE FAVORABLE FOR ERRATIC
  FIRE BEHAVIOR.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A RED FLAG WARNING MEANS CRITICAL FIRE WEATHER CONDITIONS ARE
EITHER OCCURRING OR IMMINENT. PLEASE ADVISE THE APPROPRIATE FIRE
WEATHER OFFICIALS IN THE FIELD OF THIS RED FLAG WARNING.

&&

$$

STACHELSKI

HTTP://WEATHER.GOV/LASVEGAS

3 follow-up statements

513 
WWUS85 KVEF 151041
RFWVEF

URGENT - FIRE WEATHER MESSAGE
NATIONAL WEATHER SERVICE LAS VEGAS NV
341 AM PDT SAT MAR 15 2014

.CRITICAL FIRE WEATHER CONDITIONS ARE EXPECTED THIS AFTERNOON IN THE
COLORADO RIVER VALLEY AS A SYSTEM PASSES BY THE AREA TO THE EAST
TODAY.

AZZ101-CAZ229-NVZ466-152245-
/O.CON.KVEF.FW.W.0003.140315T1900Z-140316T0100Z/
LAKE MEAD NRA/COLORADO RIVER-AZ SIDE-LOWER COLORADO RIVER VALLEY-
LAKE MEAD NRA/COLORADO RIVER-NV SIDE-
341 AM PDT SAT MAR 15 2014 /341 AM MST SAT MAR 15 2014/

...RED FLAG WARNING REMAINS IN EFFECT FROM NOON PDT /NOON MST/
TODAY TO 6 PM PDT /6 PM MST/ THIS EVENING FOR STRONG WINDS AND
LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONES 101...229 AND 466...

* AFFECTED AREA...IN ARIZONA...FIRE WEATHER ZONE 101 LAKE MEAD 
  NRA/COLORADO RIVER-AZ SIDE. IN CALIFORNIA...FIRE WEATHER ZONE 
  229 LOWER COLORADO RIVER VALLEY. IN NEVADA...FIRE WEATHER ZONE 
  466 LAKE MEAD NRA/COLORADO RIVER-NV SIDE.

* TIMING...WINDS WILL INCREASE IN THE LATE MORNING. THE 
  COMBINATION OF THE STRONGEST WINDS AND LOWEST RELATIVE 
  HUMIDITY VALUES WILL BE BETWEEN 12 PM AND 6 PM. WINDS WILL 
  START TO DECREASE DURING THE EARLY EVENING HOURS. 

* WIND...NORTH WINDS OF 20 TO 35 MPH WITH GUSTS OF 30 TO 45 MPH. 
  THE HIGHEST WINDS WILL BE IN THE LAUGHLIN AND BULLHEAD CITY 
  AREA. 

* HUMIDITY...15 PERCENT OR LESS

* IMPACTS...THE COMBINATION OF GUSTY WINDS...LOW RELATIVE 
  HUMIDITY AND DRY FUELS CAN CREATE CONDITIONS THAT ARE 
  FAVORABLE FOR ERRATIC FIRE BEHAVIOR. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A RED FLAG WARNING MEANS CRITICAL FIRE WEATHER CONDITIONS ARE
EITHER OCCURRING OR IMMINENT. PLEASE ADVISE THE APPROPRIATE FIRE
WEATHER OFFICIALS IN THE FIELD OF THIS RED FLAG WARNING.

&&

$$

BERC

HTTP://WEATHER.GOV/LASVEGAS

334 
WWUS85 KVEF 152142
RFWVEF

URGENT - FIRE WEATHER MESSAGE
NATIONAL WEATHER SERVICE LAS VEGAS NV
242 PM PDT SAT MAR 15 2014

.CRITICAL FIRE WEATHER CONDITIONS WILL CONTINUE THIS AFTERNOON IN
THE COLORADO RIVER VALLEY AS A SYSTEM PASSES BY TO THE EAST.

AZZ101-CAZ229-NVZ466-160100-
/O.CON.KVEF.FW.W.0003.000000T0000Z-140316T0100Z/
LAKE MEAD NRA/COLORADO RIVER-AZ SIDE-LOWER COLORADO RIVER VALLEY-
LAKE MEAD NRA/COLORADO RIVER-NV SIDE-
242 PM PDT SAT MAR 15 2014 /242 PM MST SAT MAR 15 2014/

...RED FLAG WARNING REMAINS IN EFFECT UNTIL 6 PM PDT /6 PM MST/
THIS EVENING FOR STRONG WINDS AND LOW RELATIVE HUMIDITY FOR FIRE
WEATHER ZONES 101...229 AND 466...

* AFFECTED AREA...IN ARIZONA...FIRE WEATHER ZONE 101 LAKE MEAD 
  NRA/COLORADO RIVER-AZ SIDE. IN CALIFORNIA...FIRE WEATHER ZONE 
  229 LOWER COLORADO RIVER VALLEY. IN NEVADA...FIRE WEATHER ZONE 
  466 LAKE MEAD NRA/COLORADO RIVER-NV SIDE.

* TIMING...THE STRONGEST WINDS AND LOWEST RELATIVE HUMIDITY VALUES
  WILL CONTINUE THROUGH 6 PM. WINDS WILL START TO DECREASE DURING
  THE EARLY EVENING HOURS.

* WIND...NORTH WINDS OF 20 TO 35 MPH WITH GUSTS OF 30 TO 45 MPH. 
  THE HIGHEST WINDS WILL BE IN THE LAUGHLIN AND BULLHEAD CITY 
  AREA. 

* HUMIDITY...12 PERCENT OR LESS

* IMPACTS...THE COMBINATION OF GUSTY WINDS...LOW RELATIVE 
  HUMIDITY AND DRY FUELS CAN CREATE CONDITIONS THAT ARE 
  FAVORABLE FOR ERRATIC FIRE BEHAVIOR. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A RED FLAG WARNING MEANS CRITICAL FIRE WEATHER CONDITIONS ARE
EITHER OCCURRING OR IMMINENT. PLEASE ADVISE THE APPROPRIATE FIRE
WEATHER OFFICIALS IN THE FIELD OF THIS RED FLAG WARNING.

&&

$$

HTTP://WEATHER.GOV/LASVEGAS

193 
WWUS85 KVEF 160043
RFWVEF

URGENT - FIRE WEATHER MESSAGE
NATIONAL WEATHER SERVICE LAS VEGAS NV
543 PM PDT SAT MAR 15 2014

AZZ101-CAZ229-NVZ466-160145-
/O.EXP.KVEF.FW.W.0003.000000T0000Z-140316T0100Z/
LAKE MEAD NRA/COLORADO RIVER-AZ SIDE-LOWER COLORADO RIVER VALLEY-
LAKE MEAD NRA/COLORADO RIVER-NV SIDE-
543 PM PDT SAT MAR 15 2014 /543 PM MST SAT MAR 15 2014/

...RED FLAG WARNING WILL EXPIRE AT 6 PM PDT /6 PM MST/ THIS
EVENING FOR STRONG WINDS AND LOW RELATIVE HUMIDITY FOR FIRE
WEATHER ZONES 101...229 AND 466...

WINDS DECREASED BELOW RED FLAG LEVELS LATE THIS AFTERNOON AND WILL
CONTINUE TO DECREASE DURING THE EVENING. RELATIVE HUMIDITY WILL
GRADUALLY INCREASE TO ABOVE 15 PERCENT THROUGH THE NIGHT. MUCH
LIGHTER WINDS ARE EXPECTED SUNDAY.

$$

HTTP://WEATHER.GOV/LASVEGAS

The office that day

Everything else NWS Las Vegas, NV issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Mar 14, 2:14 PM MST	Lake Wind Advisory	VEF	Mohave	29 hr

Nearby

Red Flag Warnings in Arizona, 2014 Red Flag Warnings in Nevada, 2014 Red Flag Warnings in California, 2014 Every red flag warning in 2014

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.