Red Flag Warning 9, NWS Riverton, WY

Issued

Jun 4, 2012, 11:32 PM MDT (05:32 UTC)

In effect from

Jun 5, 2012, 12:00 PM MDT

Expired

Jun 5, 2012, 8:51 PM MDT

In force

9 hr

Issued by

NWS Riverton, WY

Counties Fremont County, WY, Hot Springs County, WY, Johnson County, WY, Natrona County, WY, Washakie County, WY

The Riverton/Lander radar (KRIW), 86 km from the middle of the area, began a volume at 05:32 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.

680 
WWUS85 KRIW 050532
RFWRIW

URGENT - FIRE WEATHER MESSAGE
NATIONAL WEATHER SERVICE RIVERTON WY
1132 PM MDT MON JUN 4 2012

...DANGEROUS FIRE WEATHER CONDITIONS ACROSS FIRE ZONES 280 281
AND 285 TUESDAY AFTERNOON AND EARLY EVENING...

.HOT TEMPERATURES ON TUESDAY WILL COMBINE WITH STRONG SOUTHERLY
WINDS AND VERY LOW RELATIVE HUMIDITIES BETWEEN 10 AND 15 PERCENT
TO PRODUCE CRITICAL FIRE WEATHER CONDITIONS. A STRONG COLD FRONT
WILL ARRIVE AFTER DARK WHICH WILL SHIFT WINDS TO THE WEST AND
SOUTHWEST BUT ALLOW FOR HIGHER RELATIVE HUMIDITIES AND MUCH COOLER
TEMPERATURES TO ARRIVE.

WYZ280-052100-
/O.UPG.KRIW.FW.A.0007.120605T1800Z-120606T0300Z/
/O.NEW.KRIW.FW.W.0009.120605T1800Z-120606T0300Z/
NATRONA COUNTY/CASPER BLM-
1132 PM MDT MON JUN 4 2012

...RED FLAG WARNING IN EFFECT FROM NOON TO 9 PM MDT TUESDAY FOR
WIND AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONE 280...

THE NATIONAL WEATHER SERVICE IN RIVERTON HAS ISSUED A RED FLAG
WARNING FOR WIND...HOT TEMPERATURES AND LOW RELATIVE
HUMIDITY...WHICH IS IN EFFECT FROM NOON TO 9 PM MDT TUESDAY. THE
FIRE WEATHER WATCH IS NO LONGER IN EFFECT.

* AFFECTED AREA...FIRE WEATHER ZONE 280.

* WINDS...SOUTH 25 TO 35 MPH WITH GUSTS UP TO 50 MPH.

* RELATIVE HUMIDITY...AS LOW AS 10 PERCENT.

* IMPACTS...THE COMBINATION OF STRONG SOUTHERLY WINDS...VERY LOW 
  RELATIVE HUMIDITIES COMBINED WITH CRITICALLY DRY FUELS WILL 
  RESULT IN ENHANCED FIRE BEHAVIOR DURING THE AFTERNOON AND 
  EARLY EVENING. 

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.

&&

$$

WYZ285-052100-
/O.UPG.KRIW.FW.A.0007.120605T1800Z-120606T0300Z/
/O.NEW.KRIW.FW.W.0009.120605T1800Z-120606T0300Z/
SOUTH BIGHORN MOUNTAINS-
1132 PM MDT MON JUN 4 2012

...RED FLAG WARNING IN EFFECT FROM NOON TO 9 PM MDT TUESDAY FOR
WIND AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONE 285...

THE NATIONAL WEATHER SERVICE IN RIVERTON HAS ISSUED A RED FLAG
WARNING FOR WIND...HOT TEMPERATURE AND LOW RELATIVE
HUMIDITY...WHICH IS IN EFFECT FROM NOON TO 9 PM MDT TUESDAY. THE
FIRE WEATHER WATCH IS NO LONGER IN EFFECT.

* AFFECTED AREA...FIRE WEATHER ZONE 285.

* WINDS...SOUTH 25 TO 35 MPH WITH GUSTS UP TO 55 MPH.

* RELATIVE HUMIDITY...AS LOW AS 10 PERCENT.

* IMPACTS...THE COMBINATION OF STRONG SOUTHERLY WINDS...VERY LOW 
  RELATIVE HUMIDITIES COMBINED WITH CRITICALLY DRY FUELS WILL 
  RESULT IN ENHANCED FIRE BEHAVIOR DURING THE AFTERNOON AND 
  EARLY EVENING. 

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.

&&

$$

WYZ281-052100-
/O.UPG.KRIW.FW.A.0007.120605T1800Z-120606T0300Z/
/O.NEW.KRIW.FW.W.0009.120605T1800Z-120606T0300Z/
JOHNSON COUNTY/CASPER BLM-
1132 PM MDT MON JUN 4 2012

...RED FLAG WARNING IN EFFECT FROM NOON TO 9 PM MDT TUESDAY FOR
WIND AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONE 281...

THE NATIONAL WEATHER SERVICE IN RIVERTON HAS ISSUED A RED FLAG
WARNING FOR WIND AND LOW RELATIVE HUMIDITY...WHICH IS IN EFFECT
FROM NOON TO 9 PM MDT TUESDAY. THE FIRE WEATHER WATCH IS NO
LONGER IN EFFECT.

* AFFECTED AREA...FIRE WEATHER ZONE 281.

* WINDS...SOUTH 20 TO 25 MPH WITH GUSTS UP TO 45 MPH.

* RELATIVE HUMIDITY...10 TO 15 PERCENT.

* IMPACTS...THE COMBINATION OF STRONG SOUTHERLY WINDS...VERY LOW 
  RELATIVE HUMIDITIES COMBINED WITH CRITICALLY DRY FUELS WILL 
  RESULT IN ENHANCED FIRE BEHAVIOR DURING THE AFTERNOON AND 
  EARLY EVENING. 

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.

&&

$$

HTTP://WEATHER.GOV/RIVERTON

335 
WWUS85 KRIW 051910
RFWRIW

URGENT - FIRE WEATHER MESSAGE
NATIONAL WEATHER SERVICE RIVERTON WY
110 PM MDT TUE JUN 5 2012

...DANGEROUS FIRE WEATHER CONDITIONS ACROSS FIRE ZONES
280 281 AND 285 TUESDAY AFTERNOON AND EARLY EVENING...

.HOT TEMPERATURES THIS AFTERNOON WILL COMBINE WITH STRONG SOUTHERLY 
WINDS AND VERY LOW RELATIVE HUMIDITIES BETWEEN 10 AND 15 PERCENT
TO PRODUCE CRITICAL FIRE WEATHER CONDITIONS. A STRONG COLD FRONT
WILL ARRIVE AFTER DARK WHICH WILL SHIFT WINDS TO THE WEST AND
SOUTHWEST BUT ALLOW FOR HIGHER RELATIVE HUMIDITIES AND MUCH COOLER
TEMPERATURES TO ARRIVE.

WYZ280-060300-
/O.CON.KRIW.FW.W.0009.000000T0000Z-120606T0300Z/
NATRONA COUNTY/CASPER BLM-
110 PM MDT TUE JUN 5 2012

...RED FLAG WARNING REMAINS IN EFFECT UNTIL 9 PM MDT THIS EVENING
FOR WIND AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONE 280...

* AFFECTED AREA...FIRE WEATHER ZONE 280.

* WINDS...SOUTH 25 TO 35 MPH WITH GUSTS UP TO 50 MPH.

* RELATIVE HUMIDITY...AS LOW AS 10 PERCENT.

* IMPACTS...THE COMBINATION OF STRONG SOUTHERLY WINDS...VERY LOW 
  RELATIVE HUMIDITIES COMBINED WITH CRITICALLY DRY FUELS WILL 
  RESULT IN ENHANCED FIRE BEHAVIOR DURING THE AFTERNOON AND 
  EARLY EVENING. 

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.

&&

$$

WYZ285-060300-
/O.CON.KRIW.FW.W.0009.000000T0000Z-120606T0300Z/
SOUTH BIGHORN MOUNTAINS-
110 PM MDT TUE JUN 5 2012

...RED FLAG WARNING REMAINS IN EFFECT UNTIL 9 PM MDT THIS EVENING
FOR WIND AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONE 285...

* AFFECTED AREA...FIRE WEATHER ZONE 285.

* WINDS...SOUTH 25 TO 35 MPH WITH GUSTS UP TO 55 MPH.

* RELATIVE HUMIDITY...AS LOW AS 10 PERCENT.

* IMPACTS...THE COMBINATION OF STRONG SOUTHERLY WINDS...VERY LOW 
  RELATIVE HUMIDITIES COMBINED WITH CRITICALLY DRY FUELS WILL 
  RESULT IN ENHANCED FIRE BEHAVIOR DURING THE AFTERNOON AND 
  EARLY EVENING. 

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.

&&

$$

WYZ281-060300-
/O.CON.KRIW.FW.W.0009.000000T0000Z-120606T0300Z/
JOHNSON COUNTY/CASPER BLM-
110 PM MDT TUE JUN 5 2012

...RED FLAG WARNING REMAINS IN EFFECT UNTIL 9 PM MDT THIS EVENING
FOR WIND AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONE 281...

* AFFECTED AREA...FIRE WEATHER ZONE 281.

* WINDS...SOUTH 20 TO 25 MPH WITH GUSTS UP TO 45 MPH.

* RELATIVE HUMIDITY...10 TO 15 PERCENT.

* IMPACTS...THE COMBINATION OF STRONG SOUTHERLY WINDS...VERY LOW 
  RELATIVE HUMIDITIES COMBINED WITH CRITICALLY DRY FUELS WILL 
  RESULT IN ENHANCED FIRE BEHAVIOR DURING THE AFTERNOON AND 
  EARLY EVENING. 

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.

&&

$$

HTTP://WEATHER.GOV/RIVERTON

135 
WWUS85 KRIW 060251
RFWRIW

URGENT - FIRE WEATHER MESSAGE
NATIONAL WEATHER SERVICE RIVERTON WY
851 PM MDT TUE JUN 5 2012


WYZ280-281-285-060400-
/O.CAN.KRIW.FW.W.0009.000000T0000Z-120606T0300Z/
NATRONA COUNTY/CASPER BLM-JOHNSON COUNTY/CASPER BLM-
SOUTH BIGHORN MOUNTAINS-
851 PM MDT TUE JUN 5 2012

...RED FLAG WARNING IS CANCELLED FOR FIRE WEATHER ZONES 280...281 
AND 285...

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

TEMPERATURES HAVE BEGUN TO DROP AND RELATIVE HUMIDITY IS NOW
RISING ABOVE CRITICAL LEVELS. THEREFORE THE RED FLAG WARNING HAS
BEEN CANCELLED. HOWEVER...GUSTY WINDS WILL CONTINUE THROUGH MUCH
OF THE NIGHT.

$$

HTTP://WEATHER.GOV/RIVERTON

Red Flag Warnings in Wyoming, 2012Every red flag warning in 2012

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.