Red Flag Warning 3, NWS Riverton, WY

Issued

Jun 18, 2021, 2:49 PM MDT (20:49 UTC)

In effect from

Jun 19, 2021, 12:00 PM MDT

Expired

Jun 19, 2021, 8:00 PM MDT

In force

8 hr

Issued by

NWS Riverton, WY

Counties Fremont County, WY, Hot Springs County, WY, Johnson County, WY, Natrona County, WY, Park County, WY, Sublette County, WY, Teton County, WY

The Riverton/Lander radar (KRIW), 58 km from the middle of the area, began a volume at 20:54 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.

186 
WWUS85 KRIW 182049
RFWRIW

URGENT - FIRE WEATHER MESSAGE
National Weather Service Riverton WY
249 PM MDT Fri Jun 18 2021

WYZ280-281-300-191200-
/O.UPG.KRIW.FW.A.0001.210619T1800Z-210620T0200Z/
/O.NEW.KRIW.FW.W.0003.210619T1800Z-210620T0200Z/
Natrona County/Casper BLM-Johnson County/Casper BLM-
Casper Mountain-
249 PM MDT Fri Jun 18 2021

...RED FLAG WARNING IN EFFECT FROM NOON TO 8 PM MDT SATURDAY...

The National Weather Service in Riverton has issued a Red Flag
Warning, which is in effect from noon to 8 PM MDT Saturday. 

* IMPACTS: Low Humidities...Unseasonably Warm Temperatures...and 
  Strong Gusty Winds will create erratic fire behavior and new 
  fire starts. 

* AFFECTED AREA: 
  In Central WY Fire Zones...280...300.
  In North Central WY Fire Zone....281.

* COUNTIES AFFECTED: 
  In Central WY...Natrona.
  In North Central WY...Johnson.

* WIND: Northwest 15 to 25 mph with gusts up to 35 mph.

* HUMIDITY: As low as 9 percent.

* TEMPERATURES: Highs around 90.

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 can
contribute to extreme fire behavior.

&&

$$

WYZ286-288-191200-
/O.UPG.KRIW.FW.A.0001.210619T1800Z-210620T0200Z/
/O.NEW.KRIW.FW.W.0003.210619T1800Z-210620T0200Z/
Absaroka Mountains/North Shoshone NF-
East Wind River Mountains/South Shoshone NF-
249 PM MDT Fri Jun 18 2021

...RED FLAG WARNING IN EFFECT FROM NOON TO 8 PM MDT SATURDAY...

The National Weather Service in Riverton has issued a Red Flag
Warning, which is in effect from noon to 8 PM MDT Saturday. 

* IMPACTS: Low Humidities...Unseasonably Warm Temperatures...and 
  Strong Gusty Winds will create erratic fire behavior and new 
  fire starts. 

* AFFECTED AREA: 
  In Central WY Fire Zone....288.
  In Northwest WY Fire Zone....286.

* COUNTIES AFFECTED: 
  In Central WY...Fremont.
  In North Central WY...Hot Springs...Park.
  In West Central WY...Sublette.

* WIND: West 15 to 25 mph with gusts up to 35 mph.

* HUMIDITY: As low as 13 percent.

* TEMPERATURES: Highs in the mid 70s.

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 can
contribute to extreme fire behavior.

&&

$$

WYZ416-191200-
/O.NEW.KRIW.FW.W.0003.210619T1800Z-210620T0200Z/
West Wind River Mountains/East Zone Bridger Teton NF-
249 PM MDT Fri Jun 18 2021

...RED FLAG WARNING IN EFFECT FROM NOON TO 8 PM MDT SATURDAY...

The National Weather Service in Riverton has issued a Red Flag
Warning, which is in effect from noon to 8 PM MDT Saturday.

* IMPACTS: Low Humidities...Unseasonably Warm Temperatures...and 
  Strong Gusty Winds will create erratic fire behavior and new 
  fire starts. 

* AFFECTED AREA: 
  In West Central WY...Fire Weather Zone 416.

* COUNTIES AFFECTED: 
  In Central WY...Fremont.
  In West Central WY...Sublette.

* WIND: West 15 to 25 mph with gusts up to 40 mph.

* HUMIDITY: As low as 14 percent.

* TEMPERATURES: Highs in the lower 70s.

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 can
contribute to extreme fire behavior.

&&

$$

http://weather.gov/riverton

015 
WWUS85 KRIW 190909
RFWRIW

URGENT - FIRE WEATHER MESSAGE
National Weather Service Riverton WY
309 AM MDT Sat Jun 19 2021

WYZ280-281-300-200200-
/O.CON.KRIW.FW.W.0003.210619T1800Z-210620T0200Z/
Natrona County/Casper BLM-Johnson County/Casper BLM-
Casper Mountain-
309 AM MDT Sat Jun 19 2021

...RED FLAG WARNING REMAINS IN EFFECT FROM NOON TODAY TO 8 PM MDT
THIS EVENING...

* IMPACTS: Low Humidities...Unseasonably Warm Temperatures...and 
  Strong Gusty Winds will create erratic fire behavior and new 
  fire starts. 

* AFFECTED AREA: 
  In Central WY Fire Zones...280...300.
  In North Central WY Fire Zone....281.

* COUNTIES AFFECTED: 
  In Central WY...Natrona.
  In North Central WY...Johnson.

* WIND: Northwest 15 to 25 mph with gusts up to 35 mph.

* HUMIDITY: As low as 9 percent.

* TEMPERATURES: Highs around 90.

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 can
contribute to extreme fire behavior.

&&

$$

WYZ286-288-416-200200-
/O.CON.KRIW.FW.W.0003.210619T1800Z-210620T0200Z/
Absaroka Mountains/North Shoshone NF-
East Wind River Mountains/South Shoshone NF-
West Wind River Mountains/East Zone Bridger Teton NF-
309 AM MDT Sat Jun 19 2021

...RED FLAG WARNING REMAINS IN EFFECT FROM NOON TODAY TO 8 PM MDT
THIS EVENING...

* IMPACTS: Low Humidities...Unseasonably Warm Temperatures...and 
  Strong Gusty Winds will create erratic fire behavior and new 
  fire starts. 

* AFFECTED AREA: 
  In Central WY Fire Zone....288.
  In Northwest WY Fire Zone....286.
  In West Central WY Fire Zone....416.

* COUNTIES AFFECTED: 
  In Central WY...Fremont.
  In North Central WY...Hot Springs...Park.
  In West Central WY...Sublette.

* WIND: West 15 to 25 mph with gusts up to 40 mph.

* HUMIDITY: As low as 13 percent.

* TEMPERATURES: Highs in the mid 70s.

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 can
contribute to extreme fire behavior.

&&

$$

http://weather.gov/riverton

771 
WWUS85 KRIW 200148
RFWRIW

URGENT - FIRE WEATHER MESSAGE
National Weather Service Riverton WY
748 PM MDT Sat Jun 19 2021

WYZ280-281-300-200300-
/O.EXP.KRIW.FW.W.0003.000000T0000Z-210620T0200Z/
Natrona County/Casper BLM-Johnson County/Casper BLM-
Casper Mountain-
748 PM MDT Sat Jun 19 2021

...RED FLAG WARNING WILL EXPIRE AT 8 PM MDT THIS EVENING...

Red Flag conditions will end after 8 PM this as a cold front will
be moving through the region. This will bring higher humidity and
cooler temperatures for the rest of the evening and the overnight
hours. 

$$

WYZ286-288-416-200300-
/O.EXP.KRIW.FW.W.0003.000000T0000Z-210620T0200Z/
Absaroka Mountains/North Shoshone NF-
East Wind River Mountains/South Shoshone NF-
West Wind River Mountains/East Zone Bridger Teton NF-
748 PM MDT Sat Jun 19 2021

...RED FLAG WARNING WILL EXPIRE AT 8 PM MDT THIS EVENING...

Wind speeds will be decreasing after 8 PM this evening along with
a gradual rise in humidity as temperatures cool off this evening.
Thus, Red Flag conditions will be ending in the warned areas. 

$$

http://weather.gov/riverton

Red Flag Warnings in Wyoming, 2021Every red flag warning in 2021

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.