Alert archive / Wyoming / Red Flag Warnings in 2011

Red Flag Warning 7, NWS Cheyenne, WY

August 23, 2011

NWS Cheyenne, WY issued this red flag warning at Aug 23, 2011, 4:49 AM MDT. It took effect at Aug 23, 2011, 11:00 AM MDT. It was in force for 9 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
Aug 23, 2011, 4:49 AM MDT (10:49 UTC)
In effect from
Aug 23, 2011, 11:00 AM MDT
Expired
Aug 23, 2011, 8:00 PM MDT
In force
9 hr
Issued by
NWS Cheyenne, WY

The text

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

497 
WWUS85 KCYS 231049
RFWCYS

URGENT - FIRE WEATHER MESSAGE
NATIONAL WEATHER SERVICE CHEYENNE WY
449 AM MDT TUE AUG 23 2011

...RED FLAG WARNING IS IN EFFECT FOR FIRE WEATHER ZONES...301...
302...306 AND 308 FROM LATE THIS MORNING THROUGH THE EARLY
EVENING...

.VERY WARM AND DRY CONDITIONS WILL ALLOW THE RELATIVE HUMIDITY TO
DROP TO BETWEEN 5 AND 13 PERCENT OVER EAST CENTRAL WYOMING...
THE LARAMIE VALLEY AND UPPER NORTH PLATTE VALLEY LATE THIS 
MORNING AND CONTINUE THROUGH THE EARLY EVENING HOURS. ALSO...
WEST TO NORTHWEST SURFACE WINDS WILL INCREASE BY LATE MORNING OVER
THOSE AREAS WITH SOME GUSTS AS HIGH AS 35 MPH. THE COMBINATION OF
THE VERY WARM...DRY AND WINDY WEATHER ALONG WITH DEAD AND DRY 
GRASSES WILL CREATE CRITICAL FIRE WEATHER CONDITIONS OVER THE 
WARNED AREAS LATE THIS AFTERNOON THROUGH THE EARLY EVENING.

WYZ301-302-232300-
/O.UPG.KCYS.FW.A.0005.110823T1800Z-110824T0300Z/
/O.NEW.KCYS.FW.W.0007.110823T1700Z-110824T0200Z/
NIOBRARA/LOWER ELEVATIONS OF CONVERSE/THUNDER BASIN NATIONAL
GRASSLAND-NORTH LARAMIE RANGE/MEDICINE BOW NF-
449 AM MDT TUE AUG 23 2011

...RED FLAG WARNING IN EFFECT FROM 11 AM THIS MORNING TO 8 PM MDT
THIS EVENING FOR VERY WARM...DRY AND WINDY WEATHER FOR EAST
CENTRAL WYOMING.

THE NATIONAL WEATHER SERVICE IN CHEYENNE HAS ISSUED A RED FLAG
WARNING FOR VERY WARM...DRY AND WINDY WEATHER...WHICH IS IN
EFFECT FROM 11 AM THIS MORNING TO 8 PM MDT THIS EVENING. THE FIRE
WEATHER WATCH IS NO LONGER IN EFFECT.

* AFFECTED AREA...EAST CENTRAL WYOMING.

* WINDS...WEST TO NORTHWEST 15 TO 25 MPH WITH GUSTS UP TO 35 MPH.

* TIMING...LATE THIS MORNING THROUGH THE EARLY EVENING.  

* RELATIVE HUMIDITY...5 TO 13 PERCENT. 

* TEMPERATURES...IN THE UPPER 80S TO MID 90S. 

* IMPACTS...THE VERY WARM...DRY AND WINDY WEATHER WILL CREATE THE
  POTENTIAL FOR ANY OUTDOORS FIRES TO SPREAD RAPIDLY.  

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.

&&

$$

WYZ306-308-232300-
/O.NEW.KCYS.FW.W.0007.110823T1700Z-110824T0200Z/
UPPER NORTH PLATTE RIVER BASIN-LARAMIE VALLEY/SHIRLEY BASIN-
449 AM MDT TUE AUG 23 2011

...RED FLAG WARNING IN EFFECT FROM 11 AM THIS MORNING TO 8 PM MDT
THIS EVENING FOR THE VERY WARM...DRY AND WINDY WEATHER FOR THE
LARAMIE VALLEY AND THE UPPER NORTH PLATTE RIVER VALLEY. 

THE NATIONAL WEATHER SERVICE IN CHEYENNE HAS ISSUED A RED FLAG
WARNING FOR VERY WARM...DRY AND WINDY WEATHER WHICH IS IN EFFECT
FROM 11 AM THIS MORNING TO 8 PM MDT THIS EVENING.

* AFFECTED AREA...LARAMIE VALLEY AND THE UPPER NORTH PLATTE VALLEY.

* WINDS...WEST 15 TO 25 MPH WITH GUSTS UP TO 35 MPH.

* TIMING...LATE THIS MORNING THROUGH THE EARLY EVENING. 

* RELATIVE HUMIDITY...7 TO 13 PERCENT. 

* TEMPERATURES...85 TO 90. 

* IMPACTS...THE VERY WARM...DRY AND WINDY WEATHER WILL CREATE THE
  POTENTIAL FOR ANY OUTDOORS FIRES TO SPREAD RAPIDLY.  

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.

&&

$$

WEILAND
3 follow-up statements
844 
WWUS85 KCYS 231648
RFWCYS

URGENT - FIRE WEATHER MESSAGE
NATIONAL WEATHER SERVICE CHEYENNE WY
1048 AM MDT TUE AUG 23 2011

...RED FLAG WARNING IS IN EFFECT FOR FIRE WEATHER ZONES...301...
302...306...308 AND 313 THROUGH EARLY EVENING...

.VERY WARM AND DRY CONDITIONS WILL ALLOW THE RELATIVE HUMIDITY TO
DROP TO BETWEEN 5 AND 13 PERCENT OVER EAST CENTRAL WYOMING...THE
LARAMIE VALLEY...UPPER NORTH PLATTE VALLEY AND THE SOUTHERN
NEBRASKA PANHANDLE TODAY. WEST TO NORTHWEST SURFACE WINDS WILL
CONTINUE OVER THOSE AREAS WITH SOME GUSTS AS HIGH AS 35 MPH. THE
COMBINATION OF THE VERY WARM...DRY AND WINDY WEATHER ALONG WITH
DEAD AND DRY GRASSES WILL CREATE CRITICAL FIRE WEATHER CONDITIONS
TODAY.

NEZ313-240000-
/O.EXB.KCYS.FW.W.0007.110823T1700Z-110824T0000Z/
SCOTTS BLUFF NATIONAL MONUMENT/WILDCAT HILLS-
1048 AM MDT TUE AUG 23 2011

...RED FLAG WARNING IN EFFECT UNTIL 6 PM MDT THIS EVENING FOR
HOT...DRY AND WINDY WEATHER FOR THE SOUTHERN NEBRASKA PANHANDLE...

THE NATIONAL WEATHER SERVICE IN CHEYENNE HAS ISSUED A RED FLAG
WARNING FOR HOT...DRY AND WINDY WEATHER...WHICH IS IN EFFECT UNTIL
6 PM MDT THIS EVENING. 

* AFFECTED AREA...SOUTHERN NEBRASKA PANHANDLE.

* WINDS...NORTHWEST 15 TO 25 MPH WITH GUSTS UP TO 35 MPH.

* TIMING...THROUGH 6 PM.

* RELATIVE HUMIDITY...10 TO 15 PERCENT.

* TEMPERATURES...UPPER 90S TO LOW 100S.

* IMPACTS...GUSTY WINDS COMBINED WITH THE LOW RELATIVE HUMIDITY
  WILL CREATE THE POTENTIAL FOR RAPID FIRE GROWTH.

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.

&&

$$

WYZ301-302-306-308-240000-
/O.CON.KCYS.FW.W.0007.110823T1700Z-110824T0200Z/
NIOBRARA/LOWER ELEVATIONS OF CONVERSE/THUNDER BASIN NATIONAL
GRASSLAND-NORTH LARAMIE RANGE/MEDICINE BOW NF-
UPPER NORTH PLATTE RIVER BASIN-LARAMIE VALLEY/SHIRLEY BASIN-
1048 AM MDT TUE AUG 23 2011

...RED FLAG WARNING REMAINS IN EFFECT UNTIL 8 PM MDT THIS EVENING
FOR HOT...DRY AND WINDY WEATHER FOR EAST CENTRAL WYOMING...LARAMIE
VALLEY AND UPPER NORTH PLATTE RIVER VALLEY...

A RED FLAG WARNING REMAINS IN EFFECT UNTIL 8 PM MDT THIS EVENING.

* AFFECTED AREA...EAST CENTRAL WYOMING...LARAMIE VALLEY AND UPPER
  NORTH PLATTE RIVER VALLEY.

* WINDS...WEST TO NORTHWEST 15 TO 25 MPH WITH GUSTS UP TO 35 MPH.

* TIMING...THROUGH 8 PM.  

* RELATIVE HUMIDITY...5 TO 13 PERCENT. 

* TEMPERATURES...IN THE UPPER 80S TO MID 90S. 

* IMPACTS...THE VERY WARM...DRY AND WINDY WEATHER WILL CREATE THE
  POTENTIAL FOR ANY OUTDOORS FIRES TO SPREAD RAPIDLY.  

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.

&&

$$

HAHN
832 
WWUS85 KCYS 232358
RFWCYS

URGENT - FIRE WEATHER MESSAGE
NATIONAL WEATHER SERVICE CHEYENNE WY
558 PM MDT TUE AUG 23 2011

...RED FLAG WARNING IS IN EFFECT FOR FIRE WEATHER ZONES...301...
302...306...308 AND 313 THROUGH EARLY EVENING...

.VERY WARM AND DRY CONDITIONS WILL KEEP RELATIVE HUMIDITY BETWEEN
5 AND 13 PERCENT OVER EAST CENTRAL WYOMING...THE LARAMIE
VALLEY...UPPER NORTH PLATTE VALLEY AND THE SOUTHERN NEBRASKA
PANHANDLE THROUGH EARLY THIS EVENING. WEST TO NORTHWEST SURFACE
WINDS WILL CONTINUE OVER THOSE AREAS WITH SOME GUSTS AS HIGH AS 25
TO 35 MPH. THE COMBINATION OF THE VERY WARM...DRY AND WINDY
WEATHER ALONG WITH DEAD AND DRY GRASSES WILL CREATE CRITICAL FIRE
WEATHER CONDITIONS THROUGH THE EARLY EVENING.

NEZ313-240200-
/O.EXT.KCYS.FW.W.0007.000000T0000Z-110824T0200Z/
SCOTTS BLUFF NATIONAL MONUMENT/WILDCAT HILLS-
558 PM MDT TUE AUG 23 2011

...RED FLAG WARNING NOW IN EFFECT UNTIL 8 PM MDT THIS EVENING FOR
HOT...DRY AND WINDY WEATHER FOR THE SOUTHERN NEBRASKA PANHANDLE...

THE RED FLAG WARNING IS NOW IN EFFECT UNTIL 8 PM MDT THIS
EVENING. 

* AFFECTED AREA...SOUTHERN NEBRASKA PANHANDLE.

* WINDS...NORTH 10 TO 15 MPH WITH GUSTS UP TO 30 MPH.

* TIMING...THROUGH 8 PM.

* RELATIVE HUMIDITY...AS LOW AS 8 PERCENT.

* TEMPERATURES...IN THE LOWER 90S.

* IMPACTS...GUSTY WINDS COMBINED WITH THE LOW RELATIVE HUMIDITY 
  WILL CREATE THE POTENTIAL FOR RAPID FIRE GROWTH. 

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.

&&

$$

WYZ301-302-306-308-240200-
/O.CON.KCYS.FW.W.0007.000000T0000Z-110824T0200Z/
NIOBRARA/LOWER ELEVATIONS OF CONVERSE/THUNDER BASIN NATIONAL
GRASSLAND-NORTH LARAMIE RANGE/MEDICINE BOW NF-
UPPER NORTH PLATTE RIVER BASIN-LARAMIE VALLEY/SHIRLEY BASIN-
558 PM MDT TUE AUG 23 2011

...RED FLAG WARNING REMAINS IN EFFECT UNTIL 8 PM MDT THIS EVENING
FOR HOT...DRY AND WINDY WEATHER FOR EAST CENTRAL WYOMING...
LARAMIE VALLEY AND UPPER NORTH PLATTE RIVER VALLEY...

A RED FLAG WARNING REMAINS IN EFFECT UNTIL 8 PM MDT THIS EVENING.

* AFFECTED AREA...EAST CENTRAL WYOMING...LARAMIE VALLEY AND 
  UPPER NORTH PLATTE RIVER VALLEY. 

* WINDS...NORTHWEST 10 TO 15 MPH WITH GUSTS UP TO 35 MPH.

* TIMING...THROUGH 8 PM.

* RELATIVE HUMIDITY...AS LOW AS 6 PERCENT.

* TEMPERATURES...IN THE UPPER 80S.

* IMPACTS...THE VERY WARM...DRY AND WINDY WEATHER WILL CREATE 
  THE POTENTIAL FOR ANY OUTDOORS FIRES TO SPREAD RAPIDLY. 

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.

&&

$$
COX
966 
WWUS85 KCYS 240202
RFWCYS

URGENT - FIRE WEATHER MESSAGE
NATIONAL WEATHER SERVICE CHEYENNE WY
802 PM MDT TUE AUG 23 2011


WYZ301-302-306-308-240315-
/O.EXP.KCYS.FW.W.0007.000000T0000Z-110824T0200Z/
NIOBRARA/LOWER ELEVATIONS OF CONVERSE/THUNDER BASIN NATIONAL
GRASSLAND-NORTH LARAMIE RANGE/MEDICINE BOW NF-
UPPER NORTH PLATTE RIVER BASIN-LARAMIE VALLEY/SHIRLEY BASIN-
802 PM MDT TUE AUG 23 2011

...RED FLAG WARNING WILL EXPIRE AT 8 PM MDT THIS EVENING FOR
PORTIONS OF SOUTHEAST WYOMING...

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

WIND SPEEDS HAVE DIMINISHED TO 10 TO 20 MPH ACROSS THE AREA.
RELATIVE HUMIDITIES SHOULD CONTINUE TO INCREASE TO 40 TO 50
PERCENT AFTER MIDNIGHT.

$$

NEZ313-240315-
/O.EXP.KCYS.FW.W.0007.000000T0000Z-110824T0200Z/
SCOTTS BLUFF NATIONAL MONUMENT/WILDCAT HILLS-
802 PM MDT TUE AUG 23 2011

...RED FLAG WARNING WILL EXPIRE AT 8 PM MDT THIS EVENING FOR THE
SOUTHERN HALF OF THE NEBRASKA PANHANDLE.

WIND SPEEDS HAVE DIMINISHED TO 10 TO 20 MPH ACROSS THE AREA.
RELATIVE HUMIDITIES SHOULD CONTINUE TO INCREASE TO 40 TO 50
PERCENT AFTER MIDNIGHT. 

$$

COX

Nearby

Red Flag Warnings in Wyoming, 2011Red Flag Warnings in Nebraska, 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.