Alert archive / Wyoming / Red Flag Warnings in 2011

Red Flag Warning 3, NWS Cheyenne, WY

July 29, 2011

NWS Cheyenne, WY issued this red flag warning at Jul 29, 2011, 2:34 PM MDT. It was in force for 5 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: Jul 29, 2011, 2:34 PM MDT (20:34 UTC)
Expired: Jul 29, 2011, 7:13 PM MDT
In force: 5 hr
Issued by: NWS Cheyenne, WY

The text

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

470 
WWUS85 KCYS 292034
RFWCYS

URGENT - FIRE WEATHER MESSAGE
NATIONAL WEATHER SERVICE CHEYENNE WY
234 PM MDT FRI JUL 29 2011

...DRY AND BREEZY CONDITIONS TO CONTINUE ACROSS CONVERSE COUNTY...

.CONDITIONS WILL BE DRY AND BREEZY ACROSS EAST CENTRAL WYOMING
THROUGH EARLY THIS EVENING. WEST WIND GUSTS OF 20 TO 30 MPH WILL
COMBINE WITH RELATIVE HUMIDITIES THAT WILL BE IN THE 10 TO 15
PERCENT RANGE TO PRODUCE CRITICAL FIRE WEATHER CONDITIONS. WINDS
WILL DECREASE BY MID-EVENING...HOWEVER HUMIDITY RECOVERIES WILL
REMAIN POOR IN THIS AREA THROUGH THE OVERNIGHT.

WYZ301-302-300200-
/O.NEW.KCYS.FW.W.0003.110729T2034Z-110730T0200Z/
NIOBRARA/LOWER ELEVATIONS OF CONVERSE/THUNDER BASIN NATIONAL
GRASSLAND-NORTH LARAMIE RANGE/MEDICINE BOW NF-
234 PM MDT FRI JUL 29 2011

...RED FLAG WARNING IN EFFECT UNTIL 8 PM MDT THIS EVENING FOR LOW
RELATIVE HUMIDITIES AND GUSTY WINDS FOR FIRE WEATHER ZONES 301 AND
302...

THE NATIONAL WEATHER SERVICE IN CHEYENNE HAS ISSUED A RED FLAG
WARNING FOR LOW RELATIVE HUMIDITIES AND GUSTY WINDS...WHICH IS IN
EFFECT UNTIL 8 PM MDT THIS EVENING.

* AFFECTED AREA...CONVERSE AND NIOBRARA COUNTIES.

* WINDS...SOUTHWEST 10 TO 20 MPH WITH GUSTS UP TO 30 MPH.

* TIMING...THROUGH 8 PM.

* MINIMUM RELATIVE HUMIDITY...10 TO 15 PERCENT.

* IMPACTS...THE STRONG AND GUSTY WINDS COMBINED WITH THE LOW
  RELATIVE HUMIDITIES WILL CREATE THE POTENTIAL FOR RAPID FIRE
  GROWTH AND SPREAD.

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

1 follow-up statement

414 
WWUS85 KCYS 300113
RFWCYS

URGENT - FIRE WEATHER MESSAGE
NATIONAL WEATHER SERVICE CHEYENNE WY
713 PM MDT FRI JUL 29 2011

...RED FLAG WARNING IS CANCELLED FOR FIRE WEATHER ZONES 301 AND 
302...

WYZ301-302-300215-
/O.CAN.KCYS.FW.W.0003.000000T0000Z-110730T0200Z/
NIOBRARA/LOWER ELEVATIONS OF CONVERSE/THUNDER BASIN NATIONAL
GRASSLAND-NORTH LARAMIE RANGE/MEDICINE BOW NF-
713 PM MDT FRI JUL 29 2011

...RED FLAG WARNING IS CANCELLED FOR LOW RELATIVE HUMIDITIES AND
GUSTY WINDS IN FIRE WEATHER ZONES 301 AND 302...

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

WINDS HAVE DIMINISHED BELOW 25 MPH AND RELATIVE HUMIDITIES ARE
SLOWLY RISING ABOVE 15 PERCENT.

$$

JAMSKI

Nearby

Red Flag Warnings in Wyoming, 2011 Every 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.