Alert archive / Colorado / Red Flag Warnings in 2011

Red Flag Warning 13, NWS Denver/Boulder, CO

April 7, 201113 counties in Colorado

NWS Denver/Boulder, CO issued this red flag warning at Apr 7, 2011, 2:47 PM MDT for 13 counties in Colorado. It took effect at Apr 8, 2011, 12:00 PM MDT. It was in force for 8 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
Apr 7, 2011, 2:47 PM MDT (20:47 UTC)
In effect from
Apr 8, 2011, 12:00 PM MDT
Expired
Apr 8, 2011, 8:00 PM MDT
In force
8 hr
Issued by
NWS Denver/Boulder, CO

Counties Adams County, CO, Arapahoe County, CO, Boulder County, CO, Broomfield County, CO, Clear Creek County, CO, Denver County, CO, Douglas County, CO, Elbert County, CO, Gilpin County, CO, Jefferson County, CO, Lincoln County, CO, Park County, CO, Washington County, CO

The radar

The Denver radar (KFTG), 25 km from the middle of the area, began a volume at 20:50 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

Denver, CO (KDNR), launched 12:00Z, 8.8 hours before the alert went out and 134 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-pSkew-T log-p diagram, Denver, CO at 12:00Z on 2011-04-07Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Denver, CO at 12:00Z on 2011-04-07The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 55 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
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
1069 m above ground
0-6 km bulk shear
46 kt
0-1 km storm-relative helicity
55 m²/s²
0-3 km storm-relative helicity
23 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.

071 
WWUS85 KBOU 072047
RFWBOU

URGENT - FIRE WEATHER MESSAGE
NATIONAL WEATHER SERVICE DENVER CO
247 PM MDT THU APR 7 2011

...STRONG SOUTHWEST FLOW ALOFT WITH WARMING TEMPERATURES FRIDAY
AND SATURDAY WILL CREATE GUSTY WINDS AND LOW HUMIDITIES ON THE
SURFACE. THIS WILL CREATE HIGH FIRE DANGER ALONG THE SOUTHERN
FRONT RANGE FOOTHILLS AND EASTERN COLORADO PLAINS FRIDAY AFTERNOON
AND EVENING...THEN SPREAD NORTHEAST ON SATURDAY TO INCLUDE THE
NORTHEASTERN PLAINS...

COZ214-216-239>241-245>247-249-080900-
/O.UPG.KBOU.FW.A.0008.110408T1800Z-110409T0200Z/
/O.NEW.KBOU.FW.W.0013.110408T1800Z-110409T0200Z/
/O.NEW.KBOU.FW.A.0009.110409T1800Z-110410T0300Z/
CENTRAL AND SOUTHEAST PARK COUNTY-
JEFFERSON AND WEST DOUGLAS COUNTIES ABOVE 6000 FEET/GILPIN/CLEAR
CREEK/NORTHEAST PARK COUNTIES BELOW 9000 FEET-
BOULDER AND JEFFERSON COUNTIES BELOW 6000 FEET/WEST BROOMFIELD
COUNTY-
NORTH DOUGLAS COUNTY BELOW 6000 FEET/DENVER/WEST ADAMS AND
ARAPAHOE COUNTIES/EAST BROOMFIELD COUNTY-
ELBERT/CENTRAL AND EAST DOUGLAS COUNTIES ABOVE 6000 FEET-
CENTRAL AND EAST ADAMS AND ARAPAHOE COUNTIES-
NORTH AND NORTHEAST ELBERT COUNTY BELOW 6000 FEET/NORTH LINCOLN
COUNTY-
SOUTHEAST ELBERT COUNTY BELOW 6000 FEET/SOUTH LINCOLN COUNTY-
WASHINGTON COUNTY-
247 PM MDT THU APR 7 2011

...RED FLAG WARNING IN EFFECT FROM NOON TO 8 PM MDT FRIDAY FOR
STRONG WINDS AND LOW HUMIDITIES...
...FIRE WEATHER WATCH IN EFFECT FROM SATURDAY AFTERNOON THROUGH
SATURDAY EVENING FOR STRONG WINDS AND LOW HUMIDITIES...

THE NATIONAL WEATHER SERVICE IN DENVER HAS ISSUED A RED FLAG
WARNING...WHICH IS IN EFFECT FROM NOON TO 8 PM MDT FRIDAY. A FIRE
WEATHER WATCH HAS ALSO BEEN ISSUED. THIS FIRE WEATHER WATCH IS IN
EFFECT FROM SATURDAY AFTERNOON THROUGH SATURDAY EVENING. 

* AFFECTED AREA...FIRE WEATHER ZONE 214...ELEVEN MILE CANYON 
  RESERVOIR...FAIRPLAY...GUFFEY...HARTSEL...LAKE GEORGE...SOUTH 
  PARK...FIRE WEATHER ZONE 216...BAILEY...CENTRAL CITY... 
  EVERGREEN...GEORGETOWN...IDAHO SPRINGS...NORTHERN RAMPART 
  RANGE...TARRYALL...WESTCREEK...FIRE WEATHER ZONE 239... 
  ARVADA...BOULDER...GOLDEN...LAKEWOOD...LONGMONT...FIRE 
  WEATHER ZONE 240...AURORA...BRIGHTON...CITY OF DENVER... 
  DENVER INTERNATIONAL AIRPORT...HIGHLANDS RANCH...LITTLETON... 
  PARKER... FIRE WEATHER ZONE 241...CASTLE ROCK...ELBERT... 
  FONDIS... KIOWA...LARKSPUR...FIRE WEATHER ZONE 245... 
  BENNETT... BYERS... DEER TRAIL...LEADER...FIRE WEATHER ZONE 
  246...AGATE... HUGO... LIMON...MATHESON...FIRE WEATHER ZONE 
  247...FORDER... KARVAL... KUTCH...PUNKIN CENTER...FIRE 
  WEATHER ZONE 249... AKRON...COPE... LAST CHANCE...OTIS. 

* TIMING...WINDS WILL BECOME GUSTY AND RELATIVE HUMIDITIES WILL
  FALL AROUND NOON TIME ON FRIDAY CONTINUING THROUGH THE EVENING.
  STRONG SOUTHWEST WINDS AND LOW HUMIDITIES WILL LIKELY OCCUR
  AGAIN ON SATURDAY AFTERNOON AS WELL.

* WIND...SOUTHWEST WINDS WILL BE 15 TO 25 MPH WITH GUSTS TO 40 MPH
  FRIDAY. SATURDAY COULD SEE SLIGHTLY STRONGER SOUTHWEST WINDS.

* HUMIDITY...RELATIVE HUMIDITIES WILL FALL INTO THE 10 TO 15
  PERCENT RANGE FRIDAY. SATURDAY WILL BE THE SAME OR SLIGHTLY
  DRIER. 

* IMPACTS...GUSTY WINDS...LOW HUMIDITIES...AND DRY FUELS WILL MAKE
  CONDITIONS FAVORABLE FOR NEW AND RAPID WILDFIRE GROWTH.


PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

A FIRE WEATHER WATCH MEANS THAT CRITICAL FIRE WEATHER CONDITIONS
ARE POSSIBLE. PLEASE ADVISE THE APPROPRIATE OFFICIALS AND FIRE
CREWS IN THE FIELD OF THIS FIRE WEATHER WATCH.

&&

$$

COZ242>244-248-250-251-080900-
/O.NEW.KBOU.FW.A.0009.110409T1800Z-110410T0300Z/
NORTHEAST WELD COUNTY-CENTRAL AND SOUTH WELD COUNTY-MORGAN COUNTY-
LOGAN COUNTY-SEDGWICK COUNTY-PHILLIPS COUNTY-
247 PM MDT THU APR 7 2011

...FIRE WEATHER WATCH IN EFFECT FROM SATURDAY AFTERNOON THROUGH
SATURDAY EVENING FOR STRONG WINDS AND LOW HUMIDITIES...

THE NATIONAL WEATHER SERVICE IN DENVER HAS ISSUED A FIRE WEATHER
WATCH...WHICH IS IN EFFECT FROM SATURDAY AFTERNOON THROUGH
SATURDAY EVENING. 


* AFFECTED AREA...FIRE WEATHER ZONE 242...BRIGGSDALE...EAST 
  PAWNEE GRASSLANDS...GROVER...PAWNEE BUTTES...RAYMER...
  STONEHAM...FIRE WEATHER ZONE 243...EATON...FORT LUPTON...
  GREELEY...ROGGEN...FIRE WEATHER ZONE 244...BRUSH...FORT 
  MORGAN...GOODRICH...WIGGINS...FIRE WEATHER ZONE 248...CROOK...
  MERINO...STERLING...PEETZ...FIRE WEATHER ZONE 250...
  JULESBURG...OVID...SEDGWICK...FIRE WEATHER ZONE 251...
  AMHERST...HAXTUN...HOLYOKE.

* TIMING...WINDS WILL BECOME GUSTY AND RELATIVE HUMIDITIES WILL
  FALL AROUND NOON TIME SATURDAY CONTINUING THROUGH THE EVENING.

* WIND...SOUTHWEST WINDS WILL BE 15 TO 20 MPH WITH GUSTS TO 30 MPH.

* HUMIDITY...RELATIVE HUMIDITIES WILL FALL INTO THE 10 TO 15
  PERCENT RANGE.

* IMPACTS...GUSTY WINDS...LOW HUMIDITIES...AND DRY FUELS WILL MAKE
  CONDITIONS FAVORABLE FOR NEW AND RAPID WILDFIRE GROWTH.


PRECAUTIONARY/PREPAREDNESS ACTIONS...

A FIRE WEATHER WATCH MEANS THAT CRITICAL FIRE WEATHER CONDITIONS
ARE POSSIBLE. PLEASE ADVISE THE APPROPRIATE OFFICIALS AND FIRE
CREWS IN THE FIELD OF THIS FIRE WEATHER WATCH.

&&

$$
4 follow-up statements
493 
WWUS85 KBOU 080302
RFWBOU

URGENT - FIRE WEATHER MESSAGE
NATIONAL WEATHER SERVICE DENVER CO
902 PM MDT THU APR 7 2011

...STRONG SOUTHWEST FLOW ALOFT WITH WARMING TEMPERATURES FRIDAY
AND SATURDAY WILL CREATE GUSTY WINDS AND LOW HUMIDITIES. THIS
WILL CREATE CRITICAL FIRE DANGER CONDITIONS OVER THE SOUTHERN
FRONT RANGE FOOTHILLS AND PORTIONS OF THE PLAINS FROM DENVER EAST
TOWARD AKRON AND LIMON FRIDAY AFTERNOON AND EVENING. THE CRITICAL
FIRE WEATHER CONDITIONS WILL THEN LIKELY SPREADING NORTHEAST ON
SATURDAY TO INCLUDE ALL OF THE NORTHEASTERN PLAINS OF COLORADO.

COZ214-216-239>241-245>247-249-081515-
/O.CON.KBOU.FW.W.0013.110408T1800Z-110409T0200Z/
/O.CON.KBOU.FW.A.0009.110409T1800Z-110410T0300Z/
CENTRAL AND SOUTHEAST PARK COUNTY-
JEFFERSON AND WEST DOUGLAS COUNTIES ABOVE 6000 FEET/GILPIN/CLEAR
CREEK/NORTHEAST PARK COUNTIES BELOW 9000 FEET-
BOULDER AND JEFFERSON COUNTIES BELOW 6000 FEET/WEST BROOMFIELD
COUNTY-
NORTH DOUGLAS COUNTY BELOW 6000 FEET/DENVER/WEST ADAMS AND
ARAPAHOE COUNTIES/EAST BROOMFIELD COUNTY-
ELBERT/CENTRAL AND EAST DOUGLAS COUNTIES ABOVE 6000 FEET-
CENTRAL AND EAST ADAMS AND ARAPAHOE COUNTIES-
NORTH AND NORTHEAST ELBERT COUNTY BELOW 6000 FEET/NORTH LINCOLN
COUNTY-
SOUTHEAST ELBERT COUNTY BELOW 6000 FEET/SOUTH LINCOLN COUNTY-
WASHINGTON COUNTY-
902 PM MDT THU APR 7 2011

...RED FLAG WARNING REMAINS IN EFFECT FROM NOON TO 8 PM MDT
FRIDAY FOR GUSTY WINDS AND LOW HUMIDITY FOR FIRE WEATHER ZONES
214...216...239...240...241...245...246...247 AND 249...
...FIRE WEATHER WATCH REMAINS IN EFFECT FROM SATURDAY AFTERNOON
THROUGH SATURDAY EVENING FOR GUSTY WINDS AND LOW HUMIDITY FOR
FIRE WEATHER ZONES 214...216...239...240...241...245...246...
247 AND 249...

* AFFECTED AREA...FIRE WEATHER ZONE 214...ELEVEN MILE CANYON 
  RESERVOIR...FAIRPLAY...GUFFEY...HARTSEL...LAKE GEORGE...SOUTH 
  PARK...FIRE WEATHER ZONE 216...BAILEY...CENTRAL CITY... 
  EVERGREEN...GEORGETOWN...IDAHO SPRINGS...NORTHERN RAMPART 
  RANGE...TARRYALL...WESTCREEK...FIRE WEATHER ZONE 239... 
  ARVADA...BOULDER...GOLDEN...LAKEWOOD...LONGMONT...FIRE 
  WEATHER ZONE 240...AURORA...BRIGHTON...CITY OF DENVER... 
  DENVER INTERNATIONAL AIRPORT...HIGHLANDS RANCH...LITTLETON... 
  PARKER...FIRE WEATHER ZONE 241...CASTLE ROCK...ELBERT... 
  FONDIS...KIOWA...LARKSPUR...FIRE WEATHER ZONE 245...BENNETT...
   BYERS...DEER TRAIL...LEADER...FIRE WEATHER ZONE 246...
  AGATE... HUGO...LIMON...MATHESON...FIRE WEATHER ZONE 247...
  FORDER... KARVAL...KUTCH...PUNKIN CENTER...FIRE WEATHER ZONE 
  249... AKRON...COPE...LAST CHANCE...OTIS. 

* TIMING...WINDS WILL BECOME GUSTY AND RELATIVE HUMIDITIES WILL
  FALL AROUND NOON TIME ON FRIDAY CONTINUING INTO FRIDAY EVENING.
  STRONG SOUTHWEST WINDS AND LOW HUMIDITIES WILL LIKELY OCCUR
  AGAIN ON SATURDAY AFTERNOON AND EVENING AS WELL.

* WIND...SOUTHWEST WINDS WILL BE 15 TO 25 MPH WITH GUSTS TO 40 
  MPH FRIDAY. SATURDAY COULD SEE SLIGHTLY STRONGER SOUTHWEST 
  WINDS.

* HUMIDITY...RELATIVE HUMIDITIES WILL FALL INTO THE 10 TO 15 
  PERCENT RANGE FRIDAY. SATURDAY WILL BE THE SAME OR SLIGHTLY 
  DRIER.

* IMPACTS...GUSTY WINDS...LOW HUMIDITIES...AND DRY FUELS WILL
  MAKE CONDITIONS FAVORABLE FOR NEW AND RAPID WILDFIRE GROWTH. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

A FIRE WEATHER WATCH MEANS THAT CRITICAL FIRE WEATHER CONDITIONS
ARE POSSIBLE. PLEASE ADVISE THE APPROPRIATE OFFICIALS AND FIRE
CREWS IN THE FIELD OF THIS FIRE WEATHER WATCH.

&&

$$

COZ242>244-248-250-251-081515-
/O.CON.KBOU.FW.A.0009.110409T1800Z-110410T0300Z/
NORTHEAST WELD COUNTY-CENTRAL AND SOUTH WELD COUNTY-MORGAN COUNTY-
LOGAN COUNTY-SEDGWICK COUNTY-PHILLIPS COUNTY-
902 PM MDT THU APR 7 2011

...FIRE WEATHER WATCH REMAINS IN EFFECT FROM SATURDAY AFTERNOON
THROUGH SATURDAY EVENING FOR GUSTY WINDS AND LOW HUMIDITY FOR
FIRE WEATHER ZONES 242...243...244...248...250 AND 251...

* AFFECTED AREA...FIRE WEATHER ZONE 242...BRIGGSDALE...EAST 
  PAWNEE GRASSLANDS...GROVER...PAWNEE BUTTES...RAYMER... 
  STONEHAM...FIRE WEATHER ZONE 243...EATON...FORT LUPTON... 
  GREELEY...ROGGEN...FIRE WEATHER ZONE 244...BRUSH...FORT 
  MORGAN...GOODRICH...WIGGINS...FIRE WEATHER ZONE 248...CROOK...
   MERINO...STERLING...PEETZ...FIRE WEATHER ZONE 250... 
  JULESBURG...OVID...SEDGWICK...FIRE WEATHER ZONE 251... 
  AMHERST...HAXTUN...HOLYOKE. 

* TIMING...WINDS WILL BECOME GUSTY AND RELATIVE HUMIDITIES WILL 
  FALL AROUND NOON TIME SATURDAY CONTINUING THROUGH THE EVENING.

* WIND...SOUTHWEST WINDS WILL BE 15 TO 20 MPH WITH GUSTS TO 30 
  MPH.

* HUMIDITY...RELATIVE HUMIDITIES WILL FALL INTO THE 10 TO 15 
  PERCENT RANGE.

* IMPACTS...GUSTY WINDS...LOW HUMIDITIES...AND DRY FUELS WILL
  MAKE CONDITIONS FAVORABLE FOR NEW AND RAPID WILDFIRE GROWTH. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A FIRE WEATHER WATCH MEANS THAT CRITICAL FIRE WEATHER CONDITIONS
ARE POSSIBLE. PLEASE ADVISE THE APPROPRIATE OFFICIALS AND FIRE
CREWS IN THE FIELD OF THIS FIRE WEATHER WATCH.

&&

$$

BARJENBRUCH
910 
WWUS85 KBOU 081026
RFWBOU

URGENT - FIRE WEATHER MESSAGE
NATIONAL WEATHER SERVICE DENVER CO
426 AM MDT FRI APR 8 2011

...STRONG SOUTHWEST FLOW ALOFT WITH WARMING TEMPERATURES TODAY AND
SATURDAY WILL CREATE GUSTY WINDS AND LOW HUMIDITIES. THIS WILL
CREATE CRITICAL FIRE DANGER CONDITIONS OVER THE SOUTHERN FRONT
RANGE FOOTHILLS AND PORTIONS OF THE PLAINS FROM DENVER EAST TOWARD
AKRON AND LIMON THIS AFTERNOON AND EVENING. THE CRITICAL FIRE WEATHER
CONDITIONS WILL THEN LIKELY SPREADING NORTHEAST ON SATURDAY TO
INCLUDE ALL OF THE NORTHEASTERN PLAINS OF COLORADO.

COZ214-216-239>241-245>247-249-082230-
/O.CON.KBOU.FW.W.0013.110408T1800Z-110409T0200Z/
/O.CON.KBOU.FW.A.0009.110409T1800Z-110410T0300Z/
CENTRAL AND SOUTHEAST PARK COUNTY-
JEFFERSON AND WEST DOUGLAS COUNTIES ABOVE 6000 FEET/GILPIN/CLEAR
CREEK/NORTHEAST PARK COUNTIES BELOW 9000 FEET-
BOULDER AND JEFFERSON COUNTIES BELOW 6000 FEET/WEST BROOMFIELD
COUNTY-
NORTH DOUGLAS COUNTY BELOW 6000 FEET/DENVER/WEST ADAMS AND
ARAPAHOE COUNTIES/EAST BROOMFIELD COUNTY-
ELBERT/CENTRAL AND EAST DOUGLAS COUNTIES ABOVE 6000 FEET-
CENTRAL AND EAST ADAMS AND ARAPAHOE COUNTIES-
NORTH AND NORTHEAST ELBERT COUNTY BELOW 6000 FEET/NORTH LINCOLN
COUNTY-
SOUTHEAST ELBERT COUNTY BELOW 6000 FEET/SOUTH LINCOLN COUNTY-
WASHINGTON COUNTY-
426 AM MDT FRI APR 8 2011

...RED FLAG WARNING REMAINS IN EFFECT FROM NOON TODAY TO 8 PM MDT
THIS EVENING FOR GUSTY WINDS AND LOW HUMIDITY FOR FIRE WEATHER
ZONES 214...216...239...240...241...245...246...247 AND 249......
FIRE WEATHER WATCH REMAINS IN EFFECT FROM SATURDAY AFTERNOON
THROUGH SATURDAY EVENING FOR GUSTY WINDS AND LOW HUMIDITY FOR
FIRE WEATHER ZONES 214...216...239...240...241...245...246...
247 AND 249...
...FIRE WEATHER WATCH REMAINS IN EFFECT FROM SATURDAY AFTERNOON
THROUGH SATURDAY EVENING FOR GUSTY WINDS AND LOW HUMIDITY FOR
FIRE WEATHER ZONES 214...216...239...240...241...245...246...
247 AND 249......FIRE WEATHER WATCH REMAINS IN EFFECT FROM
SATURDAY AFTERNOON THROUGH SATURDAY EVENING FOR GUSTY WINDS AND
LOW HUMIDITY FOR FIRE WEATHER ZONES 214...216...239...240...241...
245...246... 247 AND 249...

* AFFECTED AREA...FIRE WEATHER ZONE 214...ELEVEN MILE CANYON 
  RESERVOIR...FAIRPLAY...GUFFEY...HARTSEL...LAKE GEORGE...SOUTH 
  PARK...FIRE WEATHER ZONE 216...BAILEY...CENTRAL CITY... 
  EVERGREEN...GEORGETOWN...IDAHO SPRINGS...NORTHERN RAMPART 
  RANGE...TARRYALL...WESTCREEK...FIRE WEATHER ZONE 239... 
  ARVADA...BOULDER...GOLDEN...LAKEWOOD...LONGMONT...FIRE 
  WEATHER ZONE 240...AURORA...BRIGHTON...CITY OF DENVER... 
  DENVER INTERNATIONAL AIRPORT...HIGHLANDS RANCH...LITTLETON... 
  PARKER... FIRE WEATHER ZONE 241...CASTLE ROCK...ELBERT... 
  FONDIS... KIOWA...LARKSPUR...FIRE WEATHER ZONE 245...
  BENNETT... BYERS... DEER TRAIL...LEADER...FIRE WEATHER ZONE 
  246... AGATE... HUGO... LIMON...MATHESON...FIRE WEATHER ZONE 
  247... FORDER... KARVAL... KUTCH...PUNKIN CENTER...FIRE 
  WEATHER ZONE 249... AKRON...COPE... LAST CHANCE...OTIS.

* TIMING...WINDS WILL BECOME GUSTY AND RELATIVE HUMIDITIES WILL
  FALL AROUND NOON TIME AND WILL CONTINUE INTO THIS EVENING.
  STRONG SOUTH TO SOUTHWEST WINDS AND LOW HUMIDITIES WILL LIKELY
  OCCUR AGAIN ON SATURDAY AFTERNOON AND EVENING AS WELL.

* WIND...SOUTH TO SOUTHWEST WINDS WILL BE 15 TO 25 MPH WITH GUSTS
  TO 40 MPH. SATURDAY COULD SEE SLIGHTLY STRONGER SOUTHWEST WINDS.

* HUMIDITY...RELATIVE HUMIDITIES WILL FALL INTO THE 10 TO 15 
  PERCENT RANGE FRIDAY. SATURDAY WILL BE THE SAME OR SLIGHTLY 
  DRIER.

* IMPACTS...GUSTY WINDS...LOW HUMIDITIES...AND DRY FUELS WILL 
  MAKE CONDITIONS FAVORABLE FOR NEW AND RAPID WILDFIRE GROWTH.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

A FIRE WEATHER WATCH MEANS THAT CRITICAL FIRE WEATHER CONDITIONS
ARE POSSIBLE. PLEASE ADVISE THE APPROPRIATE OFFICIALS AND FIRE
CREWS IN THE FIELD OF THIS FIRE WEATHER WATCH.

&&

$$

COZ242>244-248-250-251-082230-
/O.CON.KBOU.FW.A.0009.110409T1800Z-110410T0300Z/
NORTHEAST WELD COUNTY-CENTRAL AND SOUTH WELD COUNTY-MORGAN COUNTY-
LOGAN COUNTY-SEDGWICK COUNTY-PHILLIPS COUNTY-
426 AM MDT FRI APR 8 2011

...FIRE WEATHER WATCH REMAINS IN EFFECT FROM SATURDAY AFTERNOON
THROUGH SATURDAY EVENING FOR GUSTY WINDS AND LOW HUMIDITY FOR
FIRE WEATHER ZONES 242...243...244...248...250 AND 251...

* AFFECTED AREA...FIRE WEATHER ZONE 242...BRIGGSDALE...EAST 
  PAWNEE GRASSLANDS...GROVER...PAWNEE BUTTES...RAYMER... 
  STONEHAM...FIRE WEATHER ZONE 243...EATON...FORT LUPTON... 
  GREELEY...ROGGEN...FIRE WEATHER ZONE 244...BRUSH...FORT 
  MORGAN...GOODRICH...WIGGINS...FIRE WEATHER ZONE 248...CROOK...
   MERINO...STERLING...PEETZ...FIRE WEATHER ZONE 250... 
  JULESBURG...OVID...SEDGWICK...FIRE WEATHER ZONE 251... 
  AMHERST...HAXTUN...HOLYOKE.

* TIMING...WINDS WILL BECOME GUSTY AND RELATIVE HUMIDITIES WILL 
  FALL AROUND NOON TIME SATURDAY CONTINUING THROUGH THE EVENING.

* WIND...SOUTHWEST WINDS WILL BE 15 TO 20 MPH WITH GUSTS TO 30 
  MPH.

* HUMIDITY...RELATIVE HUMIDITIES WILL FALL INTO THE 10 TO 15 
  PERCENT RANGE.

* IMPACTS...GUSTY WINDS...LOW HUMIDITIES...AND DRY FUELS WILL 
  MAKE CONDITIONS FAVORABLE FOR NEW AND RAPID WILDFIRE GROWTH.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A FIRE WEATHER WATCH MEANS THAT CRITICAL FIRE WEATHER CONDITIONS
ARE POSSIBLE. PLEASE ADVISE THE APPROPRIATE OFFICIALS AND FIRE
CREWS IN THE FIELD OF THIS FIRE WEATHER WATCH.

&&

$$
459 
WWUS85 KBOU 082001
RFWBOU

URGENT - FIRE WEATHER MESSAGE
NATIONAL WEATHER SERVICE DENVER CO
201 PM MDT FRI APR 8 2011

...STRONG SOUTHWEST FLOW ALOFT THROUGH SATURDAY WILL CREATE GUSTY
WINDS AND LOW HUMIDITIES. THIS WILL CREATE CRITICAL FIRE DANGER
CONDITIONS OVER THE SOUTHERN FRONT RANGE FOOTHILLS AND PORTIONS OF
THE PLAINS FROM DENVER EAST TOWARD AKRON AND LIMON THROUGH THIS
EVENING. CRITICAL FIRE WEATHER CONDITIONS WILL SPREAD NORTHEAST
ON SATURDAY TO INCLUDE ALL OF THE NORTHEASTERN PLAINS OF COLORADO.

COZ214-216-239>241-245>247-249-090815-
/O.UPG.KBOU.FW.A.0009.110409T1800Z-110410T0300Z/
/O.NEW.KBOU.FW.W.0014.110409T1800Z-110410T0300Z/
/O.CON.KBOU.FW.W.0013.000000T0000Z-110409T0200Z/
CENTRAL AND SOUTHEAST PARK COUNTY-
JEFFERSON AND WEST DOUGLAS COUNTIES ABOVE 6000 FEET/GILPIN/CLEAR
CREEK/NORTHEAST PARK COUNTIES BELOW 9000 FEET-
BOULDER AND JEFFERSON COUNTIES BELOW 6000 FEET/WEST BROOMFIELD
COUNTY-
NORTH DOUGLAS COUNTY BELOW 6000 FEET/DENVER/WEST ADAMS AND
ARAPAHOE COUNTIES/EAST BROOMFIELD COUNTY-
ELBERT/CENTRAL AND EAST DOUGLAS COUNTIES ABOVE 6000 FEET-
CENTRAL AND EAST ADAMS AND ARAPAHOE COUNTIES-
NORTH AND NORTHEAST ELBERT COUNTY BELOW 6000 FEET/NORTH LINCOLN
COUNTY-
SOUTHEAST ELBERT COUNTY BELOW 6000 FEET/SOUTH LINCOLN COUNTY-
WASHINGTON COUNTY-
201 PM MDT FRI APR 8 2011

...RED FLAG WARNING REMAINS IN EFFECT UNTIL 8 PM MDT THIS EVENING
FOR GUSTY WINDS AND LOW HUMIDITY FOR FIRE WEATHER ZONES 214...
216...239...240...241...245...246...247 AND 249...
...RED FLAG WARNING IN EFFECT FROM NOON TO 9 PM MDT SATURDAY FOR
GUSTY WINDS AND LOW HUMIDITY FOR FIRE WEATHER ZONES 214...216...
239...240...241...245...246...247 AND 249...

THE NATIONAL WEATHER SERVICE IN DENVER HAS ISSUED A RED FLAG
WARNING...WHICH IS IN EFFECT FROM NOON TO 9 PM MDT SATURDAY. THE
FIRE WEATHER WATCH IS NO LONGER IN EFFECT. 


* AFFECTED AREA...FIRE WEATHER ZONE 214...ELEVEN MILE CANYON 
  RESERVOIR...FAIRPLAY...GUFFEY...HARTSEL...LAKE GEORGE...SOUTH 
  PARK...FIRE WEATHER ZONE 216...BAILEY...CENTRAL CITY... 
  EVERGREEN...GEORGETOWN...IDAHO SPRINGS...NORTHERN RAMPART 
  RANGE...TARRYALL...WESTCREEK...FIRE WEATHER ZONE 239... 
  ARVADA...BOULDER...GOLDEN...LAKEWOOD...LONGMONT...FIRE 
  WEATHER ZONE 240...AURORA...BRIGHTON...CITY OF DENVER... 
  DENVER INTERNATIONAL AIRPORT...HIGHLANDS RANCH...LITTLETON... 
  PARKER...FIRE WEATHER ZONE 241...CASTLE ROCK...ELBERT... 
  FONDIS...KIOWA...LARKSPUR...FIRE WEATHER ZONE 245...BENNETT...
   BYERS...DEER TRAIL...LEADER...FIRE WEATHER ZONE 246...
  AGATE... HUGO...LIMON...MATHESON...FIRE WEATHER ZONE 247...
  FORDER... KARVAL...KUTCH...PUNKIN CENTER...FIRE WEATHER ZONE 
  249... AKRON...COPE...LAST CHANCE...OTIS. 

* TIMING...GUSTY WINDS AND LOW RELATIVE HUMIDITIES WILL CONTINUE
  INTO THIS EVENING. STRONG SOUTH TO SOUTHWEST WINDS AND LOW
  HUMIDITIES WILL REDEVELOP AGAIN SATURDAY AFTERNOON AND EVENING.

* WIND...SOUTH TO SOUTHWEST WINDS WILL BE 15 TO 25 MPH WITH GUSTS
  TO 40 MPH. WINDS ON SATURDAY WILL BE SLIGHTLY STRONGER WITH
  GUSTS TO 50 MPH.

* HUMIDITY...RELATIVE HUMIDITIES WILL BE IN THE 7 TO 15 PERCENT
  RANGE THIS AFTERNOON. ON SATURDAY HUMIDITY VALUES WITH BE
  SIMILAR WITH READINGS IN THE 7 TO 15 PERCENT RANGE.

* IMPACTS...GUSTY WINDS...LOW HUMIDITIES...AND DRY FUELS WILL 
  MAKE CONDITIONS FAVORABLE FOR NEW AND RAPID WILDFIRE GROWTH.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

COZ242>244-248-250-251-090815-
/O.UPG.KBOU.FW.A.0009.110409T1800Z-110410T0300Z/
/O.NEW.KBOU.FW.W.0014.110409T1800Z-110410T0300Z/
NORTHEAST WELD COUNTY-CENTRAL AND SOUTH WELD COUNTY-MORGAN COUNTY-
LOGAN COUNTY-SEDGWICK COUNTY-PHILLIPS COUNTY-
201 PM MDT FRI APR 8 2011

...RED FLAG WARNING IN EFFECT FROM NOON TO 9 PM MDT SATURDAY FOR
GUSTY WINDS AND LOW HUMIDITY FOR FIRE WEATHER ZONES 242...243...
244...248...250 AND 251...

THE NATIONAL WEATHER SERVICE IN DENVER HAS ISSUED A RED FLAG
WARNING...WHICH IS IN EFFECT FROM NOON TO 9 PM MDT SATURDAY. THE
FIRE WEATHER WATCH IS NO LONGER IN EFFECT. 

* AFFECTED AREA...FIRE WEATHER ZONE 242...BRIGGSDALE...EAST 
  PAWNEE GRASSLANDS...GROVER...PAWNEE BUTTES...RAYMER... 
  STONEHAM...FIRE WEATHER ZONE 243...EATON...FORT LUPTON... 
  GREELEY...ROGGEN...FIRE WEATHER ZONE 244...BRUSH...FORT 
  MORGAN...GOODRICH...WIGGINS...FIRE WEATHER ZONE 248...CROOK...
   MERINO...STERLING...PEETZ...FIRE WEATHER ZONE 250... 
  JULESBURG...OVID...SEDGWICK...FIRE WEATHER ZONE 251... 
  AMHERST...HAXTUN...HOLYOKE. 

* TIMING...BY SATURDAY AFTERNOON...WINDS WILL BECOME GUSTY AND
  RELATIVE HUMIDITIES WILL FALL BELOW 15 PERCENT. 

* WIND...SOUTHWEST WINDS WILL BE 15 TO 25 MPH WITH GUSTS TO 40 
  MPH.

* HUMIDITY...RELATIVE HUMIDITIES WILL FALL INTO THE 10 TO 15 
  PERCENT RANGE.

* IMPACTS...GUSTY WINDS...LOW HUMIDITIES...AND DRY FUELS WILL 
  MAKE CONDITIONS FAVORABLE FOR NEW AND RAPID WILDFIRE GROWTH.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$
705 
WWUS85 KBOU 090159
RFWBOU

URGENT - FIRE WEATHER MESSAGE
NATIONAL WEATHER SERVICE DENVER CO
759 PM MDT FRI APR 8 2011

.WINDS EARLY FRIDAY EVENING WERE ON THE DECREASE ACROSS NORTHEAST
AND NORTH CENTRAL COLORADO WITH HUMIDITIES RISING VERY SLOWLY.
WINDS FOR THE MOST PART WILL CONTINUE TO DECREASE THROUGH THE
REMAINDER OF FRIDAY EVENING BUT OVERNIGHT HUMIDITY RECOVERY IS
EXPECTED TO BE RATHER POOR IN THE SOUTHERN FOOTHILLS...SOUTH PARK
...ATOP THE PALMER DIVIDE AND IN THE SOUTHERN SECTIONS OF THE
DENVER METRO AREA.   

CRITICAL FIRE WEATHER CONDITIONS ARE EXPECTED ACROSS NEARLY ALL OF
NORTHEAST COLORADO AGAIN DURING THE AFTERNOON ON SATURDAY AS
STRONG SOUTH TO SOUTHWEST WINDS REDEVELOP AND RELATIVE HUMIDITIES
PLUMMET INTO THE SINGLE DIGITS AND LOW TEENS. 

COZ214-216-239>241-245>247-249-091400-
/O.EXP.KBOU.FW.W.0013.000000T0000Z-110409T0200Z/
/O.CON.KBOU.FW.W.0014.110409T1800Z-110410T0300Z/
CENTRAL AND SOUTHEAST PARK COUNTY-
JEFFERSON AND WEST DOUGLAS COUNTIES ABOVE 6000 FEET/GILPIN/CLEAR
CREEK/NORTHEAST PARK COUNTIES BELOW 9000 FEET-
BOULDER AND JEFFERSON COUNTIES BELOW 6000 FEET/WEST BROOMFIELD
COUNTY-
NORTH DOUGLAS COUNTY BELOW 6000 FEET/DENVER/WEST ADAMS AND
ARAPAHOE COUNTIES/EAST BROOMFIELD COUNTY-
ELBERT/CENTRAL AND EAST DOUGLAS COUNTIES ABOVE 6000 FEET-
CENTRAL AND EAST ADAMS AND ARAPAHOE COUNTIES-
NORTH AND NORTHEAST ELBERT COUNTY BELOW 6000 FEET/NORTH LINCOLN
COUNTY-
SOUTHEAST ELBERT COUNTY BELOW 6000 FEET/SOUTH LINCOLN COUNTY-
WASHINGTON COUNTY-
759 PM MDT FRI APR 8 2011

...RED FLAG WARNING REMAINS IN EFFECT FROM NOON TO 9 PM MDT
SATURDAY FOR GUSTY WINDS AND LOW HUMIDITY FOR FIRE WEATHER ZONES
214...216...239...240...241...245...246...247 AND 249...
...RED FLAG WARNING WILL EXPIRE AT 8 PM MDT THIS EVENING FOR
GUSTY WINDS AND LOW HUMIDITY FOR FIRE WEATHER ZONES 214...216...
239...240...241...245...246...247 AND 249...

THE RED FLAG WARNING WILL EXPIRE AT 8 PM MDT THIS EVENING. A NEW
RED FLAG WARNING WILL GO INTO EFFECT SATURDAY AT NOON...LASTING
UNTIL 9 PM.

* AFFECTED AREA...FIRE WEATHER ZONE 214...ELEVEN MILE CANYON 
  RESERVOIR...FAIRPLAY...GUFFEY...HARTSEL...LAKE GEORGE...SOUTH 
  PARK...FIRE WEATHER ZONE 216...BAILEY...CENTRAL CITY... 
  EVERGREEN...GEORGETOWN...IDAHO SPRINGS...NORTHERN RAMPART 
  RANGE...TARRYALL...WESTCREEK...FIRE WEATHER ZONE 239... 
  ARVADA...BOULDER...GOLDEN...LAKEWOOD...LONGMONT...FIRE 
  WEATHER ZONE 240...AURORA...BRIGHTON...CITY OF DENVER... 
  DENVER INTERNATIONAL AIRPORT...HIGHLANDS RANCH...LITTLETON... 
  PARKER...FIRE WEATHER ZONE 241...CASTLE ROCK...ELBERT... 
  FONDIS...KIOWA...LARKSPUR...FIRE WEATHER ZONE 245...BENNETT...
   BYERS...DEER TRAIL...LEADER...FIRE WEATHER ZONE 246...
  AGATE... HUGO...LIMON...MATHESON...FIRE WEATHER ZONE 247...
  FORDER... KARVAL...KUTCH...PUNKIN CENTER...FIRE WEATHER ZONE 
  249... AKRON...COPE...LAST CHANCE...OTIS. 

* TIMING...GUSTY WINDS AND LOW RELATIVE HUMIDITIES WILL 
  CONTINUE INTO THIS EVENING. STRONG SOUTH TO SOUTHWEST WINDS 
  AND LOW HUMIDITIES WILL REDEVELOP AGAIN SATURDAY AFTERNOON 
  AND EVENING.

* WIND...SOUTH TO SOUTHWEST WINDS WILL BE 15 TO 25 MPH WITH 
  GUSTSTO 40 MPH. WINDS ON SATURDAY WILL BE SLIGHTLY STRONGER 
  WITH GUSTS TO 50 MPH.

* HUMIDITY...RELATIVE HUMIDITIES WILL BE IN THE 7 TO 15 PERCENT 
  RANGE THIS AFTERNOON. ON SATURDAY HUMIDITY VALUES WITH BE 
  SIMILAR WITH READINGS IN THE 7 TO 15 PERCENT RANGE.

* IMPACTS...GUSTY WINDS...LOW HUMIDITIES...AND DRY FUELS WILL 
  MAKE CONDITIONS FAVORABLE FOR NEW AND RAPID WILDFIRE GROWTH.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

COZ242>244-248-250-251-091400-
/O.CON.KBOU.FW.W.0014.110409T1800Z-110410T0300Z/
NORTHEAST WELD COUNTY-CENTRAL AND SOUTH WELD COUNTY-MORGAN COUNTY-
LOGAN COUNTY-SEDGWICK COUNTY-PHILLIPS COUNTY-
759 PM MDT FRI APR 8 2011

...RED FLAG WARNING REMAINS IN EFFECT FROM NOON TO 9 PM MDT
SATURDAY FOR GUSTY WINDS AND LOW HUMIDITY FOR FIRE WEATHER ZONES
242...243...244...248...250 AND 251...

* AFFECTED AREA...FIRE WEATHER ZONE 242...BRIGGSDALE...EAST PAWNEE
  GRASSLANDS...GROVER...PAWNEE BUTTES...RAYMER... STONEHAM...FIRE
  WEATHER ZONE 243...EATON...FORT LUPTON...GREELEY...ROGGEN...FIRE
  WEATHER ZONE 244...BRUSH...FORT MORGAN...GOODRICH...WIGGINS...FIRE
  WEATHER ZONE 248...CROOK... MERINO...STERLING...PEETZ...FIRE
  WEATHER ZONE 250... JULESBURG...OVID...SEDGWICK...FIRE WEATHER
  ZONE 251... AMHERST...HAXTUN...HOLYOKE.

* TIMING...BY SATURDAY AFTERNOON...WINDS WILL BECOME GUSTY AND 
  RELATIVE HUMIDITIES WILL FALL BELOW 15 PERCENT.

* WIND...SOUTHWEST WINDS WILL BE 15 TO 25 MPH WITH GUSTS TO 40 
  MPH.

* HUMIDITY...RELATIVE HUMIDITIES WILL FALL INTO THE 10 TO 15 
  PERCENT RANGE.

* IMPACTS...GUSTY WINDS...LOW HUMIDITIES...AND DRY FUELS WILL 
  MAKE CONDITIONS FAVORABLE FOR NEW AND RAPID WILDFIRE GROWTH.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

The office that day

Everything else NWS Denver/Boulder, CO issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Apr 7, 2:47 PM MDTFire Weather WatchBOUAdams, Arapahoe, Boulder, Broomfield, Clear Creek, Denver and 12 more23 hr
Apr 7, 3:56 PM MDTSpecial Weather StatementBOUArapahoe34 min
Apr 7, 4:37 PM MDTSpecial Weather StatementBOUArapahoe23 min
Apr 7, 5:00 PM MDTSpecial Weather StatementBOUAdams30 min

Nearby

Red Flag Warnings in Colorado, 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.