Alert archive / Colorado / Red Flag Warnings in 2013

Red Flag Warning 13, NWS Denver/Boulder, CO

June 24, 201310 counties in Colorado

NWS Denver/Boulder, CO issued this red flag warning at Jun 24, 2013, 5:01 AM MDT for 10 counties in Colorado. It took effect at Jun 24, 2013, 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: Jun 24, 2013, 5:01 AM MDT (11:01 UTC)
In effect from: Jun 24, 2013, 12:00 PM MDT
Expired: Jun 24, 2013, 8:00 PM MDT
In force: 8 hr
Issued by: NWS Denver/Boulder, CO

Counties Arapahoe County, CO, Clear Creek County, CO, Douglas County, CO, Elbert County, CO, Gilpin County, CO, Grand County, CO, Jefferson County, CO, Lincoln County, CO, Park County, CO, Summit County, CO

The radar

The Denver radar (KFTG), 58 km from the middle of the area, began a volume at 11:01 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 00:00Z, 11.0 hours before the alert went out and 167 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 73 J/kg
Mixed-layer CIN: -56 J/kg
Mixed-layer LCL: 3153 m above ground
0-6 km bulk shear: 19 kt
0-1 km storm-relative helicity: -2 m²/s²
0-3 km storm-relative helicity: 79 m²/s²
Significant tornado parameter: 0.0
Supercell composite: -0.1

Open this sounding in Storm Lab

The text

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

921 
WWUS85 KBOU 241101
RFWBOU

URGENT - FIRE WEATHER MESSAGE
NATIONAL WEATHER SERVICE DENVER CO
501 AM MDT MON JUN 24 2013

COZ213-214-241-241915-
/O.UPG.KBOU.FW.A.0006.130624T1900Z-130625T0200Z/
/O.NEW.KBOU.FW.W.0013.130624T1800Z-130625T0200Z/
GRAND AND SUMMIT COUNTIES BELOW 9000 FEET-
CENTRAL AND SOUTHEAST PARK COUNTY-
ELBERT/CENTRAL AND EAST DOUGLAS COUNTIES ABOVE 6000 FEET-
501 AM MDT MON JUN 24 2013

...RED FLAG WARNING IN EFFECT FROM NOON TODAY TO 8 PM MDT THIS
EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR MOUNTAIN VALLEYS OF
PARK AND GRAND COUNTIES AND ACROSS PALMER DIVIDE....

THE NATIONAL WEATHER SERVICE IN DENVER HAS ISSUED A RED FLAG
WARNING FOR WIND AND LOW RELATIVE HUMIDITY...WHICH IS IN EFFECT
FROM NOON TODAY TO 8 PM MDT THIS EVENING. THE FIRE WEATHER WATCH
IS NO LONGER IN EFFECT.

* AFFECTED AREA...FIRE WEATHER ZONES 213...214 AND 241.

* TIMING...MONDAY AFTERNOON AND EVENING.

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

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

* IMPACTS...GUSTY WINDS AND LOW RELATIVE HUMIDITY WILL 
  POTENTIALLY CAUSE RAPID FIRE GROWTH OR EXTREME FIRE BEHAVIOR 
  OF ANY EXISTING OR NEW FIRES. 

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.

&&

$$

3 follow-up statements

601 
WWUS85 KBOU 241544
RFWBOU

URGENT - FIRE WEATHER MESSAGE
NATIONAL WEATHER SERVICE DENVER CO
944 AM MDT MON JUN 24 2013

GUSTY WEST TO SOUTHWEST WINDS WILL DEVELOP EARLY THIS 
AFTERNOON FOLLOWING THE PASSAGE OF A WEAK UPPER LEVEL 
LOW PRESSURE TROUGH. IN ADDITION...CLOUDS WILL DECREASE AND
TEMPERATURES WILL RISE CAUSING RELATIVE HUMIDITIES TO FALL 
THROUGH THE AFTERNOON.

COZ216-246-247-242345-
/O.EXA.KBOU.FW.W.0013.130624T1800Z-130625T0200Z/
JEFFERSON AND WEST DOUGLAS COUNTIES ABOVE 6000 FEET/GILPIN/CLEAR
CREEK/NORTHEAST PARK COUNTIES BELOW 9000 FEET-
NORTH AND NORTHEAST ELBERT COUNTY BELOW 6000 FEET/NORTH LINCOLN
COUNTY-
SOUTHEAST ELBERT COUNTY BELOW 6000 FEET/SOUTH LINCOLN COUNTY-
944 AM MDT MON JUN 24 2013

...RED FLAG WARNING FROM 12 PM TODAY TO 8 PM MDT THIS EVENING FOR
STRONG GUSTY WINDS AND LOW RELATIVE HUMIDITY FOR THE SOUTHERN
FRONT RANGE FOOTHILLS...AND FOR EASTERN ELBERT AND LINCOLN
COUNTIES...

THE NATIONAL WEATHER SERVICE IN DENVER HAS ISSUED A RED FLAG
WARNING FOR WIND AND LOW RELATIVE HUMIDITY...WHICH IS IN EFFECT
UNTIL 8 PM MDT THIS EVENING.

* AFFECTED AREA...FIRE WEATHER ZONES 216...246 AND 247.

* TIMING...MONDAY AFTERNOON AND EVENING.

* WINDS...SOUTHWEST 15 TO 20 MPH WITH GUSTS TO AROUND 30 MPH.

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

* IMPACTS...GUSTY WINDS AND LOW RELATIVE HUMIDITY WILL 
  POTENTIALLY CAUSE RAPID FIRE GROWTH OR EXTREME FIRE BEHAVIOR 
  OF ANY EXISTING OR NEW FIRES. 

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.

&&

$$

COZ213-214-241-242345-
/O.CON.KBOU.FW.W.0013.130624T1800Z-130625T0200Z/
GRAND AND SUMMIT COUNTIES BELOW 9000 FEET-
CENTRAL AND SOUTHEAST PARK COUNTY-
ELBERT/CENTRAL AND EAST DOUGLAS COUNTIES ABOVE 6000 FEET-
944 AM MDT MON JUN 24 2013

...RED FLAG WARNING FROM 12 PM TODAY TO 8 PM MDT THIS EVENING FOR
GUSTY WINDS AND LOW RELATIVE HUMIDITY FOR THE MOUNTAIN VALLEYS OF
PARK AND GRAND COUNTIES AND ACROSS WESTERN PORTIONS OF THE PALMER
DIVIDE....

* AFFECTED AREA...FIRE WEATHER ZONES 213...214 AND 241.

* TIMING...MONDAY AFTERNOON AND EVENING.

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

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

* IMPACTS...STRONG GUSTY WINDS AND LOW RELATIVE HUMIDITY WILL 
  POTENTIALLY CAUSE RAPID FIRE GROWTH OR EXTREME FIRE BEHAVIOR 
  OF ANY EXISTING OR NEW FIRES. 

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.

&&

$$
BAKER

748 
WWUS85 KBOU 242032
RFWBOU

URGENT - FIRE WEATHER MESSAGE
NATIONAL WEATHER SERVICE DENVER CO
232 PM MDT MON JUN 24 2013

STRONG AND ERRATIC CHINOOK WINDS ARE LIKELY TO DEVELOP IN THE
FRONT RANGE FOOTHILLS OF NORTHERN COLORADO OVERNIGHT. THESE 
GUSTY DOWNSLOPE WINDS OF 25 TO 40 MPH ARE EXPECTED IN THE
FOOTHILLS...WITH HIGHER GUSTS POSSIBLE ON THE MOUNTAIN TOPS. ALSO
ANTICIPATE POOR RELATIVE HUMIDITY RECOVERY OVERNIGHT WITH MINIMUM
RELATIVE HUMIDITY VALUES RANGING FROM 15 TO 25 PERCENT. CONDITIONS
ARE EXPECTED TO IMPROVE BY MORNING WITH WIND SPEEDS ON THE
DECREASE.

COZ216-250445-
/O.NEW.KBOU.FW.W.0014.130625T0300Z-130625T1200Z/
/O.CON.KBOU.FW.W.0013.000000T0000Z-130625T0200Z/
JEFFERSON AND WEST DOUGLAS COUNTIES ABOVE 6000 FEET/GILPIN/CLEAR
CREEK/NORTHEAST PARK COUNTIES BELOW 9000 FEET-
232 PM MDT MON JUN 24 2013

...RED FLAG WARNING REMAINS IN EFFECT UNTIL 8 PM MDT THIS EVENING
FOR GUSTY WINDS AND LOW RELATIVE HUMIDITY FOR THE SOUTHERN FRONT
RANGE FOOTHILLS IN NORTHERN COLORADO.

...RED FLAG WARNING IN EFFECT FROM 9 PM THIS EVENING TO 6 AM MDT
TUESDAY FOR GUSTY CHINOOK WINDS AND LOW RELATIVE HUMIDITY FOR THE
SOUTHERN FRONT RANGE FOOTHILLS IN NORTHERN COLORADO...

THE NATIONAL WEATHER SERVICE IN DENVER HAS ISSUED A RED FLAG
WARNING FOR GUSTY CHINOOK WINDS AND LOW RELATIVE HUMIDITY...WHICH
IS IN EFFECT FROM 9 PM THIS EVENING TO 6 AM MDT TUESDAY.

* AFFECTED AREA...FIRE WEATHER ZONE 216.

* TIMING...REST OF THIS AFTERNOON AND OVERNIGHT.

* WINDS...WEST TO SOUTHWEST 15 TO 25 MPH WITH GUSTS UP TO AROUND
  35 MPH. THE STRONGER GUSTS EXPECTED OVERNIGHT. 

* RELATIVE HUMIDITY...AS LOW AS 10 TO 15 PERCENT.

* IMPACTS...GUSTY WINDS AND LOW RELATIVE HUMIDITY WILL 
  POTENTIALLY CAUSE RAPID FIRE GROWTH OR EXTREME FIRE BEHAVIOR 
  OF ANY EXISTING OR NEW FIRES. 

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.

&&

$$

COZ215-250445-
/O.NEW.KBOU.FW.W.0014.130625T0300Z-130625T1200Z/
LARIMER AND BOULDER COUNTIES BETWEEN 6000 AND 9000 FEET-
232 PM MDT MON JUN 24 2013

...RED FLAG WARNING IN EFFECT FROM 9 PM THIS EVENING TO 6 AM MDT
TUESDAY FOR GUSTY CHINOOK WINDS AND LOW RELATIVE HUMIDITY FOR THE
FRONT RANGE FOOTHILLS IN NORTHERN COLORADO...

THE NATIONAL WEATHER SERVICE IN DENVER HAS ISSUED A RED FLAG
WARNING FOR GUSTY CHINOOK WINDS AND LOW RELATIVE HUMIDITY...WHICH
IS IN EFFECT FROM 9 PM THIS EVENING TO 6 AM MDT TUESDAY.

* AFFECTED AREA...FIRE WEATHER ZONE 215.

* TIMING...OVERNIGHT FROM 9 PM THIS EVENING TO 6 AM MDT TUESDAY 
  MORNING.

* WINDS...WEST 15 TO 25 MPH WITH GUSTS TO AROUND 40 MPH.

* RELATIVE HUMIDITY...AS LOW AS 12 PERCENT.

* IMPACTS...WARM AND DRY CHINOOK WINDS OVERNIGHT WILL RESULT IN
  POOR RELATIVE HUMIDITY RECOVERY. THESE CONDITIONS WILL 
  POTENTIALLY CAUSE RAPID FIRE GROWTH OR EXTREME FIRE BEHAVIOR 
  OF ANY EXISTING OR NEW FIRES.  
 

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.

&&

$$

COZ213-214-241-246-247-250200-
/O.CON.KBOU.FW.W.0013.000000T0000Z-130625T0200Z/
GRAND AND SUMMIT COUNTIES BELOW 9000 FEET-
CENTRAL AND SOUTHEAST PARK COUNTY-
ELBERT/CENTRAL AND EAST DOUGLAS COUNTIES ABOVE 6000 FEET-
NORTH AND NORTHEAST ELBERT COUNTY BELOW 6000 FEET/NORTH LINCOLN
COUNTY-
SOUTHEAST ELBERT COUNTY BELOW 6000 FEET/SOUTH LINCOLN COUNTY-
232 PM MDT MON JUN 24 2013

...RED FLAG WARNING REMAINS IN EFFECT UNTIL 8 PM MDT THIS EVENING
FOR GUSTY WINDS AND LOW RELATIVE HUMIDITY FOR MIDDLE AND NORTH
PARK...AND THE PALMER DIVIDE EAST TO LINCOLN COUNTY.

* AFFECTED AREA...FIRE WEATHER ZONES 213...214...241...246 AND 
  247.

* TIMING...MONDAY AFTERNOON AND EVENING.

* WINDS...SOUTHWEST 15 TO 20 MPH WITH GUSTS UP TO 35 MPH.

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

* IMPACTS...STRONG GUSTY WINDS AND LOW RELATIVE HUMIDITY WILL 
  POTENTIALLY CAUSE RAPID FIRE GROWTH OR EXTREME FIRE BEHAVIOR 
  OF ANY EXISTING OR NEW FIRES. 

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.

&&

$$
BAKER

571 
WWUS85 KBOU 250212
RFWBOU

URGENT - FIRE WEATHER MESSAGE
NATIONAL WEATHER SERVICE DENVER CO
812 PM MDT MON JUN 24 2013

DOWNSLOPE WINDS OF 15 TO 25 MPH WITH GUSTS TO 40 MPH ARE POSSIBLE
OVER THE HIGHER EXPOSED AREAS IN THE FOOTHILLS. ALSO ANTICIPATE
POOR RELATIVE HUMIDITY RECOVERY OVERNIGHT WITH MINIMUM RELATIVE
HUMIDITY VALUES RANGING FROM 15 TO 25 PERCENT. CONDITIONS ARE
EXPECTED TO IMPROVE BY MORNING WITH WIND SPEEDS ON THE DECREASE.

COZ216-251200-
/O.EXP.KBOU.FW.W.0013.000000T0000Z-130625T0200Z/
/O.CON.KBOU.FW.W.0014.130625T0300Z-130625T1200Z/
JEFFERSON AND WEST DOUGLAS COUNTIES ABOVE 6000 FEET/GILPIN/CLEAR
CREEK/NORTHEAST PARK COUNTIES BELOW 9000 FEET-
812 PM MDT MON JUN 24 2013

...RED FLAG WARNING REMAINS IN EFFECT UNTIL 6 AM MDT TUESDAY FOR
GUSTY WINDS AND LOW RELATIVE HUMIDITY FOR THE SOUTHERN FRONT
RANGE FOOTHILLS...

* AFFECTED AREA...FIRE WEATHER ZONE 216.

* TIMING...OVERNIGHT FROM 9 PM THIS EVENING TO 6 AM MDT TUESDAY
  MORNING.

* WINDS...WEST 10 TO 20 MPH WITH GUSTS UP TO 35 MPH.

* RELATIVE HUMIDITY...WILL RANGE FROM 10 TO 25 PERCENT OVERNIGHT.

* IMPACTS...GUSTY WINDS AND LOW RELATIVE HUMIDITY WILL 
  POTENTIALLY CAUSE RAPID FIRE GROWTH OR EXTREME FIRE BEHAVIOR 
  OF ANY EXISTING OR NEW FIRES. 

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.

&&

$$

COZ213-214-241-246-247-250315-
/O.EXP.KBOU.FW.W.0013.000000T0000Z-130625T0200Z/
GRAND AND SUMMIT COUNTIES BELOW 9000 FEET-
CENTRAL AND SOUTHEAST PARK COUNTY-
ELBERT/CENTRAL AND EAST DOUGLAS COUNTIES ABOVE 6000 FEET-
NORTH AND NORTHEAST ELBERT COUNTY BELOW 6000 FEET/NORTH LINCOLN
COUNTY-
SOUTHEAST ELBERT COUNTY BELOW 6000 FEET/SOUTH LINCOLN COUNTY-
812 PM MDT MON JUN 24 2013

...RED FLAG WARNING HAS EXPIRED FOR GUSTY WINDS AND LOW RELATIVE
HUMIDITY FOR MIDDLE AND NORTH PARK...THE PALMER DIVIDE EAST TO
LINCOLN COUNTY...

WINDS WILL CONTINUE TO DECREASE AND RELATIVE HUMIDITY WILL
INCREASE THROUGH THE NIGHT. THEREFORE THE RED FLAG WARNING HAS
BEEN ALLOWED TO EXPIRE.

$$

COZ215-251200-
/O.CON.KBOU.FW.W.0014.130625T0300Z-130625T1200Z/
LARIMER AND BOULDER COUNTIES BETWEEN 6000 AND 9000 FEET-
812 PM MDT MON JUN 24 2013

...RED FLAG WARNING REMAINS IN EFFECT UNTIL 6 AM MDT TUESDAY FOR
GUSTY WINDS AND LOW RELATIVE HUMIDITY FOR THE FRONT RANGE
FOOTHILLS IN NORTHERN COLORADO...

* AFFECTED AREA...FIRE WEATHER ZONE 215.

* TIMING...OVERNIGHT FROM 9 PM THIS EVENING TO 6 AM MDT TUESDAY 
  MORNING. 

* WINDS...WEST 10 TO 20 MPH WITH GUSTS UP TO 35 MPH.

* RELATIVE HUMIDITY...WILL RANGE FROM 10 TO 25 PERCENT OVERNIGHT.

* IMPACTS...WARM AND DRY WINDS OVERNIGHT WILL RESULT IN POOR
  RELATIVE HUMIDITY RECOVERY. THESE CONDITIONS WILL POTENTIALLY
  CAUSE RAPID FIRE GROWTH OR EXTREME FIRE BEHAVIOR OF ANY EXISTING
  OR NEW FIRES.

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.

&&

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 23, 6:12 PM MDT	Severe Thunderstorm Warning	BOU	Adams, Arapahoe	33 min
Jun 23, 6:44 PM MDT	Severe Thunderstorm Warning	BOU	Adams, Arapahoe	31 min
Jun 23, 7:15 PM MDT	Tornado Warning	BOU	Adams, Washington	30 min
Jun 23, 7:17 PM MDT	Severe Thunderstorm Warning	BOU	Arapahoe	28 min
Jun 23, 7:46 PM MDT	Severe Thunderstorm Warning	BOU	Arapahoe	29 min
Jun 23, 8:10 PM MDT	Severe Thunderstorm Warning	BOU	Washington	35 min
Jun 23, 8:25 PM MDT	Tornado Warning	BOU	Washington	35 min
Jun 23, 8:40 PM MDT	Severe Thunderstorm Warning	BOU	Washington	35 min
Jun 23, 9:00 PM MDT	Severe Thunderstorm Warning	BOU	Washington	30 min
Jun 23, 9:07 PM MDT	Special Weather Statement	BOU	Denver	23 min
Jun 23, 9:29 PM MDT	Severe Thunderstorm Warning	BOU	Washington	31 min
Jun 23, 10:07 PM MDT	Severe Thunderstorm Warning	BOU	Washington	38 min
Jun 23, 10:14 PM MDT	Severe Thunderstorm Warning	BOU	Adams, Morgan, Weld	46 min
Jun 24, 1:30 AM MDT	Severe Thunderstorm Warning	BOU	Adams, Arapahoe	45 min
Jun 24, 2:32 PM MDT	Red Flag Warning	BOU	Boulder, Clear Creek, Douglas, Gilpin, Jefferson, Larimer and 1 more	27 hr

Nearby

Red Flag Warnings in Colorado, 2013 Every red flag warning in 2013

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.