Alert archive / Colorado / Red Flag Warnings in 2017

Red Flag Warning 23, NWS Denver/Boulder, CO

June 26, 20174 counties in Colorado

NWS Denver/Boulder, CO issued this red flag warning at Jun 26, 2017, 3:49 PM MDT for 4 counties in Colorado. It took effect at Jun 27, 2017, 12:00 PM 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: Jun 26, 2017, 3:49 PM MDT (21:49 UTC)
In effect from: Jun 27, 2017, 12:00 PM MDT
Expired: Jun 27, 2017, 9:00 PM MDT
In force: 9 hr
Issued by: NWS Denver/Boulder, CO

Counties Grand County, CO, Jackson County, CO, Park County, CO, Summit County, CO

The radar

The Denver radar (KFTG), 131 km from the middle of the area, began a volume at 21:50 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

Grand Junction, CO (KGJT), launched 12:00Z, 9.8 hours before the alert went out and 224 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 3617 m above ground
0-6 km bulk shear: 22 kt
0-1 km storm-relative helicity: -20 m²/s²
0-3 km storm-relative helicity: 14 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

620 
WWUS85 KBOU 262149
RFWBOU

URGENT - FIRE WEATHER MESSAGE
National Weather Service Denver/Boulder CO
349 PM MDT Mon Jun 26 2017

...INCREASING FIRE DANGER ON TUESDAY...

COZ211-213-214-271200-
/O.UPG.KBOU.FW.A.0019.170627T1800Z-170628T0300Z/
/O.NEW.KBOU.FW.W.0023.170627T1800Z-170628T0300Z/
Jackson County Below 9000 Feet-
Grand and Summit Counties Below 9000 Feet-
Central and Southeast Park County-
349 PM MDT Mon Jun 26 2017

...RED FLAG WARNING IN EFFECT FROM NOON TO 9 PM MDT TUESDAY FOR
GUSTY WINDS AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONES
211...213...AND 214...

The National Weather Service in Denver has issued a Red Flag
Warning FOR WIND AND LOW RELATIVE HUMIDITY...which is in effect
from noon to 9 PM MDT Tuesday. The Fire Weather Watch is no
longer in effect.

* Affected Area...The lower elevations of Jackson and Grand
  counties and South Park...Fire Weather Zones 211...213 and 214.

* Timing...Tuesday...noon through 9 pm.

* Winds...West 10 to 20 mph with gusts up to 35 mph.

* Relative Humidity...as low as 11 percent.

* Impacts...Gusty winds and low relative humidity will result in 
  critical fire weather conditions.

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.

&&

$$

Gimmestad

4 follow-up statements

124 
WWUS85 KBOU 270245
RFWBOU

URGENT - FIRE WEATHER MESSAGE
National Weather Service Denver/Boulder CO
845 PM MDT Mon Jun 26 2017

...INCREASING FIRE DANGER ON TUESDAY...

COZ211-213-214-271045-
/O.CON.KBOU.FW.W.0023.170627T1800Z-170628T0300Z/
Jackson County Below 9000 Feet-
Grand and Summit Counties Below 9000 Feet-
Central and Southeast Park County-
845 PM MDT Mon Jun 26 2017

...RED FLAG WARNING REMAINS IN EFFECT FROM NOON TO 9 PM MDT
TUESDAY FOR GUSTY WINDS AND LOW RELATIVE HUMIDITY FOR FIRE
WEATHER ZONES 211...213...AND 214...

* Affected Area...Fire Weather Zones 211...213 and 214.

* Timing...Tuesday...noon through 9 pm.

* Winds...West 10 to 20 mph with gusts up to 35 mph.

* Relative Humidity...as low as 13 percent.

* Impacts...Gusty winds and low relative humidity will result in 
  critical fire weather conditions.

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.

&&

$$

777 
WWUS85 KBOU 271003
RFWBOU

URGENT - FIRE WEATHER MESSAGE
National Weather Service Denver/Boulder CO
403 AM MDT Tue Jun 27 2017

...INCREASING FIRE DANGER ON TODAY...

COZ211-213-214-271900-
/O.CON.KBOU.FW.W.0023.170627T1800Z-170628T0300Z/
Jackson County Below 9000 Feet-
Grand and Summit Counties Below 9000 Feet-
Central and Southeast Park County-
403 AM MDT Tue Jun 27 2017

...RED FLAG WARNING REMAINS IN EFFECT FROM NOON TODAY TO 9 PM MDT
THIS EVENING FOR GUSTY WINDS AND LOW RELATIVE HUMIDITY FOR FIRE
WEATHER ZONES 211...213...AND 214...

* Affected Area...Fire Weather Zones 211...213 and 214.

* Timing...noon through 9 pm today.

* Winds...West 15 to 25 mph with gusts up to 40 mph.

* Relative Humidity...10 to 15 percent.

* Impacts...Gusty winds and low relative humidity will result in 
  critical fire weather conditions.

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.

&&

$$

370 
WWUS85 KBOU 272211
RFWBOU

URGENT - FIRE WEATHER MESSAGE
National Weather Service Denver/Boulder CO
411 PM MDT Tue Jun 27 2017


COZ211-213-214-280300-
/O.CON.KBOU.FW.W.0023.000000T0000Z-170628T0300Z/
Jackson County Below 9000 Feet-
Grand and Summit Counties Below 9000 Feet-
Central and Southeast Park County-
411 PM MDT Tue Jun 27 2017

...RED FLAG WARNING REMAINS IN EFFECT UNTIL 9 PM MDT THIS EVENING
FOR GUSTY WINDS AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONES
211...213...AND 214...

* Affected Area...Fire Weather Zones 211...213 and 214.

* Timing...through 9 pm tHIS EVENING.

* Winds...West 15 to 25 mph with gusts up to 35 mph.

* Relative Humidity...as low as 12 percent.

* Impacts...Gusty winds and low relative humidity will result in 
  critical fire weather conditions.

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.

&&

$$

766 
WWUS85 KBOU 280300
RFWBOU

URGENT - FIRE WEATHER MESSAGE
National Weather Service Denver/Boulder CO
900 PM MDT Tue Jun 27 2017


COZ211-213-214-280400-
/O.EXP.KBOU.FW.W.0023.000000T0000Z-170628T0300Z/
Jackson County Below 9000 Feet-
Grand and Summit Counties Below 9000 Feet-
Central and Southeast Park County-
900 PM MDT Tue Jun 27 2017

...RED FLAG WARNING HAS EXPIRED FOR GUSTY WINDS AND LOW RELATIVE
HUMIDITY FOR FIRE WEATHER ZONES 211...213...AND 214...


$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 26, 3:10 AM MDT	Fire Weather Watch	BOU	Grand, Jackson, Park, Summit	13 hr

Nearby

Red Flag Warnings in Colorado, 2017 Every red flag warning in 2017

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.