Alert archive / Colorado / Red Flag Warnings in 2017
Red Flag Warning 21, NWS Denver/Boulder, CO
NWS Denver/Boulder, CO issued this red flag warning at May 15, 2017, 4:20 AM MDT for Park County, Colorado. It took effect at May 15, 2017, 12:00 PM MDT. It was in force for 7 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
- May 15, 2017, 4:20 AM MDT (10:20 UTC)
- In effect from
- May 15, 2017, 12:00 PM MDT
- Expired
- May 15, 2017, 7:00 PM MDT
- In force
- 7 hr
- Issued by
- NWS Denver/Boulder, CO
County Park County, CO
The radar
The Denver radar (KFTG), 125 km from the middle of the area, began a volume at 10:20 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 (KDEN), launched 00:00Z, 10.3 hours before the alert went out and 229 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.
- Mixed-layer CAPE
- 333 J/kg
- Mixed-layer CIN
- -27 J/kg
- Mixed-layer LCL
- 2662 m above ground
- 0-6 km bulk shear
- 60 kt
- 0-1 km storm-relative helicity
- 28 m²/s²
- 0-3 km storm-relative helicity
- 199 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.7
The text
As transmitted.
875 WWUS85 KBOU 151020 RFWBOU URGENT - FIRE WEATHER MESSAGE National Weather Service Denver/Boulder CO 420 AM MDT Mon May 15 2017 COZ214-151830- /O.NEW.KBOU.FW.W.0021.170515T1800Z-170516T0100Z/ Central and Southeast Park County- 420 AM MDT Mon May 15 2017 ...RED FLAG WARNING IN EFFECT FROM NOON TODAY TO 7 PM MDT THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR Park County... 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 7 PM MDT this evening. * Affected Area...Fire Weather Zone 214. * Timing...Critical fire weather conditions will develop this afternoon and continue through early evening hours. * Winds...South 10 to 20 mph with gusts up to 30 mph. * Relative Humidity...as low as 14 percent. * Impacts...The combination of low humidities and gusty southwest winds will result in favorable conditions for fast burning 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. && $$
2 follow-up statements
230 WWUS85 KBOU 151823 RFWBOU URGENT - FIRE WEATHER MESSAGE National Weather Service Denver/Boulder CO 1223 PM MDT Mon May 15 2017 COZ214-160100- /O.CON.KBOU.FW.W.0021.000000T0000Z-170516T0100Z/ Central and Southeast Park County- 1223 PM MDT Mon May 15 2017 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 7 PM MDT THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR PARK COUNTY... * Affected Area...Fire Weather Zone 214. * Timing...Critical fire weather conditions will develop this afternoon and continue through early evening hours. * Winds...South 10 to 20 mph with gusts up to 30 mph. * Relative Humidity...as low as 14 percent. * Impacts...The combination of low humidities and gusty southwest winds will result in favorable conditions for fast burning fires. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now....or will shortly. A combination of strong winds...low relative humidity...and warm temperatures can contribute to extreme fire behavior. && $$
255 WWUS85 KBOU 160109 RFWBOU URGENT - FIRE WEATHER MESSAGE National Weather Service Denver/Boulder CO 709 PM MDT Mon May 15 2017 COZ214-160215- /O.EXP.KBOU.FW.W.0021.000000T0000Z-170516T0100Z/ Central and Southeast Park County- 709 PM MDT Mon May 15 2017 ...RED FLAG WARNING HAS EXPIRED FOR WIND AND LOW RELATIVE HUMIDITY FOR Park County... Cooler temperatures this evening will allow for a gradual recovery in relative humidities this evening. Therefore the Red Flag Warning has been allowed to expire. $$
Nearby
Red Flag Warnings in Colorado, 2017Every 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.