Alert archive / Colorado / Red Flag Warnings in 2018
Red Flag Warning 3, NWS Denver/Boulder, CO
NWS Denver/Boulder, CO issued this red flag warning at Feb 27, 2018, 11:09 AM MST for 4 counties in Colorado. It took effect at Feb 27, 2018, 12:13 PM MST. It was in force for 107 min. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Feb 27, 2018, 11:09 AM MST (18:09 UTC)
- In effect from
- Feb 27, 2018, 12:13 PM MST
- Expired
- Feb 27, 2018, 2:00 PM MST
- In force
- 107 min
- Issued by
- NWS Denver/Boulder, CO
Counties Arapahoe County, CO, Douglas County, CO, Elbert County, CO, Lincoln County, CO
The radar
The Denver radar (KFTG), 59 km from the middle of the area, began a volume at 18:12 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 12:00Z, 6.2 hours before the alert went out and 106 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 2911 m above ground
- 0-6 km bulk shear
- 35 kt
- 0-1 km storm-relative helicity
- 143 m²/s²
- 0-3 km storm-relative helicity
- 128 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
378 WWUS85 KBOU 271809 RFWBOU URGENT - FIRE WEATHER MESSAGE National Weather Service Denver/Boulder CO 1109 AM MST Tue Feb 27 2018 COZ241-246-247-272100- /O.CAN.KBOU.FW.W.0002.180228T1800Z-180228T2100Z/ /O.NEW.KBOU.FW.W.0003.180227T1809Z-180227T2100Z/ 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- 1109 AM MST Tue Feb 27 2018 ...RED FLAG WARNING IN EFFECT UNTIL 2 PM MST THIS AFTERNOON FOR WIND AND LOW RELATIVE HUMIDITY FOR PORTIONS OF EASTERN ELBERT AND LINCOLN COUNTY... The National Weather Service in Denver has issued a Red Flag Warning FOR WIND AND LOW RELATIVE HUMIDITY, which is in effect until 2 PM MST this afternoon. The Red Flag Warning has been cancelled. * Affected Area...Fire Weather Zones 241 Elbert County...246 and 247 in Lincoln County. * Timing...Now until 2 pm this afternoon * Winds...Northwest 10 to 20 mph with gusts up to 30 mph. * Relative Humidity...As low as 8 percent. * Impacts...Any fires that start will have extreme fire behavior and spread rapidly. Outdoor burning is not advised. 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. && $$
2 follow-up statements
795 WWUS85 KBOU 271913 CCA RFWBOU URGENT - FIRE WEATHER MESSAGE...CORRECTED National Weather Service Denver/Boulder CO 1213 PM MST Tue Feb 27 2018 COZ241-246-247-272100- /O.CAN.KBOU.FW.W.0002.180228T1800Z-180228T2100Z/ /O.COR.KBOU.FW.W.0003.180227T1913Z-180227T2100Z/ Elbert/Central and East Douglas Counties Above 6000 Feet- North and Northeast Elbert County Below 6000 Feet/North Lincoln County- Southeast Elbert County Below 6000 Feet/South Lincoln County- 1213 PM MST Tue Feb 27 2018 ...RED FLAG WARNING IN EFFECT UNTIL 2 PM MST THIS AFTERNOON FOR WIND AND LOW RELATIVE HUMIDITY FOR PORTIONS OF EASTERN ELBERT AND LINCOLN COUNTY... The National Weather Service in Denver has issued a Red Flag Warning FOR WIND AND LOW RELATIVE HUMIDITY, which is in effect until 2 PM MST this afternoon. * Affected Area...Fire Weather Zones 241 Elbert County...246 and 247 in Lincoln County. * Timing...Now until 2 pm this afternoon * Winds...Northwest 10 to 20 mph with gusts up to 30 mph. * Relative Humidity...As low as 8 percent. * Impacts...Any fires that start will have extreme fire behavior and spread rapidly. Outdoor burning is not advised. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now....or will shortly. A combination of strong winds...low relative humidity...and warm temperatures can contribute to extreme fire behavior. && $$
179 WWUS85 KBOU 272056 RFWBOU URGENT - FIRE WEATHER MESSAGE National Weather Service Denver/Boulder CO 156 PM MST Tue Feb 27 2018 COZ241-246-247-272200- /O.EXP.KBOU.FW.W.0003.000000T0000Z-180227T2100Z/ 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- 156 PM MST Tue Feb 27 2018 ...RED FLAG WARNING WILL EXPIRE AT 2 PM MST THIS AFTERNOON FOR WIND AND LOW RELATIVE HUMIDITY FOR PORTIONS OF EASTERN ELBERT AND LINCOLN COUNTY... Winds will continue to slowly decrease this afternoon with some gusts still up to 22 mph through late afternoon. Humidities will slowly recover through the evening hours. $$
The office that day
Everything else NWS Denver/Boulder, CO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Feb 27, 11:04 AM MST | Red Flag Warning | BOU | Arapahoe, Douglas, Elbert, Lincoln | 5 min |
Nearby
Red Flag Warnings in Colorado, 2018Every red flag warning in 2018
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.