Alert archive / Colorado / Red Flag Warnings in 2017
Red Flag Warning 13, NWS Denver/Boulder, CO
NWS Denver/Boulder, CO issued this red flag warning at Mar 11, 2017, 12:56 PM MST for 12 counties in Colorado. It took effect at Mar 12, 2017, 12:00 PM MDT. It was in force for 6 hr. 6 reports came from inside the area while it was in force.
The area
The counties it named, with what was reported inside it.
The facts
- Issued
- Mar 11, 2017, 12:56 PM MST (19:56 UTC)
- In effect from
- Mar 12, 2017, 12:00 PM MDT
- Expired
- Mar 12, 2017, 6:00 PM MDT
- In force
- 6 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
The radar
The Denver radar (KFTG), 36 km from the middle of the area, began a volume at 19:57 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Mar 12, 12:00 PM MDT | NON-TSTM WND GST 58 | 3 Sw Rocky Flats, CO | MESONET STATION 2 SW ROCKY FLATS /CO109/. |
| Mar 12, 12:10 PM MDT | HIGH SUST WINDS 51 | 3 Nne White Ranch Open, CO | MESONET STATION 2 NE WHITE RANCH OPEN S /UP709/. |
| Mar 12, 12:40 PM MDT | NON-TSTM WND GST 80 | 3 E Mountain View, CO | MESONET STATION 3 E MOUNTAIN VIEW /CO015/. |
| Mar 12, 12:49 PM MDT | NON-TSTM WND GST 53 | 2 Se Superior, CO | AWOS STATION JEFFCO AIRPORT /BJC/. |
| Mar 12, 2:05 PM MDT | NON-TSTM WND GST 65 | 2 Nw Strasburg, CO | |
| Mar 12, 2:11 PM MDT | NON-TSTM WND GST 61 | 3 Nne Pleasant View, CO | MESONET STATION APPLEWOOD /E7094/. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Denver, CO (KDNR), launched 12:00Z, 7.9 hours before the alert went out and 145 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
- 1651 m above ground
- 0-6 km bulk shear
- 42 kt
- 0-1 km storm-relative helicity
- 0 m²/s²
- 0-3 km storm-relative helicity
- 205 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
211 WWUS85 KBOU 111956 RFWBOU URGENT - FIRE WEATHER MESSAGE National Weather Service Denver/Boulder CO 1256 PM MST Sat Mar 11 2017 ...ANOTHER DAY WITH VERY HIGH FIRE DANGER ON SUNDAY... .Strong winds will develop on Sunday along with warmer temperatures and lower humidities. This will produce very high fire danger on Sunday afternoon. Conditions will be worst from the southern Front Range foothills across the Denver metro area and onto the plains along and south of Interstate 70. Further north it will be very windy but the humidities will be higher. COZ216-239>241-245>247-120700- /O.UPG.KBOU.FW.A.0011.170312T1800Z-170313T0000Z/ /O.NEW.KBOU.FW.W.0013.170312T1800Z-170313T0000Z/ 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- 1256 PM MST Sat Mar 11 2017 ...RED FLAG WARNING IN EFFECT FROM NOON TO 6 PM MDT SUNDAY FOR WIND AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONES 216...239... 240...241...245...246...AND 247... 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 6 PM MDT Sunday. The Fire Weather Watch is no longer in effect. * Affected Area...The southern Front Range foothills, Denver metro area, and the plains east and southeast of Denver...fire weather zones 216...239...240...241...245...246 and 247. * Timing...Winds will increase in the morning and continue through the afternoon. Relative humidity levels will reach their lowest levels by mid-afternoon. * Winds...Northwest 25 to 35 mph with gusts up to 45 mph. * Relative Humidity...as low as 14 percent. * Impacts...Very high fire danger through the afternoon hours. Conditions will be favorable for the ignition and rapid growth of wildfires. 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
3 follow-up statements
855 WWUS85 KBOU 120648 RFWBOU URGENT - FIRE WEATHER MESSAGE National Weather Service Denver/Boulder CO 1148 PM MST Sat Mar 11 2017 ...ANOTHER DAY WITH VERY HIGH FIRE DANGER ON SUNDAY... .Strong winds will develop on Sunday along with warmer temperatures and lower humidities. This will produce very high fire danger on Sunday afternoon. Conditions will be worst from the southern Front Range foothills across the Denver metro area and onto the plains along and south of Interstate 70. Further north, it will be very windy but the humidities will be higher. COZ216-239>241-245>247-121500- /O.CON.KBOU.FW.W.0013.170312T1800Z-170313T0000Z/ 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- 1148 PM MST Sat Mar 11 2017 ...RED FLAG WARNING REMAINS IN EFFECT FROM NOON TO 6 PM MDT SUNDAY FOR WIND AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONES 216...239...240...241...245...246...AND 247... * Affected Area...Fire Weather Zones 216...239...240...241... 245...246 and 247. * Timing...Winds will increase late in the morning and continue through the afternoon. Relative humidity levels will reach their lowest levels by mid-afternoon. * Winds...Northwest 25 to 35 mph with gusts up to 45 mph. * Relative Humidity...as low as 14 percent. * Impacts...Conditions will be favorable for the ignition and rapid growth of wildfires. 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. && $$
566 WWUS85 KBOU 121022 RFWBOU URGENT - FIRE WEATHER MESSAGE National Weather Service Denver/Boulder CO 422 AM MDT Sun Mar 12 2017 ...ANOTHER DAY WITH VERY HIGH FIRE DANGER... .Strong winds will develop mid to late morning along the Front Range Foothills and then spread east across all of the plains by the noon hour. The strong winds in combination with dry fuels and low humidity will produce very high fire danger. Conditions will be worst from the southern Front Range foothills across the Denver metro area and onto the plains along and south of Interstate 70. Further north, it will be very windy but the humidities will be higher. Open burning is prohibited on Red Flag Warning days. COZ216-239>241-245>247-121900- /O.CON.KBOU.FW.W.0013.170312T1800Z-170313T0000Z/ 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- 422 AM MDT Sun Mar 12 2017 ...RED FLAG WARNING REMAINS IN EFFECT FROM NOON TODAY TO 6 PM MDT THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR THE SOUTHERN FRONT RANGE FOOTHILLS...DENVER METRO AREA...AND ADJACENT PLAINS ALONG AND SOUTH OF I-70...FIRE WEATHER ZONES 216...239...240... 241...245...246...AND 247... * Affected Area...Fire Weather Zones 216...239...240...241... 245...246 and 247. * Timing...Winds will increase late in the morning and continue through the afternoon. Relative humidity levels will reach their lowest levels by mid-afternoon. * Winds...Northwest 25 to 30 mph with gusts up to 50 mph. * Relative Humidity...as low as 14 percent. * Impacts...Conditions will be favorable for the ignition and rapid growth of wildfires. Wind-driven fires will be difficult to contain. 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. && $$
532 WWUS85 KBOU 130001 RFWBOU URGENT - FIRE WEATHER MESSAGE National Weather Service Denver/Boulder CO 601 PM MDT Sun Mar 12 2017 COZ216-239>241-245>247-130115- /O.EXP.KBOU.FW.W.0013.000000T0000Z-170313T0000Z/ Jefferson and West Douglas Counties Above 6000 Feet/Gilpin/Clear Creek/Northeast Park Counties Below 9000 Feet- Boulder And Jefferson Counties Below 6000 Feet/West Broomfield County- North Douglas County Below 6000 Feet/Denver/West Adams and Arapahoe Counties/East Broomfield County- Elbert/Central and East Douglas Counties Above 6000 Feet- Central and East Adams and Arapahoe Counties- North and Northeast Elbert County Below 6000 Feet/North Lincoln County- Southeast Elbert County Below 6000 Feet/South Lincoln County- 601 PM MDT Sun Mar 12 2017 ...RED FLAG WARNING WILL EXPIRE AT 6 PM MDT THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR THE SOUTHERN FRONT RANGE FOOTHILLS...DENVER METRO AREA...AND ADJACENT PLAINS ALONG AND SOUTH OF I-70...FIRE WEATHER ZONES 216...239...240...241...245... 246...AND 247... Winds will decrease this evening along with increasing humidity so the Red Flag Warning will expire at 6 pm. $$
The office that day
Everything else NWS Denver/Boulder, CO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 11, 4:29 AM MST | Fire Weather Watch | BOU | Adams, Arapahoe, Boulder, Broomfield, Clear Creek, Denver and 6 more | 8 hr |
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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.