Alert archive / Colorado / Red Flag Warnings in 2020
Red Flag Warning 39, NWS Denver/Boulder, CO
NWS Denver/Boulder, CO issued this red flag warning at Oct 23, 2020, 3:37 AM MDT for 12 counties in Colorado. It took effect at Oct 23, 2020, 12:00 PM MDT. It was in force for 31 hr. 10 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
- Oct 23, 2020, 3:37 AM MDT (09:37 UTC)
- In effect from
- Oct 23, 2020, 12:00 PM MDT
- Expired
- Oct 24, 2020, 7:00 PM MDT
- In force
- 31 hr
- Issued by
- NWS Denver/Boulder, CO
Counties Arapahoe County, CO, Boulder County, CO, Clear Creek County, CO, Douglas County, CO, Elbert County, CO, Gilpin County, CO, Grand County, CO, Jackson County, CO, Jefferson County, CO, Larimer County, CO, Park County, CO, Summit County, CO
The radar
The Denver radar (KFTG), 74 km from the middle of the area, began a volume at 09:42 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 |
|---|---|---|---|
| Oct 23, 11:35 PM MDT | NON-TSTM WND GST 71 | 1 Ene Berthoud Pass, CO | AWOS STATION K0CO BERTHOUD PASS. |
| Oct 24, 2:59 AM MDT | NON-TSTM WND GST 80 | 1 N Georgetown, CO | MESONET STATION CO162 0.85 MI E OF 15TH ST GEORGETOWN. |
| Oct 24, 3:18 AM MDT | NON-TSTM WND GST 60 | 2 Nne Ward, CO | MESONET STATION CW5038 WARD. |
| Oct 24, 4:16 AM MDT | NON-TSTM WND GST 58 | 2 Ene Dumont, CO | MESONET STATION EW1312 CENTRAL CITY / IDAHO SPGS. |
| Oct 24, 4:32 AM MDT | NON-TSTM WND GST 75 | 5 W Red Feather Lakes, CO | MESONET STATION ANBC1 IRAWS 32. |
| Oct 24, 4:33 AM MDT | NON-TSTM WND GST 60 | 6 Nne Cameron Pass, CO | MESONET STATION TT041 IRAWS 35. |
| Oct 24, 6:35 AM MDT | NON-TSTM WND GST 107 | 1 S Copper Mountain, CO | AWOS STATION KCCU RED CLIFF PASS. |
| Oct 24, 7:50 AM MDT | NON-TSTM WND GST 58 | 1 Ne Crisman, CO | MESONET STATION EW4338 BOULDER. |
| Oct 24, 9:35 AM MDT | NON-TSTM WND GST 78 | 1 Ene Berthoud Pass, CO | AWOS STATION K0CO BERTHOUD PASS. |
| Oct 24, 12:19 PM MDT | NON-TSTM WND GST 65 | 1 Wnw Frisco, CO | MESONET STATION CO153 0.9 MI W OF CO-9 FRISCO. |
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 00:00Z, 9.6 hours before the alert went out and 186 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
- 775 m above ground
- 0-6 km bulk shear
- 70 kt
- 0-1 km storm-relative helicity
- -20 m²/s²
- 0-3 km storm-relative helicity
- 209 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
878 WWUS85 KBOU 230937 RFWBOU URGENT - FIRE WEATHER MESSAGE National Weather Service Denver/Boulder CO 337 AM MDT Fri Oct 23 2020 ...RED FLAG WARNING IN EFFECT FROM NOON TODAY TO 7 PM MDT SATURDAY FOR WIND AND LOW RELATIVE HUMIDITY FOR THE MOUNTAINS AND MOUNTAINS VALLEYS, FIRE WEATHER ZONES, 211, 212, 213, 214, 217, AND 218... ...RED FLAG WARNING IN EFFECT FROM MIDNIGHT TONIGHT TO 7 PM MDT SATURDAY FOR WIND AND LOW RELATIVE HUMIDITY FOR THE NORTHERN FOOTHILLS, FIRE WEATHER ZONE 215... Winds will begin to increase again this afternoon and especially tonight and Saturday. Wind gusts will likely increase to around 40 mph in the valleys by Saturday, with gusts up to 60 mph or more over the mountains and northern foothills. Relative humidities will plummet into the teens today across the mountains and valleys. Relative humidity slowly increases overnight, but recoveries will be poor. The existing fires burning in heavy fuels may lead to considerable additional growth today through Saturday. COZ211>214-217-218-232200- /O.UPG.KBOU.FW.A.0024.201023T1800Z-201025T0100Z/ /O.NEW.KBOU.FW.W.0039.201023T1800Z-201025T0100Z/ Jackson County Below 9000 Feet- South and Southeast Grand/West Central and Southwest Boulder/ Gilpin/Clear Creek/Summit/North and West Park Counties Above 9000 Feet-Grand and Summit Counties Below 9000 Feet- Central and Southeast Park County- West Jackson and West Grand Counties Above 9000 Feet- South and East Jackson/Larimer/North and Northeast Grand/ Northwest Boulder Counties Above 9000 Feet- 337 AM MDT Fri Oct 23 2020 ...RED FLAG WARNING IN EFFECT FROM NOON TODAY TO 7 PM MDT SATURDAY FOR WIND AND LOW RELATIVE HUMIDITY FOR THE MOUNTAINS AND MOUNTAINS VALLEYS, FIRE WEATHER ZONES, 211, 212, 213, 214, 217, AND 218... 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 Saturday. The Fire Weather Watch is no longer in effect. * Affected Area...Fire Weather Zones 211, 212, 213, 214, 217, and 218. * Timing...Winds will increase Friday afternoon and become stronger Friday night and Saturday. * Winds...West 20 to 30 mph with gusts up to 60 mph. * Relative Humidity...As low as 12 percent. * Impacts...Ongoing drought conditions combined with strong winds and low relative humidity mean conditions are prime for rapid fire growth. 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. && $$ COZ215-232200- /O.UPG.KBOU.FW.A.0024.201024T0600Z-201025T0100Z/ /O.NEW.KBOU.FW.W.0039.201024T0600Z-201025T0100Z/ Larimer and Boulder Counties Between 6000 and 9000 Feet- 337 AM MDT Fri Oct 23 2020 ...RED FLAG WARNING IN EFFECT FROM MIDNIGHT TONIGHT TO 7 PM MDT SATURDAY FOR WIND AND LOW RELATIVE HUMIDITY FOR THE NORTHERN FOOTHILLS, FIRE WEATHER ZONE 215... The National Weather Service in Denver has issued a Red Flag Warning for wind and low relative humidity, which is in effect from midnight tonight to 7 PM MDT Saturday. The Fire Weather Watch is no longer in effect. * Affected Area...Fire Weather Zone 215. * Timing...Winds are expected to increase late tonight and Saturday. Higher elevations above 7500 feet should see the strongest winds. * Winds...West 20 to 30 mph with gusts up to 60 mph. * Relative Humidity...As low as 25 percent. * Impacts...Ongoing drought conditions combined with strong winds mean conditions are prime for rapid fire growth. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now....or will shortly. A combination of strong winds...low relative humidity...and warm temperatures can contribute to extreme fire behavior. && $$
4 follow-up statements
571 WWUS85 KBOU 231823 RFWBOU URGENT - FIRE WEATHER MESSAGE National Weather Service Denver/Boulder CO 1223 PM MDT Fri Oct 23 2020 ...RED FLAG WARNING IN EFFECT FROM NOON TODAY TO 7 PM MDT SATURDAY FOR WIND AND LOW RELATIVE HUMIDITY FOR THE MOUNTAINS AND MOUNTAINS VALLEYS, FIRE WEATHER ZONES, 211, 212, 213, 214, 217, AND 218... ...RED FLAG WARNING IN EFFECT FROM MIDNIGHT TONIGHT TO 7 PM MDT SATURDAY FOR WIND AND LOW RELATIVE HUMIDITY FOR THE NORTHERN FOOTHILLS, FIRE WEATHER ZONE 215... Winds will begin to increase again this afternoon and especially tonight and Saturday. Wind gusts will likely increase to around 40 mph in the valleys by Saturday, with gusts up to 60 mph or more over the mountains and higher foothills. Relative humidities will drop into the teens to lower 20s percent range today across the mountains and valleys. Relative humidity slowly increases overnight, but recoveries will be poor to moderate. The existing fires burning in heavy fuels may lead to considerable additional growth through Saturday. COZ211>214-217-218-240230- /O.CON.KBOU.FW.W.0039.000000T0000Z-201025T0100Z/ Jackson County Below 9000 Feet- South and Southeast Grand/West Central and Southwest Boulder/ Gilpin/Clear Creek/Summit/North and West Park Counties Above 9000 Feet-Grand and Summit Counties Below 9000 Feet- Central and Southeast Park County- West Jackson and West Grand Counties Above 9000 Feet- South and East Jackson/Larimer/North and Northeast Grand/ Northwest Boulder Counties Above 9000 Feet- 1223 PM MDT Fri Oct 23 2020 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 7 PM MDT SATURDAY FOR WIND AND LOW RELATIVE HUMIDITY FOR THE MOUNTAINS AND MOUNTAINS VALLEYS, FIRE WEATHER ZONES, 211, 212, 213, 214, 217, AND 218... * Affected Area...Fire Weather Zones 211, 212, 213, 214, 217 and 218. * Timing...Winds will begin to increase this afternoon and become stronger tonight and Saturday. * Winds...West 20 to 30 mph with gusts up to 60 mph. * Relative Humidity...As low as 14 percent today, and 20 to 30 percent on Saturday. * Impacts...Ongoing drought conditions combined with strong winds and low relative humidity mean conditions are prime for rapid fire growth. 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. && $$ COZ215-240230- /O.CON.KBOU.FW.W.0039.201024T0600Z-201025T0100Z/ Larimer and Boulder Counties Between 6000 and 9000 Feet- 1223 PM MDT Fri Oct 23 2020 ...RED FLAG WARNING REMAINS IN EFFECT FROM MIDNIGHT TONIGHT TO 7 PM MDT SATURDAY FOR WIND AND LOW RELATIVE HUMIDITY FOR THE NORTHERN FOOTHILLS, FIRE WEATHER ZONE 215... * Affected Area...Fire Weather Zone 215. * Timing...Winds are expected to increase and slowly spread down the foothills late tonight and Saturday. Elevations above 7500-8000 feet should see the strongest winds. * Winds...West 20 to 30 mph with gusts up to 50 mph. * Relative Humidity...As low as 25 percent. * Impacts...Ongoing drought conditions combined with strong winds mean conditions are prime for rapid fire growth. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now....or will shortly. A combination of strong winds...low relative humidity...and warm temperatures can contribute to extreme fire behavior. && $$
048 WWUS85 KBOU 240119 RFWBOU URGENT - FIRE WEATHER MESSAGE National Weather Service Denver/Boulder CO 719 PM MDT Fri Oct 23 2020 ...RED FLAG WARNING IN EFFECT UNTIL 7 PM MDT SATURDAY FOR WIND AND LOW RELATIVE HUMIDITY FOR THE MOUNTAINS AND MOUNTAINS VALLEYS, FIRE WEATHER ZONES, 211, 212, 213, 214, 217, AND 218... ...RED FLAG WARNING IN EFFECT FROM MIDNIGHT TONIGHT TO 7 PM MDT SATURDAY FOR WIND AND LOW RELATIVE HUMIDITY FOR THE NORTHERN FOOTHILLS, FIRE WEATHER ZONE 215... Winds will increase late this evening, especially across the higher peaks and ridges above 10,000 ft. Berthoud pass is already gusting over 50 mph. Past midnight those winds and gusts over 50 mph will gradually reach lower elevations, perhaps down to 9,000 feet. Wind gusts will likely increase to around 40 mph in the valleys and elevations down to about 7,000 ft by midday Saturday, with gusts up to 60 mph or more over the mountains and higher foothills much of the day. Relative humidities will drop into the teens to lower 20s percent range today across the mountains and valleys. Relative humidity slowly increases tonight, but recoveries will be poor to moderate. The existing fires burning in heavy fuels may lead to considerable additional growth tonight through Saturday. COZ211>214-217-218-241400- /O.CON.KBOU.FW.W.0039.000000T0000Z-201025T0100Z/ Jackson County Below 9000 Feet- South and Southeast Grand/West Central and Southwest Boulder/ Gilpin/Clear Creek/Summit/North and West Park Counties Above 9000 Feet-Grand and Summit Counties Below 9000 Feet- Central and Southeast Park County- West Jackson and West Grand Counties Above 9000 Feet- South and East Jackson/Larimer/North and Northeast Grand/ Northwest Boulder Counties Above 9000 Feet- 719 PM MDT Fri Oct 23 2020 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 7 PM MDT SATURDAY FOR WIND AND LOW RELATIVE HUMIDITY FOR THE MOUNTAINS AND MOUNTAINS VALLEYS, FIRE WEATHER ZONES, 211, 212, 213, 214, 217, AND 218... * Affected Area...Fire Weather Zones 211, 212, 213, 214, 217 and 218. * Timing...Winds will begin to increase this afternoon and become stronger tonight and Saturday. * Winds...West 25 to 35 mph with gusts up to 60 mph. * Relative Humidity...As low as 16 percent. * Impacts...Ongoing drought conditions combined with strong winds and low relative humidity mean conditions are prime for rapid fire growth. 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. && $$ COZ215-241400- /O.CON.KBOU.FW.W.0039.201024T0600Z-201025T0100Z/ Larimer and Boulder Counties Between 6000 and 9000 Feet- 719 PM MDT Fri Oct 23 2020 ...RED FLAG WARNING REMAINS IN EFFECT FROM MIDNIGHT TONIGHT TO 7 PM MDT SATURDAY FOR WIND AND LOW RELATIVE HUMIDITY FOR THE NORTHERN FOOTHILLS, FIRE WEATHER ZONE 215... * Affected Area...Fire Weather Zone 215. * Timing...Winds are expected to increase and slowly spread down the foothills late tonight and Saturday. Elevations above 7500- 8000 feet should see the strongest winds. * Winds...West 20 to 30 mph with gusts up to 50 mph. * Relative Humidity...As low as 25 percent. * Impacts...Ongoing drought conditions combined with strong winds mean conditions are prime for rapid fire growth. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now....or will shortly. A combination of strong winds...low relative humidity...and warm temperatures can contribute to extreme fire behavior. && $$
217 WWUS85 KBOU 240934 RFWBOU URGENT - FIRE WEATHER MESSAGE National Weather Service Denver/Boulder CO 334 AM MDT Sat Oct 24 2020 ...RED FLAG WARNING IN EFFECT UNTIL 7 PM MDT SATURDAY FOR WIND AND LOW RELATIVE HUMIDITY FOR THE MOUNTAINS AND MOUNTAINS VALLEYS, FIRE WEATHER ZONES, 211, 212, 213, 214, 217, AND 218... ...RED FLAG WARNING IN EFFECT FROM MIDNIGHT TONIGHT TO 7 PM MDT SATURDAY FOR WIND AND LOW RELATIVE HUMIDITY FOR THE NORTHERN FOOTHILLS, FIRE WEATHER ZONE 215... COZ216-241-241745- /O.EXB.KBOU.FW.W.0039.201024T1900Z-201025T0100Z/ Jefferson and West Douglas Counties Above 6000 Feet/Gilpin/Clear Creek/Northeast Park Counties Below 9000 Feet- Elbert/Central and East Douglas Counties Above 6000 Feet- 334 AM MDT Sat Oct 24 2020 ...RED FLAG WARNING IN EFFECT FROM 1 PM THIS AFTERNOON TO 7 PM MDT THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONE 216 AND 241... The National Weather Service in Denver has issued a Red Flag Warning for wind and low relative humidity, which is in effect from 1 PM this afternoon to 7 PM MDT this evening. * Affected Area...Fire Weather Zones 216 and 241. * Timing...Winds will begin to increase this afternoon and become stronger tonight and Saturday. * Winds...West 10 to 20 mph with gusts up to 35 mph. * Relative Humidity...As low as 14 percent. * Impacts...Ongoing drought conditions combined with strong winds and low relative humidity mean conditions are prime for rapid fire growth. 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. && $$ COZ211>214-217-218-241745- /O.CON.KBOU.FW.W.0039.000000T0000Z-201025T0100Z/ Jackson County Below 9000 Feet- South and Southeast Grand/West Central and Southwest Boulder/ Gilpin/Clear Creek/Summit/North and West Park Counties Above 9000 Feet-Grand and Summit Counties Below 9000 Feet- Central and Southeast Park County- West Jackson and West Grand Counties Above 9000 Feet- South and East Jackson/Larimer/North and Northeast Grand/ Northwest Boulder Counties Above 9000 Feet- 334 AM MDT Sat Oct 24 2020 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 7 PM MDT THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR THE MOUNTAINS AND MOUNTAINS VALLEYS, FIRE WEATHER ZONES, 211, 212, 213, 214, 217, AND 218... * Affected Area...Fire Weather Zones 211, 212, 213, 214, 217 and 218. * Timing...Winds will begin to increase this afternoon and become stronger tonight and Saturday. * Winds...West 25 to 35 mph with gusts up to 60 mph. * Relative Humidity...As low as 19 percent. * Impacts...Ongoing drought conditions combined with strong winds and low relative humidity mean conditions are prime for rapid fire growth. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now....or will shortly. A combination of strong winds...low relative humidity...and warm temperatures can contribute to extreme fire behavior. && $$ COZ215-241745- /O.CON.KBOU.FW.W.0039.000000T0000Z-201025T0100Z/ Larimer and Boulder Counties Between 6000 and 9000 Feet- 334 AM MDT Sat Oct 24 2020 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 7 PM MDT THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR THE NORTHERN FOOTHILLS, FIRE WEATHER ZONE 215... * Affected Area...Fire Weather Zone 215. * Timing...Winds are expected to increase and slowly spread down the foothills late tonight and Saturday. Elevations above 7500- 8000 feet should see the strongest winds. * Winds...West 20 to 30 mph with gusts up to 55 mph. * Relative Humidity...As low as 23 percent. * Impacts...Ongoing drought conditions combined with strong winds mean conditions are prime for rapid fire growth. 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. && $$
517 WWUS85 KBOU 241711 RFWBOU URGENT - FIRE WEATHER MESSAGE National Weather Service Denver/Boulder CO 1111 AM MDT Sat Oct 24 2020 ...RED FLAG WARNING IN EFFECT UNTIL 7 PM MDT THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR THE MOUNTAINS AND MOUNTAINS VALLEYS, FIRE WEATHER ZONES, 211, 212, 213, 214, 217, AND 218... ...RED FLAG WARNING IN EFFECT UNTIL 7 PM MDT THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR THE NORTHERN FOOTHILLS, FIRE WEATHER ZONE 215... COZ211>214-217-218-250100- /O.CON.KBOU.FW.W.0039.000000T0000Z-201025T0100Z/ Jackson County Below 9000 Feet- South and Southeast Grand/West Central and Southwest Boulder/ Gilpin/Clear Creek/Summit/North and West Park Counties Above 9000 Feet-Grand and Summit Counties Below 9000 Feet- Central and Southeast Park County- West Jackson and West Grand Counties Above 9000 Feet- South and East Jackson/Larimer/North and Northeast Grand/ Northwest Boulder Counties Above 9000 Feet- 1111 AM MDT Sat Oct 24 2020 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 7 PM MDT THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR THE MOUNTAINS AND MOUNTAINS VALLEYS, FIRE WEATHER ZONES, 211, 212, 213, 214, 217, AND 218... * Affected Area...Fire Weather Zones 211, 212, 213, 214, 217 and 218. * Timing...Until 7 pm MDT this evening. * Winds...West 25 to 35 mph with gusts up to 60 mph. * Relative Humidity...As low as 20 percent. * Impacts...Ongoing drought conditions combined with strong winds and low relative humidity mean conditions are prime for rapid fire growth. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now....or will shortly. A combination of strong winds...low relative humidity...and warm temperatures can contribute to extreme fire behavior. && $$ COZ215-250100- /O.CON.KBOU.FW.W.0039.000000T0000Z-201025T0100Z/ Larimer and Boulder Counties Between 6000 and 9000 Feet- 1111 AM MDT Sat Oct 24 2020 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 7 PM MDT THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR THE NORTHERN FOOTHILLS, FIRE WEATHER ZONE 215... * Affected Area...Fire Weather Zone 215. * Timing...Until 7 pm MDT this evening. * Winds...West 20 to 30 mph with gusts up to 55 mph. * Relative Humidity...As low as 25 percent. * Impacts...Ongoing drought conditions combined with strong winds mean conditions are prime for rapid fire growth. 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. && $$ COZ216-241-250100- /O.CON.KBOU.FW.W.0039.201024T1900Z-201025T0100Z/ Jefferson and West Douglas Counties Above 6000 Feet/Gilpin/Clear Creek/Northeast Park Counties Below 9000 Feet- Elbert/Central and East Douglas Counties Above 6000 Feet- 1111 AM MDT Sat Oct 24 2020 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 7 PM MDT THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONE 216 AND 241... * Affected Area...Fire Weather Zones 216 and 241. * Timing...Until 7 pm MDT this evening. * Winds...West 10 to 20 mph with gusts up to 35 mph. * Relative Humidity...As low as 14 percent. * Impacts...Ongoing drought conditions combined with strong winds and low relative humidity mean conditions are prime for rapid fire growth. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now....or will shortly. A combination of strong winds...low relative humidity...and warm temperatures can contribute to extreme fire behavior. && $$
The office that day
Everything else NWS Denver/Boulder, CO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Oct 23, 2:46 PM MDT | Winter Storm Watch | BOU | Adams, Arapahoe, Boulder, Broomfield, Clear Creek, Denver and 16 more | 24 hr |
Nearby
Red Flag Warnings in Colorado, 2020Every red flag warning in 2020
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.