Alert archive / Colorado / Red Flag Warnings in 2016
Red Flag Warning 24, NWS Denver/Boulder, CO
NWS Denver/Boulder, CO issued this red flag warning at Sep 17, 2016, 3:03 PM MDT for 7 counties in Colorado. It took effect at Sep 18, 2016, 11:00 AM MDT. It was in force for 8 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
- Sep 17, 2016, 3:03 PM MDT (21:03 UTC)
- In effect from
- Sep 18, 2016, 11:00 AM MDT
- Expired
- Sep 18, 2016, 7:00 PM MDT
- In force
- 8 hr
- Issued by
- NWS Denver/Boulder, CO
Counties Boulder County, CO, Grand County, CO, Jackson County, CO, Larimer County, CO, Logan County, CO, Summit County, CO, Weld County, CO
The radar
The Denver radar (KFTG), 88 km from the middle of the area, began a volume at 21:06 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, 9.1 hours before the alert went out and 182 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
- 5 J/kg
- Mixed-layer CIN
- -220 J/kg
- Mixed-layer LCL
- 1928 m above ground
- 0-6 km bulk shear
- 41 kt
- 0-1 km storm-relative helicity
- 131 m²/s²
- 0-3 km storm-relative helicity
- 134 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
421 WWUS85 KBOU 172103 RFWBOU URGENT - FIRE WEATHER MESSAGE NATIONAL WEATHER SERVICE DENVER/BOULDER CO 303 PM MDT SAT SEP 17 2016 ...CRITICAL FIRE WEATHER CONDITIONS EXPECTED SUNDAY AFTERNOON... .POOR HUMIDITY RECOVERY IS EXPECTED TONIGHT OVER THE NORTHERN MOUNTAINS AND HIGH VALLEYS AS WELL AS THE NORTHERN FOOTHILLS WITH GUSTY DOWNSLOPE WEST WINDS TO 35 MPH. GUSTY WESTERLY WINDS COUPLED WITH WARMER TEMPERATURES ON SUNDAY WILL DROP HUMIDITY VALUES INTO THE TEENS BY AFTERNOON. COZ211-215-238-242-180515- /O.NEW.KBOU.FW.W.0024.160918T1700Z-160919T0100Z/ JACKSON COUNTY BELOW 9000 FEET- LARIMER AND BOULDER COUNTIES BETWEEN 6000 AND 9000 FEET- LARIMER COUNTY BELOW 6000 FEET/NORTHWEST WELD COUNTY- NORTHEAST WELD COUNTY- 303 PM MDT SAT SEP 17 2016 ...RED FLAG WARNING IN EFFECT FROM 11 AM TO 7 PM MDT SUNDAY FOR WIND AND LOW RELATIVE HUMIDITY FOR NORTH PARK...NORTHERN FRONT RANGE FOOTHILLS AND THE ADJACENT PLAINS BORDERING WYOMING... THE NATIONAL WEATHER SERVICE IN DENVER HAS ISSUED A RED FLAG WARNING FOR WIND AND LOW RELATIVE HUMIDITY...WHICH IS IN EFFECT FROM 11 AM TO 7 PM MDT SUNDAY. * AFFECTED AREA...FIRE WEATHER ZONES 211...215...238 AND 242. * TIMING...11 AM TO 7 PM. * WINDS...WEST 10 TO 20 MPH WITH GUSTS UP TO 35 MPH. * RELATIVE HUMIDITY...AS LOW AS 12 PERCENT. * IMPACTS...DUE TO DRY CONDITIONS AND INCREASING WINDS...EVERYONE SHOULD BE VERY CAREFUL WITH CAMPFIRES AND ANYTHING CAPABLE OF PRODUCING A SPARK. LARGE FIRES COULD RESULT FROM CARELESSNESS OR INATTENTION AND SPREAD RAPIDLY. 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. && $$
4 follow-up statements
046 WWUS85 KBOU 180546 RFWBOU URGENT - FIRE WEATHER MESSAGE NATIONAL WEATHER SERVICE DENVER/BOULDER CO 1146 PM MDT SAT SEP 17 2016 ...CRITICAL FIRE WEATHER CONDITIONS EXPECTED SUNDAY AFTERNOON... .POOR HUMIDITY RECOVERY IS EXPECTED TONIGHT OVER THE NORTHERN MOUNTAINS AND HIGH VALLEYS AS WELL AS THE NORTHERN FOOTHILLS WITH GUSTY DOWNSLOPE WEST WINDS TO 35 MPH. GUSTY WESTERLY WINDS COUPLED WITH WARMER TEMPERATURES ON SUNDAY WILL DROP HUMIDITY VALUES INTO THE TEENS BY AFTERNOON. COZ211-215-238-242-181400- /O.CON.KBOU.FW.W.0024.160918T1700Z-160919T0100Z/ JACKSON COUNTY BELOW 9000 FEET- LARIMER AND BOULDER COUNTIES BETWEEN 6000 AND 9000 FEET- LARIMER COUNTY BELOW 6000 FEET/NORTHWEST WELD COUNTY- NORTHEAST WELD COUNTY- 1146 PM MDT SAT SEP 17 2016 ...RED FLAG WARNING REMAINS IN EFFECT FROM 11 AM TO 7 PM MDT SUNDAY FOR WIND AND LOW RELATIVE HUMIDITY FOR NORTH PARK... NORTHERN FRONT RANGE FOOTHILLS AND THE ADJACENT PLAINS BORDERING WYOMING... * AFFECTED AREA...FIRE WEATHER ZONES 211...215...238 AND 242. * TIMING...11 AM TO 7 PM. * WINDS...WEST 10 TO 20 MPH WITH GUSTS UP TO 30 MPH. * RELATIVE HUMIDITY...AS LOW AS 12 PERCENT. * IMPACTS...DUE TO DRY CONDITIONS AND INCREASING WINDS... EVERYONE SHOULD BE VERY CAREFUL WITH CAMPFIRES AND ANYTHING CAPABLE OF PRODUCING A SPARK. LARGE FIRES COULD RESULT FROM CARELESSNESS OR INATTENTION AND SPREAD RAPIDLY. PRECAUTIONARY/PREPAREDNESS ACTIONS... A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS ARE EITHER OCCURRING NOW....OR WILL SHORTLY. A COMBINATION OF STRONG WINDS...LOW RELATIVE HUMIDITY...AND WARM TEMPERATURES CAN CONTRIBUTE TO EXTREME FIRE BEHAVIOR. && $$
418 WWUS85 KBOU 180943 RFWBOU URGENT - FIRE WEATHER MESSAGE NATIONAL WEATHER SERVICE DENVER/BOULDER CO 343 AM MDT SUN SEP 18 2016 COZ211-215-238-242-181745- /O.CON.KBOU.FW.W.0024.160918T1700Z-160919T0100Z/ JACKSON COUNTY BELOW 9000 FEET- LARIMER AND BOULDER COUNTIES BETWEEN 6000 AND 9000 FEET- LARIMER COUNTY BELOW 6000 FEET/NORTHWEST WELD COUNTY- NORTHEAST WELD COUNTY- 343 AM MDT SUN SEP 18 2016 ...RED FLAG WARNING REMAINS IN EFFECT FROM 11 AM THIS MORNING TO 7 PM MDT THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR NORTH PARK...NORTHERN FRONT RANGE FOOTHILLS AND THE ADJACENT PLAINS BORDERING WYOMING... * AFFECTED AREA...FIRE WEATHER ZONES 211...215...238 AND 242. * TIMING...11 AM TO 7 PM. * WINDS...WEST 10 TO 20 MPH WITH GUSTS UP TO 35 MPH. * RELATIVE HUMIDITY...AS LOW AS 12 PERCENT. * IMPACTS...DUE TO DRY CONDITIONS AND INCREASING WINDS... EVERYONE SHOULD BE VERY CAREFUL WITH CAMPFIRES AND ANYTHING CAPABLE OF PRODUCING A SPARK. LARGE FIRES COULD RESULT FROM CARELESSNESS OR INATTENTION AND SPREAD RAPIDLY. 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. && $$
681 WWUS85 KBOU 181505 RFWBOU URGENT - FIRE WEATHER MESSAGE NATIONAL WEATHER SERVICE DENVER/BOULDER CO 905 AM MDT SUN SEP 18 2016 ...CRITICAL FIRE WEATHER CONDITIONS THIS AFTERNOON... .CRITICAL FIRE WEATHER CONDITIONS ARE NOW EXPECTED TO DEVELOP ACROSS THE HIGH MOUNTAIN VALLEYS IN GRAND COUNTY AND FURTHER EAST ON THE PLAINS THROUGH LOGAN COUNTY BY AFTERNOON. VERY DRY CONDITIONS TODAY COUPLED WITH WARMER TEMPERATURES AND GUSTY WINDS WILL CREATE CRITICAL FIRE WEATHER CONDITIONS BY AFTERNOON. LOW HUMIDITY RECOVERY LAST NIGHT IN LOCATIONS BORDERING WYOMING ALONG WITH INCREASING WINDS WILL DROP HUMIDITY LEVELS QUICKLY BY LATER THIS MORNING. COZ213-248-182315- /O.EXA.KBOU.FW.W.0024.160918T1700Z-160919T0100Z/ GRAND AND SUMMIT COUNTIES BELOW 9000 FEET-LOGAN COUNTY- 905 AM MDT SUN SEP 18 2016 ...RED FLAG WARNING IN EFFECT UNTIL 7 PM MDT THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR MIDDLE PARK IN GRAND COUNTY AND ON THE PLAINS IN LOGAN COUNTY... THE NATIONAL WEATHER SERVICE IN DENVER HAS ISSUED A RED FLAG WARNING FOR WIND AND LOW RELATIVE HUMIDITY...WHICH IS IN EFFECT UNTIL 7 PM MDT THIS EVENING. * AFFECTED AREA...FIRE WEATHER ZONES 213 AND 248. * TIMING...11 AM TO 7 PM. * WINDS...WEST 10 TO 20 MPH WITH GUSTS UP TO 30 MPH. * RELATIVE HUMIDITY...AS LOW AS 12 PERCENT. * IMPACTS...DUE TO DRY CONDITIONS AND INCREASING WINDS... EVERYONE SHOULD BE VERY CAREFUL WITH ANYTHING CAPABLE OF PRODUCING A SPARK. LARGE FIRES COULD RESULT FROM CARELESSNESS OR INATTENTION AND SPREAD RAPIDLY. PRECAUTIONARY/PREPAREDNESS ACTIONS... A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS ARE EITHER OCCURRING NOW....OR WILL SHORTLY. A COMBINATION OF STRONG WINDS...LOW RELATIVE HUMIDITY...AND WARM TEMPERATURES CAN CONTRIBUTE TO EXTREME FIRE BEHAVIOR. && $$ COZ211-215-238-242-182315- /O.CON.KBOU.FW.W.0024.160918T1700Z-160919T0100Z/ JACKSON COUNTY BELOW 9000 FEET- LARIMER AND BOULDER COUNTIES BETWEEN 6000 AND 9000 FEET- LARIMER COUNTY BELOW 6000 FEET/NORTHWEST WELD COUNTY- NORTHEAST WELD COUNTY- 905 AM MDT SUN SEP 18 2016 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 7 PM MDT THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR NORTH PARK...NORTHERN FRONT RANGE FOOTHILLS AND THE ADJACENT PLAINS BORDERING WYOMING... * AFFECTED AREA...FIRE WEATHER ZONES 211...215...238 AND 242. * TIMING...11 AM TO 7 PM. * WINDS...WEST 10 TO 20 MPH WITH GUSTS UP TO 40 MPH. * RELATIVE HUMIDITY...AS LOW AS 12 PERCENT. * IMPACTS...DUE TO DRY CONDITIONS AND INCREASING WINDS... EVERYONE SHOULD BE VERY CAREFUL WITH CAMPFIRES AND ANYTHING CAPABLE OF PRODUCING A SPARK. LARGE FIRES COULD RESULT FROM CARELESSNESS OR INATTENTION AND SPREAD RAPIDLY. 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. && $$
260 WWUS85 KBOU 182142 RFWBOU URGENT - FIRE WEATHER MESSAGE NATIONAL WEATHER SERVICE DENVER/BOULDER CO 342 PM MDT SUN SEP 18 2016 COZ211-213-215-238-242-248-190100- /O.CON.KBOU.FW.W.0024.000000T0000Z-160919T0100Z/ JACKSON COUNTY BELOW 9000 FEET- GRAND AND SUMMIT COUNTIES BELOW 9000 FEET- LARIMER AND BOULDER COUNTIES BETWEEN 6000 AND 9000 FEET- LARIMER COUNTY BELOW 6000 FEET/NORTHWEST WELD COUNTY- NORTHEAST WELD COUNTY-LOGAN COUNTY- 342 PM MDT SUN SEP 18 2016 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 7 PM MDT THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR MIDDLE PARK IN GRAND COUNTY AND ON THE PLAINS IN LOGAN COUNTY... * AFFECTED AREA...FIRE WEATHER ZONES 211...213...215...238... 242 AND 248. * TIMING...11 AM TO 7 PM. * WINDS...WEST 10 TO 20 MPH WITH GUSTS UP TO 35 MPH. * RELATIVE HUMIDITY...AS LOW AS 12 PERCENT. * IMPACTS...DUE TO DRY CONDITIONS AND INCREASING WINDS... EVERYONE SHOULD BE VERY CAREFUL WITH ANYTHING CAPABLE OF PRODUCING A SPARK. LARGE FIRES COULD RESULT FROM CARELESSNESS OR INATTENTION AND SPREAD RAPIDLY. PRECAUTIONARY/PREPAREDNESS ACTIONS... A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS ARE EITHER OCCURRING NOW....OR WILL SHORTLY. A COMBINATION OF STRONG WINDS...LOW RELATIVE HUMIDITY...AND WARM TEMPERATURES CAN CONTRIBUTE TO EXTREME FIRE BEHAVIOR. && $$
The office that day
Everything else NWS Denver/Boulder, CO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 16, 9:45 PM MDT | Special Weather Statement | BOU | Denver | 45 min |
| Sep 17, 12:41 PM MDT | Special Weather Statement | BOU | Lincoln | 49 min |
| Sep 17, 1:15 PM MDT | Severe Thunderstorm Warning | BOU | Washington | 45 min |
Nearby
Red Flag Warnings in Colorado, 2016Every red flag warning in 2016
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.