Alert archive / Colorado / Red Flag Warnings in 2016
Red Flag Warning 19, NWS Denver/Boulder, CO
NWS Denver/Boulder, CO issued this red flag warning at Sep 5, 2016, 3:52 AM MDT for 7 counties in Colorado. It took effect at Sep 5, 2016, 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
- Sep 5, 2016, 3:52 AM MDT (09:52 UTC)
- In effect from
- Sep 5, 2016, 12:00 PM MDT
- Expired
- Sep 5, 2016, 7:00 PM MDT
- In force
- 7 hr
- Issued by
- NWS Denver/Boulder, CO
Counties Arapahoe County, CO, Douglas County, CO, Elbert County, CO, Grand County, CO, Jackson County, CO, Lincoln County, CO, Summit County, CO
The radar
The Denver radar (KFTG), 47 km from the middle of the area, began a volume at 09:52 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, 9.9 hours before the alert went out and 159 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
- 3373 m above ground
- 0-6 km bulk shear
- 33 kt
- 0-1 km storm-relative helicity
- 115 m²/s²
- 0-3 km storm-relative helicity
- 72 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
345 WWUS85 KBOU 050952 RFWBOU URGENT - FIRE WEATHER MESSAGE NATIONAL WEATHER SERVICE DENVER/BOULDER CO 352 AM MDT MON SEP 5 2016 ...FIRE DANGER INCREASING TODAY... .DRY AND VERY WARM SOUTHWEST FLOW ALOFT WILL BRING CRITICAL FIRE WEATHER CONDITIONS TO PORTIONS OF COLORADO TODAY. CRITICAL RED FLAG CONDITIONS ARE EXPECTED TO DEVELOP WHERE THE COMBINATION OF WINDS...LOWER HUMIDITIES...AND DRY FUELS EXIST...MAINLY IN MOUNTAIN VALLEYS AND OVER THE PALMER DIVIDE. COZ211-213-241-246-247-051800- /O.NEW.KBOU.FW.W.0019.160905T1800Z-160906T0100Z/ JACKSON COUNTY BELOW 9000 FEET- GRAND AND SUMMIT COUNTIES BELOW 9000 FEET- 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- 352 AM MDT MON SEP 5 2016 ...RED FLAG WARNING IN EFFECT FROM NOON TODAY TO 7 PM MDT THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR THE HIGH MOUNTAIN VALLEYS OF NORTH CENTRAL COLORADO AND THE PALMER DIVIDE AREA...FIRE WEATHER ZONES 211...213..241...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 TODAY TO 7 PM MDT THIS EVENING. * AFFECTED AREA...FIRE WEATHER ZONES 211...213...241...246 AND 247. * TIMING...CRITICAL FIRE WEATHER CONDITIONS WILL DEVELOP BY THIS AFTERNOON. CONDITIONS ARE THEN EXPECTED TO IMPROVE RAPIDLY BY SUNSET AS WINDS DIMINISH AND HUMIDITIES IMPROVE. * WINDS...SOUTHWEST 10 TO 20 MPH WITH GUSTS UP TO 30 MPH. * RELATIVE HUMIDITY...10-15 PERCENT. * IMPACTS...RAPID FIRE SPREAD WILL BE POSSIBLE DUE TO GUSTY WINDS AND VERY LOW HUMIDITIES. 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. && $$
2 follow-up statements
299 WWUS85 KBOU 051838 RFWBOU URGENT - FIRE WEATHER MESSAGE NATIONAL WEATHER SERVICE DENVER/BOULDER CO 1238 PM MDT MON SEP 5 2016 ...AREAS OF VERY HIGH FIRE DANGER THIS AFTERNOON... .DRY AND VERY WARM SOUTHWEST FLOW ALOFT TODAY WILL BRING CRITICAL FIRE WEATHER CONDITIONS TO THE NORTHERN COLORADO MOUNTAIN VALLEYS AS WELL AS AREAS JUST SOUTH AND SOUTHEAST OF DENVER. THESE AREAS WILL HAVE THE RIGHT COMBINATION OF WINDS...LOWER HUMIDITIES...AND DRY FUELS TO PRODUCE A HIGH THREAT OF RAPID FIRE SPREAD. CONDITIONS WILL BE WORST NEAR THE WYOMING BORDER. COZ211-213-241-246-247-060100- /O.CON.KBOU.FW.W.0019.000000T0000Z-160906T0100Z/ JACKSON COUNTY BELOW 9000 FEET- GRAND AND SUMMIT COUNTIES BELOW 9000 FEET- ELBERT/CENTRAL AND EAST DOUGLAS COUNTIES ABOVE 6000 FEET- NORTH AND NORTHEAST ELBERT COUNTY BELOW 6000 FEET/NORTH LINCOLN COUNTY- SOUTHEAST ELBERT COUNTY BELOW 6000 FEET/SOUTH LINCOLN COUNTY- 1238 PM MDT MON SEP 5 2016 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 7 PM MDT THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR THE HIGH MOUNTAIN VALLEYS OF NORTH CENTRAL COLORADO AND THE PALMER DIVIDE AREA...FIRE WEATHER ZONES 211...213..241...246...AND 247... * AFFECTED AREA...FIRE WEATHER ZONES 211...213...241...246 AND 247. * TIMING...RED FLAG CONDITIONS WILL DEVELOP BY EARLY AFTERNOON. CONDITIONS ARE THEN EXPECTED TO IMPROVE RAPIDLY BY SUNSET AS WINDS DIMINISH AND HUMIDITIES IMPROVE. * WINDS...SOUTHWEST 10 TO 20 MPH WITH GUSTS UP TO 30 MPH. * RELATIVE HUMIDITY...AS LOW AS 10 PERCENT. * IMPACTS...RAPID FIRE SPREAD WILL BE POSSIBLE DUE TO GUSTY WINDS AND VERY LOW HUMIDITIES. PRECAUTIONARY/PREPAREDNESS ACTIONS... A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS ARE EITHER OCCURRING NOW....OR WILL SHORTLY. A COMBINATION OF STRONG WINDS...LOW RELATIVE HUMIDITY...AND WARM TEMPERATURES CAN CONTRIBUTE TO EXTREME FIRE BEHAVIOR. && $$ GIMMESTAD
212 WWUS85 KBOU 060048 RFWBOU URGENT - FIRE WEATHER MESSAGE NATIONAL WEATHER SERVICE DENVER/BOULDER CO 648 PM MDT MON SEP 5 2016 COZ211-213-241-246-247-060200- /O.EXP.KBOU.FW.W.0019.000000T0000Z-160906T0100Z/ JACKSON COUNTY BELOW 9000 FEET- GRAND AND SUMMIT COUNTIES BELOW 9000 FEET- 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- 648 PM MDT MON SEP 5 2016 ...RED FLAG WARNING WILL EXPIRE AT 7 PM MDT THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR THE HIGH MOUNTAIN VALLEYS OF NORTH CENTRAL COLORADO AND THE PALMER DIVIDE AREA... WINDS WILL CONTINUE TO SLOWLY DECREASE AND RELATIVE HUMIDITIES WILL CLIMB. THEREFORE...THE RED FLAG WARNING WILL BE ALLOWED TO EXPIRE. $$
The office that day
Everything else NWS Denver/Boulder, CO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 4, 6:00 PM MDT | Severe Thunderstorm Warning | BOU | Logan | 22 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.