Alert archive / Colorado / Red Flag Warnings in 2016
Red Flag Warning 20, NWS Denver/Boulder, CO
NWS Denver/Boulder, CO issued this red flag warning at Sep 6, 2016, 4:07 AM MDT for Grand County, Jackson County, Summit County, Colorado. It took effect at Sep 6, 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 6, 2016, 4:07 AM MDT (10:07 UTC)
- In effect from
- Sep 6, 2016, 12:00 PM MDT
- Expired
- Sep 6, 2016, 7:00 PM MDT
- In force
- 7 hr
- Issued by
- NWS Denver/Boulder, CO
Counties Grand County, CO, Jackson County, CO, Summit County, CO
The radar
The Denver radar (KFTG), 146 km from the middle of the area, began a volume at 10:04 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
Grand Junction, CO (KGJT), launched 00:00Z, 10.1 hours before the alert went out and 227 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
- 4239 m above ground
- 0-6 km bulk shear
- 53 kt
- 0-1 km storm-relative helicity
- 21 m²/s²
- 0-3 km storm-relative helicity
- 36 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
037 WWUS85 KBOU 061007 RFWBOU URGENT - FIRE WEATHER MESSAGE NATIONAL WEATHER SERVICE DENVER/BOULDER CO 407 AM MDT TUE SEP 6 2016 ...FIRE DANGER REMAINS HIGH ACROSS PORTIONS OF COLORADO... .STRONG SOUTHWEST FLOW ALOFT WILL BRING ANOTHER DAY OF DRY AND BREEZY CONDITIONS TO NORTH CENTRAL COLORADO. CRITICAL FIRE WEATHER CONDITIONS ARE EXPECTED TO DEVELOP ACROSS NORTH PARK AND MIDDLE PARK BY THIS AFTERNOON WHERE THE COMBINATION OF LOW HUMIDITIES...GUSTY WINDS...AND DRY FUELS COULD ALLOW FOR RAPID FIRE GROWTH. COZ211-213-061815- /O.NEW.KBOU.FW.W.0020.160906T1800Z-160907T0100Z/ JACKSON COUNTY BELOW 9000 FEET- GRAND AND SUMMIT COUNTIES BELOW 9000 FEET- 407 AM MDT TUE SEP 6 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...FIRE WEATHER ZONES 211 AND 213... 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 AND 213. * 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 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. && $$
2 follow-up statements
729 WWUS85 KBOU 061810 RFWBOU URGENT - FIRE WEATHER MESSAGE NATIONAL WEATHER SERVICE DENVER/BOULDER CO 1210 PM MDT TUE SEP 6 2016 ...FIRE DANGER REMAINS HIGH ACROSS PORTIONS OF COLORADO... .STRONG SOUTHWEST FLOW ALOFT WILL BRING ANOTHER DAY OF DRY AND BREEZY CONDITIONS TO NORTH CENTRAL COLORADO. CRITICAL FIRE WEATHER CONDITIONS ARE EXPECTED TO DEVELOP ACROSS NORTH PARK AND MIDDLE PARK BY THIS AFTERNOON WHERE THE COMBINATION OF LOW HUMIDITIES...GUSTY WINDS...AND DRY FUELS COULD ALLOW FOR RAPID FIRE GROWTH. COZ211-213-070100- /O.CON.KBOU.FW.W.0020.000000T0000Z-160907T0100Z/ JACKSON COUNTY BELOW 9000 FEET- GRAND AND SUMMIT COUNTIES BELOW 9000 FEET- 1210 PM MDT TUE SEP 6 2016 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 7 PM MDT THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR THE HIGH MOUNTAIN VALLEYS OF NORTH CENTRAL COLORADO...FIRE WEATHER ZONES 211 AND 213... * AFFECTED AREA...FIRE WEATHER ZONES 211 AND 213. * TIMING...RED FLAG CONDITIONS WILL DEVELOP BY EARLY AFTERNOON. CONDITIONS ARE THEN EXPECTED TO IMPROVE RAPIDLY BY SUNSET AS WINDS DIMINISH AND HUMIDITIES IMPROVE. * WINDS...SOUTHWEST 10 TO 20 MPH WITH GUSTS UP TO 30 MPH. * RELATIVE HUMIDITY...AS LOW AS 12 PERCENT. * IMPACTS...RAPID FIRE SPREAD WILL BE POSSIBLE DUE TO GUSTY WINDS AND LOW HUMIDITIES. PRECAUTIONARY/PREPAREDNESS ACTIONS... A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS ARE EITHER OCCURRING NOW....OR WILL SHORTLY. A COMBINATION OF STRONG WINDS...LOW RELATIVE HUMIDITY...AND WARM TEMPERATURES CAN CONTRIBUTE TO EXTREME FIRE BEHAVIOR. && $$
253 WWUS85 KBOU 070106 RFWBOU URGENT - FIRE WEATHER MESSAGE NATIONAL WEATHER SERVICE DENVER/BOULDER CO 706 PM MDT TUE SEP 6 2016 .WINDS EASING AND RELATIVE HUMIDITY RISING... COZ211-213-070215- /O.EXP.KBOU.FW.W.0020.000000T0000Z-160907T0100Z/ JACKSON COUNTY BELOW 9000 FEET- GRAND AND SUMMIT COUNTIES BELOW 9000 FEET- 706 PM MDT TUE SEP 6 2016 ...RED FLAG WARNING HAS EXPIRED FOR WIND AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONES 211 AND 213 NORTHERN AND MIDDLE PARKS IN NORTH CENTRAL COLORADO.. GUSTY AND VERY DRY SOUTHWEST WINDS WILL CONTINUE TO WEAKEN THIS EVENING WITH THE FORMATION OF THE NIGHTTIME TEMPERATURE INVERSION. RELATIVE HUMIDITIES WILL ALSO CONTINUE TO RISE AS TEMPERATURES FALL UNDER CLEAR TO MOSTLY CLEAR SKIES. FOR THESE REASONS THE RED FLAG WARNING HAS BEEN ALLOWED TO EXPIRE. $$ BAKER
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.