Alert archive / Colorado / Red Flag Warnings in 2016
Red Flag Warning 3, NWS Denver/Boulder, CO
NWS Denver/Boulder, CO issued this red flag warning at Feb 27, 2016, 4:21 AM MST for Larimer County, Weld County, Colorado. It took effect at Feb 27, 2016, 11:00 AM MST. 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
- Feb 27, 2016, 4:21 AM MST (11:21 UTC)
- In effect from
- Feb 27, 2016, 11:00 AM MST
- Expired
- Feb 27, 2016, 7:00 PM MST
- In force
- 8 hr
- Issued by
- NWS Denver/Boulder, CO
Counties Larimer County, CO, Weld County, CO
The radar
The Cheyenne radar (KCYS), 61 km from the middle of the area, began a volume at 11:27 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, 11.4 hours before the alert went out and 166 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
- 3777 m above ground
- 0-6 km bulk shear
- 31 kt
- 0-1 km storm-relative helicity
- 47 m²/s²
- 0-3 km storm-relative helicity
- 206 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
846 WWUS85 KBOU 271121 RFWBOU URGENT - FIRE WEATHER MESSAGE NATIONAL WEATHER SERVICE DENVER/BOULDER CO 421 AM MST SAT FEB 27 2016 COZ238-242-271930- /O.NEW.KBOU.FW.W.0003.160227T1800Z-160228T0200Z/ LARIMER COUNTY BELOW 6000 FEET/NORTHWEST WELD COUNTY- NORTHEAST WELD COUNTY- 421 AM MST SAT FEB 27 2016 ...RED FLAG WARNING IN EFFECT FROM 11 AM THIS MORNING TO 7 PM MST THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR PORTIONS OF THE NORTHERN PLAINS OF COLORADO...BORDERING WYOMING AND NEBRASKA 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 THIS MORNING TO 7 PM MST THIS EVENING. * AFFECTED AREA...FIRE WEATHER ZONES 238 AND 242. * TIMING...GUSTY WINDS AND LOW HUMIDITIES WILL DEVELOP BY THIS AFTERNOON. THE WINDS WILL CONTINUE THIS EVENING BUT HUMIDITIES WILL RECOVER SOME DURING THE EVENING HOURS. * WINDS...WEST 10 TO 18 MPH WITH GUSTS UP TO 25 MPH. HIGHER GUSTS TO 40 MPH NEAR THE WYOMING BORDER. * RELATIVE HUMIDITY...AS LOW AS 14 PERCENT. * IMPACTS...GUSTY WINDS AND LOW HUMIDITIES WILL PRODUCE CRITICAL CONDITIONS FOR DRY GRASSLANDS. RAPID GRASSLAND FIRE GROWTH WILL BE POSSIBLE DUE TO THE GUSTY WINDS. PRECAUTIONARY/PREPAREDNESS ACTIONS... A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS ARE EITHER OCCURRING NOW OR WILL OCCUR SHORTLY. A COMBINATION OF STRONG WINDS...LOW RELATIVE HUMIDITIES...AND DRY FUELS CAN CONTRIBUTE TO EXTREME FIRE BEHAVIOR. IF A FIRE IS STARTED OR ONGOING THE POTENTIAL FOR IT TO RAPIDLY SPREAD IS HIGH. && $$
2 follow-up statements
039 WWUS85 KBOU 272300 RFWBOU URGENT - FIRE WEATHER MESSAGE NATIONAL WEATHER SERVICE DENVER/BOULDER CO 400 PM MST SAT FEB 27 2016 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 7 PM MST FOR WIND AND LOW RELATIVE HUMIDITY FOR PORTIONS OF NORTHEAST COLORADO... BORDERING WYOMING AND NEBRASKA... .WARM TEMPERATURES THIS AFTERNOON ALONG WITH GUSTY WINDS WILL KEEP THE FIRE DANGER HIGH IN NORTHERN LARIMER AND NORTHERN WELD COUNTIES THROUGH THIS EVENING. DECREASING TEMPERATURES AFTER SUNSET WILL ALLOW HUMIDITIES TO RISE...REDUCING THE THREAT OF DANGEROUS FIRE BEHAVIOR. GUSTY WINDS ARE EXPECTED TO CONTINUE THROUGH THE EVENING...SO CAUTION SHOULD BE USED AROUND OPEN FLAMES. COZ238-242-280200- /O.CON.KBOU.FW.W.0003.000000T0000Z-160228T0200Z/ LARIMER COUNTY BELOW 6000 FEET/NORTHWEST WELD COUNTY- NORTHEAST WELD COUNTY- 400 PM MST SAT FEB 27 2016 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 7 PM MST THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR EASTERN LARIMER AND NORTHERN WELD COUNTIES... * AFFECTED AREA...FIRE WEATHER ZONES 238 AND 242. * TIMING...GUSTY WINDS AND LOW HUMIDITIES WILL CONTINUE EARLY THIS EVENING. HUMIDITY LEVELS WILL RISE AFTER SUNSET...THE WINDS WILL CONTINUE. * WINDS...WEST 15 TO 30 MPH WITH SOME GUSTS UP TO 50 MPH. * RELATIVE HUMIDITY...AS LOW AS 11 PERCENT. * IMPACTS...GUSTY WINDS AND LOW HUMIDITIES WILL PRODUCE CRITICAL CONDITIONS FOR DRY GRASSLANDS. RAPID GRASSLAND FIRE GROWTH WILL BE POSSIBLE DUE TO THE GUSTY WINDS. PRECAUTIONARY/PREPAREDNESS ACTIONS... A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS ARE EITHER OCCURRING NOW OR WILL OCCUR SHORTLY. A COMBINATION OF STRONG WINDS...LOW RELATIVE HUMIDITIES...AND DRY FUELS CAN CONTRIBUTE TO EXTREME FIRE BEHAVIOR. IF A FIRE IS STARTED OR ONGOING THE POTENTIAL FOR IT TO RAPIDLY SPREAD IS HIGH. && $$
671 WWUS85 KBOU 280153 RFWBOU URGENT - FIRE WEATHER MESSAGE NATIONAL WEATHER SERVICE DENVER/BOULDER CO 653 PM MST SAT FEB 27 2016 COZ238-242-280300- /O.EXP.KBOU.FW.W.0003.000000T0000Z-160228T0200Z/ LARIMER COUNTY BELOW 6000 FEET/NORTHWEST WELD COUNTY- NORTHEAST WELD COUNTY- 653 PM MST SAT FEB 27 2016 ...RED FLAG WARNING WILL EXPIRE AT 7 PM MST THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR EASTERN LARIMER AND NORTHERN WELD COUNTIES... TEMPERATURES HAVE COOLED AND RELATIVE HUMIDITIES HAVE INCREASED. THEREFORE THE RED FLAG WARNING WILL BE ALLOWED TO EXPIRE. A COLD FRONT WILL PUSH THROUGH THIS EVENING CAUSING WINDS TO INCREASE AGAIN. WEST TO NORTHWEST WINDS OF 15 TO 25 MPH WITH GUSTS TO 40 MPH ARE EXPECTED BEHIND THE FRONT LATER THIS EVENING. $$
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.