Alert archive / Colorado / Red Flag Warnings in 2016
Red Flag Warning 21, NWS Denver/Boulder, CO
NWS Denver/Boulder, CO issued this red flag warning at Sep 7, 2016, 3:07 AM MDT for Grand County, Jackson County, Summit County, Colorado. It took effect at Sep 7, 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 7, 2016, 3:07 AM MDT (09:07 UTC)
- In effect from
- Sep 7, 2016, 12:00 PM MDT
- Expired
- Sep 7, 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 09:08 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, 9.1 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
- 3779 m above ground
- 0-6 km bulk shear
- 44 kt
- 0-1 km storm-relative helicity
- -9 m²/s²
- 0-3 km storm-relative helicity
- 105 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
675 WWUS85 KBOU 070907 RFWBOU URGENT - FIRE WEATHER MESSAGE NATIONAL WEATHER SERVICE DENVER/BOULDER CO 307 AM MDT WED SEP 7 2016 ...FIRE DANGER REMAINS HIGH ACROSS PORTIONS OF NORTHERN COLORADO... .WESTERLY 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. COZ211-213-071715- /O.NEW.KBOU.FW.W.0021.160907T1800Z-160908T0100Z/ JACKSON COUNTY BELOW 9000 FEET- GRAND AND SUMMIT COUNTIES BELOW 9000 FEET- 307 AM MDT WED SEP 7 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...WEST 15 TO 25 MPH WITH GUSTS AROUND 30 MPH. * RELATIVE HUMIDITY...10 TO 15 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. && $$
1 follow-up statement
635 WWUS85 KBOU 072214 RFWBOU URGENT - FIRE WEATHER MESSAGE NATIONAL WEATHER SERVICE DENVER/BOULDER CO 414 PM MDT WED SEP 7 2016 ...FIRE DANGER REMAINS HIGH ACROSS PORTIONS OF NORTHERN COLORADO... .DRY AND BREEZY CONDITIONS WILL CONTINUE OVER NORTH PARK AND MIDDLE PARK IN NORTH CENTRAL COLORADO THROUGH EARLY EVENING. THE COMBINATION OF LOW HUMIDITIES...GUSTY WINDS...AND DRY FUELS COULD ALLOW FOR RAPID FIRE GROWTH. CONDITIONS WILL IMPROVE AROUND SUNSET. ANOTHER WARM...DRY...AND BREEZY DAY IS EXPECTED ON THURSDAY...ESPECIALLY NEAR THE WYOMING BORDER. COZ211-213-080100- /O.CON.KBOU.FW.W.0021.000000T0000Z-160908T0100Z/ JACKSON COUNTY BELOW 9000 FEET- GRAND AND SUMMIT COUNTIES BELOW 9000 FEET- 414 PM MDT WED SEP 7 2016 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 7 PM MDT THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR THE HIGH MOUNTAIN VALLEYS OF NORTH CENTRAL COLORADO...FIRE WEATHER ZONES 211 AND 213... * AFFECTED AREA...FIRE WEATHER ZONES 211 AND 213. * TIMING...RED FLAG CONDITIONS WILL DEVELOP BY EARLY AFTERNOON. CONDITIONS ARE THEN EXPECTED TO IMPROVE RAPIDLY BY SUNSET AS WINDS DIMINISH AND HUMIDITIES IMPROVE. * WINDS...WEST 10 TO 20 MPH WITH GUSTS UP TO 30 MPH. * RELATIVE HUMIDITY...AS LOW AS 11 PERCENT. * IMPACTS...RAPID FIRE SPREAD WILL BE POSSIBLE DUE TO GUSTY WINDS AND LOW HUMIDITIES. PRECAUTIONARY/PREPAREDNESS ACTIONS... A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS ARE EITHER OCCURRING NOW....OR WILL SHORTLY. A COMBINATION OF STRONG WINDS...LOW RELATIVE HUMIDITY...AND WARM TEMPERATURES CAN CONTRIBUTE TO EXTREME FIRE BEHAVIOR. && $$ GIMMESTAD
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.