Alert archive / Colorado / Red Flag Warnings in 2011
Red Flag Warning 10, NWS Denver/Boulder, CO
NWS Denver/Boulder, CO issued this red flag warning at Mar 30, 2011, 4:03 PM MDT for 13 counties in Colorado. It took effect at Mar 31, 2011, 10:00 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
- Mar 30, 2011, 4:03 PM MDT (22:03 UTC)
- In effect from
- Mar 31, 2011, 10:00 AM MDT
- Expired
- Mar 31, 2011, 6:00 PM MDT
- In force
- 8 hr
- Issued by
- NWS Denver/Boulder, CO
Counties Adams County, CO, Arapahoe County, CO, Boulder County, CO, Broomfield County, CO, Clear Creek County, CO, Denver County, CO, Douglas County, CO, Elbert County, CO, Gilpin County, CO, Jefferson County, CO, Larimer County, CO, Park County, CO, Weld County, CO
The radar
The Denver radar (KFTG), 39 km from the middle of the area, began a volume at 22:05 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 (KDNR), launched 12:00Z, 10.1 hours before the alert went out and 151 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
- 1893 m above ground
- 0-6 km bulk shear
- 57 kt
- 0-1 km storm-relative helicity
- 75 m²/s²
- 0-3 km storm-relative helicity
- 151 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
322 WWUS85 KBOU 302203 RFWBOU URGENT - FIRE WEATHER MESSAGE NATIONAL WEATHER SERVICE DENVER CO 403 PM MDT WED MAR 30 2011 COZ214>216-238>241-243-311200- /O.NEW.KBOU.FW.W.0010.110331T1600Z-110401T0000Z/ CENTRAL AND SOUTHEAST PARK COUNTY- LARIMER AND BOULDER COUNTIES BETWEEN 6000 AND 9000 FEET- JEFFERSON AND WEST DOUGLAS COUNTIES ABOVE 6000 FEET/GILPIN/CLEAR CREEK/NORTHEAST PARK COUNTIES BELOW 9000 FEET- LARIMER COUNTY BELOW 6000 FEET/NORTHWEST WELD COUNTY- BOULDER AND JEFFERSON COUNTIES BELOW 6000 FEET/WEST BROOMFIELD COUNTY- NORTH DOUGLAS COUNTY BELOW 6000 FEET/DENVER/WEST ADAMS AND ARAPAHOE COUNTIES/EAST BROOMFIELD COUNTY- ELBERT/CENTRAL AND EAST DOUGLAS COUNTIES ABOVE 6000 FEET- CENTRAL AND SOUTH WELD COUNTY- 403 PM MDT WED MAR 30 2011 ...RED FLAG WARNING IN EFFECT FROM 10 AM TO 6 PM MDT THURSDAY FOR GUSTY WINDS AND LOW HUMIDITY FOR FIRE WEATHER ZONES 214...215... 216...238...239...240...241 AND 243... THE NATIONAL WEATHER SERVICE IN DENVER HAS ISSUED A RED FLAG WARNING...WHICH IS IN EFFECT FROM 10 AM TO 6 PM MDT THURSDAY. * AFFECTED AREA...FIRE WEATHER ZONE 214...ELEVEN MILE CANYON RESERVOIR...FAIRPLAY...GUFFEY...HARTSEL...LAKE GEORGE...SOUTH PARK...FIRE WEATHER ZONE 215...ESTES PARK...GLENDEVEY... LARAMIE RIVER VALLEY...NEDERLAND...RED FEATHER LAKES...FIRE WEATHER ZONE 216...BAILEY...CENTRAL CITY...EVERGREEN... GEORGETOWN...IDAHO SPRINGS...NORTHERN RAMPART RANGE... TARRYALL...WESTCREEK...FIRE WEATHER ZONE 238...FORT COLLINS... HEREFORD...LOVELAND...NUNN...WEST PAWNEE GRASSLANDS...FIRE WEATHER ZONE 239...ARVADA...BOULDER...GOLDEN...LAKEWOOD... LONGMONT...FIRE WEATHER ZONE 240...AURORA...BRIGHTON...CITY OF DENVER...DENVER INTERNATIONAL AIRPORT...HIGHLANDS RANCH... LITTLETON...PARKER...FIRE WEATHER ZONE 241...CASTLE ROCK... ELBERT...FONDIS...KIOWA...LARKSPUR...FIRE WEATHER ZONE 243... EATON...FORT LUPTON...GREELEY...ROGGEN. * TIMING...GUSTY WINDS AND WILL COMBINE WITH LOW RELATIVE HUMIDITIES LATE THURSDAY MORNING AND PERSIST THROUGH THURSDAY AFTERNOON. WINDS WILL TAPER OFF THURSDAY EVENING OVER THE PLAINS...BUT PERSIST IN AND NEAR THE FOOTHILLS. RELATIVE HUMIDITIES WILL CLIMB ABOVE 15 PERCENT EARLY THURSDAY EVENING. GUSTY WINDS AND LOW HUMIDITIES WILL BE POSSIBLE AGAIN FRIDAY...ESPECIALLY IN AND NEAR THE FOOTHILLS. * WIND...WEST TO NORTHWEST WINDS OF 20 TO 35 MPH WILL DEVELOP BY LATE MORNING. GUSTS TO 50 MPH WILL BE POSSIBLE IN AND NEAR THE FOOTHILLS. * HUMIDITY...MINIMUM RELATIVE HUMIDITY WILL BE 10 TO 15 PERCENT. * IMPACTS...STRONG AND GUSTY WINDS WILL COMBINE WITH LOW RELATIVE HUMIDITY TO PRODUCE FAVORABLE CONDITIONS FOR THE RAPID GROWTH AND SPREAD OF WILDLAND FIRES. PRECAUTIONARY/PREPAREDNESS ACTIONS... A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS ARE EITHER OCCURRING OR IMMINENT. PLEASE ADVISE THE APPROPRIATE OFFICIALS AND FIRE CREWS IN THE FIELD OF THIS RED FLAG WARNING. && $$
3 follow-up statements
896 WWUS85 KBOU 311111 RFWBOU URGENT - FIRE WEATHER MESSAGE NATIONAL WEATHER SERVICE DENVER CO 511 AM MDT THU MAR 31 2011 COZ214>216-238>241-243-312315- /O.CON.KBOU.FW.W.0010.110331T1600Z-110401T0000Z/ CENTRAL AND SOUTHEAST PARK COUNTY- LARIMER AND BOULDER COUNTIES BETWEEN 6000 AND 9000 FEET- JEFFERSON AND WEST DOUGLAS COUNTIES ABOVE 6000 FEET/GILPIN/CLEAR CREEK/NORTHEAST PARK COUNTIES BELOW 9000 FEET- LARIMER COUNTY BELOW 6000 FEET/NORTHWEST WELD COUNTY- BOULDER AND JEFFERSON COUNTIES BELOW 6000 FEET/WEST BROOMFIELD COUNTY- NORTH DOUGLAS COUNTY BELOW 6000 FEET/DENVER/WEST ADAMS AND ARAPAHOE COUNTIES/EAST BROOMFIELD COUNTY- ELBERT/CENTRAL AND EAST DOUGLAS COUNTIES ABOVE 6000 FEET- CENTRAL AND SOUTH WELD COUNTY- 511 AM MDT THU MAR 31 2011 ...RED FLAG WARNING REMAINS IN EFFECT FROM 10 AM THIS MORNING TO 6 PM MDT THIS EVENING FOR GUSTY WINDS AND LOW HUMIDITY FOR FIRE WEATHER ZONES 214...215... 216...238...239...240...241 AND 243... * AFFECTED AREA...FIRE WEATHER ZONE 214...ELEVEN MILE CANYON RESERVOIR...FAIRPLAY...GUFFEY...HARTSEL...LAKE GEORGE...SOUTH PARK...FIRE WEATHER ZONE 215...ESTES PARK...GLENDEVEY... LARAMIE RIVER VALLEY...NEDERLAND...RED FEATHER LAKES...FIRE WEATHER ZONE 216...BAILEY...CENTRAL CITY...EVERGREEN... GEORGETOWN...IDAHO SPRINGS...NORTHERN RAMPART RANGE... TARRYALL...WESTCREEK...FIRE WEATHER ZONE 238...FORT COLLINS... HEREFORD...LOVELAND...NUNN...WEST PAWNEE GRASSLANDS...FIRE WEATHER ZONE 239...ARVADA...BOULDER...GOLDEN...LAKEWOOD... LONGMONT...FIRE WEATHER ZONE 240...AURORA...BRIGHTON...CITY OF DENVER...DENVER INTERNATIONAL AIRPORT...HIGHLANDS RANCH... LITTLETON...PARKER...FIRE WEATHER ZONE 241...CASTLE ROCK... ELBERT...FONDIS...KIOWA...LARKSPUR...FIRE WEATHER ZONE 243... EATON...FORT LUPTON...GREELEY...ROGGEN. * TIMING...GUSTY WINDS WILL COMBINE WITH LOW RELATIVE HUMIDITIES LATE THIS MORNING AND PERSIST THROUGH THE AFTERNOON. WINDS WILL TAPER OFF THIS EVENING OVER THE PLAINS...BUT PERSIST IN AND NEAR THE FOOTHILLS. RELATIVE HUMIDITIES WILL CLIMB ABOVE 15 PERCENT EARLY THIS EVENING. GUSTY WINDS AND LOW HUMIDITIES WILL BE POSSIBLE AGAIN FRIDAY...ESPECIALLY IN AND NEAR THE FOOTHILLS. * WIND...WEST TO NORTHWEST WINDS OF 20 TO 35 MPH WILL DEVELOP BY LATE MORNING. GUSTS TO 50 MPH WILL BE POSSIBLE IN AND NEAR THE FOOTHILLS. * HUMIDITY...MINIMUM RELATIVE HUMIDITY WILL BE 10 TO 15 PERCENT. * IMPACTS...STRONG AND GUSTY WINDS WILL COMBINE WITH LOW RELATIVE HUMIDITY TO PRODUCE FAVORABLE CONDITIONS FOR THE RAPID GROWTH AND SPREAD OF WILDLAND FIRES. PRECAUTIONARY/PREPAREDNESS ACTIONS... A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS ARE EITHER OCCURRING OR IMMINENT. PLEASE ADVISE THE APPROPRIATE OFFICIALS AND FIRE CREWS IN THE FIELD OF THIS RED FLAG WARNING. && $$
955 WWUS85 KBOU 311730 RFWBOU URGENT - FIRE WEATHER MESSAGE NATIONAL WEATHER SERVICE DENVER CO 1130 AM MDT THU MAR 31 2011 COZ214>216-238>241-243-010000- /O.CON.KBOU.FW.W.0010.000000T0000Z-110401T0000Z/ CENTRAL AND SOUTHEAST PARK COUNTY- LARIMER AND BOULDER COUNTIES BETWEEN 6000 AND 9000 FEET- JEFFERSON AND WEST DOUGLAS COUNTIES ABOVE 6000 FEET/GILPIN/CLEAR CREEK/NORTHEAST PARK COUNTIES BELOW 9000 FEET- LARIMER COUNTY BELOW 6000 FEET/NORTHWEST WELD COUNTY- BOULDER AND JEFFERSON COUNTIES BELOW 6000 FEET/WEST BROOMFIELD COUNTY- NORTH DOUGLAS COUNTY BELOW 6000 FEET/DENVER/WEST ADAMS AND ARAPAHOE COUNTIES/EAST BROOMFIELD COUNTY- ELBERT/CENTRAL AND EAST DOUGLAS COUNTIES ABOVE 6000 FEET- CENTRAL AND SOUTH WELD COUNTY- 1130 AM MDT THU MAR 31 2011 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 6 PM MDT THIS EVENING FOR GUSTY WINDS AND LOW HUMIDITY FOR FIRE WEATHER ZONES 214... 215... 216...238...239...240...241 AND 243... * AFFECTED AREA...FIRE WEATHER ZONE 214...ELEVEN MILE CANYON RESERVOIR...FAIRPLAY...GUFFEY...HARTSEL...LAKE GEORGE...SOUTH PARK...FIRE WEATHER ZONE 215...ESTES PARK...GLENDEVEY... LARAMIE RIVER VALLEY...NEDERLAND...RED FEATHER LAKES...FIRE WEATHER ZONE 216...BAILEY...CENTRAL CITY...EVERGREEN... GEORGETOWN...IDAHO SPRINGS...NORTHERN RAMPART RANGE... TARRYALL...WESTCREEK...FIRE WEATHER ZONE 238...FORT COLLINS... HEREFORD...LOVELAND...NUNN...WEST PAWNEE GRASSLANDS...FIRE WEATHER ZONE 239...ARVADA...BOULDER...GOLDEN...LAKEWOOD... LONGMONT...FIRE WEATHER ZONE 240...AURORA...BRIGHTON...CITY OF DENVER...DENVER INTERNATIONAL AIRPORT...HIGHLANDS RANCH... LITTLETON...PARKER...FIRE WEATHER ZONE 241...CASTLE ROCK... ELBERT...FONDIS...KIOWA...LARKSPUR...FIRE WEATHER ZONE 243... EATON...FORT LUPTON...GREELEY...ROGGEN. * TIMING...GUSTY WINDS WILL COMBINE WITH LOW RELATIVE HUMIDITIES THIS AFTERNOON. WINDS WILL TAPER OFF THIS EVENING OVER THE PLAINS...BUT PERSIST IN AND NEAR THE FOOTHILLS. RELATIVE HUMIDITIES WILL CLIMB ABOVE 15 PERCENT EARLY THIS EVENING. GUSTY WINDS AND LOW HUMIDITIES WILL BE POSSIBLE AGAIN FRIDAY...ESPECIALLY IN AND NEAR THE FOOTHILLS. * WIND...WEST TO NORTHWEST WINDS OF 20 TO 35 MPH WILL DEVELOP BY NOON. GUSTS TO 50 MPH WILL BE POSSIBLE IN AND NEAR THE FOOTHILLS. * HUMIDITY...MINIMUM RELATIVE HUMIDITY WILL BE 10 TO 15 PERCENT. * IMPACTS...STRONG AND GUSTY WINDS WILL COMBINE WITH LOW RELATIVE HUMIDITY TO PRODUCE FAVORABLE CONDITIONS FOR THE RAPID GROWTH AND SPREAD OF WILDLAND FIRES. PRECAUTIONARY/PREPAREDNESS ACTIONS... A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS ARE EITHER OCCURRING OR IMMINENT. PLEASE ADVISE THE APPROPRIATE OFFICIALS AND FIRE CREWS IN THE FIELD OF THIS RED FLAG WARNING. && $$
636 WWUS85 KBOU 312358 RFWBOU URGENT - FIRE WEATHER MESSAGE NATIONAL WEATHER SERVICE DENVER CO 558 PM MDT THU MAR 31 2011 COZ214>216-238>241-243-010100- /O.EXP.KBOU.FW.W.0010.000000T0000Z-110401T0000Z/ CENTRAL AND SOUTHEAST PARK COUNTY- LARIMER AND BOULDER COUNTIES BETWEEN 6000 AND 9000 FEET- JEFFERSON AND WEST DOUGLAS COUNTIES ABOVE 6000 FEET/GILPIN/CLEAR CREEK/NORTHEAST PARK COUNTIES BELOW 9000 FEET- LARIMER COUNTY BELOW 6000 FEET/NORTHWEST WELD COUNTY- BOULDER AND JEFFERSON COUNTIES BELOW 6000 FEET/WEST BROOMFIELD COUNTY- NORTH DOUGLAS COUNTY BELOW 6000 FEET/DENVER/WEST ADAMS AND ARAPAHOE COUNTIES/EAST BROOMFIELD COUNTY- ELBERT/CENTRAL AND EAST DOUGLAS COUNTIES ABOVE 6000 FEET- CENTRAL AND SOUTH WELD COUNTY- 558 PM MDT THU MAR 31 2011 ...RED FLAG WARNING WILL EXPIRE AT 6 PM MDT THIS EVENING FOR GUSTY WINDS AND LOW HUMIDITY FOR FIRE WEATHER ZONES 214...215... 216...238...239...240...241 AND 243... THE RED FLAG WARNING WILL EXPIRE AT 6 PM MDT THIS EVENING. GUSTY WEST WINDS WILL CONTINUE THIS EVENING AND OVERNIGHT IN THE FOOTHILLS. HOWEVER...RELATIVE HUMIDITIES ARE 15 TO 25 PERCENT AND WILL INCREASE THROUGH THE EVENING. THEREFORE...THE RED FLAG WARNING WILL BE ALLOWED TO EXPIRE. $$
Nearby
Red Flag Warnings in Colorado, 2011Every red flag warning in 2011
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.