Alert archive / Colorado / Flash Flood Warnings in 2012
Flash Flood Warning 7, NWS Denver/Boulder, CO
NWS Denver/Boulder, CO issued this flash flood warning at Jun 27, 2012, 4:10 PM MDT for Larimer County, Colorado. It was in force for 2 hr. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Jun 27, 2012, 4:10 PM MDT (22:10 UTC)
- Expired
- Jun 27, 2012, 6:15 PM MDT
- In force
- 2 hr
- Issued by
- NWS Denver/Boulder, CO
- Area
- Storm-based polygon
- Flood severity
- None
County Larimer County, CO
The radar
The Cheyenne radar (KCYS), 66 km from the middle of the area, began a volume at 22:10 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, 10.2 hours before the alert went out and 197 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
- 3667 m above ground
- 0-6 km bulk shear
- 29 kt
- 0-1 km storm-relative helicity
- -20 m²/s²
- 0-3 km storm-relative helicity
- 23 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
583 WGUS55 KBOU 272210 FFWBOU COC069-280015- /O.NEW.KBOU.FF.W.0007.120627T2210Z-120628T0015Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE DENVER CO 410 PM MDT WED JUN 27 2012 THE NATIONAL WEATHER SERVICE IN DENVER HAS ISSUED A * FLASH FLOOD WARNING FOR... CENTRAL LARIMER COUNTY IN NORTH CENTRAL COLORADO...THIS INCLUDES THE HIGH PARK FIRE. * UNTIL 615 PM MDT * AT 410 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED VERY HEAVY RAIN FROM A THUNDERSTORM NEAR MISHOWAKA...OR 16 MILES NORTHWEST OF FORT COLLINS. THIS STORM WAS MOVING NORTHEAST AT 20 MPH. * LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO TEDS PLACE...POUDRE PARK...MISHOWAKA...BUCKHORN MOUNTAIN AND BELLVUE. PRECAUTIONARY/PREPAREDNESS ACTIONS... A FLASH FLOOD WARNING MEANS THAT FLOODING IS IMMINENT OR OCCURRING. IF YOU ARE IN THE WARNING AREA MOVE TO HIGHER GROUND IMMEDIATELY. RESIDENTS LIVING ALONG STREAMS AND CREEKS SHOULD TAKE IMMEDIATE PRECAUTIONS TO PROTECT LIFE AND PROPERTY. DO NOT ATTEMPT TO CROSS SWIFTLY FLOWING WATERS OR WATERS OF UNKNOWN DEPTH BY FOOT OR BY AUTOMOBILE. TURN AROUND...DO NOT DROWN. && LAT...LON 4080 10526 4064 10512 4054 10533 4066 10550 $$
2 follow-up statements
616 WGUS75 KBOU 272314 FFSBOU FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE DENVER CO 514 PM MDT WED JUN 27 2012 COC069-280015- /O.CON.KBOU.FF.W.0007.000000T0000Z-120628T0015Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ LARIMER CO- 514 PM MDT WED JUN 27 2012 ...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 615 PM MDT FOR CENTRAL LARIMER COUNTY...INCLUDING HIGH PARK AND HEWLETT BURN AREAS... AT 509 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED VERY HEAVY RAIN FROM A THUNDERSTORM 4 MILES NORTHEAST OF POUDRE PARK...OR ABOUT 14 MILES NORTHWEST OF FORT COLLINS. THIS STORM WAS MOVING NORTHEAST AT 25 MPH. LOCATIONS REMAINING IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO TEDS PLACE...POUDRE PARK...MISHOWAKA...BUCKHORN MOUNTAIN AND BELLVUE. A SPOTTER JUST WEST OF TEDS PLACE REPORTED .70 INCHES OF RAIN DURING THE PAST 2 HOURS. HE REPORTED NO FLOODING AT HIS SPECIFIC LOCATION. ADDITIONAL STORMS WILL BE MOVING INTO THE HIGH PARK AND HEWLETT FIRE BURNS THROUGH 7 PM. DOPPLER RADAR INDICATED UP TO 2 INCHES OF RAIN HAVE FALLEN IN THE BURN AREA. PRECAUTIONARY/PREPAREDNESS ACTIONS... EXCESSIVE RUNOFF FROM THIS STORM WILL CAUSE FLASH FLOODING OF CREEKS AND STREAMS...ROADS...AND ROADSIDE CULVERTS. THE HEAVY RAINS COULD ALSO TRIGGER DEBRIS FLOWS OR ROCK SLIDES IN THE HIGH PARK AND HEWLETT FIRE BURN AREAS. MOST FLASH FLOOD DEATHS OCCUR IN AUTOMOBILES. DO NOT ATTEMPT TO CROSS BRIDGES...DIPS...OR OTHER LOW SPOTS IF WATER COVERS THE ROADWAY. NEVER TRY TO CROSS A FLOWING STREAM...EVEN A SMALL ONE...ON FOOT. TO ESCAPE RISING WATER CLIMB TO HIGHER GROUND. && LAT...LON 4080 10526 4064 10512 4054 10533 4066 10550 $$
597 WGUS75 KBOU 280013 FFSBOU FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE DENVER CO 613 PM MDT WED JUN 27 2012 COC069-280019- /O.EXP.KBOU.FF.W.0007.000000T0000Z-120628T0015Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ LARIMER CO- 613 PM MDT WED JUN 27 2012 ...THE FLASH FLOOD WARNING WILL EXPIRE AT 615 PM MDT FOR CENTRAL LARIMER COUNTY... THE STORM THAT PROMPTED THE WARNING HAS WEAKENED AND IS NO LONGER EXPECTED TO PRODUCE FLASH FLOODING. CONTINUED SCATTERED RAIN SHOWERS AND A FEW THUNDERSTORMS ARE STILL EXPECTED ACROSS THE HIGH PARK FIRE THROUGH 730 PM...BUT ADDITIONAL RAINFALL FROM THE PASSING SHOWERS WILL BE UNDER A TENTH OF AN INCH IN 30 MINUTES. THE INCIDENT COMMAND ON THE HIGH PARK FIRE REPORTED NO FLOODING ANYWHERE ON THE HIGH PARK AND HEWLETT BURNS. EARLIER A SPOTTER NEAR TEDS PLACE REPORTED .70 INCHES OF RAIN. DOPPLER RADAR ESTIMATED ANYWHERE FROM A HALF INCH OF RAIN TO JUST OVER 2 INCHES OF RAIN OVER THE BURN AREA. LAT...LON 4080 10526 4064 10512 4054 10533 4066 10550 $$
The office that day
Everything else NWS Denver/Boulder, CO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 27, 10:19 AM MDT | Red Flag Warning | BOU | Boulder, Clear Creek, Douglas, Gilpin, Jefferson, Larimer and 1 more | 10 hr |
| Jun 27, 4:19 PM MDT | Severe Thunderstorm Warning | BOU | Morgan, Washington | 41 min |
| Jun 27, 4:49 PM MDT | Severe Thunderstorm Warning | BOU | Adams, Arapahoe, Morgan, Washington, Weld | 41 min |
| Jun 27, 5:18 PM MDT | Severe Thunderstorm Warning | BOU | Washington | 27 min |
Nearby
Flash Flood Warnings in Colorado, 2012Every flash flood warning in 2012
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.