Alert archive / Colorado / Flash Flood Warnings in 2005

Flash Flood Warning 2, NWS Denver/Boulder, CO

June 3, 2005Larimer County, Colorado

NWS Denver/Boulder, CO issued this flash flood warning at Jun 3, 2005, 2:48 PM MDT for Larimer County, Colorado. It was in force for 3 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 3, 2005, 2:48 PM MDT (20:48 UTC)
Expired
Jun 3, 2005, 5:45 PM MDT
In force
3 hr
Issued by
NWS Denver/Boulder, CO
Area
Counties, with a storm outline in the text

County Larimer County, CO

The radar

The Denver radar (KFTG), 78 km from the middle of the area, began a volume at 20:50 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, 8.8 hours before the alert went out and 167 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.

Skew-T log-pSkew-T log-p diagram, Denver, CO at 12:00Z on 2005-06-03Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 17 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Denver, CO at 12:00Z on 2005-06-03The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 29 square meters per square second.1939587897117Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
17 J/kg
Mixed-layer CIN
-149 J/kg
Mixed-layer LCL
1341 m above ground
0-6 km bulk shear
35 kt
0-1 km storm-relative helicity
29 m²/s²
0-3 km storm-relative helicity
115 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
WGUS55 KBOU 032050
FFWBOU
COC069-032345-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE DENVER CO
248 PM MDT FRI JUN 3 2005

THE NATIONAL WEATHER SERVICE IN DENVER HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  SOUTHEASTERN LARIMER COUNTY IN NORTH CENTRAL COLORADO

* UNTIL 545 PM MDT

* AT 245 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  VERY HEAVY RAIN FROM A THUNDERSTORM 3 MILES NORTHWEST OF
  BERTHOUD...OR ABOUT 15 MILES SOUTH OF FORT COLLINS. THIS STORM WAS
  MOVING NORTHEAST AT 15 MPH.

* LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO LOVELAND
  AND BERTHOUD.

DOPPLER RADAR ESTIMATES THAT RAIN FROM THE STORM IS FALLING AT THE 
RATE OF 2 TO 3 INCHES PER HOUR.

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.

EXCESSIVE RUNOFF FROM THIS STORM WILL CAUSE FLASH FLOODING OF SMALL
CREEKS AND STREAMS...HIGHWAYS AND UNDERPASSES. ADDITIONALLY...COUNTRY
ROADS AND FARMLANDS ALONG THE BANKS OF CREEKS AND STREAMS AND OTHER 
LOW LYING AREAS ARE SUBJECT TO FLASH FLOODING.

LAT...LON 4027 10526 4025 10505 4033 10505 4034 10495
      4047 10495 4045 10518

$$

BARJENBRUCH
2 follow-up statements
000 
WGUS75 KBOU 032137
FFSBOU

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE DENVER CO
336 PM MDT FRI JUN 3 2005

COC069-032345-
LARIMER CO-
336 PM MDT FRI JUN 3 2005

...A FLASH FLOOD WARNING CONTINUES UNTIL 545 PM MDT FOR SOUTHEASTERN
LARIMER COUNTY...

AT 334 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED VERY
HEAVY RAIN FROM A THUNDERSTORM 8 MILES EAST OF LOVELAND...OR ABOUT 8
MILES WEST OF GREELEY. THIS STORM WAS MOVING NORTHEAST AT 15 MPH.

LOCATIONS REMAINING IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
LOVELAND AND BERTHOUD.

DOPPLER RADAR ESTIMATES THAT AROUND 2 INCHES OF RAIN HAVE FALLEN 
FROM THIS STORM FROM THE BERTHOUD AREA TO THE INTERSECTION OF 
HIGHWAY 34 AND INTERSTATE 25 IN THE LAST HOUR. LAW ENFORCEMENT HAS 
REPORTED FLOODING ALONG HIGHWAY 402 EAST OF US 287 AND ON INTERSTATE 
25 EAST OF LOVELAND.

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.

DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE
ROADWAY AS THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO
CROSS SAFELY. DO NOT UNDERESTIMATE THE POWER OF FLOOD WATERS. ONLY A
FEW INCHES OF RAPIDLY FLOWING WATER CAN QUICKLY CARRY AWAY YOUR
VEHICLE. TURN AROUND...DO NOT DROWN.

LAT...LON 4027 10526 4025 10505 4033 10505 4034 10495
      4047 10495 4045 10518

$$

GIMMESTAD
000 
WGUS75 KBOU 032216
FFSBOU

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE DENVER CO
416 PM MDT FRI JUN 3 2005

COC069-032226-
LARIMER CO-
416 PM MDT FRI JUN 3 2005

...THE FLASH FLOOD WARNING FOR SOUTHEASTERN LARIMER COUNTY IS
CANCELLED...

THE STORM THAT PROMPTED THE WARNING HAS EXITED THE AREA.

THE LARIMER COUNTY SHERIFF REPORTED THAT FLOOD WATERS HAVE SUBSIDED 
AND FLASH FLOODING IS NO LONGER EXPECTED.

LAT...LON 4027 10526 4025 10505 4033 10505 4034 10495
      4047 10495 4045 10518

$$

BARJENBRUCH

The office that day

Everything else NWS Denver/Boulder, CO issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jun 2, 6:16 PM MDTTornado WarningBOULincoln44 min
Jun 2, 6:59 PM MDTTornado WarningBOULincoln20 min
Jun 2, 7:00 PM MDTSevere Thunderstorm WarningBOUElbert60 min
Jun 2, 7:06 PM MDTTornado WarningBOULincoln39 min
Jun 2, 7:43 PM MDTTornado WarningBOULincoln32 min
Jun 2, 7:57 PM MDTSevere Thunderstorm WarningBOUElbert33 min
Jun 2, 8:08 PM MDTTornado WarningBOUElbert, Lincoln52 min
Jun 2, 9:03 PM MDTSevere Thunderstorm WarningBOULincoln37 min
Jun 3, 2:49 PM MDTSevere Thunderstorm WarningBOULarimer, Weld41 min
Jun 3, 4:22 PM MDTSevere Thunderstorm WarningBOUArapahoe, Denver53 min
Jun 3, 4:31 PM MDTFlash Flood WarningBOUArapahoe, Denver119 min
Jun 3, 4:36 PM MDTTornado WarningBOUArapahoe, Denver39 min
Jun 3, 5:12 PM MDTTornado WarningBOUAdams, Arapahoe48 min
Jun 3, 5:21 PM MDTFlash Flood WarningBOUDouglas3 hr
Jun 3, 5:59 PM MDTSevere Thunderstorm WarningBOUArapahoe61 min

Nearby

Flash Flood Warnings in Colorado, 2005Every flash flood warning in 2005

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.