Alert archive / Colorado / Flash Flood Warnings in 2010
Flash Flood Warning 21, NWS Denver/Boulder, CO
NWS Denver/Boulder, CO issued this flash flood warning at Aug 6, 2010, 4:38 PM MDT for Lincoln County, Colorado. It was in force for 76 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Aug 6, 2010, 4:38 PM MDT (22:38 UTC)
- Expired
- Aug 6, 2010, 5:54 PM MDT
- In force
- 76 min
- Issued by
- NWS Denver/Boulder, CO
- Area
- Storm-based polygon
- Flood severity
- None
County Lincoln County, CO
The radar
The Denver radar (KFTG), 86 km from the middle of the area, began a volume at 22:42 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, 10.6 hours before the alert went out and 55 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
- 111 J/kg
- Mixed-layer CIN
- -186 J/kg
- Mixed-layer LCL
- 1507 m above ground
- 0-6 km bulk shear
- 20 kt
- 0-1 km storm-relative helicity
- -12 m²/s²
- 0-3 km storm-relative helicity
- -1 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
179
WGUS55 KBOU 062238
FFWBOU
COC073-070130-
/O.NEW.KBOU.FF.W.0021.100806T2238Z-100807T0130Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE DENVER CO
438 PM MDT FRI AUG 6 2010
THE NATIONAL WEATHER SERVICE IN DENVER HAS ISSUED A
* FLASH FLOOD WARNING FOR...
NORTH CENTRAL LINCOLN COUNTY IN EAST CENTRAL COLORADO
* UNTIL 730 PM MDT
* AT 435 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
VERY HEAVY RAIN FROM A THUNDERSTORM OVER EXTREME NORTH CENTRAL
LINCOLN COUNTY...OR 19 MILES NORTH OF LIMON. THIS STORM NEARLY
STATIONARY.
* THE STORM PRODUCING VERY HEAVY RAIN WILL REMAIN OVER MAINLY RURAL
AREAS OF THE WARNED COUNTY.
DOPPLER RADAR ESTIMATES THAT AROUND 3 INCHES OF RAIN HAS FALLEN FROM
THIS STORM IN THE LAST 90 MINUTES NEAR VEGA CREEK...ALONG HIGHWAY 71.
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 3944 10371 3946 10372 3956 10371 3956 10349
3945 10350 3945 10351
$$2 follow-up statements
526
WGUS75 KBOU 062320
FFSBOU
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE DENVER CO
520 PM MDT FRI AUG 6 2010
COC073-070130-
/O.CON.KBOU.FF.W.0021.000000T0000Z-100807T0130Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
LINCOLN CO-
520 PM MDT FRI AUG 6 2010
...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 730 PM MDT FOR NORTH
CENTRAL LINCOLN COUNTY...
AT 450 PM MDT...LAW ENFORCEMENT OFFICIALS REPORTED 2 INCHES OF WATER
ON HIGHWAY 71 IN NORTHWEST LINCOLN COUNTY. DOPPLER RADAR ESTIMATES
THAT 3 TO 4 INCHES OF RAIN HAVE FALLEN FROM THIS STORM ALONG HIGHWAY
71 IN THE LAST TWO HOURS.
AT 515 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED THE
THUNDERSTORM WITH HEAVY RAIN WAS NO LONGER STATIONARY IN NORTH
CENTRAL LINCOLN COUNTY. THE STORM WAS ABOUT 11 MILES NORTHEAST OF
LIMON MOVING SOUTH AT 10 MPH.
THE STORM PRODUCING HEAVY RAIN WILL MOVE OVER MAINLY RURAL AREAS OF
THE WARNED COUNTY.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
MOST FLASH FLOOD DEATHS OCCUR IN AUTOMOBILES. DO NOT ATTEMPT TO CROSS
BRIDGES...DIPS...OR OTHER LOW SPOTS IF WATER COVERS THE ROADWAY.
NEVER TRY TO CROSS A FLOWING STREAM...EVEN A SMALL ONE...ON FOOT. TO
ESCAPE RISING WATER CLIMB TO HIGHER GROUND.
&&
LAT...LON 3944 10371 3946 10372 3956 10371 3956 10349
3945 10350 3945 10351
$$175
WGUS75 KBOU 062354
FFSBOU
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE DENVER CO
554 PM MDT FRI AUG 6 2010
COC073-070004-
/O.CAN.KBOU.FF.W.0021.000000T0000Z-100807T0130Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
LINCOLN CO-
554 PM MDT FRI AUG 6 2010
...THE FLASH FLOOD WARNING HAS BEEN CANCELLED FOR NORTH CENTRAL
LINCOLN COUNTY...
THE STORM THAT PROMPTED THE WARNING HAS WEAKENED AND IS NO LONGER
EXPECTED TO PRODUCE FLASH FLOODING.
LAT...LON 3944 10371 3946 10372 3956 10371 3956 10349
3945 10350 3945 10351
$$The office that day
Everything else NWS Denver/Boulder, CO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 5, 6:08 PM MDT | Areal Flood Advisory | BOU | Elbert | 82 min |
| Aug 5, 7:16 PM MDT | Special Weather Statement | BOU | Phillips, Washington | 59 min |
| Aug 6, 3:36 PM MDT | Areal Flood Advisory | BOU | Lincoln | 84 min |
| Aug 6, 4:07 PM MDT | Special Weather Statement | BOU | Broomfield | 38 min |
| Aug 6, 4:56 PM MDT | Areal Flood Advisory | BOU | Adams, Denver | 63 min |
Nearby
Flash Flood Warnings in Colorado, 2010Every flash flood warning in 2010
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.