Flash Flood Warning 13, NWS Denver/Boulder, CO

Issued

Jul 6, 2012, 8:56 PM MDT (02:56 UTC)

Expired

Jul 6, 2012, 11:45 PM MDT

In force

3 hr

Issued by

NWS Denver/Boulder, CO

Area

Storm-based polygon

Flood severity

None

County Larimer County, CO

The Cheyenne radar (KCYS), 76 km from the middle of the area, began a volume at 02:55 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.

988 
WGUS55 KBOU 070256
FFWBOU
COC069-070545-
/O.NEW.KBOU.FF.W.0013.120707T0256Z-120707T0545Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE DENVER CO
856 PM MDT FRI JUL 6 2012

THE NATIONAL WEATHER SERVICE IN DENVER HAS ISSUED A

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

* UNTIL 1145 PM MDT

* AT 852 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  VERY HEAVY RAIN FROM A THUNDERSTORM 4 MILES SOUTHWEST OF           
  MISHOWAKA...OR 19 MILES WEST OF FORT COLLINS. THE STORMS WERE      
  MOVING NORTHWEST AT 20 MPH.

* LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO THE HIGH   
  PARK BURN AREA...POUDRE PARK...MISHOWAKA AND BUCKHORN MOUNTAIN.

ADDITIONAL THUNDERSTORMS WITH MODERATE TO HEAVY RAIN WILL BE MOVING 
OVER ALREADY SATURATED SOILS WHICH PRODUCED SEVERAL MUDSLIDES AND 
MINOR FLOODING IN THE HIGH PARK BURN AREA EARLIER THIS AFTERNOON.

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.

EXCESSIVE RUNOFF FROM THIS STORM WILL CAUSE FLASH FLOODING OF CREEKS
AND STREAMS...ROADS...AND ROADSIDE CULVERTS. THE HEAVY RAINS COULD 
ALSO TRIGGER ROCK SLIDES OR DEBRIS FLOWS IN THE HIGH PARK BURN AREA.


&&

LAT...LON 4063 10555 4070 10548 4075 10524 4058 10519
      4058 10547

$$

682 
WGUS75 KBOU 070429
FFSBOU

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE DENVER CO
1029 PM MDT FRI JUL 6 2012

COC069-070545-
/O.CON.KBOU.FF.W.0013.000000T0000Z-120707T0545Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
LARIMER CO-
1029 PM MDT FRI JUL 6 2012

...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 1145 PM MDT FOR
CENTRAL LARIMER COUNTY...

AT 1024 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED 
HEAVY RAIN FROM THUNDERSTORMS PASSING OVER THE HIGH PARK BURN AREA 
IN CENTRAL LARIMER COUNTY. THE HEAVIEST RAINFALL INDICATED ON RADAR 
WAS OCCURRING NEAR POUDRE PARK...OR ABOUT 13 MILES NORTHWEST OF FORT 
COLLINS. THESE STORMS WERE MOVING NORTHWEST AT 10 MPH.

LOCATIONS REMAINING IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
POUDRE PARK...MISHOWAKA AND BUCKHORN MOUNTAIN.

DOPPLER RADAR ESTIMATES THAT AROUND A HALF INCH OF RAIN HAS FALLEN 
ON PORTIONS OF THE HIGH PARK BURN AREA IN THE LAST HOUR. ANOTHER 
HALF INCH OF RAIN COULD FALL ON THE HIGH PARK BURN AREA IN THE NEXT 
HOUR. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

EXCESSIVE RUNOFF FROM THESE STORMS 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 BURN 
AREA.

BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLOODS AND FLASH FLOODS. IF FLASH FLOODING IS OBSERVED ACT
QUICKLY. MOVE UP TO HIGHER GROUND TO ESCAPE FLOOD WATERS. DO NOT STAY
IN AREAS SUBJECT TO FLOODING WHEN WATER BEGINS RISING.

&&

LAT...LON 4063 10555 4070 10548 4075 10524 4058 10519
      4058 10547

$$


BAKER

Flash Flood Warnings in Colorado, 2012Every flash flood warning in 2012

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.