Alert archive / Colorado / Flash Flood Warnings in 2015
Flash Flood Warning 21, NWS Denver/Boulder, CO
NWS Denver/Boulder, CO issued this flash flood warning at Jun 15, 2015, 11:01 PM MDT for Elbert County, Colorado. It was in force for 4 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 15, 2015, 11:01 PM MDT (05:01 UTC)
- Expired
- Jun 16, 2015, 3:00 AM MDT
- In force
- 4 hr
- Issued by
- NWS Denver/Boulder, CO
- Area
- Storm-based polygon
- Flood severity
- None
County Elbert County, CO
The radar
The Denver radar (KFTG), 40 km from the middle of the area, began a volume at 05:01 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 (KDEN), launched 00:00Z, 5.0 hours before the alert went out and 99 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
- 560 J/kg
- Mixed-layer CIN
- -10 J/kg
- Mixed-layer LCL
- 1168 m above ground
- 0-6 km bulk shear
- 28 kt
- 0-1 km storm-relative helicity
- 50 m²/s²
- 0-3 km storm-relative helicity
- 146 m²/s²
- Significant tornado parameter
- 0.1
- Supercell composite
- 1.8
The text
As transmitted, in the capitals the NWS used until 2016.
126
WGUS55 KBOU 160501
FFWBOU
COC039-160900-
/O.NEW.KBOU.FF.W.0021.150616T0501Z-150616T0900Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE DENVER CO
1101 PM MDT MON JUN 15 2015
THE NATIONAL WEATHER SERVICE IN DENVER HAS ISSUED A
* FLASH FLOOD WARNING FOR...
NORTH CENTRAL ELBERT COUNTY IN EAST CENTRAL COLORADO...
* UNTIL 300 AM MDT
* AT 1058 PM MDT...DOPPLER RADAR INDICATED A THUNDERSTORM PRODUCING
HEAVY RAIN 8 MILES SOUTHWEST OF DEER TRAIL. THE STORM HAS BEEN
SATIONARY DURING THE PAST HOUR. RADAR INDICATED IN EXCESS OF THREE
INCHES OF RAIN MAY HAVE ALREADY FALLEN. FLASH FLOODING IS EXPECTED
TO BEGIN SHORTLY. ADDITIONAL STORMS ARE EXPECTED TO TRACK OVER
THIS SAME AREA THROUGH MIDNIGHT.
* FLASH FLOODING WILL REMAIN OVER MAINLY RURAL AREAS OF NORTH CENTRAL
ELBERT COUNTY.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
MOVE TO HIGHER GROUND NOW. ACT QUICKLY TO PROTECT YOUR LIFE.
EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL
CREEKS AND STREAMS...COUNTRY ROADS...AS WELL AS FARMLAND AS WELL AS
OTHER DRAINAGE AREAS AND LOW LYING SPOTS.
&&
LAT...LON 3943 10434 3956 10434 3956 10420 3946 10417
$$
ENTREKIN3 follow-up statements
202 WGUS75 KBOU 160540 FFSBOU FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE DENVER CO 1140 PM MDT MON JUN 15 2015 COC039-160900- /O.CON.KBOU.FF.W.0021.000000T0000Z-150616T0900Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ ELBERT CO- 1140 PM MDT MON JUN 15 2015 ...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 300 AM MDT FOR NORTH CENTRAL ELBERT COUNTY... AT 1132 PM MDT...DOPPLER RADAR INDICATED ANOTHER ROUND OF THUNDERSTORMS WILL MOVE INTO THE FLASH FLOOD WARNING AREA FROM NOW UNTIL 1 AM MDT. UP TO FOUR INCHES OF RAIN MAY HAVE ALREADY FALLEN AND THERE IS THE POTENTIAL FOR ANOTHER INCH OF RAIN THROUGH 1 AM. FLASH FLOODING WILL REMAIN OVER MAINLY RURAL AREAS OF NORTH CENTRAL ELBERT COUNTY...ESPECIALY ALONG WEST BIJOU CREEK IN NORTH CENTRAL ELBERT COUNTY. PRECAUTIONARY/PREPAREDNESS ACTIONS... MOVE TO HIGHER GROUND NOW. ACT QUICKLY TO PROTECT YOUR LIFE. EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL CREEKS AND STREAMS...COUNTRY ROADS...AS WELL AS FARMLAND AS WELL AS OTHER DRAINAGE AREAS AND LOW LYING SPOTS. BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE DANGERS OF FLOODING. && LAT...LON 3943 10434 3956 10434 3956 10420 3946 10417 $$ ENTREKIN
775 WGUS75 KBOU 160644 FFSBOU FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE DENVER CO 1244 AM MDT TUE JUN 16 2015 COC039-160900- /O.CON.KBOU.FF.W.0021.000000T0000Z-150616T0900Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ ELBERT CO- 1244 AM MDT TUE JUN 16 2015 ...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 300 AM MDT FOR NORTH CENTRAL ELBERT COUNTY... AT 1238 AM MDT...DOPPLER RADAR INDICATED THUNDERSTORMS HAVE WEAKENED AND PUSHED EAST OF THE FLASH FLOOD WARNING AREA. RADAR INDICATED IN EXCESS OF 4 INCHES OF RAIN MAY HAVE FALLEN. DESPITE THE ENDING OF RAINFALL....FLASH FLOODING MAY STILL BE OCCURRING. FLASH FLOODING WILL REMAIN OVER MAINLY RURAL AREAS OF NORTH CENTRAL ELBERT COUNTY...ESPECIALLY ALONG WEST BIJOU CREEK. OTHER STREAMS AND DRAINAGES IN THE WARNING INCLUDE...COMANCHE CREEK AND RATTLESNAKE CREEK. PRECAUTIONARY/PREPAREDNESS ACTIONS... MOVE TO HIGHER GROUND NOW. ACT QUICKLY TO PROTECT YOUR LIFE. EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL CREEKS AND STREAMS...COUNTRY ROADS...AS WELL AS FARMLAND AS WELL AS OTHER DRAINAGE AREAS AND LOW LYING SPOTS. BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE DANGERS OF FLOODING. && LAT...LON 3943 10434 3956 10434 3956 10420 3946 10417 $$ ENTREKIN
172 WGUS75 KBOU 160810 FFSBOU FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE DENVER CO 210 AM MDT TUE JUN 16 2015 COC039-160818- /O.CAN.KBOU.FF.W.0021.000000T0000Z-150616T0900Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ ELBERT CO- 210 AM MDT TUE JUN 16 2015 ...THE FLASH FLOOD WARNING FOR NORTH CENTRAL ELBERT COUNTY IS CANCELLED... FLOOD WATERS HAVE RECEDED...AND ARE NO LONGER EXPECTED TO POSE A THREAT TO LIFE OR PROPERTY. PLEASE CONTINUE TO HEED ANY ROAD CLOSURES AS THERE STILL MAY BE QUITE A BIT OF STANDING WATER. STORMS HAVE ENDED FOR THE NIGHT ACROSS ELBERT COUNTY. AS OF 2 AM MDT...LOCAL LAW ENFORCEMENT HAS NOT REPORTED ANY RECENT FLOODING PROBLEMS ACROSS THE WARNING AREA. LAT...LON 3943 10434 3956 10434 3956 10420 3946 10417 $$ ENTREKIN
The office that day
Everything else NWS Denver/Boulder, CO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 15, 6:31 PM MDT | Severe Thunderstorm Warning | BOU | Park | 29 min |
| Jun 15, 8:24 PM MDT | River Flood Warning | BOU | Jefferson | 37 hr |
| Jun 15, 11:46 PM MDT | Areal Flood Advisory | BOU | Elbert | 3 hr |
| Jun 16, 2:58 PM MDT | Severe Thunderstorm Warning | BOU | Larimer, Weld | 36 min |
| Jun 16, 4:00 PM MDT | Severe Thunderstorm Warning | BOU | Larimer, Weld | 45 min |
Nearby
Flash Flood Warnings in Colorado, 2015Every flash flood warning in 2015
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.