Alert archive / Colorado / Flash Flood Warnings in 2002
Flash Flood Warning 5, NWS Denver/Boulder, CO
NWS Denver/Boulder, CO issued this flash flood warning at Jul 3, 2002, 1:01 PM MDT for Douglas 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
- Jul 3, 2002, 1:01 PM MDT (19:01 UTC)
- Expired
- Jul 3, 2002, 4:00 PM MDT
- In force
- 3 hr
- Issued by
- NWS Denver/Boulder, CO
- Area
- Counties, with a storm outline in the text
County Douglas County, CO
The radar
The Denver radar (KFTG), 66 km from the middle of the area, began a volume at 19:05 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, 7.0 hours before the alert went out and 157 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
- 295 J/kg
- Mixed-layer CIN
- -378 J/kg
- Mixed-layer LCL
- 2757 m above ground
- 0-6 km bulk shear
- 8 kt
- 0-1 km storm-relative helicity
- -30 m²/s²
- 0-3 km storm-relative helicity
- -17 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000
WGUS55 KBOU 031901
FFWDEN
COC035-032200-
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE DENVER CO
1257 PM MDT WED JUL 3 2002
THE NATIONAL WEATHER SERVICE IN DENVER HAS ISSUED A
* FLASH FLOOD WARNING FOR...
CENTRAL DOUGLAS COUNTY IN NORTHEAST COLORADO
* INCLUDING THE DRAINAGE AREA OF EAST PLUM CREEK AND INTERSTATE 25
OVER THE PALMER DIVIDE.
* UNTIL 400 PM MDT
* AT 1257 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
VERY HEAVY RAIN 6 MILES NORTH OF LARKSPUR...OR ABOUT 27 MILES NORTH
OF COLORADO SPRINGS. THE STORM PRODUCING THE HEAVY RAIN WAS MOVING
NORTH AT 5 MPH.
LOCATIONS IN THE WARNING INCLUDE...BUT ARE NOT LIMITED TO...LARKSPUR.
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. IF YOUR VEHICLE STALLS ABANDON IT IMMEDIATELY AND SEEK
HIGHER GROUND.
DOPPLER RADAR ESTIMATED THAT UP TO 3.5 INCHES OF RAIN HAS FALLEN
ABOUT 3 MILES NORTH OF LARKSPUR SINCE 11:30 AM MDT.
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 3920 10493 3915 10489 3918 10476 3933 10478
3936 10490 3931 10497
RJK3 follow-up statements
000
WGUS55 KBOU 031957
FFSDEN
COC035-032200-
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE DENVER CO
157 PM MDT WED JUL 3 2002
...THE FLASH FLOOD WARNING FOR CENTRAL DOUGLAS COUNTY REMAINS IN
EFFECT UNTIL 400 PM...
THE FLASH FLOOD WARNING FOR CENTRAL DOUGLAS COUNTY REMAINS IN EFFECT
THROUGH 4 PM. THIS INCLUDES THE DRAINAGE AREA OF EAST PLUM CREEK
AND INTERSTATE 25 OVER THE PALMER DIVIDE.
AT 157 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
HEAVY RAIN PRODUCING THUNDERSTORM 7 MILES SOUTHWEST OF CASTLE ROCK
THE STORM PRODUCING THE HEAVY RAIN WAS MOVING NORTH-NORTHWEST AT 7
MPH.
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. IF YOUR VEHICLE STALLS ABANDON IT IMMEDIATELY AND SEEK
HIGHER GROUND.
DOPPLER RADAR ESTIMATED THAT UP TO 3.5 INCHES OF RAIN HAS FALLEN
ABOUT 3 MILES NORTH OF LARKSPUR SINCE 11:30 AM MDT. ANOTHER AREA OF
RAINFALL WAS ESTIMATED UP TO 2.5 INCHES ABOUT 9 MILES
SOUTH-SOUTHWEST OF CASTLE ROCK.
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 3920 10493 3915 10489 3918 10476 3933 10478
3936 10490 3931 10497
RJK000
WGUS55 KBOU 032053
FFSDEN
COC035-032200-
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE DENVER CO
255 PM MDT WED JUL 3 2002
...THE FLASH FLOOD WARNING FOR CENTRAL DOUGLAS COUNTY REMAINS IN
EFFECT UNTIL 400 PM...
THE FLASH FLOOD WARNING FOR CENTRAL DOUGLAS COUNTY REMAINS IN EFFECT
THROUGH 4 PM. THIS INCLUDES THE DRAINAGE AREA OF EAST PLUM CREEK
AND INTERSTATE 25 OVER THE PALMER DIVIDE.
AT 255 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
HEAVY RAIN PRODUCING THUNDERSTORM 6 MILES SOUTH-SOUTHWEST OF CASTLE
ROCK. THE STORM PRODUCING THE HEAVY RAIN WAS MOVING VERY LITTLE AND
IS PRODUCING HAIL AT LEAST THREE QUARTERS OF AN INCH IN DIAMETER.
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. IF YOUR VEHICLE STALLS ABANDON IT IMMEDIATELY AND SEEK
HIGHER GROUND.
DOPPLER RADAR ESTIMATED THAT 4 TO 5 INCHES OF RAIN HAS FALLEN IN AN
AREA 7 MILES NORTH OF LARKSPUR SINCE 11:30 AM MDT. RADAR INDICATES
THE ENTIRE AREA BETWEEN 2 MILES SOUTH OF CASTLE ROCK AND LARKSPUR
HAVE HAD AT LEAST 2 INCHES OF RAIN.
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 3920 10493 3915 10489 3918 10476 3933 10478
3936 10490 3931 10497
RJK000
WGUS55 KBOU 032158
FFSDEN
COC035-032204-
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE DENVER CO
400 PM MDT WED JUL 3 2002
...THE FLASH FLOOD WARNING FOR CENTRAL DOUGLAS COUNTY HAD EXPIRED AT
400 PM...
THE FLASH FLOOD WARNING FOR CENTRAL DOUGLAS COUNTY HAS EXPIRED AT 400
PM.
AT 400 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
HEAVY RAIN PRODUCING THUNDERSTORMS OVER DOUGLAS COUNTY HAD DECREASED
CONSIDERABLY AND DRIFTED NORTHWARD.
DOPPLER RADAR ESTIMATED THAT FROM 3-5 INCHES OF RAIN HAD FALLEN IN
THE AREA FROM CASTLE ROCK TO LARKSPUR OF CENTRAL DOUGLAS COUNTY.
SOME FLOODING WAS REPORTED IN THE MOUNTAIN RANCH SUBDIVISION NEAR
CASTLE ROCK.
LAT...LON 3920 10493 3915 10489 3918 10476 3933 10478
3936 10490 3931 10497
RJKThe office that day
Everything else NWS Denver/Boulder, CO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 2, 7:37 PM MDT | Severe Thunderstorm Warning | BOU | Elbert | 53 min |
| Jul 2, 11:49 PM MDT | Severe Thunderstorm Warning | BOU | Arapahoe, Denver, Jefferson | 56 min |
| Jul 3, 12:05 AM MDT | Flash Flood Warning | BOU | Denver, Jefferson | 115 min |
| Jul 3, 12:32 PM MDT | Flash Flood Warning | BOU | Jefferson | 118 min |
| Jul 3, 2:05 PM MDT | Severe Thunderstorm Warning | BOU | Weld | 55 min |
| Jul 3, 2:29 PM MDT | Severe Thunderstorm Warning | BOU | Douglas | 61 min |
| Jul 3, 2:31 PM MDT | Severe Thunderstorm Warning | BOU | Weld | 59 min |
| Jul 3, 3:23 PM MDT | Severe Thunderstorm Warning | BOU | Weld | 52 min |
| Jul 3, 3:51 PM MDT | Severe Thunderstorm Warning | BOU | Larimer | 84 min |
| Jul 3, 4:22 PM MDT | Flash Flood Warning | BOU | Douglas, Jefferson, Park | 3 hr |
Nearby
Flash Flood Warnings in Colorado, 2002Every flash flood warning in 2002
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.