Alert archive / Colorado / Flash Flood Warnings in 2003
Flash Flood Warning 8, NWS Denver/Boulder, CO
NWS Denver/Boulder, CO issued this flash flood warning at Jun 18, 2003, 7:57 PM MDT for Adams 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 18, 2003, 7:57 PM MDT (01:57 UTC)
- Expired
- Jun 18, 2003, 11:00 PM MDT
- In force
- 3 hr
- Issued by
- NWS Denver/Boulder, CO
- Area
- Counties, with a storm outline in the text
County Adams County, CO
The radar
The Denver radar (KFTG), 58 km from the middle of the area, began a volume at 01:59 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 00:00Z, 2.0 hours before the alert went out and 56 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
- 534 J/kg
- Mixed-layer CIN
- -3 J/kg
- Mixed-layer LCL
- 1264 m above ground
- 0-6 km bulk shear
- 15 kt
- 0-1 km storm-relative helicity
- 5 m²/s²
- 0-3 km storm-relative helicity
- 58 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 190200 FFWBOU COC001-190500- BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE DENVER CO 757 PM MDT WED JUN 18 2003 THE NATIONAL WEATHER SERVICE IN DENVER HAS ISSUED A * FLASH FLOOD WARNING FOR... EASTERN ADAMS COUNTY IN NORTHEAST COLORADO * UNTIL 1100 PM MDT * AT 757 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED VERY HEAVY RAIN 11 MILES NORTHEAST OF SHAMROCK...OR ABOUT 16 MILES SOUTH OF FORT MORGAN. THE STORM PRODUCING THE HEAVY RAIN WAS MOVING SOUTHWEST AT 10 MPH. LOCATIONS IN THE WARNING INCLUDE...BUT ARE NOT LIMITED TO...SHAMROCK AND MUDDY CREEK. 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. LAT...LON 4000 10399 3975 10403 3975 10371 4000 10371 $$ ENTREKIN
2 follow-up statements
000 WGUS75 KBOU 190333 FFSBOU COC001-190500- FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE DENVER CO 934 PM MDT WED JUN 18 2003 A FLASH FLOOD WARNING REMAINS IN EFFECT FOR EASTERN ADAMS COUNTY UNTIL 1100 PM MDT. AT 931 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED VERY HEAVY RAIN 11 MILES SOUTHWEST OF SHAMROCK...OR ABOUT 35 MILES SOUTH OF FORT MORGAN. THE STORM PRODUCING THE HEAVY RAIN WAS MOVING SOUTHWEST AT 5 MPH. LOCATIONS REMAINING IN THE WARNING INCLUDE...BUT ARE NOT LIMITED TO...SHAMROCK. DOPPLER RADAR ESTIMATED THAT BETWEEN 3 AND 5 INCHES OF RAIN HAVE FALLEN BETWEEN LEADER AND SHAMROCK IN THE LAST 2 HOURS. A FLASH FLOOD WARNING MEANS THAT FLOODING IS IMMINENT OR OCCURRING. IF YOU ARE IN THE WARNING AREA MOVE TO HIGHER GROUND IMMEDIATELY. RESIDENTS LIVING ALONG STREAMS AND CREEKS SHOULD TAKE IMMEDIATE PRECAUTIONS TO PROTECT LIFE AND PROPERTY. DO NOT ATTEMPT TO CROSS SWIFTLY FLOWING WATERS OR WATERS OF UNKNOWN DEPTH BY FOOT OR BY AUTOMOBILE. IF YOUR VEHICLE STALLS ABANDON IT IMMEDIATELY AND SEEK HIGHER GROUND. $$ SWE
000 WGUS75 KBOU 190455 FFSBOU COC001-190500- FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE DENVER CO 1050 PM MDT WED JUN 18 2003 THE FLASH FLOOD WARNING WILL BE ALLOWED TO EXPIRE FOR EASTERN ADAMS COUNTY AT 1045 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR STILL INDICATED SOME HEAVY RAIN BETWEEN LEADER AND SHAMROCK. RAINFALL RATES WILL BE UP TO AN INCH IN ONE HOUR THROUGH MIDNIGHT. THE CURRENT HEAVY RAIN HAS SHIFTED EAST FROM THE HEAVIER RAIN EARLIER TONIGHT...SO NO ADDITIONAL MAJOR FLOODING IS EXPECTED. DOPPLER RADAR ESTIMATED THAT BETWEEN 3 AND 5 INCHES OF RAIN HAVE FALLEN BETWEEN LEADER AND SHAMROCK IN THE LAST 3 HOURS. MINOR CREEK AND ROAD FLOODING MAY STILL OCCUR THROUGH 2 AM. $$ SWE
The office that day
Everything else NWS Denver/Boulder, CO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 18, 8:20 PM MDT | Flash Flood Warning | BOU | Larimer | 2 hr |
| Jun 19, 2:56 PM MDT | Flash Flood Warning | BOU | Douglas | 2 hr |
Nearby
Flash Flood Warnings in Colorado, 2003Every flash flood warning in 2003
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.