Alert archive / Colorado / Flash Flood Warnings in 2004
Flash Flood Warning 16, NWS Denver/Boulder, CO
NWS Denver/Boulder, CO issued this flash flood warning at Jul 15, 2004, 10:19 PM MDT for Logan 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 15, 2004, 10:19 PM MDT (04:19 UTC)
- Expired
- Jul 16, 2004, 1:30 AM MDT
- In force
- 3 hr
- Issued by
- NWS Denver/Boulder, CO
- Area
- Counties, with a storm outline in the text
County Logan County, CO
The radar
The Denver radar (KFTG), 128 km from the middle of the area, began a volume at 04:19 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, 4.3 hours before the alert went out and 83 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
- 181 J/kg
- Mixed-layer CIN
- -1 J/kg
- Mixed-layer LCL
- 3171 m above ground
- 0-6 km bulk shear
- 1 kt
- 0-1 km storm-relative helicity
- -2 m²/s²
- 0-3 km storm-relative helicity
- 11 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 160420 FFWBOU COC075-160715- BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE DENVER CO 1019 PM MDT THU JUL 15 2004 THE NATIONAL WEATHER SERVICE IN DENVER HAS ISSUED A * FLASH FLOOD WARNING FOR... SOUTHWEST LOGAN COUNTY IN NORTHEAST COLORADO * UNTIL 130 AM MDT * AT 1013 PM MDT...THE LOGAN COUNTY SHERIFF REPORTED 2 TO 4 FEET OF WATER FLOWING ACROSS COUNTY ROAD 18 TO THE EAST AND TO THE WEST OF WILLARD. RAINFALL IN THE AREA WAS DECREASING...BUT RUNOFF FROM EARLIER THUNDERSTORMS WILL CAUSE SAND CREEK AND OTHER SMALL STREAMS TO OVERFLOW THEIR BANKS FOR THE NEXT FEW HOURS. LOCATIONS IN THE WARNING INCLUDE...BUT ARE NOT LIMITED TO...LOGAN CORNERS...PAWNEE PASS AND WILLARD. 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. BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE DANGERS OF FLOODS AND FLASH FLOODS. DO NOT STAY IN AREAS SUBJECT TO FLOODING WHEN WATER BEGINS RISING. LAT...LON 4063 10358 4053 10356 4052 10336 4066 10326 $$ BARJENBRUCH
1 follow-up statement
000 WGUS75 KBOU 160450 FFSBOU COC075-160505- FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE DENVER CO 1050 PM MDT THU JUL 15 2004 ...THE FLASH FLOOD WARNING FOR SOUTHWEST LOGAN COUNTY HAS BEEN CANCELLED... THE LOGAN COUNTY SHERIFF REPORTED ONLY 2 TO 4 INCHES OF WATER ON COUNTY ROAD 18 TO THE EAST AND WEST OF WILLARD. THERE WAS NOT 2 TO 4 FEET OF WATER FLOWING ACROSS THE ROAD. LAT...LON 4063 10358 4053 10356 4052 10336 4066 10326 $$ BARJENBRUCH
The office that day
Everything else NWS Denver/Boulder, CO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 15, 7:11 PM MDT | Severe Thunderstorm Warning | BOU | Phillips | 49 min |
| Jul 16, 2:37 PM MDT | Flash Flood Warning | BOU | Douglas | 113 min |
| Jul 16, 3:20 PM MDT | Flash Flood Warning | BOU | Park | 60 min |
Nearby
Flash Flood Warnings in Colorado, 2004Every flash flood warning in 2004
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.