Alert archive / Colorado / Flash Flood Warnings in 1998
Flash Flood Warning 16, NWS Denver/Boulder, CO
NWS Denver/Boulder, CO issued this flash flood warning at Jul 30, 1998, 5:00 PM MDT for Park County, Colorado. It was in force for 2 hr. No storm report in the archive falls inside the area while it was in force.
The area
The outline the Iowa Environmental Mesonet reconstructed for it; the warning itself named whole counties.
The facts
- Issued
- Jul 30, 1998, 5:00 PM MDT (23:00 UTC)
- Expired
- Jul 30, 1998, 7:00 PM MDT
- In force
- 2 hr
- Issued by
- NWS Denver/Boulder, CO
- Area
- Whole counties; the outline is the Mesonet’s reconstruction
County Park County, CO
The nearest sounding before it
Grand Junction, CO (KGJT), launched 12:00Z, 11.0 hours before the alert went out and 235 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 1824 m above ground
- 0-6 km bulk shear
- 33 kt
- 0-1 km storm-relative helicity
- 52 m²/s²
- 0-3 km storm-relative helicity
- 79 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000
TTAA00 KDEN 302301
FFWDEN
COC093-310100-
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE DENVER CO
500 PM MDT THU JUL 30 1998
THE NATIONAL WEATHER SERVICE IN DENVER HAS ISSUED A
* FLASH FLOOD WARNING FOR...
SOUTHERN PARK COUNTY IN CENTRAL COLORADO
* UNTIL 700 PM MDT
* AT 500 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
VERY HEAVY RAIN 9 MILES WEST OF 11-MILE CANYON RESERVOIR...OR ABOUT
45 MILES WEST OF COLORADO SPRINGS.
LOCATIONS IN THE WARNING INCLUDE...11-MILE CANYON RESERVOIR...ANTERO
RESERVOIR...HARTSEL AND WILKERSON PASS
RADAR RAINFALL ESTIMATES INDICATE 3.0 TO 4.0 INCHES OF RAIN HAVE
FALLEN 9 MILES WEST OF 11 MILE CANYON RESERVOIR...WITH MORE MODERATE
TO HEAVY RAIN PRODUCING THUNDERSTORMS UPSTREAM.
EXCESSIVE RUNOFF FROM THIS STORM WILL CAUSE FLASH FLOODING OF SMALL
CREEKS AND STREAMS...COUNTRY ROADS...NORMALLY DRY WASHES AND
ARROYOS...AS WELL AS FARMLAND ALONG THE BANKS OF CREEKS AND STREAMS.
EXCESSIVE RUNOFF FROM THIS STORM WILL CAUSE FLASH FLOODING OF CREEKS
AND STREAMS...ROADS AND ROADSIDE CULVERTS. THE HEAVY RAINS COULD ALSO
TRIGGER ROCK AND MUDSLIDES IN STEEP TERRAIN.
RJK
LAT...LON 3896 10608 3896 10601 3884 10588 3881 10579 3878 10565
3878 10542 3898 10539 3904 10544 3908 10571 3909 10591 3907 10615What forecasters said that day
The local office's own words before this flash flood warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
In the hours before
Special weather statement, Jul 30, 11:10 AM MDT, 5 hours 50 minutes before
COZ030-032>050-310600- SIGNIFICANT WEATHER OUTLOOK FOR NORTHEAST AND NORTH CENTRAL COLORADO NATIONAL WEATHER SERVICE DENVER CO 1110 AM MDT THU JUL 30 1998 THIS OUTLOOK PERTAINS TO THE FOLLOWING COLORADO COUNTIES ADAMS ARAPAHOE BOULDER CLEAR CREEK DENVER DOUGLAS ELBERT GILPIN GRAND JACKSON JEFFERSON LARIMER LINCOLN LOGAN MORGAN PARK PHILLIPS SEDGWICK SUMMIT WASHINGTON WELD SYNOPSIS: ABUNDANT MOISTURE WILL REMAIN IN PLACE ACROSS EASTERN COLORADO THROUGH THIS AFTERNOON AND EVENING. THE BEST INSTABILITY WILL BE FOUND IN AND NEAR THE FOOTHILLS WHERE A FEW PEAKS OF SUNSHINE WILL OCCUR. ON THE NORTHEAST PLAINS...THE AIRMASS IS QUITE STABLE AS LOW LEVEL COOL AIR HAS SPREAD IN BEHIND A SURFACE FRONT. AS DAYTIME HEATING REACTS WITH THE MOISTURE IN AND NEAR THE FOOTHILLS...THUNDERSTORMS WILL BE DEVELOPING BY 1 PM. AN UPPER LEVEL DISTURBANCE MOVING TOWARD WESTERN COLORADO NOW WILL ALSO BE APPROACHING BY LATE THIS AFTERNOON TO HELP SPARK THE DEVELOPMENT OF STORMS. WITH ABUNDANT MOISTURE IN PLACE...LOCALLY HEAVY RAINFALL WILL OCCUR IN AND NEAR THE FOOTHILLS. THIS WOULD INCLUDE THE FRONT RANGE FROM CASTLE ROCK AND DENVER NORTHWARD THROUGH FORT COLLINS. SEVERE STORMS AND LARGE HAIL WILL NOT BE A THREAT TODAY GIVEN THE CLOUD COVER AND LIMITED INSTABILITY. HOWEVER...BE ON THE LOOKOUT FOR HEAVY RAINFALL. RAINFALL RATES WITH THE STRONGER STORMS MAY EXCEED 2 INCHES PER HOUR. A FLASH FLOOD WATCH MAY BE REQUIRED FOR THE FOOTHILLS AND FRONT RANGE CITIES LATER THIS AFTERNOON. SPOTTER ACTIVATION FOR SEVERE WEATHER WILL NOT BE REQUIRED TODAY. HOWEVER...ANY REPORTS OF HEAVY RAINFAVLL WOULD BE GREATLY APPRECIATED. BARJENBRUCH
Special weather statement, Jul 30, 11:10 AM MDT, 5 hours 50 minutes before
COZ030-032>050-310600- SIGNIFICANT WEATHER OUTLOOK FOR NORTHEAST AND NORTH CENTRAL COLORADO NATIONAL WEATHER SERVICE DENVER CO 1110 AM MDT THU JUL 30 1998 THIS OUTLOOK PERTAINS TO THE FOLLOWING COLORADO COUNTIES ADAMS ARAPAHOE BOULDER CLEAR CREEK DENVER DOUGLAS ELBERT GILPIN GRAND JACKSON JEFFERSON LARIMER LINCOLN LOGAN MORGAN PARK PHILLIPS SEDGWICK SUMMIT WASHINGTON WELD SYNOPSIS: ABUNDANT MOISTURE WILL REMAIN IN PLACE ACROSS EASTERN COLORADO THROUGH THIS AFTERNOON AND EVENING. THE BEST INSTABILITY WILL BE FOUND IN AND NEAR THE FOOTHILLS WHERE A FEW PEAKS OF SUNSHINE WILL OCCUR. ON THE NORTHEAST PLAINS...THE AIRMASS IS QUITE STABLE AS LOW LEVEL COOL AIR HAS SPREAD IN BEHIND A SURFACE FRONT. AS DAYTIME HEATING REACTS WITH THE MOISTURE IN AND NEAR THE FOOTHILLS...THUNDERSTORMS WILL BE DEVELOPING BY 1 PM. AN UPPER LEVEL DISTURBANCE MOVING TOWARD WESTERN COLORADO NOW WILL ALSO BE APPROACHING BY LATE THIS AFTERNOON TO HELP SPARK THE DEVELOPMENT OF STORMS. WITH ABUNDANT MOISTURE IN PLACE...LOCALLY HEAVY RAINFALL WILL OCCUR IN AND NEAR THE FOOTHILLS. THIS WOULD INCLUDE THE FRONT RANGE FROM CASTLE ROCK AND DENVER NORTHWARD THROUGH FORT COLLINS. SEVERE STORMS AND LARGE HAIL WILL NOT BE A THREAT TODAY GIVEN THE CLOUD COVER AND LIMITED INSTABILITY. HOWEVER...BE ON THE LOOKOUT FOR HEAVY RAINFALL. RAINFALL RATES WITH THE STRONGER STORMS MAY EXCEED 2 INCHES PER HOUR. A FLASH FLOOD WATCH MAY BE REQUIRED FOR THE FOOTHILLS AND FRONT RANGE CITIES LATER THIS AFTERNOON. SPOTTER ACTIVATION FOR SEVERE WEATHER WILL NOT BE REQUIRED TODAY. HOWEVER...ANY REPORTS OF HEAVY RAINFAVLL WOULD BE GREATLY APPRECIATED. BARJENBRUCH
The office that day
Everything else NWS Denver/Boulder, CO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 29, 6:01 PM MDT | Severe Thunderstorm Warning | BOU | Arapahoe, Elbert | 29 min |
| Jul 29, 6:32 PM MDT | Severe Thunderstorm Warning | BOU | Elbert, Lincoln | 43 min |
| Jul 29, 7:13 PM MDT | Severe Thunderstorm Warning | BOU | Lincoln | 32 min |
| Jul 29, 7:39 PM MDT | Severe Thunderstorm Warning | BOU | Lincoln | 36 min |
| Jul 30, 1:41 PM MDT | Severe Thunderstorm Warning | BOU | Douglas, Jefferson, Park | 34 min |
| Jul 30, 3:00 PM MDT | Flash Flood Warning | BOU | Arapahoe, Douglas | 3 hr |
| Jul 30, 4:22 PM MDT | Flash Flood Warning | BOU | Elbert, Lincoln | 2 hr |
| Jul 30, 4:24 PM MDT | Severe Thunderstorm Warning | BOU | Lincoln | 51 min |
| Jul 30, 5:14 PM MDT | Severe Thunderstorm Warning | BOU | Lincoln | 46 min |
| Jul 30, 5:25 PM MDT | Flash Flood Warning | BOU | Elbert, Lincoln | 2 hr |
Nearby
Flash Flood Warnings in Colorado, 1998Every flash flood warning in 1998
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.