Alert archive / Colorado / Severe Thunderstorm Warnings in 1997
Severe Thunderstorm Warning 89, NWS Denver/Boulder, CO
NWS Denver/Boulder, CO issued this severe thunderstorm warning at Jun 24, 1997, 7:01 PM MDT for Adams County, Morgan County, Washington County, Colorado. It was in force for 29 min. 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
- Jun 24, 1997, 7:01 PM MDT (01:01 UTC)
- Expired
- Jun 24, 1997, 7:30 PM MDT
- In force
- 29 min
- Issued by
- NWS Denver/Boulder, CO
- Area
- Whole counties; the outline is the Mesonet’s reconstruction
Counties Adams County, CO, Morgan County, CO, Washington County, CO
The radar
The Denver radar (KFTG), 79 km from the middle of the area, began a volume at 01:02 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 watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Jun 24, 4:15 PM MDT | Severe Thunderstorm Watch | SPC | 6 hr |
The nearest sounding before it
Denver, CO (KDNR), launched 00:00Z, 1.0 hours before the alert went out and 41 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
- 210 J/kg
- Mixed-layer CIN
- -3 J/kg
- Mixed-layer LCL
- 2434 m above ground
- 0-6 km bulk shear
- 32 kt
- 0-1 km storm-relative helicity
- 19 m²/s²
- 0-3 km storm-relative helicity
- 108 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.3
The text
As transmitted, in the capitals the NWS used until 2016.
026
WUUS1 KDEN 250103 RRA
SVRDEN
COC001-087-121-250130-
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE DENVER CO
701 PM MDT TUE JUN 24 1997
THE NATIONAL WEATHER SERVICE IN DENVER HAS ISSUED A SEVERE
THUNDERSTORM WARNING EFFECTIVE UNTIL 730 PM MDT FOR PEOPLE IN THE
FOLLOWING COUNTIES...
IN NORTHEAST COLORADO
NORTHEASTERN ADAMS...SOUTHEASTERN MORGAN AND WEST CENTRAL
WASHINGTON
INCLUDING THE FOLLOWING LOCATIONS
ADENA SCHOOL...ADENA...GARY...TWELVE-MILE CORNER AND WOODROW
AT 656 PM MDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM 2 MILES SOUTH OF TWELVE-MILE CORNER...OR ABOUT 15
MILES SOUTH OF FORT MORGAN.
THE STORM WAS MOVING EAST AT 25 MILES PER HOUR.
HAIL...INTENSE RAIN AND STRONG DAMAGING WINDS ARE LIKELY WITH THIS
STORM. TAKE COVER IN A SUBSTANTIAL SHELTER UNTIL THE STORM PASSES.
THIS WARNING REPLACES THE EARLIER WARNING FOR SOUTHWEST MORGAN
COUNTY THAT EXPIRED AT 7 PM MDT.
REPORT SEVERE WEATHER TO THE NEAREST LAW ENFORCEMENT AGENCY. THEY
WILL RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE FORECAST
OFFICE IN DENVER.
LAT...LON 4004 10347 3988 10354 3991 10383 4006 10395
4015 10377
ETThe office that day
Everything else NWS Denver/Boulder, CO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 24, 6:29 PM MDT | Severe Thunderstorm Warning | BOU | Morgan | 31 min |
| Jun 25, 3:10 PM MDT | Tornado Warning | BOU | Logan, Weld | 35 min |
| Jun 25, 3:33 PM MDT | Tornado Warning | BOU | Logan | 27 min |
| Jun 25, 3:45 PM MDT | Tornado Warning | BOU | Logan, Weld | 30 min |
| Jun 25, 4:04 PM MDT | Tornado Warning | BOU | Logan | 26 min |
| Jun 25, 4:15 PM MDT | Severe Thunderstorm Warning | BOU | Sedgwick | 45 min |
| Jun 25, 4:53 PM MDT | Flash Flood Warning | BOU | Logan | 2 hr |
Nearby
Severe Thunderstorm Warnings in Colorado, 1997Every severe thunderstorm warning in 1997
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.