Alert archive / Colorado / Severe Thunderstorm Warnings in 1997
Severe Thunderstorm Warning 88, NWS Denver/Boulder, CO
NWS Denver/Boulder, CO issued this severe thunderstorm warning at Jun 24, 1997, 6:29 PM MDT for Morgan County, Colorado. It was in force for 31 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, 6:29 PM MDT (00:29 UTC)
- Expired
- Jun 24, 1997, 7:00 PM MDT
- In force
- 31 min
- Issued by
- NWS Denver/Boulder, CO
- Area
- Whole counties; the outline is the Mesonet’s reconstruction
County Morgan County, CO
The radar
The Denver radar (KFTG), 62 km from the middle of the area, began a volume at 00:33 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, 0.5 hours before the alert went out and 64 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.
862
WUUS1 KDEN 250031 RRA
SVRDEN
COC087-250100-
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE DENVER CO
629 PM MDT TUE JUN 24 1997
THE NATIONAL WEATHER SERVICE IN DENVER HAS ISSUED A SEVERE
THUNDERSTORM WARNING EFFECTIVE UNTIL 700 PM MDT FOR PEOPLE IN THE
FOLLOWING COUNTIES...
IN NORTHEAST COLORADO
SOUTHWESTERN MORGAN
INCLUDING THE FOLLOWING LOCATIONS
ADENA...HOYT AND TWELVE-MILE CORNER
AT 627 PM MDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM 8 MILES NORTH OF HOYT...OR ABOUT 15 MILES
SOUTHWEST OF FORT MORGAN.
THE STORM WAS MOVING SOUTHEAST AT 25 MILES PER HOUR.
HAIL UP TO 1 INCH IN DIAMETER HAS BEEN REPORTED WITH THIS STORM.
IF YOU ARE IN THE PATH OF THE STORM...PUT YOUR CAR IN A GARAGE AND
MOVE TO A SUBSTANTIAL SHELTER.
THIS WARNING REPLACES THE PREVIOUS WARNING THAT COVERED SOUTHWEST
MORGAN AND SOUTH CENTRAL WELD COUNTY THAT EXPIRED AT 630 PM.
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 4001 10370 4000 10413 4016 10417 4022 10397
ETThe office that day
Everything else NWS Denver/Boulder, CO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 24, 7:01 PM MDT | Severe Thunderstorm Warning | BOU | Adams, Morgan, Washington | 29 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.