Alert archive / Colorado / Severe Thunderstorm Warnings in 1997
Severe Thunderstorm Warning 14, NWS Denver/Boulder, CO
NWS Denver/Boulder, CO issued this severe thunderstorm warning at Jun 1, 1997, 5:17 PM MDT for Morgan County, Washington County, Colorado. It was in force for 33 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 1, 1997, 5:17 PM MDT (23:17 UTC)
- Expired
- Jun 1, 1997, 5:50 PM MDT
- In force
- 33 min
- Issued by
- NWS Denver/Boulder, CO
- Area
- Whole counties; the outline is the Mesonet’s reconstruction
Counties Morgan County, CO, Washington County, CO
The radar
The Denver radar (KFTG), 118 km from the middle of the area, began a volume at 23:16 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 1, 4:45 PM MDT | Tornado Watch | SPC | 6 hr |
The nearest sounding before it
Denver, CO (KDNR), launched 12:00Z, 11.3 hours before the alert went out and 47 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
- 38 J/kg
- Mixed-layer CIN
- -458 J/kg
- Mixed-layer LCL
- 1704 m above ground
- 0-6 km bulk shear
- 38 kt
- 0-1 km storm-relative helicity
- -68 m²/s²
- 0-3 km storm-relative helicity
- -16 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
581
WUUS1 KDEN 012327
SVRDEN
COC087-121-012345-
BULLETIN - IMMEDIATE BROADCAST REQUESTED ...CORRECTION...
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE DENVER CO
517 PM MDT SUN JUN 1 1997
THE NATIONAL WEATHER SERVICE IN DENVER HAS ISSUED A SEVERE
THUNDERSTORM WARNING EFFECTIVE UNTIL 550 PM MDT FOR PEOPLE IN THE
FOLLOWING COUNTIES...
IN NORTHEAST COLORADO
EAST CENTRAL MORGAN AND NORTH CENTRAL WASHINGTON
INCLUDING THE FOLLOWING LOCATIONS
HILLROSE...MIDWAY AND SNYDER
AT 515 PM MDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM 5 MILES NORTHWEST OF MIDWAY...OR ABOUT 15 MILES
NORTHWEST OF AKRON.
THE STORM WAS MOVING NORTHEAST AT 30 MILES PER HOUR.
VERY LARGE HAIL IS POSSIBLE WITH THIS SEVERE THUNDERSTORM. IF YOU ARE
IN THE PATH OF THE STORM...PUT YOUR CAR IN A GARAGE AND MOVE TO A
SUBSTANTIAL SHELTER.
REPORT SEVERE WEATHER TO THE NEAREST LAW ENFORCEMENT AGENCY. THEY
WILL RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE FORECAST
OFFICE IN DENVER.
A TORNADO WATCH IS IN EFFECT FOR MOST OF NORTHEAST COLORADO UNTIL
11 PM MDT. TORNADOES ARE POSSIBLE...ALONG WITH LARGE HAIL AND
DAMAGING THUNDERSTORM WINDS. CONTINUE TO MONITOR NOAA WEATHER
RADIO...LOCAL NEWS OUTLETS AND THE WEATHER CHANNEL FOR THE LATEST ON
SEVERE WEATER WATCHES AND WARNINGS.
BAKER
LAT...LON 4024 10311 4014 10353 4041 10364 4041 10323What forecasters said that day
The local office's own words before this severe thunderstorm 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, Jun 1, 11:30 AM MDT, 5 hours 47 minutes before
COZ030-032>050-020600- SIGNIFICANT WEATHER OUTLOOK FOR NORTHEAST AND NORTH CENTRAL COLORADO NATIONAL WEATHER SERVICE DENVER CO 1130 AM MDT SUN JUN 1 1997 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: WARM AIR ALOFT WILL SUPPRESS THUNDERSTORM ACTIVITY EAST OF THE MOUNTAINS THIS AFTERNOON. AN UPPER AIR DISTURBANCE AND A COLD FRONT WILL PROVIDE LIFT FOR STRONG THUNDERSTORMS TONIGHT. THERE IS SUBSTANTIAL MOISTURE ON THE PLAINS...AND INCREASING SOUTH TO SOUTHEAST WINDS WILL PROVIDE A FAVORABLE WIND PROFILE FOR SEVERE THUNDERSTORMS THIS EVENING. THUNDERSTORMS WILL LIKELY DEVELOP OVER LARIMER AND JACKSON COUNTIES AND SOUTHEAST WYOMING BY 6 PM AND SPREAD SOUTHEAST ACROSS THE NORTHEAST PLAINS DURING THE EVENING. LARGE HAIL WILL BE THE MAIN THREAT WITH THESE STORMS...BUT DAMAGING WINDS AND ISOLATED TORNADOES WILL ALSO BE POSSIBLE. THE STORMS WILL LIKELY CONTINUE THROUGH MUCH OF THE NIGHT EAST OF FORT MORGAN...SO FLOODING OF SMALL CREEKBEDS IS POSSIBLE OVERNIGHT. THE DENVER AREA WILL BE ON THE WEST EDGE OF THE SEVERE WEATHER THREAT. SPOTTER ACTIVATION IS LIKELY AFTER 5 PM. GIMMESTAD
Special weather statement, Jun 1, 11:32 AM MDT, 5 hours 45 minutes before
COZ030-032>050-020600- SIGNIFICANT WEATHER OUTLOOK FOR NORTHEAST AND NORTH CENTRAL COLORADO NATIONAL WEATHER SERVICE DENVER CO 1130 AM MDT SUN JUN 1 1997 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: WARM AIR ALOFT WILL SUPPRESS THUNDERSTORM ACTIVITY EAST OF THE MOUNTAINS THIS AFTERNOON. AN UPPER AIR DISTURBANCE AND A COLD FRONT WILL PROVIDE LIFT FOR STRONG THUNDERSTORMS TONIGHT. THERE IS SUBSTANTIAL MOISTURE ON THE PLAINS...AND INCREASING SOUTH TO SOUTHEAST WINDS WILL PROVIDE A FAVORABLE WIND PROFILE FOR SEVERE THUNDERSTORMS THIS EVENING. THUNDERSTORMS WILL LIKELY DEVELOP OVER LARIMER AND JACKSON COUNTIES AND SOUTHEAST WYOMING BY 6 PM AND SPREAD SOUTHEAST ACROSS THE NORTHEAST PLAINS DURING THE EVENING. LARGE HAIL WILL BE THE MAIN THREAT WITH THESE STORMS...BUT DAMAGING WINDS AND ISOLATED TORNADOES WILL ALSO BE POSSIBLE. THE STORMS WILL LIKELY CONTINUE THROUGH MUCH OF THE NIGHT EAST OF FORT MORGAN...SO FLOODING OF SMALL CREEKBEDS IS POSSIBLE OVERNIGHT. THE DENVER AREA WILL BE ON THE WEST EDGE OF THE SEVERE WEATHER THREAT. SPOTTER ACTIVATION IS LIKELY AFTER 5 PM. GIMMESTAD
Special weather statement, Jun 1, 4:50 PM MDT, 27 minutes before
COZ039-040-043-012315- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE DENVER CO 450 PM MDT SUN JUN 1 1997 ...A WEAK TORNADO POSSIBLE... AT 447 PM MDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A THUNDERSTORM 4 MILES SOUTHWEST OF BROOMFIELD...OR ABOUT 13 MILES NORTHWEST OF DENVER. TO THE EAST OF THIS STORM THERE WERE SEVERAL BOUNDARIES CONVERGING. THIS TYPE OF SITUATION IS FAVORABLE FOR THE FORMATION OF WEAK SHORT LIVED TORNADOES. THE STORM WAS MOVING NORTHEAST AT 25 MILES PER HOUR. PERSONS FROM NORTHERN JEFFERSON COUNTY TO SOUTHERN WELD COUNTY AND NORTHWEST ADAMS COUNTY SHOULD BE PREPARED TO TAKE COVER IF SEVERE WEATHER APPROACHES. REPORT ANY SEVERE WEATHER TO YOUR COUNTY SHERIFF. RTG
Special weather statement, Jun 1, 4:55 PM MDT, 22 minutes before
COZ039-040-043-012315- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE DENVER CO 450 PM MDT SUN JUN 1 1997 ...A WEAK TORNADO POSSIBLE... AT 447 PM MDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A THUNDERSTORM 4 MILES SOUTHWEST OF BROOMFIELD...OR ABOUT 13 MILES NORTHWEST OF DENVER. TO THE EAST OF THIS STORM THERE WERE SEVERAL BOUNDARIES CONVERGING. THIS TYPE OF SITUATION IS FAVORABLE FOR THE FORMATION OF WEAK SHORT LIVED TORNADOES. THE STORM WAS MOVING NORTHEAST AT 25 MILES PER HOUR. PERSONS FROM NORTHERN JEFFERSON COUNTY TO SOUTHERN WELD COUNTY AND NORTHWEST ADAMS COUNTY SHOULD BE PREPARED TO TAKE COVER IF SEVERE WEATHER APPROACHES. REPORT ANY SEVERE WEATHER TO YOUR COUNTY SHERIFF. RTG
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.