Alert archive / Colorado / Severe Thunderstorm Warnings in 1997
Severe Thunderstorm Warning 62, NWS Denver/Boulder, CO
NWS Denver/Boulder, CO issued this severe thunderstorm warning at Jun 15, 1997, 3:53 PM MDT for Adams County, Weld County, Colorado. It was in force for 32 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 15, 1997, 3:53 PM MDT (21:53 UTC)
- Expired
- Jun 15, 1997, 4:25 PM MDT
- In force
- 32 min
- Issued by
- NWS Denver/Boulder, CO
- Area
- Whole counties; the outline is the Mesonet’s reconstruction
Counties Adams County, CO, Weld County, CO
The radar
The Denver radar (KFTG), 32 km from the middle of the area, began a volume at 21:52 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 12:00Z, 9.9 hours before the alert went out and 128 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
- 62 J/kg
- Mixed-layer CIN
- -239 J/kg
- Mixed-layer LCL
- 1525 m above ground
- 0-6 km bulk shear
- 18 kt
- 0-1 km storm-relative helicity
- -73 m²/s²
- 0-3 km storm-relative helicity
- -77 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 152154 RRA
SVRDEN
COC001-123-152225-
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE DENVER CO
353 PM MDT SUN JUN 15 1997
THE NATIONAL WEATHER SERVICE IN DENVER HAS ISSUED A SEVERE
THUNDERSTORM WARNING EFFECTIVE UNTIL 425 PM MDT FOR PEOPLE IN THE
FOLLOWING COUNTIES...
IN NORTHEAST COLORADO
NORTHWESTERN ADAMS AND SOUTHWESTERN WELD
INCLUDING THE FOLLOWING LOCATIONS
BARR LAKE...BRIGHTON...DACONO...FIRESTONE...FORT LUPTON...
FREDERICK...HUDSON...KEENESBURG AND LOCHBUIE
THIS WARNING REPLACES THE TORNADO WARNING WHICH WAS IN EFFECT UNTIL
345 PM.
AT 346 PM MDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM 4 MILES SOUTHEAST OF DACONO...OR ABOUT 20 MILES
NORTH OF DENVER.
THE STORM WAS MOVING EAST AT 5 MILES PER HOUR.
THIS STORM PRODUCED A WEAK TORNADO AT 322 PM AND A FEW MORE FUNNEL
CLOUDS AT ABOUT 335 PM. ADDITIONAL FUNNEL CLOUDS OR
WEAK...SHORT-LIVED TORNADOES ARE STILL POSSIBLE. HAIL UP TO I 1
INCH IN DIAMETER AND HEAVY RAINS UP TO AN INCH IN 30 MINUTES ARE
MOST LIKELY WITH THESE THUNDERSTORMS.
IF SEVERE WEATHER APPROACHES YOUR AREA...GO INSIDE A STURDY SHELTER
AWAY FROM CREEK BEDS AND OTHER FLOOD-PRONE AREAS. REMEMBER...A SEVERE
THUNDERSTORM CAN PRODUCE LARGE DAMAGING HAIL...DAMAGING WINDS OVER 60
MPH...DEADLY LIGHTNING...AND VERY HEAVY RAIN.
HEAVY RAINS MAY FLOOD LOW LYING AREAS SUCH AS DITCHES AND
UNDERPASSES. AVOID THESE AREAS AND DO NOT CROSS FLOODED ROADS AS THEY
MAY BE WASHED OUT. WATER LEVELS OF SMALL STREAMS AND RIVERS MAY ALSO
RISE...THEREFORE SEEK HIGHER GROUND IF THREATENED BY FLOOD WATERS.
REPORT SEVERE WEATHER TO THE NEAREST LAW ENFORCEMENT AGENCY. THEY
WILL RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE FORECAST
OFFICE IN DENVER.
DANKERS
LAT...LON 3995 10448 3995 10504 4017 10504 4019 10451What 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 15, 11:25 AM MDT, 4 hours 28 minutes before
COZ030-032>050-160600- SIGNIFICANT WEATHER OUTLOOK FOR NORTHEAST AND NORTH CENTRAL COLORADO NATIONAL WEATHER SERVICE DENVER CO 1125 AM MDT SUN JUN 15 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: THE AIRMASS OVER NORTHEAST COLORADO HAS MODIFIED THIS MORNING IN THE WAKE OF A WEATHER DISTURBANCE WHICH PASSED SOUTH OF THE AREA OVERNIGHT. AS A RESULT...THE CURRENT WIND PROFILE DOES NOT FAVOR THE DEVELOPMENT OF STRONG OR EVEN SEVERE THUNDERSTORMS TODAY. THUNDERSTORMS WILL CONTINUE TO DEVELOP ALONG THE FOOTHILLS...MOVING ONTO THE PLAINS DURING THE AFTERNOON AND EVENING. A WEAK COLD FRONT AN AND UPPER LEVEL DISTURBANCE WILL MOVE ACROSS NORTHEAST COLORADO THIS AFTERNOON...BRINGING AN INCREASE IN LOW LEVEL MOISTURE ACROSS NORTHEAST COLORADO. AS A RESULT...SOME OF THE STORMS COULD PRODUCE BRIEF HEAVY RAINS AS WELL AS SMALL HAIL...MAINLY EAST OF A LIMON TO AKRON LINE AND OVER THE MOUNTAINS AND HIGHER FOOTHILLS. SPOTTER ACTIVATION IS NOT ANTICIPATED TODAY. LESZCYNSKI
Special weather statement, Jun 15, 11:26 AM MDT, 4 hours 27 minutes before
COZ030-032>050-160600- SIGNIFICANT WEATHER OUTLOOK FOR NORTHEAST AND NORTH CENTRAL COLORADO NATIONAL WEATHER SERVICE DENVER CO 1125 AM MDT SUN JUN 15 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: THE AIRMASS OVER NORTHEAST COLORADO HAS MODIFIED THIS MORNING IN THE WAKE OF A WEATHER DISTURBANCE WHICH PASSED SOUTH OF THE AREA OVERNIGHT. AS A RESULT...THE CURRENT WIND PROFILE DOES NOT FAVOR THE DEVELOPMENT OF STRONG OR EVEN SEVERE THUNDERSTORMS TODAY. THUNDERSTORMS WILL CONTINUE TO DEVELOP ALONG THE FOOTHILLS...MOVING ONTO THE PLAINS DURING THE AFTERNOON AND EVENING. A WEAK COLD FRONT AN AND UPPER LEVEL DISTURBANCE WILL MOVE ACROSS NORTHEAST COLORADO THIS AFTERNOON...BRINGING AN INCREASE IN LOW LEVEL MOISTURE ACROSS NORTHEAST COLORADO. AS A RESULT...SOME OF THE STORMS COULD PRODUCE BRIEF HEAVY RAINS AS WELL AS SMALL HAIL...MAINLY EAST OF A LIMON TO AKRON LINE AND OVER THE MOUNTAINS AND HIGHER FOOTHILLS. SPOTTER ACTIVATION IS NOT ANTICIPATED TODAY. LESZCYNSKI
Special weather statement, Jun 15, 2:25 PM MDT, 1 hour 28 minutes before
COZ041-046-047-152100- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE DENVER CO 225 PM MDT SUN JUN 15 1997 ...STRONG THUNDERSTORM WINDS AND HAIL POSSIBLE IN ELBERT COUNTY... AT 220 PM MDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A LINE OF THUNDERSTORMS OVER CENTRAL AND SOUTHEAST ELBERT COUNTY. THE STRONGEST STORM WAS LOCATED 3 MILES NORTHWEST OF KUTCH...OR ABOUT 27 MILES SOUTHWEST OF LIMON. THESE STORMS WERE MOVING SLOWLY TO THE SOUTHEAST AT 5 MILES PER HOUR. PERSONS IN OR NEAR ELIZABETH...KIOWA...KUTCH...MATHESON AND SIMLA SHOULD BE ON THE LOOKOUT FOR THREATENING WEATHER..SUCH AS WIND GUSTS TO 50 MPH...HAIL AND DANGEROUS LIGHTNING. IF SEVERE WEATHER SHOULD DEVELOP...MOVE QUICKLY TO A PLACE OF SAFETY. BAKER...WSFO DENVER
Special weather statement, Jun 15, 2:26 PM MDT, 1 hour 27 minutes before
COZ041-046-047-152100- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE DENVER CO 225 PM MDT SUN JUN 15 1997 ...STRONG THUNDERSTORM WINDS AND HAIL POSSIBLE IN ELBERT COUNTY... AT 220 PM MDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A LINE OF THUNDERSTORMS OVER CENTRAL AND SOUTHEAST ELBERT COUNTY. THE STRONGEST STORM WAS LOCATED 3 MILES NORTHWEST OF KUTCH...OR ABOUT 27 MILES SOUTHWEST OF LIMON. THESE STORMS WERE MOVING SLOWLY TO THE SOUTHEAST AT 5 MILES PER HOUR. PERSONS IN OR NEAR ELIZABETH...KIOWA...KUTCH...MATHESON AND SIMLA SHOULD BE ON THE LOOKOUT FOR THREATENING WEATHER..SUCH AS WIND GUSTS TO 50 MPH...HAIL AND DANGEROUS LIGHTNING. IF SEVERE WEATHER SHOULD DEVELO6P...MOVE QUICKLY TO A PLACE OF SAFETY. BAKER...WSFO DENVER
Special weather statement, Jun 15, 2:30 PM MDT, 1 hour 23 minutes before
COZ030-032>050-160600- SIGNIFICANT WEATHER OUTLOOK FOR NORTHEAST AND NORTH CENTRAL COLORADO NATIONAL WEATHER SERVICE DENVER CO 230 PM MDT SUN JUN 15 1997 THIS UPDATED 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: A WEAK COLD FRONT IS PUSHING INTO NORTHERN COLORADO THIS AFTERNOON AND IS BECOMING THE FOCUS FOR THE DEVELOPMENT OF STRONG STORMS. OTHER STRONG STORMS ARE DEVELOPING ALONG THE PALMER DIVIDE. IN ADDITION...THUNDERSTORMS CONTINUE TO DEVELOP OVER THE MOUNTAINS AND ALONG THE FOOTHILLS. WINDS IN THE UPPER ATMOSPHERE WHICH WILL STEER THESE STORMS ARE LIGHT. AS A RESULT...ALL THE STORMS WILL BE SLOW MOVING...AND COULD DUMP HEAVY RAIN IN ANY GIVEN PLACE IN A VERY SHORT TIME. AGAIN...THE MAIN THREAT FROM THE STORMS WILL BE HEAVY RAIN...WHICH COULD PRODUCE LOCAL FLOODING...AND SMALL HAIL. BUT A FEW OF THE STRONGER STORMS COULD PRODUCE HAIL UP TO ONE INCH. A FORMAL SPOTTER NETWORK IS NOT ANTICIPATED...BUT RAIN >AND HAIL REPORTS TO THE NATIONAL WEATHER SERVICE WILL BE APPRECIATED. LESZCYNSKI
The office that day
Everything else NWS Denver/Boulder, CO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 14, 6:05 PM MDT | Severe Thunderstorm Warning | BOU | Morgan, Weld | 35 min |
| Jun 14, 7:35 PM MDT | Severe Thunderstorm Warning | BOU | Adams, Washington | 25 min |
| Jun 14, 7:55 PM MDT | Severe Thunderstorm Warning | BOU | Logan, Phillips, Sedgwick | 45 min |
| Jun 14, 8:52 PM MDT | Severe Thunderstorm Warning | BOU | Logan, Phillips, Sedgwick | 38 min |
| Jun 14, 9:38 PM MDT | Severe Thunderstorm Warning | BOU | Phillips | 27 min |
| Jun 15, 12:33 AM MDT | Flash Flood Warning | BOU | Phillips | 3 hr |
| Jun 15, 3:25 AM MDT | Flash Flood Warning | BOU | Phillips | 2 hr |
| Jun 15, 5:23 AM MDT | Flash Flood Warning | BOU | Phillips | 3 hr |
| Jun 15, 1:41 PM MDT | Severe Thunderstorm Warning | BOU | Larimer, Weld | 34 min |
| Jun 15, 3:11 PM MDT | Severe Thunderstorm Warning | BOU | Adams, Boulder, Weld | 34 min |
| Jun 15, 3:20 PM MDT | Tornado Warning | BOU | Adams, Weld | 25 min |
| Jun 15, 3:20 PM MDT | Tornado Warning | BOU | Boulder | 25 min |
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.