Alert archive / Colorado / Severe Thunderstorm Warnings in 1997
Severe Thunderstorm Warning 19, NWS Denver/Boulder, CO
NWS Denver/Boulder, CO issued this severe thunderstorm warning at Jun 2, 1997, 5:18 PM MDT for Morgan County, Weld County, Colorado. It was in force for 42 min. 2 reports came from 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, with what was reported inside it.
The facts
- Issued
- Jun 2, 1997, 5:18 PM MDT (23:18 UTC)
- Expired
- Jun 2, 1997, 6:00 PM MDT
- In force
- 42 min
- Issued by
- NWS Denver/Boulder, CO
- Area
- Whole counties; the outline is the Mesonet’s reconstruction
Counties Morgan County, CO, Weld County, CO
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jun 2, 5:27 PM MDT | Thunderstorm Wind 56 | Cornish, CO | |
| Jun 2, 5:45 PM MDT | Thunderstorm Wind 52 | Briggsdale, CO |
NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in.
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 2, 2:00 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 105 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
- 99 J/kg
- Mixed-layer CIN
- -13 J/kg
- Mixed-layer LCL
- 562 m above ground
- 0-6 km bulk shear
- 36 kt
- 0-1 km storm-relative helicity
- -2 m²/s²
- 0-3 km storm-relative helicity
- 76 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.1
The text
As transmitted, in the capitals the NWS used until 2016.
000
TTAA00 KDEN 022322 RRA
SVRDEN
COC087-123-030000-
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE DENVER CO
518 PM MDT MON JUN 2 1997
THE NATIONAL WEATHER SERVICE IN DENVER HAS ISSUED A SEVERE
THUNDERSTORM WARNING EFFECTIVE UNTIL 600 PM MDT FOR PEOPLE IN THE
FOLLOWING COUNTIES...
IN NORTHEAST COLORADO
CENTRAL WELD AND NORTHWESTERN MORGAN
INCLUDING THE FOLLOWING LOCATIONS
BRIGGSDALE AND KEOTA
AT 513 PM MDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM 7 MILES SOUTHWEST OF BRIGGSDALE...OR ABOUT 19
MILES NORTHEAST OF GREELEY WHILE ANOTHER SEVERE THUNDERSTORM WAS
LOCATED 7 MILES EAST OF BRIGGSDALE.
THE STORMS WERE MOVING EAST SOUTHEAST AT 15 MILES PER HOUR.
THE TORNADO WARNING ISSUED FOR CENTRAL WELD COUNTY IS NO LONGER IN
EFFECT.
A TORNADO WATCH REMAINS IN EFFECT FOR NORTHEAST COLORADO UNTIL
8 PM MDT.
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 TORNADOES WITH LITTLE WARNING...LARGE
DAMAGING HAIL...DAMAGING WINDS OVER 60 MPH...DEADLY LIGHTNING...AND
VERY HEAVY RAIN.
REPORT SEVERE WEATHERp TO THE NEAREST LAW ENFORCEMENT AGENCY. THEY
WILL RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE FORECAST
OFFICE IN DENVER.
LAT...LON 4053 10384 4031 10424 4056 10459 4072 10404
KLEYLAWhat 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 2, 1:13 PM MDT, 4 hours 5 minutes before
COZ033-035-038-022000- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE DENVER CO 113 PM MDT MON JUN 2 1997 ...STRONG THUNDERSTORMS DEVELOPING OVER LARIMER COUNTY EARLY THIS AFTERNOON... AT 110 PM MDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A THUNDERSTORM NEAR VIRGINIA DALE OR ABOUT 25 MILES NORTHWEST OF FORT COLLINS. THIS STORM WILL PRODUCE VERY HEAVY RAIN...HAIL TO 1/2 INCH IN DIAMETER...STRONG GUSTY WINDS AND DANGEROUS LIGHTNING. THE STORM WAS MOVING EAST SOUTHEAST AT 20 MILES PER HOUR. PERSONS IN THE PATH OF THIS STORM SHOULD BE ON THE LOOKOUT FOR THREATENING WEATHER AND MOVE TO A PLACE OF SAFETY IF BAD WEATHER APPROACHES. KLEYLA
Special weather statement, Jun 2, 1:14 PM MDT, 4 hours 4 minutes before
COZ033-035-038-022000- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE DENVER CO 113 PM MDT MON JUN 2 1997 ...STRONG THUNDERSTORMS DEVELOPING OVER LARIMER COUNTY EARLY THIS AFTERNOON... AT 110 PM MDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A THUNDERSTORM NEAR VIRGINIA DALE OR ABOUT 25 MILES NORTHWEST OF FORT COLLINS. THIS STORM WILL PRODUCE VERY HEAVY RAIN...HAIL TO 1/2 INCH IN DIAMETER...STRONG GUSTY WINDS AND DANGEROUS LIGHTNING. THE STORM WAS MOVING EAST SOUTHEAST AT 20 MILES PER HOUR. PERSONS IN THE PATH OF THIS STORM SHOULD BE ON THE LOOKOUT FOR THREATENING WEATHER AND MOVE TO A PLACE OF SAFETY IF BAD WEATHER APPROACHES. KLEYLA
Special weather statement, Jun 2, 1:45 PM MDT, 3 hours 33 minutes before
COZ033-035-038-022015- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE DENVER CO 145 PM MDT MON JUN 2 1997 ...STRONG THUNDERSTORMS CONTINUE OVER EASTERN LARIMER COUNTY EARLY THIS AFTERNOON... AT 140 PM MDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A THUNDERSTORM 12 MILES NORTHWEST OF BUCKEYE...OR ABOUT 26 MILES NORTHWEST OF FORT COLLINS. THIS STORM CONTAINS VERY HEAVY RAIN...HAIL TO 1/2 INCH IN DIAMETER...GUSTY WINDS AND DANGEROUS LIGHTNING. THE STORM WAS MOVING EAST SOUTHEAST AT 15 MILES PER HOUR AND WILL BE PERSONS IN THE PATH OF THIS STORM SHOULD BE ON THE LOOKOUT FOR THREATENING WEATHER AND MOVE TO A PLACE OF SAFETY IF BAD WEATHER APPROACHES. KLEYLA
Special weather statement, Jun 2, 1:45 PM MDT, 3 hours 33 minutes before
COZ033-035-038-022015- SPECIAL WEATHER STATEMENT...CORRECTED 2ND PARAGRAPH NATIONAL WEATHER SERVICE DENVER CO 145 PM MDT MON JUN 2 1997 ...STRONG THUNDERSTORMS CONTINUE OVER EASTERN LARIMER COUNTY EARLY THIS AFTERNOON... AT 140 PM MDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A THUNDERSTORM 12 MILES NORTHWEST OF BUCKEYE...OR ABOUT 26 MILES NORTHWEST OF FORT COLLINS. THIS STORM CONTAINS VERY HEAVY RAIN...HAIL TO 1/2 INCH IN DIAMETER...GUSTY WINDS AND DANGEROUS LIGHTNING. THE STORM WAS MOVING EAST SOUTHEAST AT 15 MILES PER HOUR. PERSONS IN THE PATH OF THIS STORM SHOULD BE ON THE LOOKOUT FOR THREATENING WEATHER AND MOVE TO A PLACE OF SAFETY IF BAD WEATHER APPROACHES. KLEYLA
Special weather statement, Jun 2, 1:47 PM MDT, 3 hours 31 minutes before
COZ033-035-038-022015- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE DENVER CO 145 PM MDT MON JUN 2 1997 ...STRONG THUNDERSTORMS CONTINUE OVER EASTERN LARIMER COUNTY EARLY THIS AFTERNOON... AT 140 PM MDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A THUNDERSTORM 12 MILES NORTHWEST OF BUCKEYE...OR ABOUT 26 MILES NORTHWEST OF FORT COLLINS. THIS STORM CONTAINS VERY HEAVY RAIN...HAIL TO 1/2 INCH IN DIAMETER...GUSTY WINDS AND DANGEROUS LIGHTNING. THE STORM WAS MOVING EAST SOUTHEAST AT 15 MILES PER HOUR AND WILL BE PERSONS IN THE PATH OF THIS STORM SHOULD BE ON THE LOOKOUT FOR THREATENING WEATHER AND MOVE TO A PLACE OF SAFETY IF BAD WEATHER APPROACHES. KLEYLA
Special weather statement, Jun 2, 1:49 PM MDT, 3 hours 29 minutes before
COZ033-035-038-022015- SPECIAL WEATHER STATEMENT...CORRECTED 2ND PARAGRAPH NATIONAL WEATHER SERVICE DENVER CO 145 PM MDT MON JUN 2 1997 ...STRONG THUNDERSTORMS CONTINUE OVER EASTERN LARIMER COUNTY EARLY THIS AFTERNOON... AT 140 PM MDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A THUNDERSTORM 12 MILES NORTHWEST OF BUCKEYE...OR ABOUT 26 MILES NORTHWEST OF FORT COLLINS. THIS STORM CONTAINS VERY HEAVY RAIN...HAIL TO 1/2 INCH IN DIAMETER...GUSTY WINDS AND DANGEROUS LIGHTNING. THE STORM WAS MOVING EAST SOUTHEAST AT 15 MILES PER HOUR. PERSONS IN THE PATH OF THIS STORM SHOULD BE ON THE LOOKOUT FOR THREATENING WEATHER AND MOVE TO A PLACE OF SAFETY IF BAD WEATHER APPROACHES. KLEYLA
The office that day
Everything else NWS Denver/Boulder, CO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 2, 12:16 AM MDT | Severe Thunderstorm Warning | BOU | Logan, Washington | 44 min |
| Jun 2, 2:10 PM MDT | Severe Thunderstorm Warning | BOU | Larimer | 35 min |
| Jun 2, 3:30 PM MDT | Severe Thunderstorm Warning | BOU | Weld | 45 min |
| Jun 2, 3:56 PM MDT | Tornado Warning | BOU | Weld | 34 min |
| Jun 2, 4:35 PM MDT | Severe Thunderstorm Warning | BOU | Weld | 40 min |
| Jun 2, 4:55 PM MDT | Tornado Warning | BOU | Weld | 35 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.