Alert archive / Colorado / Severe Thunderstorm Warnings in 1997
Severe Thunderstorm Warning 58, NWS Denver/Boulder, CO
NWS Denver/Boulder, CO issued this severe thunderstorm warning at Jun 14, 1997, 8:52 PM MDT for Logan County, Phillips County, Sedgwick County, Colorado. It was in force for 38 min. 1 report came from inside the area while it was in force.
The area
The counties it named, with what was reported inside it.
The facts
- Issued
- Jun 14, 1997, 8:52 PM MDT (02:52 UTC)
- Expired
- Jun 14, 1997, 9:30 PM MDT
- In force
- 38 min
- Issued by
- NWS Denver/Boulder, CO
- Area
- Whole counties; the outline is the Mesonet’s reconstruction
Counties Logan County, CO, Phillips County, CO, Sedgwick County, CO
The radar
The Goodland radar (KGLD), 170 km from the middle of the area, began a volume at 02:54 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jun 14, 9:28 PM MDT | Hail 1.5 | Haxtun, 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 14, 3:15 PM MDT | Tornado Watch | SPC | 6 hr |
The nearest sounding before it
Denver, CO (KDNR), launched 00:00Z, 2.9 hours before the alert went out and 109 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
- 70 J/kg
- Mixed-layer CIN
- -106 J/kg
- Mixed-layer LCL
- 2413 m above ground
- 0-6 km bulk shear
- 3 kt
- 0-1 km storm-relative helicity
- -71 m²/s²
- 0-3 km storm-relative helicity
- -39 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.
What 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 14, 3:45 PM MDT, 5 hours 7 minutes before
COZ035-038-039-142220- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE DENVER CO 345 PM MDT SAT JUN 14 1997 ...STRONG THUNDERSTORMS IN SOUTHEASTERN LARIMER AND CENTRAL BOULDER COUNTIES... AT 345 PM MDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED STRONG THUNDERSTORMS DEVELOPING OVER RIVERSIDE...OR ABOUT 33 MILES SOUTHWEST OF FORT COLLINS. THE STORMS WERE MOVING NORTHEAST AT 15 MPH. PERSONS IN OR NEAR SOUTHERN FORT COLLINS...NORTHWESTERN LONGMONT... BERTHOUD...DRAKE...GOLD HILL...HARMONY...JAMESTOWN...LOVELAND... LYONS...MASONVILLE...NEDERLAND...PEACEFUL VALLEY...RAYMOND...TIMNATH AND WARD SHOULD BE ON THE LOOKOUT FOR LARGE HAIL...STRONG WINDS...AND POSSIBLE TORNADOES WITH THESE STORMS AND MOVE TO A PLACE OF SAFETY IF BAD WEATHER APPROACHES. 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. A TORNADO WATCH REMAINS IN EFFECT FOR ALL OF NORTHEAST COLORADO UNTIL 900 PM THIS EVENING. RJK
Special weather statement, Jun 14, 5:34 PM MDT, 3 hours 18 minutes before
COZ040-140010- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE DENVER CO 535 PM MDT SAT JUN 14 1997 ...STRONG THUNDERSTORMS MOVING EASTWARD THROUGH DOUGLAS COUNTY... AT 530 PM MDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A LINE OF STRONG THUNDERSTORMS MOVING EAST THROUGH DOUGLAS COUNTY. THE STRONGEST STORM WAS LOCATED 7 MILES NORTHEAST OF CASTLE ROCK...OR 34 MILES SOUTH OF DENVER. THIS LINE OF STORMS WAS MOVING EAST-NORTHEAST AT 25 MPH. PERSONS IN OR NEAR CASTLE ROCK...FRANTOWN...LARKSPUR...BEVERLY HILLS...PARKER...GREENLAND AND SILVER HEIGHTS SHOULD BE ON THE LOOKOUT FOR LARGE HAIL...VERY STRONG WIND GUSTS...FUNNEL CLOUDS AND POSSIBLE TORNADOES WITH THESE STORMS AND MOVE TO A PLACE OF SAFETY IF BAD WEATHER APPROACHES. 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. A TORNADO WATCH REMAINS IN EFFECT FOR ALL OF NORTHEAST COLORADO UNTIL 900 PM THIS EVENING. BAKER
Special weather statement, Jun 14, 5:35 PM MDT, 3 hours 17 minutes before
COZ040-140010- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE DENVER CO 535 PM MDT SAT JUN 14 1997 ...STRONG THUNDERSTORMS MOVING EASTWARD THROUGH DOUGLAS COUNTY... AT 530 PM MDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A LINE OF STRONG THUNDERSTORMS MOVING EAST THROUGH DOUGLAS COUNTY. THE STRONGEST STORM WAS LOCATED 7 MILES NORTHEAST OF CASTLE ROCK...OR 34 MILES SOUTH OF DENVER. THIS LINE OF STORMS WAS MOVING EAST-NORTHEAST AT 25 MPH. PERSONS IN OR NEAR CASTLE ROCK...FRANTOWN...LARKSPUR...BEVERLY HILLS...PARKER...GREENLAND AND SILVER HEIGHTS SHOULD BE ON THE LOOKOUT FOR LARGE HAIL...VERY STRONG WIND GUSTS...FUNNEL CLOUDS AND POSSIBLE TORNADOES WITH THESE STORMS AND MOVE TO A PLACE OF SAFETY IF BAD WEATHER APPROACHES. 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. A TORNADO WATCH REMAINS IN EFFECT FOR ALL OF NORTHEAST COLORADO UNTIL 900 PM THIS EVENING. BAKER
Special weather statement, Jun 14, 7:26 PM MDT, 1 hour 26 minutes before
COZ045-150200- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE DENVER CO 726 PM MDT SAT JUN 14 1997 ...STRONG THUNDERSTORM IN EASTERN ADAMS COUNTY... AT 725 PM MDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A THUNDERSTORM 7 MILES SOUTHWEST OF SHAMROCK...OR ABOUT 31 MILES SOUTH OF FORT MORGAN. THE STORM WAS MOVING EAST AT 15 MILES PER HOUR. PERSONS IN OR NEAR LEADER AND SHAMROCK SHOULD BE ON THE LOOKOUT FOR THREATENING WEATHER AND MOVE TO A PLACE OF SAFETY IF BAD WEATHER APPROACHES. THIS AFTERNOONS THUNDERSTORMS ACROSS THE AREA HAVE HAD A HISTORY OF PRODUCING HAIL UP TO 1 1/2 INCHES IN DIAMETER AND RAINFALL AMOUNTS OF AROUND 1 INCH. A TORNADO WATCH REMAINS IN EFFECT FOR NORTHEASTERN COLORADO UNTIL 900 PM. RJK
Special weather statement, Jun 14, 7:28 PM MDT, 1 hour 24 minutes before
COZ045-150200- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE DENVER CO 726 PM MDT SAT JUN 14 1997 ...STRONG THUNDERSTORM IN EASTERN ADAMS COUNTY... AT 725 PM MDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A THUNDERSTORM 7 MILES SOUTHWEST OF SHAMROCK...OR ABOUT 31 MILES SOUTH OF FORT MORGAN. THE STORM WAS MOVING EAST AT 15 MILES PER HOUR. PERSONS IN OR NEAR LEADER AND SHAMROCK SHOULD BE ON THE LOOKOUT FOR THREATENING WEATHER AND MOVE TO A PLACE OF SAFETY IF BAD WEATHER APPROACHES. THIS AFTERNOON'S THUNDERSTORMS ACROSS THE AREA HAVE HAD A HISTORY OF PRODUCING HAIL UP TO 1 1/2 INCHES IN DIAMETER AND RAINFALL AMOUNTS OF AROUND 1 INCH. A TORNADO WATCH REMAINS IN EFFECT FOR NORTHEASTERN COLORADO UNTIL 900 PM. RJK
Special weather statement, Jun 14, 8:51 PM MDT, 1 minute before
COZ038>050-150330- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE DENVER CO 851 PM MDT SAT JUN 14 1997 ...TORNADO WATCH WILL EXPIRE AT 900 PM MDT FOR EASTERN COLORADO... THE TORNADO WATCH ISSUED EARLIER FOR PORTIONS OF EASTERN COLORADO WILL EXPIRE AT 900 PM MDT. AT 848 PM MDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED SCATTERED SHOWERS AND THUNDERSTORMS OVER EXTREME NORTHEAST COLORADO. IN ADDITION AN ISOLATED THUNDERSTORM WAS LOCATED OVER SOUTHEASTERN WELD COUNTY EAST OF KEENESBURG. THE SHOWERS AND THUNDERSTORMS WERE MOVING EAST AT 25 MPH AND WILL PRODUCE HEAVY RAIN...HAIL...GUSTY WINDS AND DANGEROUS LIGHTNING. KLEYLA
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, 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 |
| Jun 15, 3:53 PM MDT | Severe Thunderstorm Warning | BOU | Adams, Weld | 32 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; radar from the NEXRAD Level II archive.