Alert archive / Colorado / Severe Thunderstorm Warnings in 1997
Severe Thunderstorm Warning 1, NWS Denver/Boulder, CO
NWS Denver/Boulder, CO issued this severe thunderstorm warning at May 15, 1997, 5:02 PM MDT for Adams County, Arapahoe County, Denver County, Colorado. It was in force for 28 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
- May 15, 1997, 5:02 PM MDT (23:02 UTC)
- Expired
- May 15, 1997, 5:30 PM MDT
- In force
- 28 min
- Issued by
- NWS Denver/Boulder, CO
- Area
- Whole counties; the outline is the Mesonet’s reconstruction
Counties Adams County, CO, Arapahoe County, CO, Denver County, CO
The radar
The Denver radar (KFTG), 20 km from the middle of the area, began a volume at 23:02 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
Fort Carson/Butt, CO (KFCS), launched 12:00Z, 11.0 hours before the alert went out and 119 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
- 2 J/kg
- Mixed-layer CIN
- -109 J/kg
- Mixed-layer LCL
- 909 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
- 67 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
183
WUUS1 KDEN 152304 RRA
SVRDEN
COC001-005-031-152330-
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE DENVER CO
502 PM MDT THU MAY 15 1997
THE NATIONAL WEATHER SERVICE IN DENVER HAS ISSUED A SEVERE
THUNDERSTORM WARNING EFFECTIVE UNTIL 530 PM MDT FOR PEOPLE IN THE
FOLLOWING COUNTIES...
IN NORTHEAST COLORADO
NORTHWESTERN ARAPAHOE...NORTHEAST DENVER AND SOUTHWESTERN ADAMS
INCLUDING THE FOLLOWING LOCATIONS
NORTHERN AURORA...COMMERCE CITY AND NORTHEASTERN DENVER
AT 457 PM MDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM OVER NORTH CENTRAL DENVER.
THE STORM WAS MOVING EAST AT 25 MILES PER HOUR.
AT 500 PM A WIND GUST TO 58 MPH WAS RECORDED AT THE WEATHER SERVICE
OFFICE IN NORTHEAST DENVER. STRONG AND DAMAGING WINDS ARE LIKELY IN
THE WARNING AREA. TAKE COVER IN A STURDY STRUCTURE UNTIL THE STORM
PASSES.
REPORT SEVERE WEATHER TO THE NEAREST LAW ENFORCEMENT AGENCY. THEY
WILL RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE FORECAST
OFFICE IN DENVER.
GIMMESTAD
LAT...LON 3975 10465 3966 10471 3975 10499 3981 10489
&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, May 15, 11:14 AM MDT, 5 hours 48 minutes before
COZ030-032>050-160600- SIGNIFICANT WEATHER OUTLOOK FOR NORTHEAST AND NORTH CENTRAL COLORADO NATIONAL WEATHER SERVICE DENVER COLORADO 1115 AM MDT THU MAY 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: WITH VERY WEAK TO NO UPPER LEVEL SUPPORT TODAY... THUNDERSTORM ACTIVITY SHOULD BE LIMITED ACROSS THE FORECAST AREA COMPARED TO YESTERDAY. HOWEVER MORE LOW LEVEL MOISTURE IS AVAILABLE TODAY. THIS MOISTURE ALONG WITH THE DAY'S HEATING WILL PRODUCE ISOLATED TO WIDELY SCATTERED SHOWERS AND THUNDERSTORM OVER THE PLAINS AFTER 3 PM. THE MOUNTAINS AND FOOTHILLS CAN EXPECT WIDELY SCATTERED SHOWERS AND THUNDERSTORMS TO DEVELOP BY 1 TO 2 PM. SPOTTER ACTIVATION IS NOT EXPECTED hTODAY. RJK
Special weather statement, May 15, 11:15 AM MDT, 5 hours 47 minutes before
COZ030-032>050-160600- SIGNIFICANT WEATHER OUTLOOK FOR NORTHEAST AND NORTH CENTRAL COLORADO NATIONAL WEATHER SERVICE DENVER COLORADO 1115 AM MDT THU MAY 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: WITH VERY WEAK TO NO UPPER LEVEL SUPPORT TODAY... THUNDERSTORM ACTIVITY SHOULD BE LIMITED ACROSS THE FORECAST AREA COMPARED TO YESTERDAY. HOWEVER MORE LOW LEVEL MOISTURE IS AVAILABLE TODAY. THIS MOISTURE ALONG WITH THE DAYS HEATING WILL PRODUCE ISOLATED TO WIDELY SCATTERED SHOWERS AND THUNDERSTORM OVER THE PLAINS AFTER 3 PM. THE MOUNTAINS AND FOOTHILLS CAN EXPECT WIDELY SCATTERED SHOWERS AND THUNDERSTORMS TO DEVELOP BY 1 TO 2 PM. SPOTTER ACTIVATION IS NOT EXPECTED TODAY. RJK
Special weather statement, May 15, 4:51 PM MDT, 11 minutes before
COZ040-152330- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE DENVER CO 451 PM MDT THU MAY 15 1997 ...THUNDERSTORMS WITH GUSTY WINDS MOVING ACROSS DENVER... AT 451 PM MDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A THUNDERSTORM OVER WHEAT RIDGE AND LAKEWOOD...OR ABOUT 6 MILES NORTHWEST AND WEST OF DENVER. THE STORM WAS MOVING SOUTHEAST AT 15 MILES PER HOUR AND WILL PRODUCE LIGHTNING AND WIND GUSTS OF 30 TO 50 MPH AS IT MOVES ACROSS THE DENVER METRO AREA BY 530 PM. BRIEF HEAVY RAIN AND SMALL HAIL ARE ALSO POSSIBLE. PERSONS IN THE DENVER METRO AREA SHOULD MOVE INDOORS DURING THIS STORM IF POSSIBLE. IF OUTDOORS...STAY AWAY FROM ISOLATED HIGH OBJECTS SUCH AS TREES. WHEN INDOORS...STAY AWAY FROM WINDOWS AND DOORS AND AVOID USING TELEPHONES UNLESS IT IS AN EMERGENCY. TRY TO UNPLUG UNNECESSARY ELECTRICAL APPLIANCES BEFORE THE THUNDERSTORM APPROACHES. GIMMESTAD
Special weather statement, May 15, 4:55 PM MDT, 7 minutes before
COZ040-152330- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE DENVER CO 451 PM MDT THU MAY 15 1997 ...THUNDERSTORMS WITH GUSTY WINDS MOVING ACROSS DENVER... AT 451 PM MDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A THUNDERSTORM OVER WHEAT RIDGE AND LAKEWOOD...OR ABOUT 6 MILES NORTHWEST AND WEST OF DENVER. THE STORM WAS MOVING SOUTHEAST AT 15 MILES PER HOUR AND WILL PRODUCE LIGHTNING AND WIND GUSTS OF 30 TO 50 MPH AS IT MOVES ACROSS THE DENVER METRO AREA BY 530 PM. BRIEF HEAVY RAIN AND SMALL HAIL ARE ALSO POSSIBLE. PERSONS IN THE DENVER METRO AREA SHOULD MOVE INDOORS DURING THIS STORM IF POSSIBLE. IF OUTDOORS...STAY AWAY FROM ISOLATED HIGH OBJECTS SUCH AS TREES. WHEN INDOORS...STAY AWAY FROM WINDOWS AND DOORS AND AVOID USING TELEPHONES UNLESS IT IS AN EMERGENCY. TRY TO UNPLUG UNNECESSARY ELECTRICAL APPLIANCES BEFORE THE THUNDERSTORM APPROACHES. GIMMESTAD
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.