Alert archive / Colorado / Severe Thunderstorm Warnings in 2003
Severe Thunderstorm Warning 101, NWS Denver/Boulder, CO
NWS Denver/Boulder, CO issued this severe thunderstorm warning at Jun 20, 2003, 12:32 PM MDT for 6 counties in Colorado. It was in force for 58 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Jun 20, 2003, 12:32 PM MDT (18:32 UTC)
- Expired
- Jun 20, 2003, 1:30 PM MDT
- In force
- 58 min
- Issued by
- NWS Denver/Boulder, CO
- Area
- Counties, with a storm outline in the text
Counties Adams County, CO, Arapahoe County, CO, Broomfield County, CO, Denver County, CO, Douglas County, CO, Elbert County, CO
The radar
The Denver radar (KFTG), 31 km from the middle of the area, began a volume at 18:35 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, 6.5 hours before the alert went out and 137 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 1432 m above ground
- 0-6 km bulk shear
- 9 kt
- 0-1 km storm-relative helicity
- -7 m²/s²
- 0-3 km storm-relative helicity
- -35 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
652 WUUS55 KBOU 201832 SVRBOU COC001-005-014-031-035-039-201930- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE DENVER CO 1231 PM MDT FRI JUN 20 2003 THE NATIONAL WEATHER SERVICE IN DENVER HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... NORTHWESTERN ELBERT COUNTY IN EAST CENTRAL COLORADO WESTERN ADAMS COUNTY IN NORTHEAST COLORADO WESTERN ARAPAHOE COUNTY IN NORTHEAST COLORADO CENTRAL BROOMFIELD COUNTY IN NORTHEAST COLORADO DENVER COUNTY IN NORTHEAST COLORADO THIS INCLUDES THE CITY OF DENVER NORTHEASTERN DOUGLAS COUNTY IN NORTHEAST COLORADO THIS INCLUDES THE CITY OF CASTLE ROCK * UNTIL 130 PM MDT * AT 1231 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM 2 MILES EAST OF CASTLE PINES...OR ABOUT 3 MILES NORTH OF CASTLE ROCK...MOVING NORTHEAST AT 20 MPH. LOCATIONS IN THE WARNING INCLUDE...BUT ARE NOT LIMITED TO...AURORA... CENTRAL BROOMFIELD...CENTENNIAL...COMMERCE CITY...DENVER... ENGLEWOOD...EASTERN LITTLETON...SOUTHWESTERN NORTHGLENN...THORNTON... EASTERN WESTMINSTER...DENVER INTERNATIONAL AIRPORT...ARAPAHOE PARK... BARR LAKE...BENNETT...BEVERLY HILLS...BRIGHTON...BUCKLEY AFB...CASTLE PINES...CASTLE ROCK...FEDERAL HEIGHTS...FRANKTOWN...GREENWOOD VILLAGE...HIGHLANDS RANCH...LOUVIERS...MANILA VILLAGE...PARKER... PONDEROSA PARK...SEDALIA...SHERIDAN...SURREY RIDGE...THE PINERY AND WATKINS. THIS IS A DANGEROUS STORM. IF YOU ARE IN ITS PATH YOU SHOULD PREPARE FOR DAMAGING WINDS IN EXCESS OF 58 MPH...LARGE HAIL...AND DEADLY LIGHTNING. PEOPLE OUTSIDE SHOULD MOVE TO A SHELTER...PREFERABLY INSIDE A STRONG BUILDING BUT AWAY FROM WINDOWS. 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. IF YOU ARE CAUGHT OUTSIDE...SEEK SHELTER FROM THE WEATHER IN A STRONG BUILDING. DAMAGING WIND...LARGE HAIL...VERY HEAVY RAIN...AND DEADLY LIGHTNING ARE ALL POSSIBLE IN SEVERE THUNDERSTORMS. STAY INSIDE AWAY FROM WINDOWS UNTIL THE STORM HAS PASSED. LAT...LON 3932 10502 3930 10469 4000 10420 3998 10504 $$ GARD...WFO BOULDER
The office that day
Everything else NWS Denver/Boulder, CO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 20, 11:53 AM MDT | Severe Thunderstorm Warning | BOU | Douglas, Jefferson, Park | 52 min |
| Jun 20, 12:22 PM MDT | Severe Thunderstorm Warning | BOU | Broomfield, Jefferson | 38 min |
| Jun 20, 3:05 PM MDT | Severe Thunderstorm Warning | BOU | Morgan | 40 min |
| Jun 20, 3:17 PM MDT | Severe Thunderstorm Warning | BOU | Adams | 43 min |
| Jun 20, 3:48 PM MDT | Severe Thunderstorm Warning | BOU | Adams, Morgan | 57 min |
| Jun 20, 4:41 PM MDT | Severe Thunderstorm Warning | BOU | Morgan | 64 min |
| Jun 20, 5:06 PM MDT | Severe Thunderstorm Warning | BOU | Washington | 54 min |
| Jun 20, 5:53 PM MDT | Tornado Warning | BOU | Logan | 52 min |
Nearby
Severe Thunderstorm Warnings in Colorado, 2003Every severe thunderstorm warning in 2003
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.