Alert archive / Colorado / Tornado Warnings in 2002
Tornado Warning 26, NWS Denver/Boulder, CO
NWS Denver/Boulder, CO issued this tornado warning at Aug 28, 2002, 8:30 PM MDT for Weld County, Colorado. It was in force for 45 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
- Aug 28, 2002, 8:30 PM MDT (02:30 UTC)
- Expired
- Aug 28, 2002, 9:15 PM MDT
- In force
- 45 min
- Issued by
- NWS Denver/Boulder, CO
- Area
- Counties, with a storm outline in the text
County Weld County, CO
The radar
The Cheyenne radar (KCYS), 65 km from the middle of the area, began a volume at 02:33 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 00:00Z, 2.5 hours before the alert went out and 131 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
- 233 J/kg
- Mixed-layer CIN
- -169 J/kg
- Mixed-layer LCL
- 2250 m above ground
- 0-6 km bulk shear
- 21 kt
- 0-1 km storm-relative helicity
- -70 m²/s²
- 0-3 km storm-relative helicity
- -126 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- -0.7
The text
As transmitted, in the capitals the NWS used until 2016.
950 WFUS55 KBOU 290230 TORDEN COC123-290315- BULLETIN - EAS ACTIVATION REQUESTED TORNADO WARNING NATIONAL WEATHER SERVICE DENVER CO 828 PM MDT WED AUG 28 2002 THE NATIONAL WEATHER SERVICE IN DENVER HAS ISSUED A * TORNADO WARNING FOR... CENTRAL WELD COUNTY IN NORTHEAST COLORADO * UNTIL 915 PM MDT * AT 826 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A THUNDERSTORM WITH A POSSIBLE TORNADO 3 MILES SOUTHEAST OF GROVER... OR ABOUT 38 MILES SOUTHEAST OF CHEYENNE...MOVING SOUTHEAST AT 25 MPH. LOCATIONS IN THE WARNING INCLUDE...BUT ARE NOT LIMITED TO... BRIGGSDALE...GROVER...KEOTA AND PAWNEE BUTTES. THIS TORNADO WARNING REPLACES THE PREVIOUS TORNADO WARNING FOR NORTH CENTRAL WELD COUNTY. ADDITIONAL STORMS ARE ALSO DEVELOPING FURTHER SOUTHWEST...JUST NORTH OF BRIGGSDALE...AND MAY ALSO A BRIEF TORNADO AND LARGE HAIL IN EXCESS OF ONE INCH IN DIAMETER. THIS STORM HAS HAD A HISTORY OF TORNADOES AND LARGE HAIL. THE SAFEST PLACE TO BE DURING A TORNADO IS IN A BASEMENT. GET UNDER A WORKBENCH OR OTHER PIECE OF STURDY FURNITURE. IF NO BASEMENT IS AVAILABLE...SEEK SHELTER ON THE LOWEST FLOOR OF THE BUILDING IN AN INTERIOR HALLWAY OR ROOM SUCH AS A CLOSET. USE BLANKETS OR PILLOWS TO COVER YOUR BODY AND ALWAYS STAY AWAY FROM WINDOWS. LAT...LON 4092 10446 4048 10447 4058 10379 4099 10389 SWE
The office that day
Everything else NWS Denver/Boulder, CO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 28, 7:09 PM MDT | Flash Flood Warning | BOU | Washington | 3 hr |
| Aug 28, 7:39 PM MDT | Severe Thunderstorm Warning | BOU | Washington | 36 min |
| Aug 28, 7:39 PM MDT | Tornado Warning | BOU | Weld | 51 min |
| Aug 28, 9:16 PM MDT | Tornado Warning | BOU | Morgan, Weld | 44 min |
| Aug 29, 3:12 PM MDT | Tornado Warning | BOU | Adams, Arapahoe, Denver, Douglas | 48 min |
| Aug 29, 3:27 PM MDT | Severe Thunderstorm Warning | BOU | Weld | 63 min |
| Aug 29, 3:56 PM MDT | Severe Thunderstorm Warning | BOU | Weld | 54 min |
Nearby
Tornado Warnings in Colorado, 2002Every tornado warning in 2002Tornadoes in 2002
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.