Alert archive / Colorado / Tornado Warnings in 2001
Tornado Warning 52, NWS Denver/Boulder, CO
NWS Denver/Boulder, CO issued this tornado warning at Aug 13, 2001, 2:17 PM MDT for Adams 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
- Aug 13, 2001, 2:17 PM MDT (20:17 UTC)
- Expired
- Aug 13, 2001, 2:45 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, Denver County, CO
The radar
The Denver radar (KFTG), 17 km from the middle of the area, began a volume at 20:16 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
Grand Junction, CO (KGJT), launched 12:00Z, 8.3 hours before the alert went out and 341 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
- 14 J/kg
- Mixed-layer CIN
- -243 J/kg
- Mixed-layer LCL
- 2424 m above ground
- 0-6 km bulk shear
- 20 kt
- 0-1 km storm-relative helicity
- -32 m²/s²
- 0-3 km storm-relative helicity
- -15 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
657 WFUS55 KBOU 132017 TORDEN COC001-031-132045- BULLETIN - EAS ACTIVATION REQUESTED TORNADO WARNING NATIONAL WEATHER SERVICE DENVER CO 217 PM MDT MON AUG 13 2001 THE NATIONAL WEATHER SERVICE IN DENVER HAS ISSUED A * TORNADO WARNING FOR... WESTERN ADAMS COUNTY IN NORTHEAST COLORADO NORTHEASTERN DENVER COUNTY IN NORTHEAST COLORADO * UNTIL 245 PM MDT * AT 217 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A THUNDERSTORM WITH A POSSIBLE TORNADO OVER CENTRAL DENVER INTERNATIONAL AIRPORT...OR ABOUT 17 MILES NORTHEAST OF DENVER... MOVING NORTHEAST AT 20 MPH. LOCATIONS IN THE WARNING INCLUDE...BUT ARE NOT LIMITED TO...NORTH CENTRAL AURORA...NORTHEASTERN COMMERCE CITY AND DENVER INTERNATIONAL AIRPORT. 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. IF IN MOBILE HOMES OR VEHICLES...EVACUATE THEM AND GET INSIDE A SUBSTANTIAL SHELTER. IF NO SHELTER IS AVAILABLE...LIE FLAT IN THE NEAREST DITCH OR OTHER LOW SPOT AND COVER YOUR HEAD WITH YOUR HANDS. LAT...LON 3991 10483 3975 10472 4000 10426 4000 10466
The office that day
Everything else NWS Denver/Boulder, CO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 13, 1:59 PM MDT | Severe Thunderstorm Warning | BOU | Adams, Arapahoe, Denver | 46 min |
| Aug 13, 2:30 PM MDT | Severe Thunderstorm Warning | BOU | Douglas, Jefferson | 45 min |
| Aug 13, 2:46 PM MDT | Severe Thunderstorm Warning | BOU | Washington | 29 min |
| Aug 13, 3:30 PM MDT | Flash Flood Warning | BOU | Washington | 90 min |
| Aug 13, 4:02 PM MDT | Flash Flood Warning | BOU | Washington | 88 min |
| Aug 13, 4:55 PM MDT | Flash Flood Warning | BOU | Washington | 95 min |
| Aug 13, 5:15 PM MDT | Flash Flood Warning | BOU | Washington | 105 min |
Nearby
Tornado Warnings in Colorado, 2001Every tornado warning in 2001Tornadoes in 2001
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.