Alert archive / Colorado / Tornado Warnings in 2000
Tornado Warning 10, NWS Denver/Boulder, CO
NWS Denver/Boulder, CO issued this tornado warning at May 17, 2000, 3:43 PM MDT for Logan County, Colorado. It was in force for 47 min. 2 reports came from 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, with what was reported inside it.
The facts
- Issued
- May 17, 2000, 3:43 PM MDT (21:43 UTC)
- Expired
- May 17, 2000, 4:30 PM MDT
- In force
- 47 min
- Issued by
- NWS Denver/Boulder, CO
- Area
- Whole counties; the outline is the Mesonet’s reconstruction
County Logan County, CO
The radar
The Cheyenne radar (KCYS), 142 km from the middle of the area, began a volume at 21:45 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 |
|---|---|---|---|
| May 17, 3:47 PM MDT | Tornado F0 | Dailey, CO | |
| May 17, 4:00 PM MDT | Tornado F1 | Fleming, CO | A small tornado touched down, damaging some weather equipment and several nearby structures. |
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 nearest sounding before it
Denver, CO (KDNR), launched 12:00Z, 9.7 hours before the alert went out and 99 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
- 439 J/kg
- Mixed-layer CIN
- -205 J/kg
- Mixed-layer LCL
- 1040 m above ground
- 0-6 km bulk shear
- 65 kt
- 0-1 km storm-relative helicity
- 135 m²/s²
- 0-3 km storm-relative helicity
- 205 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.5
The text
As transmitted, in the capitals the NWS used until 2016.
693 WFUS55 KBOU 172145 TORDEN COC075-172230- BULLETIN - EAS ACTIVATION REQUESTED TORNADO WARNING NATIONAL WEATHER SERVICE DENVER CO 343 PM MDT WED MAY 17 2000 THE NATIONAL WEATHER SERVICE IN DENVER HAS ISSUED A * TORNADO WARNING FOR... CENTRAL LOGAN COUNTY IN NORTHEAST COLORADO THIS INCLUDES THE CITY OF STERLING * UNTIL 430 PM MDT * AT 343 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED SEVERAL THUNDERSTORMS CAPABLE OF PRODUCING TORNADOES OVER CENTRAL PORTIONS OF LOGAN COUNTY. AT 340 PM MDT A TORNADO WAS REPORTED IN THE TOWN OF DAILEY NEAR THE LOGAN-PHILLIPS COUNTY LINE. LOCATIONS IN THE WARNING INCLUDE...BUT ARE NOT LIMITED TO... STERLING...WILLARD...WESTPLAINS...ST PETERSBURG...PROCTOR...PAWNEE PASS...PADRONI...NORTH STERLING RESERVOIR...LOGAN CORNERS...ILIFF... FLEMING...CROOK AND ATWOOD THIS IS AN EXTREMELY DANGEROUS AND POTENTIALLY LIFE THREATENING SITUATION. IF YOU ARE IN THE PATH OF TORNADOES...TAKE COVER IMMEDIATELY. 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 4091 10355 4052 10356 4055 10268 4090 10266 KLEYLA
The office that day
Everything else NWS Denver/Boulder, CO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 17, 9:03 AM MDT | Severe Thunderstorm Warning | BOU | Boulder, Larimer | 27 min |
| May 17, 9:29 AM MDT | Severe Thunderstorm Warning | BOU | Arapahoe, Douglas, Jefferson | 41 min |
| May 17, 9:29 AM MDT | Severe Thunderstorm Warning | BOU | Adams, Denver | 41 min |
| May 17, 10:32 AM MDT | Severe Thunderstorm Warning | BOU | Arapahoe, Denver, Jefferson | 43 min |
| May 17, 10:32 AM MDT | Severe Thunderstorm Warning | BOU | Douglas | 43 min |
| May 17, 10:43 AM MDT | Severe Thunderstorm Warning | BOU | Larimer | 62 min |
| May 17, 12:19 PM MDT | Severe Thunderstorm Warning | BOU | Boulder, Jefferson | 41 min |
| May 17, 12:19 PM MDT | Severe Thunderstorm Warning | BOU | Adams, Arapahoe, Denver | 41 min |
| May 17, 12:19 PM MDT | Severe Thunderstorm Warning | BOU | Douglas | 41 min |
| May 17, 12:30 PM MDT | Severe Thunderstorm Warning | BOU | Morgan, Weld | 30 min |
| May 17, 12:50 PM MDT | Tornado Warning | BOU | Morgan, Washington | 40 min |
| May 17, 1:12 PM MDT | Severe Thunderstorm Warning | BOU | Weld | 48 min |
| May 17, 1:30 PM MDT | Tornado Warning | BOU | Morgan, Washington | 45 min |
| May 17, 1:42 PM MDT | Tornado Warning | BOU | Morgan, Weld | 48 min |
| May 17, 2:00 PM MDT | Tornado Warning | BOU | Adams, Arapahoe | 45 min |
| May 17, 2:17 PM MDT | Tornado Warning | BOU | Logan, Morgan, Washington | 43 min |
| May 17, 2:55 PM MDT | Tornado Warning | BOU | Phillips | 35 min |
| May 17, 2:59 PM MDT | Tornado Warning | BOU | Logan, Morgan | 46 min |
| May 17, 3:24 PM MDT | Tornado Warning | BOU | Phillips | 36 min |
| May 17, 3:56 PM MDT | Tornado Warning | BOU | Phillips, Sedgwick | 34 min |
Nearby
Tornado Warnings in Colorado, 2000Every tornado warning in 2000Tornadoes in 2000
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.