Alert archive / Colorado / Tornado Warnings in 2005
Tornado Warning 4, NWS Denver/Boulder, CO
NWS Denver/Boulder, CO issued this tornado warning at May 7, 2005, 1:47 PM MDT for Adams County, Arapahoe County, Colorado. It was in force for 47 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
- May 7, 2005, 1:47 PM MDT (19:47 UTC)
- Expired
- May 7, 2005, 2:34 PM MDT
- In force
- 47 min
- Issued by
- NWS Denver/Boulder, CO
- Area
- Counties, with a storm outline in the text
Counties Adams County, CO, Arapahoe County, CO
The radar
The Denver radar (KFTG), 39 km from the middle of the area, began a volume at 19:50 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, 7.8 hours before the alert went out and 73 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
- 185 J/kg
- Mixed-layer CIN
- -121 J/kg
- Mixed-layer LCL
- 1260 m above ground
- 0-6 km bulk shear
- 67 kt
- 0-1 km storm-relative helicity
- 74 m²/s²
- 0-3 km storm-relative helicity
- 74 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.2
The text
As transmitted, in the capitals the NWS used until 2016.
000 WFUS55 KBOU 071948 TORBOU COC001-005-072030- /O.NEW.KBOU.TO.W.0004.050507T1947Z-050507T2030Z/ BULLETIN - EAS ACTIVATION REQUESTED TORNADO WARNING NATIONAL WEATHER SERVICE DENVER CO 147 PM MDT SAT MAY 7 2005 THE NATIONAL WEATHER SERVICE IN DENVER HAS ISSUED A * TORNADO WARNING FOR... CENTRAL ADAMS COUNTY IN NORTHEAST COLORADO EASTERN ARAPAHOE COUNTY IN NORTHEAST COLORADO * UNTIL 230 PM MDT * AT 145 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO OVER SOUTH CENTRAL ADAMS COUNTY ABOUT 6 MILES NORTH OF BYERS...OR ABOUT 38 MILES SOUTHWEST OF FORT MORGAN. THIS STORM WAS MOVING EAST AT 25 MPH. * THE SEVERE THUNDERSTORM WILL REMAIN OVER MAINLY RURAL AREAS NORTH AND EAST OF BYERS. WHEN A TORNADO WARNING IS ISSUED BASED ON DOPPLER RADAR...IT MEANS THAT STRONG ROTATION HAS BEEN DETECTED IN THE STORM. A TORNADO MAY ALREADY BE ON THE GROUND...OR IS EXPECTED TO DEVELOP SHORTLY. IF YOU ARE IN THE PATH OF THIS DANGEROUS STORM...MOVE INDOORS AND TO THE LOWEST LEVEL OF THE BUILDING. STAY AWAY FROM WINDOWS. IF DRIVING...DO NOT SEEK SHELTER UNDER A HIGHWAY OVERPASS. LAT...LON 3990 10423 3970 10421 3957 10389 3989 10386 $$ GIMMESTAD
3 follow-up statements
000 WWUS55 KBOU 072003 SVSBOU SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE DENVER CO 203 PM MDT SAT MAY 7 2005 COC001-005-072030- /O.CON.KBOU.TO.W.0004.000000T0000Z-050507T2030Z/ ARAPAHOE CO-ADAMS CO- 203 PM MDT SAT MAY 7 2005 ...A TORNADO WARNING CONTINUES UNTIL 230 PM MDT FOR EAST CENTRAL ADAMS AND EASTERN ARAPAHOE COUNTIES... AT 200 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THIS STORM WAS LOCATED OVER EXTREME SOUTH CENTRAL ADAMS COUNTY ABOUT 8 MILES NORTHEAST OF BYERS...OR ABOUT 39 MILES SOUTHWEST OF FORT MORGAN. THIS STORM WAS MOVING SOUTHEAST AT 25 MPH. THE SEVERE THUNDERSTORM WILL REMAIN OVER MAINLY RURAL AREAS EAST AND NORTHEAST OF BYERS. REPORT SEVERE WEATHER TO THE NEAREST LAW ENFORCEMENT AGENCY. THEY WILL RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE FORECAST OFFICE IN DENVER. LAT...LON 3990 10414 3967 10414 3957 10389 3989 10386 $$ GIMMESTAD
000 WWUS55 KBOU 072023 SVSBOU SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE DENVER CO 222 PM MDT SAT MAY 7 2005 COC001-005-072030- /O.CON.KBOU.TO.W.0004.000000T0000Z-050507T2030Z/ ARAPAHOE CO-ADAMS CO- 222 PM MDT SAT MAY 7 2005 ...A TORNADO WARNING CONTINUES UNTIL 230 PM MDT FOR EAST CENTRAL ADAMS AND EASTERN ARAPAHOE COUNTIES... AT 220 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THIS STORM WAS LOCATED OVER EXTREME EASTERN ARAPAHOE AND EXTREME EASTERN ADMAS COUNTIES...OR ABOUT 34 MILES NORTH OF LIMON. THE AREAS WHERE TORNADOES ARE POSSIBLE ARE 15 MILES EAST OF BYERS AND BETWEEN LEADER AND SHAMROCK. THIS STORM WAS MOVING EAST AT 25 MPH. THE SEVERE THUNDERSTORM WILL REMAIN OVER MAINLY RURAL AREAS OF THE WARNED COUNTIES. IF YOU ARE CAUGHT OUTSIDE...SEEK SHELTER IN A NEARBY REINFORCED BUILDING. AS A LAST RESORT...SEEK SHELTER IN A CULVERT...DITCH OR LOW SPOT AND COVER YOUR HEAD WITH YOUR HANDS. LAT...LON 3990 10399 3964 10406 3957 10380 3989 10383 $$ GIMMESTAD
000 WWUS55 KBOU 072034 SVSBOU SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE DENVER CO 234 PM MDT SAT MAY 7 2005 COC001-005-072044- /O.EXP.KBOU.TO.W.0004.000000T0000Z-050507T2030Z/ ARAPAHOE CO-ADAMS CO- 234 PM MDT SAT MAY 7 2005 ...THE TORNADO WARNING FOR EAST CENTRAL ADAMS AND EASTERN ARAPAHOE COUNTIES EXPIRED AT 230 PM MDT... THE THUNDERSTORM THAT PROMPTED THE WARNING HAS WEAKENED AND IS NO LONGER EXPECTED TO PRODUCE SEVERE WEATHER. LAT...LON 3990 10399 3964 10406 3957 10380 3989 10383 $$ GIMMESTAD
The office that day
Everything else NWS Denver/Boulder, CO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 6, 6:18 PM MDT | Severe Thunderstorm Warning | BOU | Logan | 30 min |
| May 6, 9:52 PM MDT | Severe Thunderstorm Warning | BOU | Lincoln | 38 min |
| May 7, 12:50 PM MDT | Severe Thunderstorm Warning | BOU | Adams, Weld | 55 min |
| May 7, 12:54 PM MDT | Tornado Warning | BOU | Adams | 37 min |
Nearby
Tornado Warnings in Colorado, 2005Every tornado warning in 2005Tornadoes in 2005
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.