Alert archive / Colorado / Tornado Warnings in 2015
Tornado Warning 45, NWS Denver/Boulder, CO
NWS Denver/Boulder, CO issued this tornado warning at Jun 24, 2015, 5:09 PM MDT for Adams County, Denver County, Colorado. It was in force for 21 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 24, 2015, 5:09 PM MDT (23:09 UTC)
- Expired
- Jun 24, 2015, 5:30 PM MDT
- In force
- 21 min
- Issued by
- NWS Denver/Boulder, CO
- Area
- Storm-based polygon
- Tornado
- Radar indicated
- Hail
- 1.0 in
Counties Adams County, CO, Denver County, CO
The radar
The Denver radar (KFTG), 25 km from the middle of the area, began a volume at 23:10 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 (KDEN), launched 12:00Z, 11.2 hours before the alert went out and 138 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
- 145 J/kg
- Mixed-layer CIN
- -342 J/kg
- Mixed-layer LCL
- 3002 m above ground
- 0-6 km bulk shear
- 23 kt
- 0-1 km storm-relative helicity
- 70 m²/s²
- 0-3 km storm-relative helicity
- 48 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
826
WFUS55 KBOU 242309
TORBOU
COC001-031-242330-
/O.NEW.KBOU.TO.W.0045.150624T2309Z-150624T2330Z/
BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE DENVER CO
509 PM MDT WED JUN 24 2015
THE NATIONAL WEATHER SERVICE IN DENVER HAS ISSUED A
* TORNADO WARNING FOR...
SOUTHWESTERN ADAMS COUNTY IN NORTHEASTERN COLORADO...
CENTRAL DENVER COUNTY IN NORTHEASTERN COLORADO...
* UNTIL 530 PM MDT
* AT 506 PM MDT...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A
TORNADO WAS LOCATED NEAR COMMERCE CITY...OR 7 MILES NORTHEAST OF
DENVER...MOVING NORTH AT 10 MPH.
HAZARD...TORNADO AND QUARTER SIZE HAIL.
SOURCE...RADAR INDICATED ROTATION.
IMPACT...FLYING DEBRIS WILL BE DANGEROUS TO THOSE CAUGHT WITHOUT
SHELTER. MOBILE HOMES WILL BE DAMAGED OR DESTROYED.
DAMAGE TO ROOFS...WINDOWS AND VEHICLES WILL OCCUR. TREE
DAMAGE IS LIKELY.
* LOCATIONS IMPACTED INCLUDE...
NORTHEASTERN DENVER...NORTHWESTERN AURORA AND SOUTHWESTERN DENVER
INTERNATIONAL AIRPORT.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TAKE COVER NOW! MOVE TO A BASEMENT OR AN INTERIOR ROOM ON THE LOWEST
FLOOR OF A STURDY BUILDING. AVOID WINDOWS. IF YOU ARE IN A MOBILE
HOME...A VEHICLE OR OUTDOORS...MOVE TO THE CLOSEST SUBSTANTIAL
SHELTER AND PROTECT YOURSELF FROM FLYING DEBRIS.
&&
LAT...LON 3974 10490 3984 10490 3984 10474 3974 10474
TIME...MOT...LOC 2306Z 158DEG 26KT 3981 10487
TORNADO...RADAR INDICATED
HAIL...1.00IN
$$
COOPER1 follow-up statement
253
WWUS55 KBOU 242324
SVSBOU
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE DENVER CO
524 PM MDT WED JUN 24 2015
COC001-031-242331-
/O.EXP.KBOU.TO.W.0045.000000T0000Z-150624T2330Z/
ADAMS CO-DENVER CO-
524 PM MDT WED JUN 24 2015
...THE TORNADO WARNING FOR SOUTHWESTERN ADAMS AND CENTRAL DENVER
COUNTIES WILL EXPIRE AT 530 PM MDT...
THE TORNADIC THUNDERSTORM WHICH PROMPTED THE WARNING HAS WEAKENED.
THEREFORE THE WARNING WILL BE ALLOWED TO EXPIRE. HOWEVER HEAVY RAIN
IS STILL OCCURRING WITH THIS STORM AND FLASH FLOODING HAS BEEN
REPORTED AS NEARLY 2 INCHES OF RAIN HAS FALLEN IN CENTRAL AND EAST
CENTRAL PARTS OF DENVER.
LAT...LON 3974 10490 3984 10490 3984 10474 3974 10474
TIME...MOT...LOC 2320Z 158DEG 26KT 3981 10487
$$
COOPERThe office that day
Everything else NWS Denver/Boulder, CO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 23, 7:09 PM MDT | Severe Thunderstorm Warning | BOU | Lincoln | 36 min |
| Jun 23, 7:15 PM MDT | Special Weather Statement | BOU | Denver | 30 min |
| Jun 23, 7:30 PM MDT | Severe Thunderstorm Warning | BOU | Morgan, Weld | 17 min |
| Jun 23, 7:32 PM MDT | Severe Thunderstorm Warning | BOU | Lincoln | 28 min |
| Jun 23, 7:52 PM MDT | Special Weather Statement | BOU | Denver | 23 min |
| Jun 23, 9:15 PM MDT | Severe Thunderstorm Warning | BOU | Washington | 30 min |
| Jun 24, 3:36 PM MDT | Special Weather Statement | BOU | Elbert | 39 min |
| Jun 24, 4:45 PM MDT | Severe Thunderstorm Warning | BOU | Adams, Arapahoe, Denver, Jefferson | 45 min |
| Jun 24, 5:00 PM MDT | Tornado Warning | BOU | Arapahoe, Denver | 19 min |
| Jun 24, 5:08 PM MDT | Areal Flood Advisory | BOU | Adams, Arapahoe, Denver | 52 min |
| Jun 24, 5:22 PM MDT | Flash Flood Warning | BOU | Adams, Arapahoe, Denver | 113 min |
Nearby
Tornado Warnings in Colorado, 2015Every tornado warning in 2015Tornadoes in 2015
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.