Alert archive / Colorado / Tornado Warnings in 2014
Tornado Warning 74, NWS Denver/Boulder, CO
NWS Denver/Boulder, CO issued this tornado warning at Jun 21, 2014, 3:14 PM MDT for Adams County, Arapahoe County, Colorado. It was in force for 18 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 21, 2014, 3:14 PM MDT (21:14 UTC)
- Expired
- Jun 21, 2014, 3:32 PM MDT
- In force
- 18 min
- Issued by
- NWS Denver/Boulder, CO
- Area
- Storm-based polygon
- Tornado
- Radar indicated
- Hail
- 0.0 in
Counties Adams County, CO, Arapahoe County, CO
The radar
The Denver radar (KFTG), 11 km from the middle of the area, began a volume at 21:14 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, 9.2 hours before the alert went out and 103 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
- 37 J/kg
- Mixed-layer CIN
- -319 J/kg
- Mixed-layer LCL
- 2293 m above ground
- 0-6 km bulk shear
- 33 kt
- 0-1 km storm-relative helicity
- -29 m²/s²
- 0-3 km storm-relative helicity
- 20 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- -0.0
The text
As transmitted, in the capitals the NWS used until 2016.
964
WFUS55 KBOU 212114
TORBOU
COC001-005-212145-
/O.NEW.KBOU.TO.W.0074.140621T2114Z-140621T2145Z/
BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE DENVER CO
314 PM MDT SAT JUN 21 2014
THE NATIONAL WEATHER SERVICE IN DENVER HAS ISSUED A
* TORNADO WARNING FOR...
NORTH CENTRAL ARAPAHOE COUNTY IN NORTHEAST COLORADO...
SOUTH CENTRAL ADAMS COUNTY IN NORTHEAST COLORADO...
* UNTIL 345 PM MDT
* AT 314 PM MDT...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A
TORNADO WAS LOCATED NEAR BENNETT...OR 26 MILES EAST OF DENVER...
MOVING NORTHEAST AT 10 MPH.
HAZARD...TORNADO.
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...
BENNETT...MANILA VILLAGE AND STRASBURG.
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 IN A MOBILE HOME...A
VEHICLE OR OUTDOORS...MOVE TO THE CLOSEST SUBSTANTIAL SHELTER AND
PROTECT YOURSELF FROM FLYING DEBRIS.
&&
LAT...LON 3970 10449 3977 10454 3983 10448 3986 10433
3977 10428 3969 10438
TIME...MOT...LOC 2114Z 238DEG 7KT 3976 10446
TORNADO...RADAR INDICATED
HAIL...0.00IN
$$
RJK1 follow-up statement
394
WWUS55 KBOU 212132
SVSBOU
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE DENVER CO
332 PM MDT SAT JUN 21 2014
COC001-005-212142-
/O.CAN.KBOU.TO.W.0074.000000T0000Z-140621T2145Z/
ARAPAHOE CO-ADAMS CO-
332 PM MDT SAT JUN 21 2014
...THE TORNADO WARNING FOR NORTH CENTRAL ARAPAHOE AND SOUTH CENTRAL
ADAMS COUNTIES IS CANCELLED...
THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED BELOW SEVERE
LIMITS...AND NO LONGER APPEARS CAPABLE OF PRODUCING A TORNADO.
THEREFORE THE WARNING HAS BEEN CANCELLED.
LAT...LON 3970 10449 3977 10454 3983 10448 3986 10433
3977 10428 3969 10438
TIME...MOT...LOC 2130Z 238DEG 7KT 3978 10442
$$
RJKThe office that day
Everything else NWS Denver/Boulder, CO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 20, 11:33 PM MDT | Special Weather Statement | BOU | Washington | 57 min |
| Jun 21, 12:31 AM MDT | Special Weather Statement | BOU | Washington | 59 min |
| Jun 21, 2:41 PM MDT | Tornado Warning | BOU | Adams, Weld | 16 min |
| Jun 21, 2:47 PM MDT | Tornado Warning | BOU | Adams | 28 min |
| Jun 21, 3:43 PM MDT | Severe Thunderstorm Warning | BOU | Weld | 27 min |
Nearby
Tornado Warnings in Colorado, 2014Every tornado warning in 2014Tornadoes in 2014
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.