Alert archive / Colorado / Tornado Warnings in 2014
Tornado Warning 72, NWS Denver/Boulder, CO
NWS Denver/Boulder, CO issued this tornado warning at Jun 21, 2014, 2:41 PM MDT for Adams County, Weld County, Colorado. It was in force for 16 min. 1 report came from inside the area while it was in force.
The area
The outline as issued, with what was reported inside it.
The facts
- Issued
- Jun 21, 2014, 2:41 PM MDT (20:41 UTC)
- Expired
- Jun 21, 2014, 2:57 PM MDT
- In force
- 16 min
- Issued by
- NWS Denver/Boulder, CO
- Area
- Storm-based polygon
- Tornado
- Radar indicated
- Hail
- 0.0 in
Counties Adams County, CO, Weld County, CO
The radar
The Denver radar (KFTG), 24 km from the middle of the area, began a volume at 20:42 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 |
|---|---|---|---|
| Jun 21, 2:42 PM MDT | TORNADO | 2 S Hudson, CO | MINOR DAMAGE TO STRUCTURES AND ROOFS WITH LARGE DUST CLOUD |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Denver, CO (KDEN), launched 12:00Z, 8.7 hours before the alert went out and 110 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.
021
WFUS55 KBOU 212041
TORBOU
COC001-123-212115-
/O.NEW.KBOU.TO.W.0072.140621T2041Z-140621T2115Z/
BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE DENVER CO
241 PM MDT SAT JUN 21 2014
THE NATIONAL WEATHER SERVICE IN DENVER HAS ISSUED A
* TORNADO WARNING FOR...
SOUTHWESTERN WELD COUNTY IN NORTHEAST COLORADO...
NORTH CENTRAL ADAMS COUNTY IN NORTHEAST COLORADO...
* UNTIL 315 PM MDT
* AT 241 PM MDT...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A
TORNADO WAS LOCATED 6 MILES SOUTHEAST OF HUDSON...OR 28 MILES
NORTHEAST OF DENVER...MOVING NORTHEAST AT 20 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...
HUDSON AND PROSPECT VALLEY.
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 3992 10461 4006 10467 4011 10443 4007 10435
3994 10436
TIME...MOT...LOC 2041Z 236DEG 16KT 3999 10456
TORNADO...RADAR INDICATED
HAIL...0.00IN
$$
RJK1 follow-up statement
589
WWUS55 KBOU 212057
SVSBOU
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE DENVER CO
257 PM MDT SAT JUN 21 2014
COC001-123-212107-
/O.CAN.KBOU.TO.W.0072.000000T0000Z-140621T2115Z/
WELD CO-ADAMS CO-
257 PM MDT SAT JUN 21 2014
...THE TORNADO WARNING FOR SOUTHWESTERN WELD AND NORTH CENTRAL ADAMS
COUNTIES IS CANCELLED...
THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED BELOW SEVERE LIMITS
AND EXITED THE WARNED AREA. THEREFORE THE WARNING HAS BEEN CANCELLED.
LAT...LON 3992 10461 4006 10467 4011 10443 4007 10435
3994 10436
TIME...MOT...LOC 2055Z 236DEG 16KT 4003 10448
$$
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, 2:47 PM MDT | Tornado Warning | BOU | Adams | 28 min |
| Jun 21, 3:14 PM MDT | Tornado Warning | BOU | Adams, Arapahoe | 18 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.