Alert archive / Colorado / Tornado Warnings in 2014

Tornado Warning 60, NWS Denver/Boulder, CO

June 8, 2014Adams County, Colorado

NWS Denver/Boulder, CO issued this tornado warning at Jun 8, 2014, 1:34 PM MDT for Adams County, Colorado. It was in force for 26 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 8, 2014, 1:34 PM MDT (19:34 UTC)
Expired
Jun 8, 2014, 2:00 PM MDT
In force
26 min
Issued by
NWS Denver/Boulder, CO
Area
Storm-based polygon
Tornado
Radar indicated
Hail
1.25 in

County Adams County, CO

The radar

The Denver radar (KFTG), 27 km from the middle of the area, began a volume at 19:36 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
Jun 8, 12:19 PM MDTTornado WatchSPC8 hr

The nearest sounding before it

Denver, CO (KDEN), launched 12:00Z, 7.6 hours before the alert went out and 86 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.

Skew-T log-pSkew-T log-p diagram, Denver, CO at 12:00Z on 2014-06-08Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 430 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Denver, CO at 12:00Z on 2014-06-08The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 123 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
430 J/kg
Mixed-layer CIN
-348 J/kg
Mixed-layer LCL
924 m above ground
0-6 km bulk shear
34 kt
0-1 km storm-relative helicity
123 m²/s²
0-3 km storm-relative helicity
87 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

867 
WFUS55 KBOU 081934
TORBOU
COC001-082000-
/O.NEW.KBOU.TO.W.0060.140608T1934Z-140608T2000Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE DENVER CO
134 PM MDT SUN JUN 8 2014

THE NATIONAL WEATHER SERVICE IN DENVER HAS ISSUED A

* TORNADO WARNING FOR...
  CENTRAL ADAMS COUNTY IN NORTHEAST COLORADO...

* UNTIL 200 PM MDT
    
* AT 132 PM MDT...A SEVERE THUNDERSTORMS CAPABLE OF PRODUCING A 
  TORNADO ACROSS CENTRAL ADAMS COUTY FROM SOUTHWEST OF HOYT TO 
  JUST NORTH OF STRASBURG ...MOVING EAST AT 20 MPH.

  HAZARD...TORNADO AND HALF DOLLAR 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...
  BENNETT...LEADER 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 3974 10444 4000 10431 4000 10396 3974 10404
TIME...MOT...LOC 1932Z 279DEG 17KT 3990 10421 

TORNADO...RADAR INDICATED
HAIL...1.25IN

$$

RPK
1 follow-up statement
343 
WWUS55 KBOU 082003
SVSBOU

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE DENVER CO
203 PM MDT SUN JUN 8 2014

COC001-082013-
/O.EXP.KBOU.TO.W.0060.000000T0000Z-140608T2000Z/
ADAMS CO-
203 PM MDT SUN JUN 8 2014

...THE TORNADO WARNING FOR CENTRAL ADAMS COUNTY HAS EXPIRED...
                
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 ALLOWED TO EXPIRE.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 800 PM MDT SUNDAY EVENING FOR
NORTHEAST COLORADO.

LAT...LON 3974 10444 4000 10431 4000 10396 3974 10404
TIME...MOT...LOC 2000Z 279DEG 17KT 3990 10421 

$$

RPK

The office that day

Everything else NWS Denver/Boulder, CO issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jun 8, 12:23 PM MDTTornado WarningBOUPark22 min
Jun 8, 12:36 PM MDTTornado WarningBOUDouglas24 min
Jun 8, 12:42 PM MDTSevere Thunderstorm WarningBOUArapahoe, Douglas33 min
Jun 8, 12:45 PM MDTTornado WarningBOUPark15 min
Jun 8, 12:49 PM MDTTornado WarningBOUArapahoe, Douglas26 min
Jun 8, 12:53 PM MDTTornado WarningBOUWeld37 min
Jun 8, 1:00 PM MDTTornado WarningBOUWeld30 min
Jun 8, 1:07 PM MDTTornado WarningBOUAdams23 min
Jun 8, 1:09 PM MDTTornado WarningBOUDouglas36 min
Jun 8, 1:20 PM MDTTornado WarningBOUArapahoe, Elbert25 min
Jun 8, 1:25 PM MDTTornado WarningBOUWeld35 min
Jun 8, 1:27 PM MDTTornado WarningBOUMorgan, Weld33 min
Jun 8, 1:43 PM MDTTornado WarningBOUArapahoe, Elbert32 min
Jun 8, 1:59 PM MDTTornado WarningBOUWeld31 min
Jun 8, 2:12 PM MDTTornado WarningBOUAdams, Arapahoe, Elbert33 min
Jun 8, 2:38 PM MDTFlash Flood WarningBOUMorgan, Weld3 hr
Jun 8, 2:46 PM MDTSevere Thunderstorm WarningBOUAdams, Arapahoe, Washington29 min
Jun 8, 3:08 PM MDTSevere Thunderstorm WarningBOUWashington37 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.