Alert archive / Colorado / Tornado Warnings in 2014

Tornado Warning 48, NWS Denver/Boulder, CO

June 6, 20144 counties in Colorado

NWS Denver/Boulder, CO issued this tornado warning at Jun 6, 2014, 3:12 PM MDT for 4 counties in Colorado. It was in force for 33 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 6, 2014, 3:12 PM MDT (21:12 UTC)
Expired
Jun 6, 2014, 3:45 PM MDT
In force
33 min
Issued by
NWS Denver/Boulder, CO
Area
Storm-based polygon
Tornado
Radar indicated
Hail
1.0 in

Counties Arapahoe County, CO, Elbert County, CO, Lincoln County, CO, Washington County, CO

The radar

The Denver radar (KFTG), 73 km from the middle of the area, began a volume at 21:13 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 6, 12:38 PM MDTSevere Thunderstorm WatchSPC7 hr

The nearest sounding before it

Denver, CO (KDEN), launched 12:00Z, 9.2 hours before the alert went out and 62 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 2014-06-06Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 367 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Denver, CO at 12:00Z on 2014-06-06The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 238 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
367 J/kg
Mixed-layer CIN
-256 J/kg
Mixed-layer LCL
1813 m above ground
0-6 km bulk shear
44 kt
0-1 km storm-relative helicity
238 m²/s²
0-3 km storm-relative helicity
212 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.

318 
WFUS55 KBOU 062112
TORBOU
COC005-039-073-121-062145-
/O.NEW.KBOU.TO.W.0048.140606T2112Z-140606T2145Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE DENVER CO
312 PM MDT FRI JUN 6 2014

THE NATIONAL WEATHER SERVICE IN DENVER HAS ISSUED A

* TORNADO WARNING FOR...
  SOUTHEASTERN ARAPAHOE COUNTY IN NORTHEAST COLORADO...
  NORTHEASTERN ELBERT COUNTY IN EAST CENTRAL COLORADO...
  SOUTHWESTERN WASHINGTON COUNTY IN NORTHEAST COLORADO...
  NORTH CENTRAL LINCOLN COUNTY IN EAST CENTRAL COLORADO...

* UNTIL 345 PM MDT
    
* AT 312 PM MDT...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A
  TORNADO WAS LOCATED 5 MILES SOUTH OF COTTONWOOD VALLEY...OR 20
  MILES NORTH OF LIMON...MOVING EAST AT 25 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...
  COTTONWOOD 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 3939 10393 3968 10392 3968 10353 3938 10355
TIME...MOT...LOC 2112Z 271DEG 21KT 3956 10378 

TORNADO...RADAR INDICATED
HAIL...1.00IN

$$

RPK
2 follow-up statements
111 
WWUS55 KBOU 062121
SVSBOU

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE DENVER CO
321 PM MDT FRI JUN 6 2014

COC005-039-073-121-062145-
/O.CON.KBOU.TO.W.0048.000000T0000Z-140606T2145Z/
ARAPAHOE CO-ELBERT CO-WASHINGTON CO-LINCOLN CO-
321 PM MDT FRI JUN 6 2014

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 345 PM MDT FOR
SOUTHEASTERN ARAPAHOE...NORTHEASTERN ELBERT...SOUTHWESTERN WASHINGTON
AND NORTH CENTRAL LINCOLN COUNTIES...
    
AT 320 PM MDT...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO
WAS LOCATED 7 MILES SOUTHEAST OF COTTONWOOD VALLEY...OR 20 MILES
NORTH OF LIMON...MOVING EAST AT 25 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...
COTTONWOOD 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 3939 10393 3968 10392 3968 10353 3938 10355
TIME...MOT...LOC 2120Z 271DEG 21KT 3956 10371 

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

$$

RPK
394 
WWUS55 KBOU 062141
SVSBOU

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE DENVER CO
341 PM MDT FRI JUN 6 2014

COC005-039-073-121-062150-
/O.EXP.KBOU.TO.W.0048.000000T0000Z-140606T2145Z/
ARAPAHOE CO-ELBERT CO-WASHINGTON CO-LINCOLN CO-
341 PM MDT FRI JUN 6 2014

...THE TORNADO WARNING FOR SOUTHEASTERN ARAPAHOE...NORTHEASTERN
ELBERT...SOUTHWESTERN WASHINGTON AND NORTH CENTRAL LINCOLN COUNTIES
WILL EXPIRE AT 345 PM MDT...
        
THE STORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE AREA.
THEREFORE THE WARNING WILL BE ALLOWED TO EXPIRE.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 800 PM MDT FRIDAY
EVENING FOR NORTHEAST COLORADO.

LAT...LON 3939 10393 3968 10392 3968 10353 3938 10355
TIME...MOT...LOC 2139Z 271DEG 21KT 3956 10371 

$$

RPK

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 5, 6:11 PM MDTSevere Thunderstorm WarningBOUArapahoe, Douglas, Elbert17 min
Jun 5, 6:13 PM MDTSevere Thunderstorm WarningBOULincoln47 min
Jun 5, 6:42 PM MDTTornado WarningBOULincoln33 min
Jun 5, 7:40 PM MDTSevere Thunderstorm WarningBOUDouglas, Elbert35 min
Jun 5, 8:39 PM MDTSevere Thunderstorm WarningBOUElbert36 min
Jun 5, 10:44 PM MDTSpecial Weather StatementBOUElbert46 min
Jun 6, 3:13 AM MDTSpecial Weather StatementBOULincoln47 min
Jun 6, 3:22 AM MDTSevere Thunderstorm WarningBOUElbert, Lincoln38 min
Jun 6, 3:59 AM MDTSevere Thunderstorm WarningBOULincoln31 min
Jun 6, 12:33 PM MDTSevere Thunderstorm WarningBOULogan42 min
Jun 6, 1:13 PM MDTSevere Thunderstorm WarningBOULogan, Sedgwick47 min
Jun 6, 1:29 PM MDTFlash Flood WarningBOULogan3 hr
Jun 6, 1:38 PM MDTTornado WarningBOUDouglas37 min
Jun 6, 1:41 PM MDTTornado WarningBOULogan, Sedgwick34 min
Jun 6, 1:50 PM MDTTornado WarningBOUWeld25 min
Jun 6, 1:53 PM MDTSevere Thunderstorm WarningBOULogan, Weld37 min
Jun 6, 1:58 PM MDTSevere Thunderstorm WarningBOUMorgan, Weld28 min
Jun 6, 2:08 PM MDTSevere Thunderstorm WarningBOUDouglas, Elbert33 min
Jun 6, 2:13 PM MDTTornado WarningBOUWeld17 min
Jun 6, 2:14 PM MDTTornado WarningBOUPhillips, Sedgwick31 min
Jun 6, 2:28 PM MDTSevere Thunderstorm WarningBOULogan, Weld32 min
Jun 6, 2:34 PM MDTTornado WarningBOUWeld26 min
Jun 6, 2:43 PM MDTTornado WarningBOUSedgwick32 min
Jun 6, 2:48 PM MDTTornado WarningBOUAdams, Arapahoe, Elbert27 min
Jun 6, 2:50 PM MDTTornado WarningBOUWeld25 min
Jun 6, 2:54 PM MDTTornado WarningBOUMorgan36 min
Jun 6, 2:56 PM MDTTornado Warning Tornado observedBOUMorgan, Weld19 min
Jun 6, 3:05 PM MDTTornado WarningBOULogan25 min
Jun 6, 3:10 PM MDTTornado WarningBOUPhillips, Sedgwick35 min
Jun 6, 3:19 PM MDTFlash Flood WarningBOUSedgwick3 hr
Jun 6, 3:36 PM MDTSevere Thunderstorm WarningBOUPhillips24 min
Jun 6, 4:19 PM MDTSevere Thunderstorm WarningBOUWashington26 min
Jun 6, 4:24 PM MDTAreal Flood AdvisoryBOUPhillips3 hr

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.