Alert archive / Colorado / Tornado Warnings in 2014

Tornado Warning 82, NWS Denver/Boulder, CO

August 27, 2014Elbert County, Colorado

NWS Denver/Boulder, CO issued this tornado warning at Aug 27, 2014, 4:47 PM MDT for Elbert County, Colorado. It was in force for 28 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: Aug 27, 2014, 4:47 PM MDT (22:47 UTC)
Expired: Aug 27, 2014, 5:15 PM MDT
In force: 28 min
Issued by: NWS Denver/Boulder, CO
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 1.0 in

County Elbert County, CO

The radar

The Denver radar (KFTG), 60 km from the middle of the area, began a volume at 22:49 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, 10.8 hours before the alert went out and 124 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 1 J/kg
Mixed-layer CIN: -181 J/kg
Mixed-layer LCL: 1491 m above ground
0-6 km bulk shear: 24 kt
0-1 km storm-relative helicity: 14 m²/s²
0-3 km storm-relative helicity: 44 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.

547 
WFUS55 KBOU 272247
TORBOU
COC039-272315-
/O.NEW.KBOU.TO.W.0082.140827T2247Z-140827T2315Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE DENVER CO
447 PM MDT WED AUG 27 2014

THE NATIONAL WEATHER SERVICE IN DENVER HAS ISSUED A

* TORNADO WARNING FOR...
  WEST CENTRAL ELBERT COUNTY IN EAST CENTRAL COLORADO...

* UNTIL 515 PM MDT
    
* AT 447 PM MDT...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A
  TORNADO WAS LOCATED NEAR ELBERT...OR 32 MILES NORTHEAST OF COLORADO
  SPRINGS...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...
  ELBERT.

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 3918 10456 3929 10457 3937 10433 3925 10419
TIME...MOT...LOC 2247Z 250DEG 20KT 3923 10450 

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

$$

BARJENBRUCH

1 follow-up statement

069 
WWUS55 KBOU 272302
SVSBOU

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE DENVER CO
502 PM MDT WED AUG 27 2014

COC039-272315-
/O.CON.KBOU.TO.W.0082.000000T0000Z-140827T2315Z/
ELBERT CO-
502 PM MDT WED AUG 27 2014

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 515 PM MDT FOR WEST
CENTRAL ELBERT COUNTY...
    
AT 501 PM MDT...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO
WAS LOCATED 6 MILES EAST OF ELBERT...OR 35 MILES NORTHEAST OF
COLORADO SPRINGS...MOVING EAST AT 20 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. 

THIS TORNADIC THUNDERSTORM WILL REMAIN OVER MAINLY RURAL AREAS OF
WEST CENTRAL ELBERT COUNTY...WHICH INCLUDES FONDIS.

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 3921 10447 3929 10450 3937 10433 3925 10419
TIME...MOT...LOC 2301Z 251DEG 16KT 3925 10442 

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

$$

BARJENBRUCH

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 27, 2:43 PM MDT	Special Weather Statement	BOU	Boulder	47 min
Aug 27, 3:34 PM MDT	Areal Flood Advisory	BOU	Boulder	56 min
Aug 27, 4:21 PM MDT	Severe Thunderstorm Warning	BOU	Adams, Weld	39 min
Aug 27, 4:42 PM MDT	Severe Thunderstorm Warning	BOU	Weld	33 min
Aug 27, 5:10 PM MDT	Areal Flood Advisory	BOU	Weld	95 min
Aug 27, 5:14 PM MDT	Severe Thunderstorm Warning	BOU	Adams, Weld	61 min
Aug 27, 5:36 PM MDT	Severe Thunderstorm Warning	BOU	Morgan, Weld	54 min

Nearby

Tornado Warnings in Colorado, 2014 Every tornado warning in 2014 Tornadoes 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.