Alert archive / Colorado / Tornado Warnings in 2016

Tornado Warning 15, NWS Denver/Boulder, CO

June 20, 2016Park County, Colorado

NWS Denver/Boulder, CO issued this tornado warning at Jun 20, 2016, 6:54 PM MDT for Park County, Colorado. It was in force for 36 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 20, 2016, 6:54 PM MDT (00:54 UTC)
Expired
Jun 20, 2016, 7:30 PM MDT
In force
36 min
Issued by
NWS Denver/Boulder, CO
Area
Storm-based polygon
Tornado
Radar indicated
Hail
0.75 in

County Park County, CO

The radar

The Denver radar (KFTG), 122 km from the middle of the area, began a volume at 00:54 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 00:00Z, 0.9 hours before the alert went out and 223 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 00:00Z on 2016-06-21Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 152 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Denver, CO at 00:00Z on 2016-06-21The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 29 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
152 J/kg
Mixed-layer CIN
-456 J/kg
Mixed-layer LCL
1210 m above ground
0-6 km bulk shear
31 kt
0-1 km storm-relative helicity
29 m²/s²
0-3 km storm-relative helicity
161 m²/s²
Significant tornado parameter
0.0
Supercell composite
-0.0

Open this sounding in Storm Lab

The text

As transmitted.

640 
WFUS55 KBOU 210054
TORBOU
COC093-210130-
/O.NEW.KBOU.TO.W.0015.160621T0054Z-160621T0130Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE DENVER CO
654 PM MDT MON JUN 20 2016

THE NATIONAL WEATHER SERVICE IN DENVER HAS ISSUED A

* TORNADO WARNING FOR...
  EAST CENTRAL PARK COUNTY IN CENTRAL COLORADO...

* UNTIL 730 PM MDT
    
* AT 653 PM MDT...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A
  TORNADO WAS LOCATED 4 MILES WEST OF WILKERSON PASS...OR 44 MILES
  WEST OF COLORADO SPRINGS...MOVING SOUTH AT 5 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...
  WILKERSON PASS.

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 OUTDOORS...IN A
MOBILE HOME...OR IN A VEHICLE...MOVE TO THE CLOSEST SUBSTANTIAL
SHELTER AND PROTECT YOURSELF FROM FLYING DEBRIS.

&&

LAT...LON 3906 10569 3914 10557 3902 10544 3894 10560
TIME...MOT...LOC 0053Z 342DEG 6KT 3906 10560 

TORNADO...RADAR INDICATED
HAIL...<.75IN

$$

RTG
1 follow-up statement
511 
WWUS55 KBOU 210125
SVSBOU

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE DENVER CO
725 PM MDT MON JUN 20 2016

COC093-210133-
/O.EXP.KBOU.TO.W.0015.000000T0000Z-160621T0130Z/
PARK CO-
725 PM MDT MON JUN 20 2016

...THE TORNADO WARNING FOR EAST CENTRAL PARK COUNTY WILL EXPIRE AT
730 PM MDT...
        
THE STORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE AREA.
THEREFORE THE WARNING WILL BE ALLOWED TO EXPIRE.

REMEMBER...A TORNADO WARNING STILL REMAINS IN EFFECT FOR 
SOUTHEAST PARK COUNTY UNTIL 745PM.  

LAT...LON 3906 10569 3914 10557 3902 10544 3894 10560
TIME...MOT...LOC 0121Z 342DEG 6KT 3906 10560 

$$

RTG

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 20, 6:26 PM MDTSevere Thunderstorm WarningBOUPark34 min
Jun 20, 6:54 PM MDTAreal Flood AdvisoryBOUPark111 min
Jun 20, 7:04 PM MDTSevere Thunderstorm WarningBOUPark26 min
Jun 20, 7:17 PM MDTTornado WarningBOUPark28 min
Jun 20, 7:28 PM MDTSevere Thunderstorm WarningBOUPark32 min
Jun 20, 7:46 PM MDTSevere Thunderstorm WarningBOUPark8 min
Jun 20, 7:51 PM MDTSevere Thunderstorm WarningBOUPark24 min
Jun 20, 8:16 PM MDTSevere Thunderstorm WarningBOUPark44 min

Nearby

Tornado Warnings in Colorado, 2016Every tornado warning in 2016Tornadoes in 2016

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.