Alert archive / Colorado / Tornado Warnings in 2015

Tornado Warning 24, NWS Denver/Boulder, CO

June 4, 2015Elbert County, Colorado

NWS Denver/Boulder, CO issued this tornado warning at Jun 4, 2015, 5:58 PM MDT for Elbert County, Colorado. It was in force for 32 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 4, 2015, 5:58 PM MDT (23:58 UTC)
Expired: Jun 4, 2015, 6:30 PM MDT
In force: 32 min
Issued by: NWS Denver/Boulder, CO
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 1.25 in

County Elbert County, CO

The radar

The Pueblo radar (KPUX), 71 km from the middle of the area, began a volume at 00:03 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.

Issued	Product	Office	Lasted
Jun 4, 2:20 PM MDT	Tornado Watch	SPC	8 hr

The nearest sounding before it

Denver, CO (KDEN), launched 12:00Z, 12.0 hours before the alert went out and 111 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: 1510 J/kg
Mixed-layer CIN: -159 J/kg
Mixed-layer LCL: 900 m above ground
0-6 km bulk shear: 36 kt
0-1 km storm-relative helicity: 89 m²/s²
0-3 km storm-relative helicity: 31 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.9

Open this sounding in Storm Lab

The text

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

684 
WFUS55 KBOU 042358
TORBOU
COC039-050030-
/O.NEW.KBOU.TO.W.0024.150604T2358Z-150605T0030Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE DENVER CO
558 PM MDT THU JUN 4 2015

THE NATIONAL WEATHER SERVICE IN DENVER HAS ISSUED A

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

* UNTIL 630 PM MDT
    
* AT 557 PM MDT...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A
  TORNADO WAS LOCATED 4 MILES SOUTH OF SIMLA...OR 23 MILES SOUTHWEST
  OF LIMON...MOVING SOUTH AT 15 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...
  SIMLA.

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 3913 10405 3913 10415 3915 10395 3900 10393
      3899 10405
TIME...MOT...LOC 2357Z 341DEG 12KT 3907 10405 

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

$$

RPK

3 follow-up statements

907 
WWUS55 KBOU 050004
SVSBOU

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE DENVER CO
604 PM MDT THU JUN 4 2015

COC039-050030-
/O.CON.KBOU.TO.W.0024.000000T0000Z-150605T0030Z/
ELBERT CO-
604 PM MDT THU JUN 4 2015

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 630 PM MDT FOR SOUTH
CENTRAL ELBERT COUNTY...
        
AT 603 PM MDT...A CONFIRMED LARGE AND EXTREMELY DANGEROUS TORNADO WAS
LOCATED 6 MILES SOUTH OF SIMLA...OR 24 MILES SOUTHWEST OF LIMON...
MOVING SOUTH AT 15 MPH.

THIS IS A PARTICULARLY DANGEROUS SITUATION.

HAZARD...DAMAGING TORNADO. 

SOURCE...RADAR CONFIRMED TORNADO. 

IMPACT...YOU ARE IN A LIFE THREATENING SITUATION. FLYING DEBRIS MAY 
         BE DEADLY TO THOSE CAUGHT WITHOUT SHELTER. MOBILE HOMES 
         WILL BE DESTROYED. CONSIDERABLE DAMAGE TO 
         HOMES...BUSINESSES AND VEHICLES IS LIKELY AND COMPLETE 
         DESTRUCTION IS POSSIBLE. 

LOCATIONS IMPACTED INCLUDE...
SIMLA.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TO REPEAT...A LARGE...EXTREMELY DANGEROUS AND POTENTIALLY DEADLY
TORNADO IS ON THE GROUND. TO PROTECT YOUR LIFE...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 3913 10405 3913 10415 3915 10395 3900 10393
      3899 10405
TIME...MOT...LOC 0003Z 341DEG 12KT 3905 10404 

TORNADO...OBSERVED
TORNADO DAMAGE THREAT...CONSIDERABLE
HAIL...1.50IN

$$

RPK

864 
WWUS55 KBOU 050014
SVSBOU

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE DENVER CO
614 PM MDT THU JUN 4 2015

COC039-050030-
/O.CON.KBOU.TO.W.0024.000000T0000Z-150605T0030Z/
ELBERT CO-
614 PM MDT THU JUN 4 2015

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 630 PM MDT FOR SOUTH
CENTRAL ELBERT COUNTY...
        
AT 613 PM MDT...A CONFIRMED LARGE AND EXTREMELY DANGEROUS TORNADO WAS
LOCATED 9 MILES SOUTH OF SIMLA...OR 24 MILES SOUTHWEST OF LIMON...
MOVING SOUTH AT 15 MPH.

THIS IS A PARTICULARLY DANGEROUS SITUATION.

HAZARD...DAMAGING TORNADO. 

SOURCE...RADAR CONFIRMED TORNADO. 

IMPACT...YOU ARE IN A LIFE THREATENING SITUATION. FLYING DEBRIS MAY 
         BE DEADLY TO THOSE CAUGHT WITHOUT SHELTER. MOBILE HOMES 
         WILL BE DESTROYED. CONSIDERABLE DAMAGE TO 
         HOMES...BUSINESSES AND VEHICLES IS LIKELY AND COMPLETE 
         DESTRUCTION IS POSSIBLE. 

LOCATIONS IMPACTED INCLUDE...
SIMLA.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TO REPEAT...A LARGE...EXTREMELY DANGEROUS AND POTENTIALLY DEADLY
TORNADO IS ON THE GROUND. TO PROTECT YOUR LIFE...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.

HEAVY RAINFALL MAY HIDE THIS TORNADO. DO NOT WAIT TO SEE OR HEAR THE
TORNADO. TAKE COVER NOW.

&&

LAT...LON 3913 10405 3913 10415 3915 10395 3900 10393
      3899 10405
TIME...MOT...LOC 0013Z 341DEG 12KT 3902 10403 

TORNADO...OBSERVED
TORNADO DAMAGE THREAT...CONSIDERABLE
HAIL...1.50IN

$$

RPK

830 
WWUS55 KBOU 050034
SVSBOU

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE DENVER CO
634 PM MDT THU JUN 4 2015

COC039-050044-
/O.EXP.KBOU.TO.W.0024.000000T0000Z-150605T0030Z/
ELBERT CO-
634 PM MDT THU JUN 4 2015

...THE TORNADO WARNING FOR SOUTH CENTRAL ELBERT COUNTY HAS EXPIRED...
        
THE STORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE AREA.
THEREFORE THE WARNING HAS BEEN ALLOWED TO EXPIRE.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 1000 PM MDT FOR EAST CENTRAL
COLORADO.

REMEMBER...A TORNADO WARNING STILL REMAINS IN EFFECT FOR 
SOUTHEAST ELBERT COUNTY UNTIL 7 PM.

LAT...LON 3913 10405 3913 10415 3915 10395 3900 10393
      3899 10405
TIME...MOT...LOC 0032Z 341DEG 12KT 3902 10403 

$$

RPK

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 3, 6:02 PM MDT	Severe Thunderstorm Warning	BOU	Arapahoe, Douglas, Elbert	43 min
Jun 3, 6:29 PM MDT	Severe Thunderstorm Warning	BOU	Clear Creek, Jefferson	46 min
Jun 3, 6:41 PM MDT	Severe Thunderstorm Warning	BOU	Elbert	64 min
Jun 3, 7:16 PM MDT	Special Weather Statement	BOU	Denver	44 min
Jun 3, 7:18 PM MDT	Severe Thunderstorm Warning	BOU	Boulder, Larimer, Weld	15 min
Jun 3, 7:45 PM MDT	Severe Thunderstorm Warning	BOU	Adams, Arapahoe	45 min
Jun 3, 7:46 PM MDT	Special Weather Statement	BOU	Elbert	44 min
Jun 3, 7:58 PM MDT	Severe Thunderstorm Warning	BOU	Weld	32 min
Jun 3, 8:13 PM MDT	Severe Thunderstorm Warning	BOU	Larimer	32 min
Jun 3, 8:29 PM MDT	Severe Thunderstorm Warning	BOU	Adams, Arapahoe	61 min
Jun 3, 8:33 PM MDT	Areal Flood Advisory	BOU	Arapahoe	117 min
Jun 3, 9:15 PM MDT	Severe Thunderstorm Warning	BOU	Adams, Arapahoe	34 min
Jun 3, 10:43 PM MDT	Severe Thunderstorm Warning	BOU	Lincoln	47 min
Jun 3, 11:16 PM MDT	Special Weather Statement	BOU	Weld	44 min
Jun 3, 11:29 PM MDT	Severe Thunderstorm Warning	BOU	Lincoln	46 min
Jun 3, 11:48 PM MDT	Severe Thunderstorm Warning	BOU	Weld	27 min
Jun 4, 12:01 AM MDT	Severe Thunderstorm Warning	BOU	Weld	44 min
Jun 4, 2:24 PM MDT	Special Weather Statement	BOU	Elbert	51 min
Jun 4, 3:46 PM MDT	Severe Thunderstorm Warning	BOU	Elbert	29 min
Jun 4, 4:28 PM MDT	Severe Thunderstorm Warning	BOU	Adams, Denver	24 min
Jun 4, 4:47 PM MDT	Tornado Warning	BOU	Adams	13 min
Jun 4, 4:48 PM MDT	Severe Thunderstorm Warning	BOU	Elbert	27 min
Jun 4, 5:03 PM MDT	Severe Thunderstorm Warning	BOU	Adams	27 min
Jun 4, 5:05 PM MDT	Tornado Warning	BOU	Elbert	25 min
Jun 4, 5:16 PM MDT	Tornado Warning Tornado observed	BOU	Elbert	29 min
Jun 4, 5:49 PM MDT	Severe Thunderstorm Warning	BOU	Elbert	26 min
Jun 4, 5:54 PM MDT	Severe Thunderstorm Warning	BOU	Larimer, Weld	51 min

Nearby

Tornado Warnings in Colorado, 2015 Every tornado warning in 2015 Tornadoes in 2015

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.