Alert archive / Colorado / Tornado Warnings in 2015

Tornado Warning 31, NWS Denver/Boulder, CO

June 5, 2015Elbert County, Colorado

NWS Denver/Boulder, CO issued this tornado warning at Jun 5, 2015, 2:26 AM MDT for Elbert County, Colorado. It was in force for 34 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 5, 2015, 2:26 AM MDT (08:26 UTC)
Expired
Jun 5, 2015, 3:00 AM MDT
In force
34 min
Issued by
NWS Denver/Boulder, CO
Area
Storm-based polygon
Tornado
Radar indicated
Hail
2.0 in

County Elbert County, CO

The radar

The Denver radar (KFTG), 81 km from the middle of the area, began a volume at 08:28 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, 8.4 hours before the alert went out and 95 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 2015-06-05Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 945 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 00:00Z on 2015-06-05The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -49 square meters per square second.1939Sfc1 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
945 J/kg
Mixed-layer CIN
-49 J/kg
Mixed-layer LCL
2145 m above ground
0-6 km bulk shear
21 kt
0-1 km storm-relative helicity
-49 m²/s²
0-3 km storm-relative helicity
26 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.

324 
WFUS55 KBOU 050826
TORBOU
COC039-050900-
/O.NEW.KBOU.TO.W.0031.150605T0826Z-150605T0900Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE DENVER CO
226 AM MDT FRI JUN 5 2015

THE NATIONAL WEATHER SERVICE IN DENVER HAS ISSUED A

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

* UNTIL 300 AM MDT
    
* AT 226 AM MDT...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A
  TORNADO WAS LOCATED 4 MILES NORTH OF MATHESON...OR 15 MILES WEST OF
  LIMON...MOVING EAST AT 25 MPH.

  HAZARD...TORNADO AND HAIL UP TO TWO INCHES IN DIAMETER. 

  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 AND MATHESON. 

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 10411 3936 10409 3936 10372 3913 10372
TIME...MOT...LOC 0826Z 276DEG 21KT 3923 10398 

TORNADO...RADAR INDICATED
HAIL...2.00IN

$$

RPK
2 follow-up statements
456 
WWUS55 KBOU 050837
SVSBOU

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE DENVER CO
237 AM MDT FRI JUN 5 2015

COC039-050900-
/O.CON.KBOU.TO.W.0031.000000T0000Z-150605T0900Z/
ELBERT CO-
237 AM MDT FRI JUN 5 2015

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 300 AM MDT FOR EAST
CENTRAL ELBERT COUNTY...
    
AT 237 AM MDT...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO
WAS LOCATED 5 MILES NORTHEAST OF MATHESON...OR 11 MILES WEST 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...
SIMLA AND MATHESON. 

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 3913 10411 3936 10409 3936 10372 3913 10372
TIME...MOT...LOC 0837Z 276DEG 21KT 3922 10390 

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

$$

RPK
006 
WWUS55 KBOU 050857
SVSBOU

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE DENVER CO
257 AM MDT FRI JUN 5 2015

COC039-050907-
/O.EXP.KBOU.TO.W.0031.000000T0000Z-150605T0900Z/
ELBERT CO-
257 AM MDT FRI JUN 5 2015

...THE TORNADO WARNING FOR EAST CENTRAL ELBERT COUNTY WILL EXPIRE AT
300 AM MDT...
                
THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED BELOW SEVERE
LIMITS...AND NO LONGER APPEARS CAPABLE OF PRODUCING A TORNADO.
THEREFORE THE WARNING WILL BE ALLOWED TO EXPIRE.  HOWEVER HEAVY RAIN
IS STILL POSSIBLE WITH THIS THUNDERSTORM.

LAT...LON 3913 10411 3936 10409 3936 10372 3913 10372
TIME...MOT...LOC 0854Z 276DEG 21KT 3922 10390 

$$

BARJENBRUCH

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 4, 6:11 PM MDTSevere Thunderstorm WarningBOUBoulder, Larimer, Weld34 min
Jun 4, 6:26 PM MDTTornado Warning Tornado observedBOUElbert34 min
Jun 4, 6:32 PM MDTSevere Thunderstorm WarningBOULarimer28 min
Jun 4, 6:37 PM MDTTornado Warning Tornado observedBOUBoulder23 min
Jun 4, 6:38 PM MDTTornado Warning Tornado observedBOUBoulder, Larimer, Weld22 min
Jun 4, 6:58 PM MDTTornado WarningBOUElbert, Lincoln32 min
Jun 4, 7:03 PM MDTTornado Warning Tornado observedBOUBoulder, Larimer27 min
Jun 4, 7:15 PM MDTFlash Flood Warning EmergencyBOUBoulder, Larimer, Weld3 hr
Jun 4, 7:30 PM MDTTornado WarningBOUElbert30 min
Jun 4, 7:54 PM MDTSevere Thunderstorm WarningBOUBoulder51 min
Jun 4, 8:40 PM MDTRiver Flood AdvisoryBOUBoulder6 hr
Jun 4, 8:49 PM MDTSevere Thunderstorm WarningBOUBoulder26 min
Jun 4, 9:13 PM MDTAreal Flood WarningBOUBoulder, Larimer, Weld12 hr
Jun 4, 9:17 PM MDTSevere Thunderstorm WarningBOUAdams, Boulder, Broomfield, Weld43 min
Jun 4, 9:19 PM MDTSevere Thunderstorm WarningBOUAdams, Arapahoe, Denver26 min
Jun 4, 9:42 PM MDTSevere Thunderstorm WarningBOUAdams, Broomfield, Denver, Jefferson33 min
Jun 4, 9:47 PM MDTAreal Flood AdvisoryBOUAdams, Denver, Jefferson3 hr
Jun 4, 9:58 PM MDTFlash Flood Warning EmergencyBOUBoulder, Larimer6 hr
Jun 4, 10:39 PM MDTSevere Thunderstorm WarningBOUAdams, Denver22 min
Jun 4, 11:00 PM MDTSevere Thunderstorm WarningBOUDenver, Jefferson30 min
Jun 4, 11:16 PM MDTAreal Flood AdvisoryBOUDenver, Jefferson3 hr
Jun 5, 12:42 AM MDTSevere Thunderstorm WarningBOUArapahoe, Denver, Jefferson33 min
Jun 5, 12:48 AM MDTAreal Flood AdvisoryBOUAdams, Denver, Jefferson117 min
Jun 5, 12:52 AM MDTSevere Thunderstorm WarningBOUElbert, Lincoln23 min
Jun 5, 1:09 AM MDTSevere Thunderstorm WarningBOUElbert36 min
Jun 5, 1:45 AM MDTSevere Thunderstorm WarningBOUAdams, Denver30 min
Jun 5, 2:02 AM MDTSevere Thunderstorm WarningBOUElbert28 min
Jun 5, 2:21 AM MDTAreal Flood AdvisoryBOUArapahoe, Elbert, Lincoln, Washington3 hr
Jun 5, 3:03 AM MDTFlash Flood WarningBOUElbert, Lincoln3 hr
Jun 5, 4:27 AM MDTFlash Flood WatchBOUAdams, Arapahoe, Boulder, Broomfield, Clear Creek, Denver and 13 more18 hr
Jun 5, 6:12 AM MDTRiver Flood WarningBOUAdams38 hr
Jun 5, 9:10 AM MDTRiver Flood WarningBOUMorgan11 days
Jun 5, 9:10 AM MDTRiver Flood WarningBOULogan, Morgan, Washington4 days
Jun 5, 12:52 PM MDTTornado WarningBOUArapahoe, Douglas23 min
Jun 5, 1:08 PM MDTTornado WarningBOUArapahoe, Douglas, Elbert37 min
Jun 5, 1:25 PM MDTAreal Flood AdvisoryBOUAdams, Arapahoe, Douglas3 hr
Jun 5, 1:48 PM MDTTornado WarningBOUAdams, Arapahoe42 min
Jun 5, 2:17 PM MDTTornado WarningBOUArapahoe, Douglas, Elbert43 min
Jun 5, 3:04 PM MDTTornado WarningBOUAdams, Arapahoe26 min
Jun 5, 3:27 PM MDTTornado WarningBOUAdams, Arapahoe33 min
Jun 5, 3:41 PM MDTSevere Thunderstorm WarningBOULincoln, Washington49 min
Jun 5, 4:03 PM MDTSevere Thunderstorm WarningBOUAdams, Morgan42 min
Jun 5, 4:21 PM MDTRiver Flood WarningBOUBoulder65 hr
Jun 5, 4:31 PM MDTSevere Thunderstorm WarningBOUAdams, Arapahoe29 min
Jun 5, 4:34 PM MDTSevere Thunderstorm WarningBOULincoln, Washington26 min
Jun 5, 4:36 PM MDTAreal Flood AdvisoryBOULincoln, Washington3 hr
Jun 5, 4:44 PM MDTTornado WarningBOUWashington31 min
Jun 5, 4:58 PM MDTTornado WarningBOUAdams, Washington32 min
Jun 5, 5:24 PM MDTSevere Thunderstorm WarningBOULogan, Morgan, Washington39 min

Nearby

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