Alert archive / Colorado / Tornado Warnings in 2016

Tornado Warning 12, NWS Denver/Boulder, CO

May 24, 2016Washington County, Colorado

NWS Denver/Boulder, CO issued this tornado warning at May 24, 2016, 7:01 PM MDT for Washington County, Colorado. It was in force for 29 min. 1 report came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued: May 24, 2016, 7:01 PM MDT (01:01 UTC)
Expired: May 24, 2016, 7:30 PM MDT
In force: 29 min
Issued by: NWS Denver/Boulder, CO
Area: Storm-based polygon
Tornado: Observed
Hail: 1.75 in

County Washington County, CO

The radar

The Denver radar (KFTG), 139 km from the middle of the area, began a volume at 01:05 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.

What was reported inside it

Time	Report	Where	Remark
May 24, 7:18 PM MDT	HAIL 1.5	1 W Platner, CO

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
May 24, 12:45 PM MDT	Tornado Watch	SPC	7 hr

The nearest sounding before it

Denver, CO (KDEN), launched 00:00Z, 1.0 hours before the alert went out and 44 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: 484 J/kg
Mixed-layer CIN: -114 J/kg
Mixed-layer LCL: 1902 m above ground
0-6 km bulk shear: 57 kt
0-1 km storm-relative helicity: 98 m²/s²
0-3 km storm-relative helicity: 300 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 5.0

Open this sounding in Storm Lab

The text

As transmitted.

385 
WFUS55 KBOU 250101
TORBOU
COC121-250130-
/O.NEW.KBOU.TO.W.0012.160525T0101Z-160525T0130Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE DENVER CO
701 PM MDT TUE MAY 24 2016

THE NATIONAL WEATHER SERVICE IN DENVER HAS ISSUED A

* TORNADO WARNING FOR...
  NORTHEASTERN WASHINGTON COUNTY IN NORTHEASTERN COLORADO...

* UNTIL 730 PM MDT

* AT 657 PM MDT...A THUNDERSTORM THAT HAS PRODUCED BRIEF FUNNEL
  CLOUDS AND TORNADOES WAS LOCATED NEAR PLATNER...OR 6 MILES
  NORTHEAST OF AKRON...MOVING NORTHEAST AT 35 MPH.

  HAZARD...DAMAGING TORNADO AND GOLF BALL SIZE HAIL. 

  SOURCE...EMERGENCY MANAGEMENT HAS REPORTED BRIEF TORNADOES TO THE
           NORTHEAST AND SOUTHEAST OF AKRON. SPOTTERS HAVE ALSO
           REPORTED GOLF BALL SIZE HAIL WITH THE THUNDERSTORM.  

  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...
  OTIS...LONE STAR...BURDETT AND PLATNER. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

BRIEF TORNADOES HAVE BEEN PRODUCED BY THIS THUNDERSTORM. 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.

THIS TORNADO WARNING REPLACES THE TORNADO WARNING THAT WAS IN EFFECT
UNTIL 700 PM MDT.
 
&&

LAT...LON 4010 10314 4023 10321 4028 10320 4042 10285
      4030 10279 4016 10279
TIME...MOT...LOC 0057Z 241DEG 31KT 4020 10310 

TORNADO...OBSERVED
HAIL...1.75IN

$$

DANKERS

2 follow-up statements

838 
WWUS55 KBOU 250121
SVSBOU

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE DENVER CO
721 PM MDT TUE MAY 24 2016

COC121-250130-
/O.CON.KBOU.TO.W.0012.000000T0000Z-160525T0130Z/
WASHINGTON CO-
721 PM MDT TUE MAY 24 2016

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 730 PM MDT FOR
NORTHEASTERN WASHINGTON COUNTY...
    
AT 720 PM MDT...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO
WAS LOCATED 4 MILES SOUTH OF LONE STAR...OR 14 MILES NORTHWEST OF
YUMA...MOVING NORTHEAST AT 35 MPH. THE STORM IS BEGINNING TO MOVE
INTO YUMA COUNTY. 

HAZARD...TORNADO AND GOLF BALL SIZE HAIL. 

SOURCE...RADAR INDICATED ROTATION. AT 715 PM MDT...SPOTTERS NEAR
         PLATNER REPORTED ONE AND A HALF INCH DIAMETER HAIL. 

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...
OTIS...LONE STAR...BURDETT AND PLATNER. 

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 4010 10314 4023 10321 4028 10320 4042 10285
      4030 10279 4016 10279
TIME...MOT...LOC 0120Z 241DEG 31KT 4030 10287 

TORNADO...RADAR INDICATED
HAIL...1.75IN

$$

DANKERS

354 
WWUS55 KBOU 250128
SVSBOU

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE DENVER CO
728 PM MDT TUE MAY 24 2016

COC121-250138-
/O.EXP.KBOU.TO.W.0012.000000T0000Z-160525T0130Z/
WASHINGTON CO-
728 PM MDT TUE MAY 24 2016

...THE TORNADO WARNING FOR NORTHEASTERN WASHINGTON 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.  HOWEVER...SMALL
HAIL AND GUSTY WINDS ARE STILL POSSIBLE WITH THIS THUNDERSTORM.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 800 PM MDT FOR NORTHEASTERN
COLORADO.

LAT...LON 4010 10314 4023 10321 4028 10320 4042 10285
      4030 10279 4016 10279
TIME...MOT...LOC 0126Z 241DEG 31KT 4030 10287 

$$

DANKERS

The office that day

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

Issued	Product	Office	Counties	Lasted
May 24, 6:05 PM MDT	Tornado Warning	BOU	Morgan, Washington	25 min
May 24, 6:26 PM MDT	Tornado Warning	BOU	Washington	34 min
May 25, 3:58 PM MDT	Severe Thunderstorm Warning	BOU	Washington	18 min

Nearby

Tornado Warnings in Colorado, 2016 Every tornado warning in 2016 Tornadoes 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.