Alert archive / Colorado / Tornado Warnings in 2013

Tornado Warning 22, NWS Denver/Boulder, CO

June 17, 2013Morgan County, Colorado

NWS Denver/Boulder, CO issued this tornado warning at Jun 17, 2013, 5:26 PM MDT for Morgan 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 17, 2013, 5:26 PM MDT (23:26 UTC)
Expired: Jun 17, 2013, 6:00 PM MDT
In force: 34 min
Issued by: NWS Denver/Boulder, CO
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 1.0 in

County Morgan County, CO

The radar

The Denver radar (KFTG), 116 km from the middle of the area, began a volume at 23:28 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 watch it was issued in

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

Issued	Product	Office	Lasted
Jun 17, 2:21 PM MDT	Severe Thunderstorm Watch	SPC	9 hr

The nearest sounding before it

Denver, CO (KDNR), launched 12:00Z, 11.4 hours before the alert went out and 73 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 2430 m above ground
0-6 km bulk shear: 20 kt
0-1 km storm-relative helicity: -29 m²/s²
0-3 km storm-relative helicity: -12 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.

603 
WFUS55 KBOU 172326
TORBOU
COC087-180000-
/O.NEW.KBOU.TO.W.0022.130617T2326Z-130618T0000Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE DENVER CO
526 PM MDT MON JUN 17 2013

THE NATIONAL WEATHER SERVICE IN DENVER HAS ISSUED A

* TORNADO WARNING FOR...
  NORTHEASTERN MORGAN COUNTY IN NORTHEAST COLORADO...

* UNTIL 600 PM MDT

* AT 526 PM MDT...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A
  TORNADO WAS LOCATED 6 MILES SOUTHWEST OF WILLARD...OR 18 MILES
  NORTHEAST OF FORT MORGAN...MOVING SOUTHEAST AT 25 MPH.

  HAZARD...TORNADO AND QUARTER SIZE HAIL. 

  SOURCE...WEATHER SPOTTERS REPORTED FUNNEL CLOUD. 

  IMPACT...MOBILE HOMES WILL BE DAMAGED OR DESTROYED. DAMAGE TO 
           ROOFS...WINDOWS AND VEHICLES WILL OCCUR. FLYING DEBRIS 
           WILL BE DEADLY TO PEOPLE AND ANIMALS. TREE DAMAGE IS 
           LIKELY. 

* THIS TORNADIC THUNDERSTORM WILL REMAIN OVER MAINLY RURAL AREAS OF
  NORTHEASTERN MORGAN COUNTY.

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 4050 10346 4045 10346 4039 10363 4050 10367
      4053 10361 4052 10348
TIME...MOT...LOC 2326Z 322DEG 22KT 4048 10357 

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

$$

RPK

2 follow-up statements

477 
WWUS55 KBOU 172335
SVSBOU

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE DENVER CO
535 PM MDT MON JUN 17 2013

COC087-180000-
/O.CON.KBOU.TO.W.0022.000000T0000Z-130618T0000Z/
MORGAN CO-
535 PM MDT MON JUN 17 2013

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 600 PM MDT FOR
NORTHEASTERN MORGAN COUNTY...
    
AT 535 PM MDT...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO
WAS LOCATED 7 MILES SOUTHWEST OF WILLARD...OR 18 MILES NORTHEAST OF
FORT MORGAN...MOVING SOUTHEAST AT 15 MPH.

HAZARD...TORNADO AND QUARTER SIZE HAIL. 

SOURCE...RADAR INDICATED ROTATION. 

IMPACT...MOBILE HOMES WILL BE DAMAGED OR DESTROYED. DAMAGE TO 
         ROOFS...WINDOWS AND VEHICLES WILL OCCUR. FLYING DEBRIS WILL 
         BE DEADLY TO PEOPLE AND ANIMALS. TREE DAMAGE IS LIKELY. 

THIS TORNADIC THUNDERSTORM WILL REMAIN OVER MAINLY RURAL AREAS OF
NORTHEASTERN MORGAN COUNTY.

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 4050 10346 4045 10346 4039 10363 4050 10367
      4053 10361 4052 10348
TIME...MOT...LOC 2335Z 325DEG 12KT 4048 10357 

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

$$

RPK

715 
WWUS55 KBOU 172346
SVSBOU

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE DENVER CO
546 PM MDT MON JUN 17 2013

COC087-172356-
/O.CAN.KBOU.TO.W.0022.000000T0000Z-130618T0000Z/
MORGAN CO-
546 PM MDT MON JUN 17 2013

...THE TORNADO WARNING FOR NORTHEASTERN MORGAN COUNTY IS CANCELLED...
                
THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED BELOW SEVERE
LIMITS...AND NO LONGER APPEARS CAPABLE OF PRODUCING A TORNADO.
THEREFORE THE WARNING HAS BEEN CANCELLED.

LAT...LON 4050 10346 4045 10346 4039 10363 4050 10367
      4053 10361 4052 10348
TIME...MOT...LOC 2342Z 322DEG 22KT 4042 10351 

$$

RPK

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 16, 6:09 PM MDT	Special Weather Statement	BOU	Clear Creek, Gilpin	21 min
Jun 16, 6:55 PM MDT	Special Weather Statement	BOU	Jefferson	50 min
Jun 17, 11:43 AM MDT	Special Weather Statement	BOU	Douglas	32 min
Jun 17, 1:54 PM MDT	Special Weather Statement	BOU	Boulder	36 min
Jun 17, 2:00 PM MDT	Special Weather Statement	BOU	Washington	30 min
Jun 17, 2:25 PM MDT	Severe Thunderstorm Warning	BOU	Washington	50 min
Jun 17, 3:10 PM MDT	Severe Thunderstorm Warning	BOU	Lincoln	35 min
Jun 17, 3:31 PM MDT	Severe Thunderstorm Warning	BOU	Washington	29 min
Jun 17, 3:40 PM MDT	Severe Thunderstorm Warning	BOU	Weld	35 min
Jun 17, 3:59 PM MDT	Severe Thunderstorm Warning	BOU	Washington	31 min
Jun 17, 4:57 PM MDT	Severe Thunderstorm Warning	BOU	Logan, Morgan	33 min
Jun 17, 5:06 PM MDT	Tornado Warning	BOU	Logan, Morgan, Weld	24 min
Jun 17, 5:28 PM MDT	Severe Thunderstorm Warning	BOU	Morgan, Washington	32 min
Jun 17, 5:52 PM MDT	Tornado Warning	BOU	Morgan, Washington	38 min

Nearby

Tornado Warnings in Colorado, 2013 Every tornado warning in 2013 Tornadoes in 2013

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.