Alert archive / Colorado / Tornado Warnings in 2011

Tornado Warning 25, NWS Goodland, KS

June 19, 2011Yuma County, Colorado; Dundy County, Nebraska

NWS Goodland, KS issued this tornado warning at Jun 19, 2011, 5:50 PM MDT for Yuma County, Colorado; Dundy County, Nebraska. It was in force for 39 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 19, 2011, 5:50 PM MDT (23:50 UTC)
Expired
Jun 19, 2011, 6:29 PM MDT
In force
39 min
Issued by
NWS Goodland, KS
Area
Storm-based polygon

Counties Yuma County, CO, Dundy County, NE

The radar

The Goodland radar (KGLD), 112 km from the middle of the area, began a volume at 23:53 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.

IssuedProductOfficeLasted
Jun 19, 2:04 PM MDTTornado WatchSPC7 hr
Jun 19, 5:10 PM MDTTornado WatchSPC7 hr

The nearest sounding before it

Denver, CO (KDNR), launched 12:00Z, 11.8 hours before the alert went out and 117 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 12:00Z on 2011-06-19Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 330 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 12:00Z on 2011-06-19The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 100 square meters per square second.19395878Sfc1 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
330 J/kg
Mixed-layer CIN
-236 J/kg
Mixed-layer LCL
1573 m above ground
0-6 km bulk shear
31 kt
0-1 km storm-relative helicity
100 m²/s²
0-3 km storm-relative helicity
108 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.3

Open this sounding in Storm Lab

The text

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

514 
WFUS53 KGLD 192350
TORGLD
COC125-NEC057-200045-
/O.NEW.KGLD.TO.W.0025.110619T2350Z-110620T0045Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE GOODLAND KS
550 PM MDT SUN JUN 19 2011

THE NATIONAL WEATHER SERVICE IN GOODLAND HAS ISSUED A

* TORNADO WARNING FOR...
  NORTHEASTERN YUMA COUNTY IN NORTHEAST COLORADO...
  NORTHWESTERN DUNDY COUNTY IN SOUTHWEST NEBRASKA...

* UNTIL 645 PM MDT

* AT 549 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THIS DANGEROUS
  STORM WAS LOCATED 6 MILES SOUTH OF ALVIN...AND WAS MOVING NORTHEAST
  AT 25 MPH.

* LOCATIONS IMPACTED INCLUDE...
  ALVIN.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW. MOVE TO 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 4044 10204 4035 10204 4035 10172 4013 10181
      4016 10223 4045 10213 4045 10205
TIME...MOT...LOC 2350Z 207DEG 23KT 4023 10206
HAIL 1.25IN
$$

024
2 follow-up statements
870 
WWUS53 KGLD 200006
SVSGLD

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE GOODLAND KS
606 PM MDT SUN JUN 19 2011

COC125-200016-
/O.CAN.KGLD.TO.W.0025.000000T0000Z-110620T0045Z/
YUMA CO-
606 PM MDT SUN JUN 19 2011

...THE TORNADO WARNING FOR NORTHEASTERN YUMA COUNTY IS CANCELLED...

THE STORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE WARNED 
AREA.

LAT...LON 4035 10172 4013 10181 4015 10205 4029 10205
      4035 10205
TIME...MOT...LOC 0006Z 236DEG 19KT 4024 10198
$$

NEC057-200045-
/O.CON.KGLD.TO.W.0025.000000T0000Z-110620T0045Z/
DUNDY NE-
606 PM MDT SUN JUN 19 2011

...A TORNADO WARNING REMAINS IN EFFECT FOR NORTHWESTERN DUNDY COUNTY
UNTIL 645 PM MDT...

AT 601 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO.  THIS DANGEROUS
STORM WAS LOCATED 7 MILES SOUTHEAST OF ALVIN...AND WAS MOVING
NORTHEAST AT 20 MPH.

LOCATIONS IMPACTED INCLUDE...
  MAINLY RURAL AREAS OF NORTHWESTERN DUNDY COUNTY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW. MOVE TO 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 4035 10172 4013 10181 4015 10205 4029 10205
      4035 10205
TIME...MOT...LOC 0006Z 236DEG 19KT 4024 10198
HAIL 1.25IN
$$

024
640 
WWUS53 KGLD 200029
SVSGLD

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE GOODLAND KS
629 PM MDT SUN JUN 19 2011

NEC057-200039-
/O.CAN.KGLD.TO.W.0025.000000T0000Z-110620T0045Z/
DUNDY NE-
629 PM MDT SUN JUN 19 2011

...THE TORNADO WARNING FOR NORTHWESTERN DUNDY COUNTY IS CANCELLED...

THE STORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE WARNED
AREA.

ADDITIONAL STRONG THUNDERSTORMS ARE STILL POSSIBLE...AND A TORNADO 
WATCH REMAINS IN EFFECT UNTIL 9 PM MDT.

LAT...LON 4035 10172 4013 10181 4015 10205 4029 10205
      4035 10205
TIME...MOT...LOC 0029Z 236DEG 19KT 4031 10185
$$

024

The office that day

Everything else NWS Goodland, KS issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jun 18, 6:57 PM MDTSpecial Weather StatementGLDCheyenne48 min
Jun 18, 7:40 PM MDTSpecial Weather StatementGLDCheyenne50 min
Jun 19, 5:19 PM MDTSevere Thunderstorm WarningGLDYuma56 min
Jun 19, 4:47 PM MDTSpecial Weather StatementGLDDundy, Hitchcock, Red Willow28 min
Jun 19, 4:59 PM MDTSevere Thunderstorm WarningGLDHitchcock45 min
Jun 19, 5:04 PM MDTSevere Thunderstorm WarningGLDDundy56 min
Jun 19, 5:24 PM MDTTornado WarningGLDDundy66 min
Jun 19, 5:39 PM MDTTornado WarningGLDDundy, Hitchcock66 min

Nearby

Tornado Warnings in Colorado, 2011Tornado Warnings in Nebraska, 2011Every tornado warning in 2011Tornadoes in 2011

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.