Alert archive / Colorado / Tornado Warnings in 2011

Tornado Warning 45, NWS Goodland, KS

July 2, 2011Yuma County, Colorado

NWS Goodland, KS issued this tornado warning at Jul 2, 2011, 6:20 PM MDT for Yuma County, Colorado. It was in force for 25 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
Jul 2, 2011, 6:20 PM MDT (00:20 UTC)
Expired
Jul 2, 2011, 6:45 PM MDT
In force
25 min
Issued by
NWS Goodland, KS
Area
Storm-based polygon

County Yuma County, CO

The radar

The Goodland radar (KGLD), 100 km from the middle of the area, began a volume at 00:19 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
Jul 2, 3:20 PM MDTSevere Thunderstorm WatchSPC9 hr

The nearest sounding before it

Denver, CO (KDNR), launched 00:00Z, 0.3 hours before the alert went out and 45 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 2011-07-03Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 920 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 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 2011-07-03The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -51 square meters per square second.193958Sfc1 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
920 J/kg
Mixed-layer CIN
-98 J/kg
Mixed-layer LCL
2294 m above ground
0-6 km bulk shear
34 kt
0-1 km storm-relative helicity
-51 m²/s²
0-3 km storm-relative helicity
-12 m²/s²
Significant tornado parameter
0.0
Supercell composite
-1.0

Open this sounding in Storm Lab

The text

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

857 
WFUS53 KGLD 030020
TORGLD
COC125-030045-
/O.NEW.KGLD.TO.W.0045.110703T0020Z-110703T0045Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE GOODLAND KS
620 PM MDT SAT JUL 2 2011

THE NATIONAL WEATHER SERVICE IN GOODLAND HAS ISSUED A

* TORNADO WARNING FOR...
  WEST CENTRAL YUMA COUNTY IN NORTHEAST COLORADO...

* UNTIL 645 PM MDT

* AT 615 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THIS DANGEROUS
  STORM WAS LOCATED 7 MILES WEST OF ABARR...AND WAS MOVING EAST AT 10
  MPH.

* LOCATIONS IMPACTED INCLUDE...
  ABARR.

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 3990 10260 3966 10269 3971 10281 3993 10281
TIME...MOT...LOC 0020Z 288DEG 8KT 3983 10283
HAIL 1.25IN
$$

FOLTZ
1 follow-up statement
012 
WWUS53 KGLD 030029
SVSGLD

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE GOODLAND KS
629 PM MDT SAT JUL 2 2011

COC125-030045-
/O.CON.KGLD.TO.W.0045.000000T0000Z-110703T0045Z/
YUMA CO-
629 PM MDT SAT JUL 2 2011

...A TORNADO WARNING REMAINS IN EFFECT FOR WEST CENTRAL YUMA COUNTY
UNTIL 645 PM MDT...

AT 628 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO.  THIS DANGEROUS
STORM WAS LOCATED NEAR ABARR...AND WAS MOVING SOUTHEAST AT 15 MPH.

LOCATIONS IMPACTED INCLUDE...
  ABARR.

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 3990 10260 3966 10269 3971 10281 3993 10281
TIME...MOT...LOC 0030Z 295DEG 12KT 3982 10279
HAIL 1.25IN
$$

FOLTZ

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 2, 6:04 PM MDTSevere Thunderstorm WarningGLDYuma36 min
Jul 2, 6:10 PM MDTSevere Thunderstorm WarningGLDYuma65 min
Jul 2, 6:13 PM MDTSevere Thunderstorm WarningGLDCheyenne32 min
Jul 2, 6:38 PM MDTSevere Thunderstorm WarningGLDYuma37 min
Jul 2, 6:43 PM MDTTornado WarningGLDYuma17 min
Jul 2, 7:03 PM MDTSevere Thunderstorm WarningGLDKit Carson, Yuma23 min
Jul 2, 7:09 PM MDTFlash Flood WarningGLDYuma4 hr
Jul 2, 7:31 PM MDTFlash Flood WarningGLDKit Carson3 hr
Jul 2, 10:05 PM MDTHigh Wind WarningGLDYuma98 min

Nearby

Tornado Warnings in Colorado, 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.