Alert archive / Colorado / Tornado Warnings in 2011

Tornado Warning 7, NWS Goodland, KS

May 11, 2011Yuma County, Colorado

NWS Goodland, KS issued this tornado warning at May 11, 2011, 5:28 PM MDT for Yuma County, Colorado. It was in force for 10 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: May 11, 2011, 5:28 PM MDT (23:28 UTC)
Expired: May 11, 2011, 5:38 PM MDT
In force: 10 min
Issued by: NWS Goodland, KS
Area: Storm-based polygon

County Yuma County, CO

The radar

The Goodland radar (KGLD), 97 km from the middle of the area, began a volume at 23:29 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
May 11, 3:52 PM MDT	Tornado Watch	SPC	6 hr

The nearest sounding before it

Denver, CO (KDNR), launched 12:00Z, 11.5 hours before the alert went out and 46 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: 629 m above ground
0-6 km bulk shear: 47 kt
0-1 km storm-relative helicity: 66 m²/s²
0-3 km storm-relative helicity: 583 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.

069 
WFUS53 KGLD 112328
TORGLD
COC125-120000-
/O.NEW.KGLD.TO.W.0007.110511T2328Z-110512T0000Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE GOODLAND KS
528 PM MDT WED MAY 11 2011

THE NATIONAL WEATHER SERVICE IN GOODLAND HAS ISSUED A

* TORNADO WARNING FOR...
  SOUTHWESTERN YUMA COUNTY IN NORTHEAST COLORADO...

* UNTIL 600 PM MDT

* AT 525 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THIS DANGEROUS
  STORM WAS LOCATED NEAR JOES...AND WAS MOVING NORTH AT 20 MPH.

* LOCATIONS IMPACTED INCLUDE...
  JOES.

THIS INCLUDES HIGHWAY 36 BETWEEN MILE MARKERS 181 AND 192.

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 3982 10281 3986 10267 3957 10253 3957 10281
TIME...MOT...LOC 2328Z 160DEG 16KT 3960 10268
HAIL 1.25IN
$$

LOCKHART

1 follow-up statement

844 
WWUS53 KGLD 112338
SVSGLD

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE GOODLAND KS
538 PM MDT WED MAY 11 2011

COC125-112348-
/O.CAN.KGLD.TO.W.0007.000000T0000Z-110512T0000Z/
YUMA CO-
538 PM MDT WED MAY 11 2011

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

THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED BELOW SEVERE
LIMITS...AND NO LONGER POSES AN IMMEDIATE THREAT TO LIFE OR
PROPERTY...HOWEVER HEAVY RAIN IS STILL POSSIBLE WITH THIS
THUNDERSTORM.

LAT...LON 3982 10281 3986 10267 3957 10253 3957 10281
TIME...MOT...LOC 2338Z 160DEG 16KT 3964 10270
$$

LOCKHART

The office that day

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

Issued	Product	Office	Counties	Lasted
May 10, 7:32 PM MDT	Special Weather Statement	GLD	Yuma	43 min
May 10, 7:33 PM MDT	Special Weather Statement	GLD	Yuma	42 min
May 11, 3:02 PM MDT	Tornado Warning	GLD	Kit Carson	31 min
May 11, 3:36 PM MDT	Tornado Warning	GLD	Kit Carson	39 min
May 11, 4:17 PM MDT	Tornado Warning	GLD	Kit Carson	43 min
May 11, 4:40 PM MDT	Special Weather Statement	GLD	Kit Carson	2 hr
May 11, 4:41 PM MDT	Tornado Warning	GLD	Kit Carson	37 min
May 11, 4:46 PM MDT	Severe Thunderstorm Warning	GLD	Kit Carson	59 min
May 11, 4:56 PM MDT	Severe Thunderstorm Warning	GLD	Yuma	18 min

Nearby

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