Alert archive / Kansas / Tornado Watches in 2015

Tornado Watch 260

June 5, 20155 counties in Colorado; 20 counties in Kansas; 7 counties in Nebraska

The Storm Prediction Center issued this tornado watch at Jun 5, 2015, 4:44 PM MDT for 5 counties in Colorado; 20 counties in Kansas; 7 counties in Nebraska. It was in force for 7 hr.

The area

The outline as issued.

The facts

Issued
Jun 5, 2015, 4:44 PM MDT (22:44 UTC)
Expired
Jun 5, 2015, 11:50 PM MDT
In force
7 hr
Issued by
the Storm Prediction Center
Largest hail expected
3 in
Strongest gust expected
65 kt
All 32 counties

Cheyenne County, CO, Kit Carson County, CO, Phillips County, CO, Sedgwick County, CO, Yuma County, CO, Cheyenne County, KS, Decatur County, KS, Finney County, KS, Gove County, KS, Grant County, KS, Greeley County, KS, Hamilton County, KS, Kearny County, KS, Lane County, KS, Logan County, KS, Morton County, KS, Rawlins County, KS, Scott County, KS, Sheridan County, KS, Sherman County, KS, Stanton County, KS, Stevens County, KS, Thomas County, KS, Wallace County, KS, Wichita County, KS, Chase County, NE, Dundy County, NE, Frontier County, NE, Hayes County, NE, Hitchcock County, NE, Perkins County, NE, Red Willow County, NE

The radar

The Goodland radar (KGLD), 60 km from the middle of the area, began a volume at 22:46 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 SPC expected

The probabilities SPC published with the watch, for the watch area over its life.

Two or more tornadoes
30%
One or more EF2 to EF5 tornadoes
10%
Ten or more severe wind reports
50%
One or more gusts of 65 knots or more
30%
Ten or more severe hail reports
40%
One or more hailstones of 2 inches or more
30%
Six or more combined severe hail and wind reports
90%

Warnings issued inside it

36 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.

IssuedProductOfficeCountiesLasted
Jun 5, 4:44 PM MDTTornado WarningGLDKit Carson46 min
Jun 5, 4:49 PM MDTSevere Thunderstorm WarningGLDKit Carson26 min
Jun 5, 5:15 PM MDTTornado WarningGLDKit Carson45 min
Jun 5, 5:19 PM MDTTornado WarningGLDKit Carson, Yuma26 min
Jun 5, 5:45 PM MDTTornado Warning Tornado observedConsiderable damage threatGLDKit Carson, Yuma30 min
Jun 5, 5:56 PM MDTSevere Thunderstorm WarningGLDCheyenne, Kit Carson49 min
Jun 5, 6:14 PM MDTTornado WarningGLDKit Carson, Yuma15 min
Jun 5, 6:14 PM MDTSevere Thunderstorm WarningGLDSheridan, Thomas61 min
Jun 5, 6:18 PM MDTSevere Thunderstorm WarningGLDCheyenne, Kit Carson31 min
Jun 5, 6:18 PM MDTTornado WarningGLDKit Carson, Yuma27 min
Jun 5, 6:24 PM MDTFlash Flood WarningGLDKit Carson, Yuma3 hr
Jun 5, 6:28 PM MDTSevere Thunderstorm WarningGLDThomas47 min
Jun 5, 6:38 PM MDTTornado WarningGLDKit Carson52 min
Jun 5, 6:39 PM MDTTornado WarningGLDKit Carson51 min
Jun 5, 6:40 PM MDTTornado WarningGLDSheridan35 min
Jun 5, 6:43 PM MDTTornado WarningGLDYuma32 min
Jun 5, 6:54 PM MDTTornado WarningGLDThomas36 min
Jun 5, 7:09 PM MDTTornado WarningGLDYuma51 min
Jun 5, 7:13 PM MDTSevere Thunderstorm WarningGLDCheyenne, Sherman62 min
Jun 5, 7:15 PM MDTTornado WarningGLDThomas18 min
Jun 5, 7:16 PM MDTSevere Thunderstorm WarningGLDRawlins, Thomas29 min
Jun 5, 7:21 PM MDTFlash Flood WarningGLDKit Carson, Yuma3 hr
Jun 5, 7:22 PM MDTTornado Warning Tornado observedGLDRawlins23 min
Jun 5, 7:38 PM MDTTornado WarningGLDYuma52 min
Jun 5, 7:43 PM MDTSevere Thunderstorm WarningGLDLogan, Sherman, Thomas48 min
Jun 5, 7:50 PM MDTSevere Thunderstorm WarningLBFPerkins55 min
Jun 5, 7:55 PM MDTTornado WarningGLDLogan, Thomas35 min
Jun 5, 7:58 PM MDTSevere Thunderstorm WarningGLDCheyenne62 min
Jun 5, 8:02 PM MDTSevere Thunderstorm WarningGLDLogan, Thomas43 min
Jun 5, 8:27 PM MDTTornado Warning Tornado observedGLDLogan33 min
Jun 5, 8:29 PM MDTFlash Flood WarningGLDYuma4 hr
Jun 5, 8:45 PM MDTTornado Warning Tornado observedGLDLogan, Thomas45 min
Jun 5, 8:52 PM MDTFlash Flood WarningGLDCheyenne, Rawlins4 hr
Jun 5, 8:58 PM MDTSevere Thunderstorm WarningGLDCheyenne, Rawlins62 min
Jun 5, 9:08 PM MDTTornado Warning Tornado observedConsiderable damage threatGLDThomas22 min
Jun 5, 9:27 PM MDTTornado WarningGLDThomas33 min

Discussions around it

SPC mesoscale discussions over the same counties from four hours before the watch to its end.

The nearest sounding before it

Denver, CO (KDEN), launched 12:00Z, 10.7 hours before the alert went out and 173 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 2015-06-05Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 356 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Denver, CO at 12:00Z on 2015-06-05The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -12 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
356 J/kg
Mixed-layer CIN
-70 J/kg
Mixed-layer LCL
888 m above ground
0-6 km bulk shear
22 kt
0-1 km storm-relative helicity
-12 m²/s²
0-3 km storm-relative helicity
68 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.

575 
WWUS20 KWNS 052242
SEL0  
SPC WW 052242
COZ000-KSZ000-NEZ000-060600-

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 260
NWS STORM PREDICTION CENTER NORMAN OK
445 PM MDT FRI JUN 5 2015

THE NWS STORM PREDICTION CENTER HAS ISSUED A

* TORNADO WATCH FOR PORTIONS OF 
  EASTERN COLORADO
  WESTERN KANSAS
  SOUTHWESTERN NEBRASKA

* EFFECTIVE THIS FRIDAY AFTERNOON FROM 445 PM UNTIL MIDNIGHT MDT.

* PRIMARY THREATS INCLUDE...
  A COUPLE TORNADOES POSSIBLE
  SCATTERED DAMAGING WINDS AND ISOLATED SIGNIFICANT GUSTS TO 75
    MPH POSSIBLE
  SCATTERED LARGE HAIL AND ISOLATED VERY LARGE HAIL EVENTS TO 3
    INCHES IN DIAMETER POSSIBLE

SUMMARY...SEVERE THUNDERSTORMS ARE FORECAST TO SHIFT NORTHEASTWARD
AND EASTWARD ACROSS THIS REGION THROUGH THE EVENING...OFFERING
DAMAGING HAIL AND SPORADIC SEVERE GUSTS INITIALLY.  A TORNADO RISK
EXISTS WITH ANY SUSTAINED SUPERCELLS.  WITH TIME...MORE ORGANIZED
DAMAGING-WIND POTENTIAL MAY DEVELOP AS STORMS CLUSTER TOGETHER.

THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 70 STATUTE
MILES EAST AND WEST OF A LINE FROM 50 MILES WEST SOUTHWEST OF
GARDEN CITY KANSAS TO 15 MILES EAST NORTHEAST OF IMPERIAL
NEBRASKA.  FOR A COMPLETE DEPICTION OF THE WATCH SEE THE
ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU0).

PRECAUTIONARY/PREPAREDNESS ACTIONS...

REMEMBER...A TORNADO WATCH MEANS CONDITIONS ARE FAVORABLE FOR
TORNADOES AND SEVERE THUNDERSTORMS IN AND CLOSE TO THE WATCH
AREA. PERSONS IN THESE AREAS SHOULD BE ON THE LOOKOUT FOR
THREATENING WEATHER CONDITIONS AND LISTEN FOR LATER STATEMENTS
AND POSSIBLE WARNINGS.

&&

OTHER WATCH INFORMATION...CONTINUE...WW 258...WW 259...

AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 3 INCHES. EXTREME TURBULENCE AND SURFACE
WIND GUSTS TO 65 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO
550. MEAN STORM MOTION VECTOR 24035.


...EDWARDS

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jun 4, 6:06 PM MDTTornado WatchSPCKit Carson, Yuma5 hr
Jun 4, 7:20 PM MDTMesoscale DiscussionSPCBent, Crowley, El Paso, Otero, Prowers, Pueblo2 hr
Jun 4, 8:20 PM MDTMesoscale DiscussionSPCAdams, Arapahoe, Broomfield, Denver, Douglas, Elbert and 2 more115 min
Jun 5, 12:49 PM MDTMesoscale DiscussionSPCAdams, Arapahoe, Bent, Broomfield, Crowley, Denver and 14 more86 min
Jun 5, 1:09 PM MDTTornado WatchSPCAdams, Arapahoe, Baca, Bent, Boulder, Broomfield and 18 more6 hr
Jun 5, 4:22 PM MDTMesoscale DiscussionSPCCheyenne, Kit Carson, Phillips, Yuma53 min
Jun 5, 5:59 PM MDTMesoscale DiscussionSPCKit Carson61 min
Jun 4, 7:10 PM MDTMesoscale DiscussionSPCAllen, Anderson, Chase, Clay, Cloud, Coffey and 13 more65 min
Jun 4, 10:29 PM MDTMesoscale DiscussionSPCDecatur, Ellis, Gove, Graham, Norton, Osborne and 5 more61 min
Jun 5, 12:22 AM MDTMesoscale DiscussionSPCAllen, Anderson, Bourbon, Butler, Chase, Chautauqua and 31 more113 min
Jun 5, 12:42 AM MDTSevere Thunderstorm WatchSPCAllen, Anderson, Bourbon, Butler, Chase, Chautauqua and 18 more3 hr

Nearby

Tornado Watches in Kansas, 2015Tornado Watches in Nebraska, 2015Tornado Watches in Colorado, 2015Every tornado watch in 2015

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.