Alert archive / Colorado / Severe Thunderstorm Warnings in 2017

Severe Thunderstorm Warning 13, NWS Goodland, KS

April 27, 2017Kit Carson County, Colorado

NWS Goodland, KS issued this severe thunderstorm warning at Apr 27, 2017, 4:40 PM MDT for Kit Carson County, Colorado. It was in force for 35 min. 1 report came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued
Apr 27, 2017, 4:40 PM MDT (22:40 UTC)
Expired
Apr 27, 2017, 5:15 PM MDT
In force
35 min
Issued by
NWS Goodland, KS
Area
Storm-based polygon
Hail
0.75 in
Wind
70.0 mph

County Kit Carson County, CO

The radar

The Goodland radar (KGLD), 55 km from the middle of the area, began a volume at 22:43 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 was reported inside it

TimeReportWhereRemark
Apr 27, 5:07 PM MDTTSTM WND GST 605 Ssw Burlington, CO

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Denver, CO (KDEN), launched 12:00Z, 10.7 hours before the alert went out and 99 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 2017-04-27Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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 2017-04-27The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 42 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1354 m above ground
0-6 km bulk shear
23 kt
0-1 km storm-relative helicity
42 m²/s²
0-3 km storm-relative helicity
76 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

059 
WUUS53 KGLD 272240
SVRGLD
COC063-272315-
/O.NEW.KGLD.SV.W.0013.170427T2240Z-170427T2315Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Goodland KS
440 PM MDT THU APR 27 2017

The National Weather Service in Goodland has issued a

* Severe Thunderstorm Warning for...
  Eastern Kit Carson County in east central Colorado...

* Until 515 PM MDT

* At 439 PM MDT, severe thunderstorms were located along a line
  extending from 8 miles northeast of Stratton to near Bethune,
  moving northeast at 50 mph.

  HAZARD...70 mph wind gusts and penny size hail. 

  SOURCE...Radar indicated. 

  IMPACT...Expect considerable tree damage. Damage is likely to 
           mobile homes, roofs, and outbuildings. 

* Locations impacted include...
  Burlington and Bethune. 

This includes the following highways...
 Interstate 70 in Colorado between mile markers 425 and 443.
 Highway 385 between mile markers 174 and 204, and near mile marker
211.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 3933 10216 3911 10222 3908 10254 3928 10252
      3946 10254 3955 10223
TIME...MOT...LOC 2239Z 240DEG 44KT 3941 10251 3931 10247 3910 10248 

HAIL...0.75IN
WIND...70MPH
 
$$

JN
1 follow-up statement
049 
WWUS53 KGLD 272259
SVSGLD

Severe Weather Statement
National Weather Service Goodland KS
459 PM MDT THU APR 27 2017

COC063-272315-
/O.CON.KGLD.SV.W.0013.000000T0000Z-170427T2315Z/
Kit Carson CO-
459 PM MDT THU APR 27 2017

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 515 PM MDT
FOR EASTERN KIT CARSON COUNTY...

At 459 PM MDT, severe thunderstorms were located along a line
extending from 8 miles southwest of Bonny Reservoir to 11 miles
northwest of Kanorado to 7 miles south of Burlington, moving
northeast at 50 mph.

HAZARD...70 mph wind gusts and penny size hail. 

SOURCE...Radar indicated. 

IMPACT...Expect considerable tree damage. Damage is likely to mobile 
         homes, roofs, and outbuildings. 

Locations impacted include...
Burlington and Bethune. 

This includes the following highways...
 Interstate 70 in Colorado between mile markers 429 and 443.
 Highway 385 between mile markers 174 and 204, and near mile marker
211.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 3933 10216 3911 10222 3910 10241 3928 10244
      3943 10245 3955 10223
TIME...MOT...LOC 2259Z 240DEG 44KT 3952 10227 3942 10223 3921 10225 

HAIL...0.75IN
WIND...70MPH
 
$$

JN

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 27, 2:15 PM MDTWinter Storm WatchGLDCheyenne, Kit Carson24 hr
Apr 27, 4:09 PM MDTSpecial Weather StatementGLDKit Carson51 min
Apr 27, 4:16 PM MDTSevere Thunderstorm WarningGLDKit Carson29 min
Apr 27, 4:18 PM MDTSevere Thunderstorm WarningGLDYuma11 min
Apr 27, 5:09 PM MDTSevere Thunderstorm WarningGLDKit Carson36 min
Apr 27, 5:26 PM MDTSevere Thunderstorm WarningGLDCheyenne, Kit Carson, Yuma34 min
Apr 27, 5:50 PM MDTSevere Thunderstorm WarningGLDCheyenne, Yuma22 min

Nearby

Severe Thunderstorm Warnings in Colorado, 2017Every severe thunderstorm warning in 2017

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.