Alert archive / Kansas / Severe Thunderstorm Warnings in 2017

Severe Thunderstorm Warning 207, NWS Goodland, KS

July 12, 2017Cheyenne County, Rawlins County, Thomas County, Kansas

NWS Goodland, KS issued this severe thunderstorm warning at Jul 12, 2017, 12:13 AM CDT for Cheyenne County, Rawlins County, Thomas County, Kansas. It was in force for 13 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 12, 2017, 12:13 AM CDT (05:13 UTC)
Expired: Jul 12, 2017, 12:26 AM CDT
In force: 13 min
Issued by: NWS Goodland, KS
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Cheyenne County, KS, Rawlins County, KS, Thomas County, KS

The radar

The Goodland radar (KGLD), 45 km from the middle of the area, began a volume at 05:15 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.

Did it verify

Not verified. The Iowa Environmental Mesonet's Cow found no qualifying storm report inside this severe thunderstorm warning while it was in force. That is not proof nothing happened: reports are thin where few people live.

Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.

The nearest sounding before it

Denver, CO (KDEN), launched 00:00Z, 5.2 hours before the alert went out and 167 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: 3802 m above ground
0-6 km bulk shear: 35 kt
0-1 km storm-relative helicity: 5 m²/s²
0-3 km storm-relative helicity: 47 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

630 
WUUS53 KGLD 120513
SVRGLD
KSC023-153-193-120545-
/O.NEW.KGLD.SV.W.0207.170712T0513Z-170712T0545Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Goodland KS
1213 AM CDT WED JUL 12 2017

The National Weather Service in Goodland has issued a

* Severe Thunderstorm Warning for...
  Southeastern Cheyenne County in northwestern Kansas...
  Northern Thomas County in northwestern Kansas...
  Southwestern Rawlins County in northwestern Kansas...

* Until 1245 AM CDT

* At 1213 AM CDT, a severe thunderstorm was located 9 miles south of
  McDonald, or 20 miles north of Brewster, moving north at 20 mph.

  HAZARD...60 mph wind gusts and quarter size hail. 

  SOURCE...Radar indicated. 

  IMPACT...Hail damage to vehicles is expected. Expect wind damage 
           to roofs, siding, and trees. 

* Locations impacted include...
  McDonald.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.

&&

LAT...LON 3953 10127 3961 10150 3982 10143 3970 10105
TIME...MOT...LOC 0513Z 189DEG 18KT 3965 10136 

HAIL...1.00IN
WIND...60MPH
 
$$

JN

2 follow-up statements

243 
WWUS53 KGLD 120521
SVSGLD

Severe Weather Statement
National Weather Service Goodland KS
1221 AM CDT WED JUL 12 2017

KSC193-120531-
/O.CAN.KGLD.SV.W.0207.000000T0000Z-170712T0545Z/
Thomas KS-
1221 AM CDT WED JUL 12 2017

...THE SEVERE THUNDERSTORM WARNING FOR NORTHERN THOMAS COUNTY IS
CANCELLED...
    
The severe thunderstorm which prompted the warning has weakened.
Therefore, the warning has been cancelled.

LAT...LON 3961 10126 3965 10146 3982 10143 3970 10105
TIME...MOT...LOC 0521Z 189DEG 18KT 3969 10135 

$$

KSC023-153-120545-
/O.CON.KGLD.SV.W.0207.000000T0000Z-170712T0545Z/
Cheyenne KS-Rawlins KS-
1221 AM CDT WED JUL 12 2017

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1245 AM CDT
FOR EAST CENTRAL CHEYENNE AND SOUTHWESTERN RAWLINS COUNTIES IN
NORTHWESTERN KANSAS...

At 1221 AM CDT, a severe thunderstorm was located 6 miles south of
McDonald, or 18 miles southwest of Atwood, moving north at 20 mph.

HAZARD...60 mph wind gusts and quarter size hail. 

SOURCE...Radar indicated. 

IMPACT...Hail damage to vehicles is expected. Expect wind damage to 
         roofs, siding, and trees. 

Locations impacted include...
McDonald.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.

&&

LAT...LON 3961 10126 3965 10146 3982 10143 3970 10105
TIME...MOT...LOC 0521Z 189DEG 18KT 3969 10135 

HAIL...1.00IN
WIND...60MPH
 
$$

JN

118 
WWUS53 KGLD 120526
SVSGLD

Severe Weather Statement
National Weather Service Goodland KS
1226 AM CDT WED JUL 12 2017

KSC023-153-120536-
/O.CAN.KGLD.SV.W.0207.000000T0000Z-170712T0545Z/
Cheyenne KS-Rawlins KS-
1226 AM CDT WED JUL 12 2017

...THE SEVERE THUNDERSTORM WARNING FOR EAST CENTRAL CHEYENNE AND
SOUTHWESTERN RAWLINS COUNTIES IN NORTHWESTERN KANSAS IS CANCELLED...
                
The storm which prompted the warning has weakened below severe
limits, and no longer poses an immediate threat to life or property.
Therefore the warning has been cancelled.  However heavy rain is
still possible with this thunderstorm.

LAT...LON 3961 10126 3965 10146 3982 10143 3970 10105
TIME...MOT...LOC 0525Z 189DEG 18KT 3972 10134 

$$

JN

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Goodland, KS wrote its last area forecast discussion before this severe thunderstorm warning went out at Jul 11, 11:55 PM CDT, 18 minutes earlier.

Area forecast discussion, Jul 11, 11:55 PM CDT, 18 minutes before

Area Forecast Discussion
National Weather Service Goodland KS
1055 PM MDT Tue Jul 11 2017

.UPDATE...
Issued at 906 PM MDT Tue Jul 11 2017

Update to forecast to increased pops for +rw/trw that is over SW
zones and slowly moving N and E. Have adjusted out past 06z to
acct for slow movement. Locally heavy rainfall is possible with a
quick inch or two not out of the question. Will adjust for next
estf based on further movement.

&&

.SHORT TERM...(This evening through Wednesday)
Issued at 232 PM MDT Tue Jul 11 2017

Forecast concerns are the hot temperatures through this afternoon
and evening and the potential for thunderstorms the next couple
of days.

Afternoon high temperatures across southwest Nebraska and northwest
Kansas in the 100-106 range with dewpoints in the upper 50s will
produce Heat Index values as high as 106 across portions of
southwest Nebraska and and northwest Kansas. Apparent
temperatures will drop below 100 again after 8PM CDT with low
temperatures recovering into the upper 60s and lower 70s by early
Wednesday morning.

A surface trough extends from southern Nebraska to southeast
Colorado this afternoon from the northeast to the southwest portion
of the forecast area.  With the CU field developing across eastern
Colorado this afternoon as the convective inhibition decreases and a
few storms already developing over the higher terrain along the
front range with weak impulses expected to move east out of the
Rockies in the westerly flow aloft, isolated to scattered
thunderstorms may move out of eastern Colorado this afternoon and
across northwest Kansas and southwest Nebraska this evening.

A nearly stationary boundary moving slowly into the region on
Wednesday provides a focus for moisture and convergence across the
forecast area.  The atmosphere becomes more unstable as afternoon
temperatures rise into the 90s to lower 100s and dewpoints rise into
the lower to mid 60s.  Scattered thunderstorms are expected across
the area as a result with some storms becoming severe with large
hail, damaging winds, and potentially heavy rains leading to flash
flooding late in the day on Wednesday.

.LONG TERM...(Wednesday night through Tuesday)
Issued at 232 PM MDT Tue Jul 11 2017

Wednesday night-Friday: Wet pattern setting up with front lingering
across the area through this period. While global models differ on
the upper level pattern evolution, both GFS and ECMWF show good
chance of PoPs continuing through Friday night. Forecasted QPF is a
bit conservative and may need to be adjusted upwards if the current
GFS solution is correct. PWATs will be around 1.50 in. for much of
this timeframe. Possible severe storms Wednesday evening, Thursday
afternoon, and Thursday evening. SREF soundings show the biggest
threat will be damaging winds, with Thursday evening appearing to
have the best chance of seeing severe. Daytime highs will be below
normal with nighttime lows near normal.

Saturday-Tuesday: Upper level ridging begins to build into the area
drying the area out some. May see a passing shower or storm each
afternoon. Temperatures trend upward through the period. GFS MOS
guidance is advertising highs over the century mark in eastern
portions of the CWA on Monday and Tuesday. Lows should run near
normal.

&&

.AVIATION...(For the 06Z TAFS through 06Z Thursday night)
Issued at 1055 PM MDT Tue Jul 11 2017

For KGLD...mainly VFR in terms of clouds w/ BKN090-200. Some MVFR
thru 08z though with 5sm in TRW. After 19z Wednesday...VCTS/VCSH.
Winds SW 15-25kts thru 08z...then WNW around 10kts thru 19z. From
19z onward...ENE 10-15kts.

For KMCK...mainly VFR in terms of clouds w/ BKN090-200. VCTS
possible before 09z Wed...and VCTS/VCSH aft 19z. Winds ENE around
10kts thru 09z...then WNW around 10kts thru 19z. From 19z
onward...ENE 10-15kts. There may be a tempo conditions for winds
06z-07z SW 10-20kts due to gust front from thunderstorm.

&&

.GLD WATCHES/WARNINGS/ADVISORIES...
KS...NONE.
CO...NONE.
NE...NONE.
&&

UPDATE...JN
SHORT TERM...LOCKHART
LONG TERM...SME
AVIATION...JN

Hazardous weather outlook, Jul 11, 7:49 PM CDT, 4 hours 24 minutes before

Hazardous Weather Outlook
National Weather Service Goodland KS
649 PM MDT Tue Jul 11 2017

COZ090>092-KSZ001>004-013>016-027>029-041-042-NEZ079>081-130100-
Yuma County-Kit Carson County-Cheyenne County-Cheyenne-Rawlins-
Decatur-Norton-Sherman-Thomas-Sheridan-Graham-Wallace-Logan-Gove-
Greeley-Wichita-Dundy-Hitchcock-Red Willow-
649 PM MDT Tue Jul 11 2017 /749 PM CDT Tue Jul 11 2017/

This hazardous weather outlook is for east central Colorado...
extreme southwest Nebraska and northwest Kansas.

.DAY ONE...TONIGHT...

Scattered to numerous thunderstorms will develop in northeast
Colorado and move into northwest Kansas and southwest Nebraska this
evening. There is a marginal risk for a severe storm capable of
producing damaging wind gusts and hail up to the size of quarters.
Locally heavy rainfall will also be possible, especially in northeast
Colorado.

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH TUESDAY...

Scattered to numerous thunderstorms will develop Wednesday afternoon
and evening. There is a marginal risk for severe thunderstorms
capable of producing large hail and damaging wind gusts. Heavy
rainfall capable of producing flash flooding will also be possible.

Thunderstorms will continue across the area through Thursday night.
Heavy rainfall and flash flooding will be the main hazard, but there
is also a marginal risk for a severe storm capable of producing
large hail and damaging wind gusts Thursday afternoon and early
evening.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will not be needed at this time.

In the hours before

Special weather statement, Jul 11, 8:44 PM CDT, 3 hours 29 minutes before

Special Weather Statement
National Weather Service Goodland KS
744 PM MDT TUE JUL 11 2017

COZ091-092-KSZ013-027-120230-
Kit Carson County CO-Cheyenne County CO-Wallace KS-Sherman KS-
744 PM MDT TUE JUL 11 2017

...SIGNIFICANT WEATHER ADVISORY FOR NORTHEASTERN CHEYENNE AND
SOUTHEASTERN KIT CARSON COUNTIES IN EAST CENTRAL COLORADO...
NORTHWESTERN WALLACE COUNTY IN WEST CENTRAL KANSAS AND SOUTHWESTERN
SHERMAN COUNTIES IN NORTHWESTERN KANSAS UNTIL 830 PM MDT...

At 744 PM MDT, thunderstorm outflow was located 17 miles northwest of
Cheyenne Wells, moving northeast at 25 mph.

Winds in excess of 40 mph will be possible.

Locations impacted include...
Stratton, Bethune and Arapahoe.

This includes the following highways...
 Interstate 70 in Colorado between mile markers 418 and 433.
 Highway 385 between mile markers 153 and 184.

LAT...LON 3877 10209 3897 10279 3936 10262 3917 10192
TIME...MOT...LOC 0144Z 210DEG 22KT 3905 10248

TL/JN

Special weather statement, Jul 11, 9:26 PM CDT, 2 hours 47 minutes before

Special Weather Statement
National Weather Service Goodland KS
826 PM MDT TUE JUL 11 2017

COZ090>092-KSZ013-027-120315-
Kit Carson County CO-Cheyenne County CO-Yuma County CO-Wallace KS-
Sherman KS-
826 PM MDT TUE JUL 11 2017

...SIGNIFICANT WEATHER ADVISORY FOR NORTHEASTERN CHEYENNE COUNTY IN
EAST CENTRAL COLORADO...SOUTH CENTRAL YUMA COUNTY IN NORTHEASTERN
COLORADO...EASTERN KIT CARSON COUNTY IN EAST CENTRAL COLORADO...
NORTHWESTERN WALLACE COUNTY IN WEST CENTRAL KANSAS AND WESTERN
SHERMAN COUNTIES IN NORTHWESTERN KANSAS UNTIL 915 PM MDT...

At 825 PM MDT, thunderstorm outflow was located 7 miles southeast of
Burlington, moving northeast at 30 mph.

Winds in excess of 40 mph will be possible.

Locations impacted include...
Goodland, Burlington, Stratton, Kanorado, Ruleton, Bonny Reservoir
and Bethune.

This includes the following highways...
 Interstate 70 in Kansas between mile markers 0 and 23.
 Interstate 70 in Colorado between mile markers 419 and 450.
 Highway 385 between mile markers 173 and 212.

LAT...LON 3967 10228 3931 10157 3881 10201 3896 10210
      3910 10229 3919 10251 3920 10271
TIME...MOT...LOC 0225Z 214DEG 25KT 3921 10221

TL/JN

Special weather statement, Jul 11, 9:35 PM CDT, 2 hours 38 minutes before

Special Weather Statement
National Weather Service Goodland KS
835 PM MDT TUE JUL 11 2017

COZ091-092-KSZ013-027-120315-
Kit Carson County CO-Cheyenne County CO-Wallace KS-Sherman KS-
835 PM MDT TUE JUL 11 2017

...SIGNIFICANT WEATHER ADVISORY FOR NORTHEASTERN CHEYENNE AND
SOUTHEASTERN KIT CARSON COUNTIES IN EAST CENTRAL COLORADO...
NORTHWESTERN WALLACE COUNTY IN WEST CENTRAL KANSAS AND SOUTHWESTERN
SHERMAN COUNTIES IN NORTHWESTERN KANSAS UNTIL 915 PM MDT...

At 834 PM MDT, Doppler radar was tracking a strong thunderstorm 10
miles northeast of Cheyenne Wells, moving northeast at 20 mph.

Dime size hail and winds in excess of 40 mph will be possible with
this storm.

Locations impacted include...
Arapahoe.

This includes Highway 385 near mile marker 159, and between mile
markers 166 and 167.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Torrential rainfall is also occurring with this storm, and may lead
to localized flooding. Do not drive your vehicle through flooded
roadways.

&&

LAT...LON 3881 10219 3894 10236 3922 10207 3896 10174
TIME...MOT...LOC 0234Z 222DEG 19KT 3894 10221

TL/JN

Special weather statement, Jul 11, 10:17 PM CDT, 1 hour 56 minutes before

Special Weather Statement
National Weather Service Goodland KS
917 PM MDT TUE JUL 11 2017

KSZ013-014-027-028-120400-
Wallace KS-Thomas KS-Logan KS-Sherman KS-
917 PM MDT TUE JUL 11 2017

...SIGNIFICANT WEATHER ADVISORY FOR NORTHEASTERN WALLACE...
SOUTHWESTERN THOMAS...NORTHWESTERN LOGAN AND SOUTHEASTERN SHERMAN
COUNTIES UNTIL 1000 PM MDT/1100 PM CDT/...

At 917 PM MDT/1017 PM CDT/, Doppler radar was tracking a strong
thunderstorm 12 miles north of Wallace, or 13 miles north of Sharon
Springs, moving northeast at 20 mph.

Dime size hail and winds in excess of 40 mph will be possible with
this storm.

Locations impacted include...
Sharon Springs and Edson.

This includes Interstate 70 in Kansas between mile markers 21 and 29.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Torrential rainfall is also occurring with this storm, and may lead
to localized flooding. Do not drive your vehicle through flooded
roadways.

&&

LAT...LON 3888 10175 3900 10192 3940 10162 3917 10125
TIME...MOT...LOC 0317Z 220DEG 16KT 3909 10167

TL/JN

Special weather statement, Jul 11, 11:12 PM CDT, 1 hour 1 minute before

Special Weather Statement
National Weather Service Goodland KS
1012 PM MDT TUE JUL 11 2017

KSZ001-002-013-014-120500-
Rawlins KS-Thomas KS-Sherman KS-Cheyenne KS-
1012 PM MDT TUE JUL 11 2017

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHEASTERN CHEYENNE...
NORTHWESTERN THOMAS...SOUTHWESTERN RAWLINS AND EASTERN SHERMAN
COUNTIES IN NORTHWESTERN KANSAS UNTIL 1100 PM MDT/MIDNIGHT CDT/...

At 1011 PM MDT/1111 PM CDT/, Doppler radar was tracking a strong
thunderstorm 4 miles southwest of Brewster, moving northeast at 20
mph.

Dime size hail and winds in excess of 40 mph will be possible with
this storm.

Locations impacted include...
Colby, Goodland, Brewster, Levant and Edson.

This includes Interstate 70 in Kansas between mile markers 19 and 51.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Torrential rainfall is also occurring with this storm, and may lead
to localized flooding. Do not drive your vehicle through flooded
roadways.

&&

LAT...LON 3939 10105 3913 10150 3914 10153 3942 10179
      3973 10151
TIME...MOT...LOC 0411Z 222DEG 17KT 3932 10144

TL/JN

Special weather statement, Jul 11, 11:54 PM CDT, 19 minutes before

Special Weather Statement
National Weather Service Goodland KS
1054 PM MDT TUE JUL 11 2017

KSZ001-002-013-014-120530-
Rawlins KS-Thomas KS-Sherman KS-Cheyenne KS-
1054 PM MDT TUE JUL 11 2017

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHEASTERN CHEYENNE...
NORTHWESTERN THOMAS...SOUTHWESTERN RAWLINS AND NORTHEASTERN SHERMAN
COUNTIES IN NORTHWESTERN KANSAS UNTIL 1130 PM MDT/1230 AM CDT/...

At 1053 PM MDT/1153 PM CDT/, Doppler radar was tracking a strong
thunderstorm 13 miles north of Brewster, moving north at 20 mph.

Dime size hail and winds in excess of 40 mph will be possible with
this storm.

Locations impacted include...
Brewster and Bird City.

This includes Interstate 70 in Kansas between mile markers 36 and 44.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Torrential rainfall is also occurring with this storm, and may lead
to localized flooding. Do not drive your vehicle through flooded
roadways.

&&

LAT...LON 3933 10124 3934 10149 3944 10168 3977 10160
      3965 10109
TIME...MOT...LOC 0453Z 200DEG 18KT 3956 10132

TL/JN

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 11, 9:26 PM CDT	Special Weather Statement	GLD	Sherman	49 min
Jul 11, 9:35 PM CDT	Special Weather Statement	GLD	Wallace	40 min
Jul 11, 10:17 PM CDT	Special Weather Statement	GLD	Wallace	43 min
Jul 11, 10:44 PM CDT	Severe Thunderstorm Warning	GLD	Sherman, Thomas, Wallace	31 min
Jul 11, 11:12 PM CDT	Special Weather Statement	GLD	Sherman	48 min
Jul 11, 11:54 PM CDT	Special Weather Statement	GLD	Thomas	36 min
Jul 12, 12:28 AM CDT	Special Weather Statement	GLD	Rawlins	62 min
Jul 12, 5:59 PM CDT	Special Weather Statement	GLD	Gove	31 min

Nearby

Severe Thunderstorm Warnings in Kansas, 2017 Every 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.