Alert archive / Kansas / Severe Thunderstorm Warnings in 2017

Severe Thunderstorm Warning 234, NWS Goodland, KS

July 18, 2017Cheyenne County, Kansas; Yuma County, Colorado

NWS Goodland, KS issued this severe thunderstorm warning at Jul 18, 2017, 8:21 PM CDT for Cheyenne County, Kansas; Yuma County, Colorado. It was in force for 39 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Jul 18, 2017, 8:21 PM CDT (01:21 UTC)
Expired
Jul 18, 2017, 9:00 PM CDT
In force
39 min
Issued by
NWS Goodland, KS
Area
Storm-based polygon
Hail
1.0 in
Wind
60.0 mph

Counties Yuma County, CO, Cheyenne County, KS

The radar

The Goodland radar (KGLD), 67 km from the middle of the area, began a volume at 01:24 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 nearest sounding before it

Denver, CO (KDEN), launched 00:00Z, 1.4 hours before the alert went out and 98 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 2017-07-19Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 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 00:00Z on 2017-07-19The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -53 square meters per square second.1939Sfc1 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
3055 m above ground
0-6 km bulk shear
7 kt
0-1 km storm-relative helicity
-53 m²/s²
0-3 km storm-relative helicity
41 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

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 18, 8:14 PM CDT, 7 minutes earlier.

Area forecast discussion, Jul 18, 8:14 PM CDT, 7 minutes before
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Hazardous weather outlook, Jul 18, 8:13 PM CDT, 8 minutes before
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In the hours before

Local storm report, Jul 18, 7:23 PM CDT, 58 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GOODLAND KS
623 PM MDT TUE JUL 18 2017

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0618 PM     HAIL             10 S HAIGLER            39.87N 101.94W
07/18/2017  E1.00 INCH       CHEYENNE           KS   PUBLIC

            PEA TO QUARTER SIZE HAIL.

&&

HILL
Local storm report, Jul 18, 7:49 PM CDT, 32 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GOODLAND KS
649 PM MDT TUE JUL 18 2017

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0635 PM     HAIL             10 NNE HAIGLER          40.14N 101.86W
07/18/2017  E1.75 INCH       DUNDY              NE   PUBLIC

            MOSTLY DIME SIZED BUT SOME GOLF BALL PIECES. TIME
            ESTIMATED FROM RADAR.

&&

RHUSTED
Local storm report, Jul 18, 8:00 PM CDT, 21 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GOODLAND KS
700 PM MDT TUE JUL 18 2017

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0650 PM     HAIL             7 ENE HALE              39.68N 102.01W
07/18/2017  E1.00 INCH       CHEYENNE           KS   PUBLIC

            ESTIMATED SIZE BY PEEKING OUT WINDOW. LOUD BOOMS ON ROOF
            SO HAIL MAY HAVE BEEN LARGER.

&&

RHUSTED
Special weather statement, Jul 18, 8:04 PM CDT, 17 minutes before
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Local storm report, Jul 18, 8:11 PM CDT, 10 minutes before
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Special weather statement, Jul 18, 8:14 PM CDT, 7 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
Jul 18, 7:24 PM CDTSevere Thunderstorm WarningGLDCheyenne, Sherman51 min
Jul 18, 7:09 PM CDTSpecial Weather StatementGLDYuma36 min
Jul 18, 7:27 PM CDTSevere Thunderstorm WarningGLDYuma48 min
Jul 18, 8:04 PM CDTSpecial Weather StatementGLDPhillips26 min
Jul 18, 8:14 PM CDTSpecial Weather StatementGLDKit Carson16 min
Jul 18, 8:32 PM CDTSpecial Weather StatementGLDKit Carson13 min
Jul 18, 8:57 PM CDTSpecial Weather StatementGLDYuma33 min
Jul 18, 10:03 PM CDTSpecial Weather StatementGLDYuma27 min
Jul 18, 8:02 PM CDTSevere Thunderstorm WarningGLDDundy43 min
Jul 18, 8:43 PM CDTSpecial Weather StatementGLDDundy32 min

Nearby

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