Alert archive / Colorado / Special Weather Statements in 2018

Special Weather Statement, NWS Goodland, KS

June 23, 2018Kit Carson County, Colorado

NWS Goodland, KS issued this special weather statement at Jun 23, 2018, 2:12 PM MDT for Kit Carson County, Colorado. It was in force for 33 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
Jun 23, 2018, 2:12 PM MDT (20:12 UTC)
Expired
Jun 23, 2018, 2:45 PM MDT
In force
33 min
Issued by
NWS Goodland, KS

County Kit Carson County, CO

The radar

The Goodland radar (KGLD), 65 km from the middle of the area, began a volume at 20:15 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.

The nearest sounding before it

Denver, CO (KDEN), launched 12:00Z, 8.2 hours before the alert went out and 78 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 2018-06-23Temperature 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°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Denver, CO at 12:00Z on 2018-06-23The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 74 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
2043 m above ground
0-6 km bulk shear
48 kt
0-1 km storm-relative helicity
74 m²/s²
0-3 km storm-relative helicity
190 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

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What forecasters said that day

The local office's own words before this special weather statement 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 special weather statement went out at Jun 23, 1:15 PM MDT, 57 minutes earlier.

Area forecast discussion, Jun 23, 1:15 PM MDT, 57 minutes before
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Hazardous weather outlook, Jun 23, 10:35 AM MDT, 3 hours 37 minutes before
Hazardous Weather Outlook
National Weather Service Goodland KS
1035 AM MDT Sat Jun 23 2018

COZ090>092-KSZ001>004-013>016-027>029-041-042-NEZ079>081-241200-
Yuma County-Kit Carson County-Cheyenne County-Cheyenne-Rawlins-
Decatur-Norton-Sherman-Thomas-Sheridan-Graham-Wallace-Logan-Gove-
Greeley-Wichita-Dundy-Hitchcock-Red Willow-
1035 AM MDT Sat Jun 23 2018 /1135 AM CDT Sat Jun 23 2018/

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

.DAY ONE...THIS AFTERNOON AND TONIGHT...

There will be a chance of thunderstorms over parts of far eastern
Colorado by mid afternoon slowly increasing in coverage while
approaching the Colorado Kansas border late this afternoon. The
storms are expected to slowly move east across the state line into
far western Kansas by early this evening with a southeast movement
out of the area around or shortly after midnight. The primary threats
will be outflow wind gusts to 65 mph and hail up to the size of golf
balls. Locally heavy rainfall is also possible.

Another chance for thunderstorms exists after midnight for parts of
the area. At this time widespread severe weather is not expected.

.DAYS TWO THROUGH SEVEN...SUNDAY THROUGH SATURDAY...

For Sunday morning, it will be possible for a few storms to be
severe. Locally heavy rainfall will also be possible with these
storms.

However the more widespread threat for severe thunderstorms looks to
be Sunday afternoon and evening. These storms will be capable of
large hail, damaging winds, and a few tornadoes. The area that will
have the greatest threat for severe weather will be roughly along
and east of a line from Tribune to Oakley to Norton. Locally
rainfall and possible flash flooding will be a threat over the entire
area.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not anticipated.

In the hours before

Special weather statement, Jun 23, 1:31 PM MDT, 41 minutes before
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Special weather statement, Jun 23, 1:49 PM MDT, 23 minutes before
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Special weather statement, Jun 23, 1:58 PM MDT, 14 minutes before
Special Weather Statement
National Weather Service Goodland KS
258 PM CDT SAT JUN 23 2018

KSZ002-014-232045-
Rawlins KS-Thomas KS-
258 PM CDT SAT JUN 23 2018

...SIGNIFICANT WEATHER ADVISORY FOR NORTHEASTERN THOMAS AND
SOUTHEASTERN RAWLINS COUNTIES UNTIL 345 PM CDT...

At 258 PM CDT, Doppler radar was tracking a strong thunderstorm 13
miles northwest of Gem, or 13 miles north of Colby, moving east at 15
mph.

Pea to dime size hail and wind gusts up to 50 mph will be possible
with this storm.

This storm will remain over mainly rural areas of northeastern Thomas
and southeastern Rawlins Counties.

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 3974 10079 3970 10074 3957 10074 3952 10076
      3949 10082 3947 10109 3952 10113 3958 10116
      3966 10115 3970 10108 3973 10098 3975 10087
TIME...MOT...LOC 1958Z 253DEG 14KT 3958 10104

Vincent
Special weather statement, Jun 23, 2:12 PM MDT, 0 minutes before
Special Weather Statement
National Weather Service Goodland KS
212 PM MDT SAT JUN 23 2018

COZ090-091-232045-
Kit Carson County CO-Yuma County CO-
212 PM MDT SAT JUN 23 2018

...SIGNIFICANT WEATHER ADVISORY FOR SOUTH CENTRAL YUMA AND NORTH
CENTRAL KIT CARSON COUNTIES UNTIL 245 PM MDT...

At 211 PM MDT, Doppler radar was tracking a strong thunderstorm 17
miles north of Bethune, or 17 miles west of Bonny Reservoir, moving
east at 10 mph.

Pea to dime size hail and wind gusts up to 50 mph will be possible
with this storm.

This storm will remain over mainly rural areas of south central Yuma
and north central Kit Carson Counties.

This includes Highway 385 between mile markers 202 and 213.

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 3946 10250 3950 10257 3957 10259 3962 10256
      3965 10251 3968 10240 3969 10229 3965 10221
      3957 10219 3950 10224 3947 10234
TIME...MOT...LOC 2011Z 262DEG 10KT 3955 10249

Vincent

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 23, 1:31 PM MDTSpecial Weather StatementGLDThomas44 min
Jun 23, 1:58 PM MDTSpecial Weather StatementGLDRawlins47 min
Jun 23, 2:16 PM MDTSpecial Weather StatementGLDSherman44 min
Jun 23, 2:20 PM MDTSpecial Weather StatementGLDThomas40 min
Jun 23, 2:34 PM MDTSevere Thunderstorm WarningGLDSheridan, Thomas41 min
Jun 23, 2:49 PM MDTSpecial Weather StatementGLDDecatur41 min
Jun 23, 3:10 PM MDTSevere Thunderstorm WarningGLDSheridan, Thomas50 min
Jun 23, 3:25 PM MDTSevere Thunderstorm WarningGLDSherman50 min
Jun 23, 3:42 PM MDTSevere Thunderstorm WarningGLDDecatur, Rawlins48 min
Jun 23, 3:58 PM MDTSevere Thunderstorm WarningGLDGove, Sheridan, Thomas47 min
Jun 23, 4:12 PM MDTSevere Thunderstorm WarningGLDSherman, Wallace48 min
Jun 23, 4:14 PM MDTSevere Thunderstorm WarningGLDSherman, Wallace46 min
Jun 23, 4:34 PM MDTSevere Thunderstorm WarningGLDRawlins26 min
Jun 23, 4:44 PM MDTSevere Thunderstorm WarningGLDGove, Graham, Sheridan, Thomas46 min
Jun 23, 4:59 PM MDTFlash Flood WarningGLDDecatur, Rawlins3 hr
Jun 23, 5:02 PM MDTSevere Thunderstorm WarningGLDLogan, Wallace28 min
Jun 23, 5:08 PM MDTFlash Flood WarningGLDSheridan, Thomas3 hr
Jun 23, 5:08 PM MDTSevere Thunderstorm WarningGLDWallace37 min
Jun 23, 5:34 PM MDTSevere Thunderstorm WarningGLDGove, Graham, Sheridan41 min
Jun 23, 5:44 PM MDTFlash Flood WarningGLDSheridan3 hr
Jun 23, 5:50 PM MDTSevere Thunderstorm WarningGLDGreeley, Logan, Wallace, Wichita40 min
Jun 23, 1:49 PM MDTSpecial Weather StatementGLDYuma41 min
Jun 23, 2:22 PM MDTSpecial Weather StatementGLDYuma53 min
Jun 23, 2:46 PM MDTSpecial Weather StatementGLDKit Carson44 min
Jun 23, 2:51 PM MDTSevere Thunderstorm WarningGLDKit Carson39 min
Jun 23, 3:29 PM MDTSevere Thunderstorm WarningGLDKit Carson46 min
Jun 23, 4:26 PM MDTSevere Thunderstorm WarningGLDCheyenne49 min
Jun 23, 5:16 PM MDTSevere Thunderstorm WarningGLDCheyenne29 min
Jun 23, 5:38 PM MDTSevere Thunderstorm WarningGLDCheyenne52 min
Jun 23, 5:41 PM MDTSevere Thunderstorm WarningGLDCheyenne49 min

Nearby

Special Weather Statements in Colorado, 2018Every special weather statement in 2018

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.