Alert archive / Kansas / Special Weather Statements in 2017

Special Weather Statement, NWS Goodland, KS

June 21, 2017Norton County, Kansas

NWS Goodland, KS issued this special weather statement at Jun 21, 2017, 9:32 PM CDT for Norton 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: Jun 21, 2017, 9:32 PM CDT (02:32 UTC)
Expired: Jun 21, 2017, 9:45 PM CDT
In force: 13 min
Issued by: NWS Goodland, KS

County Norton County, KS

The radar

The Grand Island radar (KUEX), 113 km from the middle of the area, began a volume at 02:32 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

N. Platte/Lee Bi, NE (KLBF), launched 00:00Z, 2.5 hours before the alert went out and 152 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: 386 J/kg
Mixed-layer CIN: -12 J/kg
Mixed-layer LCL: 3600 m above ground
0-6 km bulk shear: 14 kt
0-1 km storm-relative helicity: -10 m²/s²
0-3 km storm-relative helicity: 12 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 21, 8:13 PM CDT, 1 hour 19 minutes earlier.

Area forecast discussion, Jun 21, 8:13 PM CDT, 1 hour 19 minutes before

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Hazardous weather outlook, Jun 21, 11:47 AM CDT, 9 hours 45 minutes before

Hazardous Weather Outlook
National Weather Service Goodland KS
1047 AM MDT Wed Jun 21 2017

COZ090>092-KSZ001>004-013>016-027>029-041-042-NEZ079>081-221700-
Yuma County-Kit Carson County-Cheyenne County-Cheyenne-Rawlins-
Decatur-Norton-Sherman-Thomas-Sheridan-Graham-Wallace-Logan-Gove-
Greeley-Wichita-Dundy-Hitchcock-Red Willow-
1047 AM MDT Wed Jun 21 2017 /1147 AM CDT Wed Jun 21 2017/

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

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

Ambient air temperatures and Heat Index values of 100 to 104 degrees
will be common east of the Colorado border region across northwest
Kansas and southwest Nebraska this afternoon.

Strong to severe thunderstorms are expected mainly east of the
Colorado border area this afternoon through early evening with a
slight risk of severe storms east of a line from Tribune, Kansas to
McCook, Nebraska. Large hail, damaging wind gusts and locally heavy
rainfall are the main threats.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH WEDNESDAY...

There is a slight risk of severe thunderstorms across the Tri-State
region Thursday afternoon through Thursday night. Damaging winds and
large hail are the main threats. Locally heavy rainfall will also
increase the threat for flash flooding.

.SPOTTER INFORMATION STATEMENT...

Spotter activation may be required.

In the hours before

Special weather statement, Jun 21, 5:10 PM CDT, 4 hours 22 minutes before

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Special weather statement, Jun 21, 5:57 PM CDT, 3 hours 35 minutes before

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Special weather statement, Jun 21, 6:36 PM CDT, 2 hours 56 minutes before

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Local storm report, Jun 21, 6:45 PM CDT, 2 hours 47 minutes before

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Special weather statement, Jun 21, 9:09 PM CDT, 23 minutes before

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Special weather statement, Jun 21, 9:32 PM CDT, 0 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 21, 9:09 PM CDT	Special Weather Statement	GLD	Norton	21 min
Jun 22, 6:36 PM CDT	Special Weather Statement	GLD	Greeley	24 min
Jun 22, 3:29 PM CDT	Special Weather Statement	GLD	Cheyenne	16 min
Jun 22, 3:48 PM CDT	Special Weather Statement	GLD	Cheyenne	27 min
Jun 22, 4:41 PM CDT	Special Weather Statement	GLD	Cheyenne	19 min
Jun 22, 4:57 PM CDT	Special Weather Statement	GLD	Cheyenne	18 min
Jun 22, 5:02 PM CDT	Severe Thunderstorm Warning	GLD	Cheyenne	43 min
Jun 22, 5:25 PM CDT	Severe Thunderstorm Warning	GLD	Cheyenne	26 min
Jun 22, 5:56 PM CDT	Special Weather Statement	GLD	Cheyenne	19 min
Jun 22, 6:17 PM CDT	Special Weather Statement	GLD	Cheyenne	28 min

Nearby

Special Weather Statements in Kansas, 2017 Every special weather statement 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.