Alert archive / Nebraska / Special Weather Statements in 2017

Special Weather Statement, NWS Goodland, KS

August 16, 2017Rawlins County, Kansas; Hitchcock County, Red Willow County, Nebraska

NWS Goodland, KS issued this special weather statement at Aug 16, 2017, 12:39 AM CDT for Rawlins County, Kansas; Hitchcock County, Red Willow County, Nebraska. It was in force for 36 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: Aug 16, 2017, 12:39 AM CDT (05:39 UTC)
Expired: Aug 16, 2017, 1:15 AM CDT
In force: 36 min
Issued by: NWS Goodland, KS

Counties Rawlins County, KS, Hitchcock County, NE, Red Willow County, NE

The radar

The Goodland radar (KGLD), 115 km from the middle of the area, began a volume at 05:42 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, 5.7 hours before the alert went out and 126 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: 843 J/kg
Mixed-layer CIN: -15 J/kg
Mixed-layer LCL: 2134 m above ground
0-6 km bulk shear: 14 kt
0-1 km storm-relative helicity: 54 m²/s²
0-3 km storm-relative helicity: 92 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 Aug 15, 11:43 PM CDT, 56 minutes earlier.

Area forecast discussion, Aug 15, 11:43 PM CDT, 56 minutes before

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Hazardous weather outlook, Aug 15, 11:36 PM CDT, 1 hour 3 minutes before

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In the hours before

Special weather statement, Aug 15, 8:30 PM CDT, 4 hours 9 minutes before

Special Weather Statement
National Weather Service Goodland KS
730 PM MDT TUE AUG 15 2017

COZ091-160200-
Kit Carson County CO-
730 PM MDT TUE AUG 15 2017

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHWESTERN KIT CARSON COUNTY
UNTIL 800 PM MDT...

At 730 PM MDT, Doppler radar was tracking a strong thunderstorm 7
miles southwest of Hugo, or 18 miles southeast of Limon, moving
northeast at 15 mph.

Dime size hail and winds in excess of 30 mph will be possible with
this storm.

Locations impacted include...
Flagler and Seibert.

This includes Interstate 70 in Colorado between mile markers 391 and
406.

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 3913 10316 3917 10315 3932 10315 3941 10300
      3931 10286 3918 10283 3907 10316
TIME...MOT...LOC 0130Z 241DEG 13KT 3903 10352

JN

Special weather statement, Aug 15, 8:52 PM CDT, 3 hours 47 minutes before

Special Weather Statement
National Weather Service Goodland KS
752 PM MDT TUE AUG 15 2017

COZ090-091-160230-
Kit Carson County CO-Yuma County CO-
752 PM MDT TUE AUG 15 2017

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHWESTERN YUMA AND
NORTHWESTERN KIT CARSON COUNTIES UNTIL 830 PM MDT...

At 751 PM MDT, Doppler radar was tracking strong thunderstorms near
Flagler and Vona, moving northeast at 15 mph.

Dime size hail and winds in excess of 30 mph will be possible with
this storm.

Locations impacted include...
Stratton, Flagler, Seibert, Vona and Kirk.

This includes Interstate 70 in Colorado between mile markers 390 and
417.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Torrential rainfall is possible with these storms, and may lead to
localized flooding. Do not drive your vehicle through flooded
roadways.

&&

A severe thunderstorm watch remains in effect until 1100 PM MDT for
northeastern Colorado.

LAT...LON 3950 10315 3957 10297 3957 10280 3964 10280
      3965 10277 3958 10235 3932 10254 3911 10316
TIME...MOT...LOC 0151Z 241DEG 13KT 3931 10302

JN

Special weather statement, Aug 15, 9:21 PM CDT, 3 hours 18 minutes before

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Special weather statement, Aug 15, 9:40 PM CDT, 2 hours 59 minutes before

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Special weather statement, Aug 15, 9:52 PM CDT, 2 hours 47 minutes before

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Special weather statement, Aug 16, 12:39 AM 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
Aug 16, 12:44 AM CDT	Special Weather Statement	GLD	Logan	16 min
Aug 16, 1:02 AM CDT	Special Weather Statement	GLD	Logan	13 min
Aug 16, 2:20 AM CDT	Special Weather Statement	GLD	Graham, Norton	25 min
Aug 15, 8:30 PM CDT	Special Weather Statement	GLD	Kit Carson	30 min
Aug 15, 8:52 PM CDT	Special Weather Statement	GLD	Kit Carson	38 min
Aug 15, 9:14 PM CDT	Severe Thunderstorm Warning	GLD	Kit Carson	31 min
Aug 15, 9:21 PM CDT	Special Weather Statement	GLD	Phillips	24 min
Aug 15, 9:27 PM CDT	Flash Flood Warning	GLD	Kit Carson, Yuma	3 hr
Aug 15, 9:40 PM CDT	Special Weather Statement	GLD	Kit Carson	50 min
Aug 15, 9:52 PM CDT	Special Weather Statement	GLD	Phillips	38 min

Nearby

Special Weather Statements in Nebraska, 2017 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.