Alert archive / Nebraska / Special Weather Statements in 2017

Special Weather Statement, NWS North Platte, NE

May 16, 2017Logan County, Nebraska

NWS North Platte, NE issued this special weather statement at May 16, 2017, 9:12 PM CDT for Logan County, Nebraska. It was in force for 48 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: May 16, 2017, 9:12 PM CDT (02:12 UTC)
Expired: May 16, 2017, 10:00 PM CDT
In force: 48 min
Issued by: NWS North Platte, NE

County Logan County, NE

The radar

The North Platte radar (KLNX), 88 km from the middle of the area, began a volume at 02:15 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

N. Platte/Lee Bi, NE (KLBF), launched 00:00Z, 2.2 hours before the alert went out and 11 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: 256 J/kg
Mixed-layer CIN: -63 J/kg
Mixed-layer LCL: 2322 m above ground
0-6 km bulk shear: 60 kt
0-1 km storm-relative helicity: 30 m²/s²
0-3 km storm-relative helicity: 118 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.3

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.

In the hours before

Special weather statement, May 16, 7:37 PM CDT, 1 hour 35 minutes before

Special Weather Statement
National Weather Service North Platte NE
737 PM CDT TUE MAY 16 2017

NEZ059-070-071-170115-
Frontier NE-Hayes NE-Lincoln NE-
737 PM CDT TUE MAY 16 2017

...SIGNIFICANT WEATHER ADVISORY FOR WESTERN FRONTIER...SOUTHEASTERN
PERKINS...SOUTHWESTERN LINCOLN AND HAYES COUNTIES UNTIL 815 PM CDT...

At 737 PM CDT, Doppler radar was tracking strong thunderstorms along
a line extending from near Palisade to near Wallace. Movement was
east at 40 mph.

Half inch hail and wind gusts up to 50 mph will be possible with
these storms.

Locations impacted include...
Hayes Center, Wallace, Wellfleet, Dickens, Maywood, Quick, Marengo,
Bluegill Haven Campground, Willow View Campground, Hayes Center State
Wildlife Management Area, Red Willow Reservoir State Recreation Area
and Somerset.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

These storms may intensify, so be certain to monitor local radio
stations and available television stations for additional information
and possible warnings from the National Weather Service.

&&

A severe thunderstorm watch remains in effect until midnight CDT for
southwestern Nebraska.

LAT...LON 4075 10125 4079 10124 4094 10125 4098 10063
      4035 10053 4035 10122
TIME...MOT...LOC 0037Z 260DEG 33KT 4039 10107 4089 10116

Snively

Local storm report, May 16, 7:59 PM CDT, 1 hour 13 minutes before

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Local storm report, May 16, 8:05 PM CDT, 1 hour 7 minutes before

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Special weather statement, May 16, 8:18 PM CDT, 54 minutes before

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Local storm report, May 16, 8:58 PM CDT, 14 minutes before

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Special weather statement, May 16, 9:12 PM CDT, 0 minutes before

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The office that day

Everything else NWS North Platte, NE issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
May 16, 7:00 PM CDT	Severe Thunderstorm Warning	LBF	Perkins	60 min
May 16, 7:17 PM CDT	Special Weather Statement	LBF	McPherson	43 min
May 16, 7:31 PM CDT	Special Weather Statement	LBF	Arthur, Keith	44 min
May 16, 7:37 PM CDT	Special Weather Statement	LBF	Hayes	38 min
May 16, 7:45 PM CDT	Severe Thunderstorm Warning	LBF	Lincoln, Perkins	45 min
May 16, 8:18 PM CDT	Special Weather Statement	LBF	Frontier, Grant, Hooker, Lincoln, Logan, McPherson and 1 more	57 min
May 16, 8:53 PM CDT	Areal Flood Advisory	LBF	Lincoln	2 hr
May 16, 9:16 PM CDT	Special Weather Statement	LBF	Hooker, McPherson, Thomas	44 min

Nearby

Special Weather Statements in Nebraska, 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.