Alert archive / Nebraska / Special Weather Statements in 2018

Special Weather Statement, NWS North Platte, NE

July 3, 2018Custer County, Nebraska

NWS North Platte, NE issued this special weather statement at Jul 3, 2018, 1:15 AM CDT for Custer County, Nebraska. It was in force for 45 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: Jul 3, 2018, 1:15 AM CDT (06:15 UTC)
Expired: Jul 3, 2018, 2:00 AM CDT
In force: 45 min
Issued by: NWS North Platte, NE

County Custer County, NE

The radar

The North Platte radar (KLNX), 63 km from the middle of the area, began a volume at 06:18 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, 6.3 hours before the alert went out and 69 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: 3199 J/kg
Mixed-layer CIN: -8 J/kg
Mixed-layer LCL: 1351 m above ground
0-6 km bulk shear: 27 kt
0-1 km storm-relative helicity: 118 m²/s²
0-3 km storm-relative helicity: 310 m²/s²
Significant tornado parameter: 2.5
Supercell composite: 24.3

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.

NWS North Platte, NE wrote its last area forecast discussion before this special weather statement went out at Jul 3, 12:58 AM CDT, 17 minutes earlier.

Area forecast discussion, Jul 3, 12:58 AM CDT, 17 minutes before

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Hazardous weather outlook, Jul 3, 12:03 AM CDT, 1 hour 12 minutes before

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In the hours before

Special weather statement, Jul 2, 11:07 PM CDT, 2 hours 8 minutes before

Special Weather Statement
National Weather Service North Platte NE
1107 PM CDT MON JUL 2 2018

NEZ036-037-059-030430-
McPherson NE-Lincoln NE-Logan NE-
1107 PM CDT MON JUL 2 2018

...SIGNIFICANT WEATHER ADVISORY FOR NORTH CENTRAL LINCOLN...WEST
CENTRAL LOGAN AND SOUTHEASTERN MCPHERSON COUNTIES UNTIL 1130 PM
CDT...

At 1107 PM CDT, Doppler radar was tracking a strong thunderstorm 9
miles south of Tryon, moving northeast at 30 mph.

Nickel size hail and winds in excess of 40 mph will be possible with
this storm.

Locations impacted include...
Ringgold.

This includes the following highways...
 Highway 92 between mile markers 206 and 222.
 Highway 97 between mile markers 14 and 26.

A Severe Thunderstorm Watch remains in effect until midnight CDT for
southwestern and west central Nebraska.

LAT...LON 4138 10098 4137 10099 4138 10099 4143 10106
      4161 10083 4148 10060 4134 10092
TIME...MOT...LOC 0407Z 225DEG 26KT 4141 10093

ET

Special weather statement, Jul 2, 11:33 PM CDT, 1 hour 42 minutes before

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Local storm report, Jul 2, 11:57 PM CDT, 1 hour 18 minutes before

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Special weather statement, Jul 3, 12:00 AM CDT, 1 hour 15 minutes before

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Special weather statement, Jul 3, 12:33 AM CDT, 42 minutes before

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Special weather statement, Jul 3, 1:15 AM 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
Jul 2, 7:05 PM CDT	Flash Flood Warning	LBF	Logan	3 hr
Jul 2, 7:08 PM CDT	Tornado Warning	LBF	Logan, McPherson	52 min
Jul 2, 7:29 PM CDT	Severe Thunderstorm Warning	LBF	Logan	35 min
Jul 2, 8:01 PM CDT	Severe Thunderstorm Warning	LBF	Logan	44 min
Jul 2, 8:11 PM CDT	Tornado Warning	LBF	Logan	24 min
Jul 2, 8:33 PM CDT	Special Weather Statement	LBF	Lincoln	42 min
Jul 2, 8:33 PM CDT	Tornado Warning	LBF	Logan	42 min
Jul 2, 9:11 PM CDT	Severe Thunderstorm Warning	LBF	Logan	49 min
Jul 2, 9:14 PM CDT	Special Weather Statement	LBF	Logan	46 min
Jul 2, 9:17 PM CDT	Areal Flood Advisory	LBF	Logan	6 hr
Jul 2, 9:39 PM CDT	Special Weather Statement	LBF	Keith	36 min
Jul 2, 9:57 PM CDT	Severe Thunderstorm Warning	LBF	Arthur, Keith	48 min
Jul 2, 10:02 PM CDT	Special Weather Statement	LBF	McPherson	43 min
Jul 2, 10:45 PM CDT	Special Weather Statement	LBF	Arthur	45 min
Jul 2, 11:07 PM CDT	Special Weather Statement	LBF	McPherson	23 min
Jul 2, 11:08 PM CDT	Severe Thunderstorm Warning	LBF	Arthur, Keith, McPherson	38 min
Jul 2, 11:33 PM CDT	Special Weather Statement	LBF	McPherson	27 min
Jul 3, 12:00 AM CDT	Special Weather Statement	LBF	Logan	30 min
Jul 3, 12:33 AM CDT	Special Weather Statement	LBF	Logan	42 min

Nearby

Special Weather Statements in Nebraska, 2018 Every 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.