Alert archive / Nebraska / Special Weather Statements in 2018

Special Weather Statement, NWS North Platte, NE

August 31, 2018Frontier County, Hayes County, Nebraska

NWS North Platte, NE issued this special weather statement at Aug 31, 2018, 7:13 AM CDT for Frontier County, Hayes County, Nebraska. It was in force for 47 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 31, 2018, 7:13 AM CDT (12:13 UTC)
Expired: Aug 31, 2018, 8:00 AM CDT
In force: 47 min
Issued by: NWS North Platte, NE

Counties Frontier County, NE, Hayes County, NE

The radar

The North Platte radar (KLNX), 152 km from the middle of the area, began a volume at 12:16 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 12:00Z, 0.2 hours before the alert went out and 60 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: 1628 J/kg
Mixed-layer CIN: -385 J/kg
Mixed-layer LCL: 1743 m above ground
0-6 km bulk shear: 30 kt
0-1 km storm-relative helicity: 41 m²/s²
0-3 km storm-relative helicity: 28 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.1

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 Aug 31, 6:27 AM CDT, 46 minutes earlier.

Area forecast discussion, Aug 31, 6:27 AM CDT, 46 minutes before

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Hazardous weather outlook, Aug 31, 5:44 AM CDT, 1 hour 29 minutes before

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In the hours before

Special weather statement, Aug 31, 4:34 AM CDT, 2 hours 39 minutes before

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Special weather statement, Aug 31, 7:13 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
Aug 30, 10:53 PM CDT	Special Weather Statement	LBF	Deuel	52 min
Aug 30, 11:29 PM CDT	Special Weather Statement	LBF	Keith	46 min
Aug 31, 5:05 AM CDT	Dense Fog Advisory	LBF	Blaine, Chase, Custer, Deuel, Frontier, Hayes and 4 more	5 hr
Aug 31, 3:57 PM CDT	Special Weather Statement	LBF	Blaine	48 min
Aug 31, 3:59 PM CDT	Tornado Warning	LBF	Blaine	46 min
Aug 31, 4:43 PM CDT	Special Weather Statement	LBF	Loup	47 min
Aug 31, 4:51 PM CDT	Special Weather Statement	LBF	Logan	39 min
Aug 31, 4:54 PM CDT	Severe Thunderstorm Warning	LBF	Logan	33 min
Aug 31, 5:32 PM CDT	Special Weather Statement	LBF	Logan	43 min
Aug 31, 5:47 PM CDT	Severe Thunderstorm Warning	LBF	Blaine, Thomas	28 min
Aug 31, 6:19 PM CDT	Special Weather Statement	LBF	Logan	26 min
Aug 31, 6:40 PM CDT	Special Weather Statement	LBF	Deuel	50 min
Aug 31, 6:41 PM CDT	Severe Thunderstorm Warning	LBF	Custer, Logan	34 min
Aug 31, 6:48 PM CDT	Special Weather Statement	LBF	Custer	27 min
Aug 31, 6:59 PM CDT	Severe Thunderstorm Warning	LBF	Deuel, Garden, Keith	46 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.