Alert archive / Nebraska / Special Weather Statements in 2017

Special Weather Statement, NWS North Platte, NE

July 11, 2017Brown County, Nebraska

NWS North Platte, NE issued this special weather statement at Jul 11, 2017, 9:55 PM CDT for Brown County, Nebraska. It was in force for 35 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 11, 2017, 9:55 PM CDT (02:55 UTC)
Expired: Jul 11, 2017, 10:30 PM CDT
In force: 35 min
Issued by: NWS North Platte, NE

County Brown County, NE

The radar

The North Platte radar (KLNX), 62 km from the middle of the area, began a volume at 02:54 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

Aberdeen, SD (KABR), launched 00:00Z, 2.9 hours before the alert went out and 313 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: 586 J/kg
Mixed-layer CIN: -3 J/kg
Mixed-layer LCL: 3131 m above ground
0-6 km bulk shear: 46 kt
0-1 km storm-relative helicity: 10 m²/s²
0-3 km storm-relative helicity: 66 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.1

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 Jul 11, 6:43 PM CDT, 3 hours 12 minutes earlier.

Area forecast discussion, Jul 11, 6:43 PM CDT, 3 hours 12 minutes before

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Hazardous weather outlook, Jul 11, 8:50 PM CDT, 1 hour 5 minutes before

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In the hours before

Special weather statement, Jul 11, 8:10 PM CDT, 1 hour 45 minutes before

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Special weather statement, Jul 11, 8:27 PM CDT, 1 hour 28 minutes before

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Special weather statement, Jul 11, 9:06 PM CDT, 49 minutes before

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Special weather statement, Jul 11, 9:21 PM CDT, 34 minutes before

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Special weather statement, Jul 11, 9:47 PM CDT, 8 minutes before

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Special weather statement, Jul 11, 9:55 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
Jul 11, 7:31 PM CDT	Special Weather Statement	LBF	Keya Paha	44 min
Jul 11, 8:10 PM CDT	Special Weather Statement	LBF	Keya Paha	50 min
Jul 11, 8:27 PM CDT	Special Weather Statement	LBF	Brown	48 min
Jul 11, 9:06 PM CDT	Special Weather Statement	LBF	Rock	39 min
Jul 11, 9:21 PM CDT	Special Weather Statement	LBF	Brown	39 min
Jul 11, 9:47 PM CDT	Special Weather Statement	LBF	Box Butte	43 min
Jul 12, 9:57 AM CDT	Special Weather Statement	LBF	Lincoln	48 min
Jul 12, 10:00 AM CDT	Severe Thunderstorm Warning	LBF	Lincoln	45 min
Jul 12, 10:30 AM CDT	Special Weather Statement	LBF	Lincoln	45 min
Jul 12, 11:18 AM CDT	Areal Flood Advisory	LBF	Custer, Lincoln	3 hr
Jul 12, 11:47 AM CDT	Areal Flood Advisory	LBF	Custer	3 hr

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.