Alert archive / Nebraska / Severe Thunderstorm Warnings in 2018

Severe Thunderstorm Warning 230, NWS Hastings, NE

September 1, 2018Thayer County, Nebraska

NWS Hastings, NE issued this severe thunderstorm warning at Sep 1, 2018, 7:50 PM CDT for Thayer County, Nebraska. It was in force for 40 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Sep 1, 2018, 7:50 PM CDT (00:50 UTC)
Expired: Sep 1, 2018, 8:30 PM CDT
In force: 40 min
Issued by: NWS Hastings, NE
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

County Thayer County, NE

The radar

The Grand Island radar (KUEX), 74 km from the middle of the area, began a volume at 00:51 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Sep 1, 4:47 PM CDT	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Omaha, NE (KOAX), launched 00:00Z, 0.8 hours before the alert went out and 164 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: 2769 J/kg
Mixed-layer CIN: -28 J/kg
Mixed-layer LCL: 1276 m above ground
0-6 km bulk shear: 41 kt
0-1 km storm-relative helicity: 107 m²/s²
0-3 km storm-relative helicity: 185 m²/s²
Significant tornado parameter: 1.4
Supercell composite: 12.6

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Hastings, NE wrote its last area forecast discussion before this severe thunderstorm warning went out at Sep 1, 6:34 PM CDT, 1 hour 16 minutes earlier.

Area forecast discussion, Sep 1, 6:34 PM CDT, 1 hour 16 minutes before

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Hazardous weather outlook, Sep 1, 2:24 PM CDT, 5 hours 26 minutes before

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In the hours before

Local storm report, Sep 1, 6:54 PM CDT, 56 minutes before

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Special weather statement, Sep 1, 6:54 PM CDT, 56 minutes before

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Local storm report, Sep 1, 6:56 PM CDT, 54 minutes before

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Special weather statement, Sep 1, 7:15 PM CDT, 35 minutes before

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Special weather statement, Sep 1, 7:19 PM CDT, 31 minutes before

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Special weather statement, Sep 1, 7:34 PM CDT, 16 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Sep 1, 7:34 PM CDT	Special Weather Statement	GID	Thayer	41 min
Sep 2, 9:55 AM CDT	Areal Flood Advisory	GID	Adams, Franklin, Harlan, Kearney, Webster	24 hr
Sep 1, 7:15 PM CDT	Special Weather Statement	GID	Osborne	45 min
Sep 1, 7:19 PM CDT	Special Weather Statement	GID	Republic	41 min
Sep 1, 8:19 PM CDT	Special Weather Statement	GID	Osborne	26 min
Sep 2, 5:54 PM CDT	Special Weather Statement	GID	Osborne	21 min
Sep 2, 6:17 PM CDT	Special Weather Statement	GID	Mitchell	13 min
Sep 2, 6:19 PM CDT	Special Weather Statement	GID	Mitchell	11 min

Nearby

Severe Thunderstorm Warnings in Nebraska, 2018 Every severe thunderstorm warning 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.