Alert archive / Nebraska / Severe Thunderstorm Warnings in 2015

Severe Thunderstorm Warning 243, NWS Hastings, NE

September 9, 2015Sherman County, Valley County, Nebraska

NWS Hastings, NE issued this severe thunderstorm warning at Sep 9, 2015, 6:45 PM CDT for Sherman County, Valley County, Nebraska. It was in force for 30 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 9, 2015, 6:45 PM CDT (23:45 UTC)
Expired: Sep 9, 2015, 7:15 PM CDT
In force: 30 min
Issued by: NWS Hastings, NE
Area: Storm-based polygon
Hail: 1.5 in
Wind: 60.0 mph

Counties Sherman County, NE, Valley County, NE

The radar

The Grand Island radar (KUEX), 128 km from the middle of the area, began a volume at 23:47 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, 11.8 hours before the alert went out and 139 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: 463 J/kg
Mixed-layer CIN: -127 J/kg
Mixed-layer LCL: 850 m above ground
0-6 km bulk shear: 38 kt
0-1 km storm-relative helicity: 246 m²/s²
0-3 km storm-relative helicity: 255 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 3.6

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 9, 6:27 PM CDT, 18 minutes earlier.

Area forecast discussion, Sep 9, 6:27 PM CDT, 18 minutes before

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Hazardous weather outlook, Sep 9, 6:08 PM CDT, 37 minutes before

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In the hours before

Local storm report, Sep 9, 6:11 PM CDT, 34 minutes before

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Local storm report, Sep 9, 6:12 PM CDT, 33 minutes before

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Local storm report, Sep 9, 6:14 PM CDT, 31 minutes before

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Local storm report, Sep 9, 6:23 PM CDT, 22 minutes before

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Local storm report, Sep 9, 6:31 PM CDT, 14 minutes before

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Local storm report, Sep 9, 6:38 PM CDT, 7 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 9, 11:36 AM CDT	Special Weather Statement	GID	Dawson	24 min
Sep 9, 11:43 AM CDT	Severe Thunderstorm Warning	GID	Buffalo, Dawson	32 min
Sep 9, 12:14 PM CDT	Special Weather Statement	GID	Buffalo	46 min
Sep 9, 12:23 PM CDT	Severe Thunderstorm Warning	GID	Buffalo, Dawson	37 min
Sep 9, 1:02 PM CDT	Special Weather Statement	GID	Buffalo	28 min
Sep 9, 2:27 PM CDT	Special Weather Statement	GID	Sherman	33 min
Sep 9, 2:54 PM CDT	Special Weather Statement	GID	Howard, Sherman	36 min
Sep 9, 4:01 PM CDT	Special Weather Statement	GID	Furnas, Gosper	44 min
Sep 9, 4:12 PM CDT	Severe Thunderstorm Warning	GID	Furnas, Gosper	48 min
Sep 9, 4:30 PM CDT	Special Weather Statement	GID	Dawson	30 min
Sep 9, 4:43 PM CDT	Severe Thunderstorm Warning	GID	Furnas	47 min
Sep 9, 4:57 PM CDT	Special Weather Statement	GID	Buffalo	48 min
Sep 9, 5:12 PM CDT	Severe Thunderstorm Warning	GID	Buffalo, Dawson	48 min
Sep 9, 5:22 PM CDT	Special Weather Statement	GID	Valley	23 min
Sep 9, 5:28 PM CDT	Severe Thunderstorm Warning	GID	Valley	47 min
Sep 9, 5:32 PM CDT	Severe Thunderstorm Warning	GID	Furnas	14 min
Sep 9, 5:35 PM CDT	Flash Flood Warning	GID	Furnas	3 hr
Sep 9, 5:43 PM CDT	Tornado Warning	GID	Valley	32 min
Sep 9, 5:51 PM CDT	Severe Thunderstorm Warning	GID	Buffalo, Kearney	39 min
Sep 9, 5:58 PM CDT	Severe Thunderstorm Warning	GID	Sherman, Valley	47 min
Sep 9, 6:10 PM CDT	Severe Thunderstorm Warning	GID	Valley	23 min
Sep 9, 6:16 PM CDT	Severe Thunderstorm Warning	GID	Sherman, Valley	29 min
Sep 9, 6:26 PM CDT	Severe Thunderstorm Warning	GID	Howard, Sherman	34 min
Sep 9, 6:28 PM CDT	Severe Thunderstorm Warning	GID	Buffalo, Kearney	32 min
Sep 9, 6:49 PM CDT	Special Weather Statement	GID	Nance	26 min
Sep 9, 6:57 PM CDT	Severe Thunderstorm Warning	GID	Hall, Howard, Sherman	33 min

Nearby

Severe Thunderstorm Warnings in Nebraska, 2015 Every severe thunderstorm warning in 2015

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.