Alert archive / Nebraska / Special Weather Statements in 2018

Special Weather Statement, NWS Omaha, NE

May 1, 2018Wayne County, Nebraska

NWS Omaha, NE issued this special weather statement at May 1, 2018, 1:43 AM CDT for Wayne County, Nebraska. It was in force for 32 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: May 1, 2018, 1:43 AM CDT (06:43 UTC)
Expired: May 1, 2018, 2:15 AM CDT
In force: 32 min
Issued by: NWS Omaha, NE

County Wayne County, NE

The radar

The Omaha radar (KOAX), 111 km from the middle of the area, began a volume at 06:44 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

Omaha, NE (KOAX), launched 00:00Z, 6.7 hours before the alert went out and 110 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: 86 J/kg
Mixed-layer CIN: -321 J/kg
Mixed-layer LCL: 2419 m above ground
0-6 km bulk shear: 29 kt
0-1 km storm-relative helicity: 131 m²/s²
0-3 km storm-relative helicity: 246 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

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 Omaha, NE wrote its last area forecast discussion before this special weather statement went out at Apr 30, 11:47 PM CDT, 1 hour 56 minutes earlier.

Area forecast discussion, Apr 30, 11:47 PM CDT, 1 hour 56 minutes before

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Hazardous weather outlook, Apr 30, 4:42 PM CDT, 9 hours 1 minute before

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In the hours before

Special weather statement, Apr 30, 7:52 PM CDT, 5 hours 51 minutes before

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Special weather statement, Apr 30, 8:37 PM CDT, 5 hours 6 minutes before

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Special weather statement, Apr 30, 9:32 PM CDT, 4 hours 11 minutes before

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Special weather statement, May 1, 1:43 AM CDT, 0 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 30, 7:52 PM CDT	Special Weather Statement	OAX	Knox	23 min
Apr 30, 8:02 PM CDT	Severe Thunderstorm Warning	OAX	Knox	28 min
Apr 30, 8:37 PM CDT	Special Weather Statement	OAX	Knox	38 min
Apr 30, 9:32 PM CDT	Special Weather Statement	OAX	Antelope, Cedar, Pierce	43 min
May 1, 2:25 AM CDT	Special Weather Statement	OAX	Cuming	20 min
May 1, 2:51 AM CDT	Special Weather Statement	OAX	Thurston	24 min
May 1, 3:47 PM CDT	Severe Thunderstorm Warning	OAX	Colfax, Cuming, Dodge, Platte, Stanton	43 min
May 1, 3:58 PM CDT	Severe Thunderstorm Warning	OAX	Butler, Colfax, Platte	32 min
May 1, 4:19 PM CDT	Severe Thunderstorm Warning	OAX	Colfax, Dodge	29 min
May 1, 4:27 PM CDT	Severe Thunderstorm Warning	OAX	Butler, Colfax	33 min
May 1, 4:38 PM CDT	Severe Thunderstorm Warning	OAX	Burt, Cuming, Dodge	52 min
May 1, 4:55 PM CDT	Severe Thunderstorm Warning	OAX	Butler, Colfax, Dodge, Saunders	50 min
May 1, 5:01 PM CDT	Tornado Warning	OAX	Butler, Saunders	29 min
May 1, 5:02 PM CDT	Severe Thunderstorm Warning	OAX	Butler, Colfax, Platte	43 min
May 1, 5:27 PM CDT	Severe Thunderstorm Warning	OAX	Burt, Dodge, Washington	48 min
May 1, 5:38 PM CDT	Tornado Warning	OAX	Burt, Washington	17 min
May 1, 5:40 PM CDT	Severe Thunderstorm Warning	OAX	Butler, Colfax, Platte	50 min
May 1, 5:42 PM CDT	Severe Thunderstorm Warning	OAX	Dodge, Saunders	48 min
May 1, 5:50 PM CDT	Severe Thunderstorm Warning	OAX	Washington	40 min
May 1, 6:06 PM CDT	Tornado Warning Tornado observed	OAX	Jefferson	24 min
May 1, 6:08 PM CDT	Severe Thunderstorm Warning	OAX	Burt	52 min
May 1, 6:21 PM CDT	Severe Thunderstorm Warning	OAX	Burt, Dodge, Washington	17 min
May 1, 6:28 PM CDT	Severe Thunderstorm Warning	OAX	Butler	32 min
May 1, 6:28 PM CDT	Tornado Warning	OAX	Jefferson	32 min
May 1, 6:56 PM CDT	Tornado Warning	OAX	Gage, Jefferson	34 min
May 1, 6:58 PM CDT	Flash Flood Warning	OAX	Burt, Washington	2 hr
May 1, 3:27 AM CDT	Special Weather Statement	OAX	Shelby	18 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.